/* ============================================
   Fix My Speaker - Unified Stylesheet
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  --font-body: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --primary-50: #f0f9ff; --primary-100: #e0f2fe; --primary-200: #bae6fd;
  --primary-400: #38bdf8; --primary-500: #0ea5e9; --primary-600: #0284c7;
  --primary-700: #0369a1; --primary-900: #0c4a6e;
  --secondary-200: #ddd6fe; --secondary-500: #8b5cf6; --secondary-600: #7c3aed;
  --cyan-200: #a5f3fc; --cyan-400: #22d3ee; --cyan-500: #06b6d4; --cyan-600: #0891b2;
  --blue-100: #dbeafe; --blue-200: #bfdbfe; --blue-400: #60a5fa; --blue-600: #2563eb;
  --purple-100: #f3e8ff; --purple-400: #c084fc; --purple-600: #9333ea;
  --green-100: #dcfce7; --green-400: #4ade80; --green-600: #16a34a;
  --yellow-400: #facc15; --pink-400: #f472b6;
  --orange-100: #ffedd5;
  --gray-50: #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb;
  --gray-300: #d1d5db; --gray-400: #9ca3af; --gray-500: #6b7280;
  --gray-600: #4b5563; --gray-700: #374151; --gray-800: #1f2937; --gray-900: #111827;
  --dark-bg: #0b0f19; --dark-card: #111827;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

/* --- Modern Reset --- */
*, ::before, ::after { box-sizing: border-box; border: 0 solid var(--gray-200); margin: 0; padding: 0; }
html { line-height: 1.5; -webkit-text-size-adjust: 100%; font-family: var(--font-body); tab-size: 4; -webkit-tap-highlight-color: transparent; scroll-behavior: smooth; }
body { margin: 0; line-height: inherit; background-color: var(--gray-50); color: var(--gray-900); transition: background-color 0.3s, color 0.3s; }
.dark body { background-color: var(--dark-bg); color: var(--gray-100); }
h1,h2,h3,h4,h5,h6 { font-size: inherit; font-weight: inherit; }
a { color: inherit; text-decoration: none; }
b, strong { font-weight: 700; }
img, svg, video, canvas, audio, iframe, embed, object { display: block; vertical-align: middle; }
img, video { max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; margin: 0; padding: 0; }
button, [role="button"] { cursor: pointer; }
button, input[type="button"], input[type="reset"], input[type="submit"] { -webkit-appearance: button; background: transparent; }
ul, ol, menu { list-style: none; }
summary { display: list-item; }
input::placeholder, textarea::placeholder { opacity: 1; color: var(--gray-400); }
[hidden] { display: none; }

/* --- Animations --- */
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-20px)} }
@keyframes pulse-soft { 0%,100%{opacity:0.6;transform:scale(1)} 50%{opacity:1;transform:scale(1.05)} }
@keyframes ping { 75%,100%{transform:scale(2);opacity:0} }
@keyframes gradient-x { 0%{background-position:0% 50%} 50%{background-position:100% 50%} 100%{background-position:0% 50%} }
@keyframes fade-in { from{opacity:0;transform:translateY(-8px)} to{opacity:1;transform:translateY(0)} }
@keyframes wave { 0%,100%{height:20%} 50%{height:100%} }
.animate-float { animation: float 6s ease-in-out infinite; }
.animate-pulse-soft { animation: pulse-soft 3s ease-in-out infinite; }
.animate-ping { animation: ping 1s cubic-bezier(0,0,0.2,1) infinite; }
.animate-gradient-x { background-size: 200% 200%; animation: gradient-x 4s ease infinite; }
.animate-fade-in { animation: fade-in 0.3s ease-out; }
.animate-pulse { animation: pulse-soft 2s cubic-bezier(0.4,0,0.6,1) infinite; }

/* --- Utility Classes --- */
.container { width: 100%; margin-left: auto; margin-right: auto; padding-left: 1rem; padding-right: 1rem; }
@media(min-width:640px){.container{max-width:640px}}
@media(min-width:768px){.container{max-width:768px}}
@media(min-width:1024px){.container{max-width:1024px}}
@media(min-width:1280px){.container{max-width:1280px}}
.max-w-2xl{max-width:42rem} .max-w-3xl{max-width:48rem} .max-w-4xl{max-width:56rem}
.max-w-6xl{max-width:72rem} .max-w-7xl{max-width:80rem} .max-w-md{max-width:28rem}
.mx-auto{margin-left:auto;margin-right:auto}
.text-center{text-align:center}
.relative{position:relative} .absolute{position:absolute} .fixed{position:fixed}
.inset-0{inset:0} .z-0{z-index:0} .z-10{z-index:10} .z-20{z-index:20} .z-50{z-index:50}
.overflow-hidden{overflow:hidden} .pointer-events-none{pointer-events:none}
.hidden{display:none} .block{display:block} .inline-block{display:inline-block}
.flex{display:flex} .inline-flex{display:inline-flex} .grid{display:grid}
.flex-col{flex-direction:column} .flex-grow{flex-grow:1}
.items-center{align-items:center} .justify-center{justify-content:center} .justify-between{justify-content:space-between}
.gap-1{gap:.25rem} .gap-2{gap:.5rem} .gap-3{gap:.75rem} .gap-4{gap:1rem}
.gap-6{gap:1.5rem} .gap-8{gap:2rem} .gap-10{gap:2.5rem} .gap-12{gap:3rem}
.w-full{width:100%} .h-full{height:100%} .min-h-screen{min-height:100vh}
.rounded-lg{border-radius:.5rem} .rounded-xl{border-radius:.75rem}
.rounded-2xl{border-radius:1rem} .rounded-3xl{border-radius:1.5rem} .rounded-full{border-radius:9999px}
.cursor-pointer{cursor:pointer} .cursor-default{cursor:default}
.transition-all{transition:all .3s ease} .transition-colors{transition:color .3s,background-color .3s}
.transition-transform{transition:transform .3s ease}

/* --- Navigation Accent Bar --- */
.nav-accent-bar {
  position: fixed; top: 0; left: 0; width: 100%; height: 3px; z-index: 51;
  background: linear-gradient(90deg, var(--cyan-400), var(--primary-500), var(--secondary-500), var(--cyan-400));
  background-size: 300% 100%;
  animation: gradient-x 6s ease infinite;
}

/* --- Navigation --- */
.site-nav {
  position: fixed; top: 3px; width: 100%; z-index: 50;
  background: rgba(255,255,255,0.85); backdrop-filter: blur(20px) saturate(180%); -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(0,0,0,0.06); transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.dark .site-nav { background: rgba(11,15,25,0.88); border-color: rgba(255,255,255,0.06); box-shadow: 0 1px 3px rgba(0,0,0,0.3); }
.nav-inner {
  max-width: 80rem; margin: 0 auto; padding: 0 1rem;
  display: flex; justify-content: space-between; align-items: center; height: 4.25rem;
}
@media(min-width:640px){.nav-inner{padding:0 1.5rem}}
@media(min-width:1024px){.nav-inner{padding:0 2rem}}

/* Brand */
.nav-brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.nav-brand-icon {
  position: relative; width: 2.5rem; height: 2.5rem;
  background: linear-gradient(135deg, var(--primary-500), var(--cyan-500));
  border-radius: 0.75rem;
  display: flex; align-items: center; justify-content: center; color: #fff;
  font-size: 1.25rem; transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 14px rgba(14,165,233,0.25);
}
.nav-brand:hover .nav-brand-icon { transform: rotate(-8deg) scale(1.08); box-shadow: 0 6px 20px rgba(14,165,233,0.4); }
.nav-brand-glow {
  position: absolute; inset: -4px; border-radius: inherit; z-index: -1;
  background: linear-gradient(135deg, var(--cyan-400), var(--primary-500));
  opacity: 0; filter: blur(8px); transition: opacity 0.3s;
}
.nav-brand:hover .nav-brand-glow { opacity: 0.5; }
.nav-brand-text {
  font-size: 1.35rem; font-family: var(--font-heading); font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--gray-800), var(--primary-700));
  -webkit-background-clip: text; background-clip: text;
  color: transparent; -webkit-text-fill-color: transparent;
  transition: all 0.3s;
}
.dark .nav-brand-text {
  background: none;
  -webkit-background-clip: unset; background-clip: unset;
  color: #fff; -webkit-text-fill-color: #fff;
}

/* Nav links */
.nav-links { display: none; align-items: center; gap: 0.5rem; }
@media(min-width:768px){.nav-links{display:flex}}
.nav-links-group { display: flex; align-items: center; gap: 0.25rem; background: var(--gray-100); border-radius: 9999px; padding: 0.25rem; }
.dark .nav-links-group { background: rgba(255,255,255,0.06); }
.nav-link {
  position: relative; padding: 0.5rem 1.125rem; border-radius: 9999px;
  font-weight: 500; font-size: 0.9rem; transition: all 0.25s;
  color: var(--gray-500); text-decoration: none;
}
.nav-link:hover { color: var(--gray-900); background: rgba(0,0,0,0.04); }
.dark .nav-link { color: var(--gray-200); }
.dark .nav-link:hover { color: #fff; background: rgba(255,255,255,0.06); }
.nav-link.active {
  color: #fff; font-weight: 600;
  background: linear-gradient(135deg, var(--primary-500), var(--cyan-500));
  box-shadow: 0 2px 8px rgba(14,165,233,0.3);
}
.dark .nav-link.active { color: #fff; }

/* Nav actions */
.nav-actions { display: flex; align-items: center; gap: 0.75rem; margin-left: 1.5rem; }

/* Theme toggle */
.theme-toggle {
  position: relative; width: 2.25rem; height: 2.25rem; border-radius: 9999px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-500); background: transparent;
  transition: all 0.25s; font-size: 1.15rem; line-height: 1;
}
.theme-toggle:hover { background: var(--gray-100); color: var(--gray-700); transform: rotate(20deg); }
.dark .theme-toggle { color: var(--gray-200); }
.dark .theme-toggle:hover { background: rgba(255,255,255,0.08); color: var(--yellow-400); }

/* Chrome CTA button */
.chrome-btn {
  position: relative; overflow: hidden;
  display: flex; align-items: center; gap: 0.5rem;
  background: linear-gradient(135deg, var(--gray-900) 0%, #1a1a2e 100%);
  color: #fff; padding: 0.55rem 1.25rem; border-radius: 9999px;
  font-weight: 600; font-size: 0.875rem; transition: all 0.35s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  text-decoration: none;
}
.chrome-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.dark .chrome-btn { background: linear-gradient(135deg, #fff 0%, var(--gray-100) 100%); color: var(--gray-900); }
.dark .chrome-btn:hover { box-shadow: 0 8px 24px rgba(255,255,255,0.15); }
.chrome-btn-shine {
  position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.15) 50%, transparent 100%);
  transition: left 0.5s;
}
.chrome-btn:hover .chrome-btn-shine { left: 100%; }
.chrome-arrow { font-size: 0.8rem; opacity: 0.6; transition: transform 0.25s, opacity 0.25s; }
.chrome-btn:hover .chrome-arrow { transform: translate(2px, -2px); opacity: 1; }

/* Mobile controls */
.mobile-controls { display: flex; align-items: center; gap: 0.75rem; }
@media(min-width:768px){.mobile-controls{display:none}}

/* Hamburger menu button */
.menu-toggle {
  position: relative; width: 2.5rem; height: 2.5rem; border-radius: 0.5rem;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 5px; background: transparent; padding: 0; cursor: pointer;
}
.hamburger-line {
  display: block; width: 1.25rem; height: 2px; border-radius: 2px;
  background: var(--gray-600); transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}
.dark .hamburger-line { background: var(--gray-300); }
.menu-toggle:hover .hamburger-line { background: var(--primary-500); }
.menu-toggle.active .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active .hamburger-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.menu-toggle.active .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay */
.mobile-overlay {
  position: fixed; inset: 0; z-index: 40;
  background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  opacity: 0; visibility: hidden; transition: all 0.3s;
}
.mobile-overlay.active { opacity: 1; visibility: visible; }

/* Mobile slide-in drawer */
.mobile-menu {
  position: fixed; top: 0; right: -100%; width: min(85vw, 320px); height: 100vh;
  z-index: 45; background: #fff; box-shadow: -10px 0 40px rgba(0,0,0,0.15);
  display: flex; flex-direction: column;
  transition: right 0.35s cubic-bezier(0.4,0,0.2,1);
}
.mobile-menu.active { right: 0; }
@media(min-width:768px){.mobile-menu{display:none!important}}
.dark .mobile-menu { background: var(--dark-card); box-shadow: -10px 0 40px rgba(0,0,0,0.5); }

.mobile-menu-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--gray-100);
}
.dark .mobile-menu-header { border-color: rgba(255,255,255,0.06); }
.menu-close {
  width: 2.25rem; height: 2.25rem; border-radius: 0.5rem;
  display: flex; align-items: center; justify-content: center;
  background: var(--gray-100); color: var(--gray-600);
  font-size: 1.25rem; transition: all 0.2s; cursor: pointer;
}
.menu-close:hover { background: var(--gray-200); }
.dark .menu-close { background: rgba(255,255,255,0.06); color: var(--gray-300); }
.dark .menu-close:hover { background: rgba(255,255,255,0.1); }

.mobile-menu-inner {
  flex: 1; display: flex; flex-direction: column; padding: 1rem 1rem; gap: 0.25rem;
  overflow-y: auto;
}
.mobile-nav-links {
  display: flex; flex-direction: column; gap: 0.25rem;
}
.mobile-nav-link {
  display: flex; align-items: center; gap: 0.875rem;
  padding: 0.875rem 1rem; border-radius: 0.75rem;
  color: var(--gray-600); font-weight: 500; font-size: 1rem;
  transition: all 0.2s; text-decoration: none;
}
.mobile-nav-link i { font-size: 1.25rem; opacity: 0.6; }
.mobile-nav-link:hover { background: var(--gray-50); color: var(--gray-900); }
.mobile-nav-link:hover i { opacity: 1; }
.mobile-nav-link.active {
  background: linear-gradient(135deg, rgba(14,165,233,0.08), rgba(6,182,212,0.08));
  color: var(--primary-600); font-weight: 600;
}
.mobile-nav-link.active i { color: var(--primary-500); opacity: 1; }
.dark .mobile-nav-link { color: var(--gray-300); }
.dark .mobile-nav-link:hover { background: rgba(255,255,255,0.05); color: #fff; }
.dark .mobile-nav-link.active { background: rgba(14,165,233,0.1); color: var(--primary-400); }

/* Mobile Language Section */
.mobile-lang-section {
  margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--gray-100);
}
.dark .mobile-lang-section { border-color: rgba(255,255,255,0.06); }
.mobile-lang-label {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  color: var(--gray-500); letter-spacing: 0.05em; margin-bottom: 1rem; padding: 0 0.5rem;
}
.dark .mobile-lang-label { color: var(--gray-400); }
.mobile-lang-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem;
}
.mobile-lang-option {
  text-align: center; padding: 0.75rem 0.5rem; border-radius: 0.5rem;
  font-size: 0.875rem; color: var(--gray-600); transition: all 0.2s;
  text-decoration: none; font-weight: 500;
}
.mobile-lang-option:hover { background: var(--gray-50); color: var(--gray-900); }
.mobile-lang-option.active {
  background: var(--primary-50); color: var(--primary-600); font-weight: 600;
}
.dark .mobile-lang-option { color: var(--gray-400); }
.dark .mobile-lang-option:hover { background: rgba(255,255,255,0.05); color: #fff; }
.dark .mobile-lang-option.active { background: rgba(14,165,233,0.1); color: var(--primary-400); }

.mobile-menu-footer {
  padding: 1.25rem 1.5rem; border-top: 1px solid var(--gray-100);
}
.dark .mobile-menu-footer { border-color: rgba(255,255,255,0.06); }
.mobile-chrome-btn {
  display: flex; align-items: center; justify-content: center; gap: 0.625rem;
  width: 100%; padding: 0.875rem;
  background: linear-gradient(135deg, var(--primary-500), var(--cyan-500));
  color: #fff; border-radius: 0.75rem; font-weight: 600; font-size: 0.9375rem;
  box-shadow: 0 4px 14px rgba(14,165,233,0.3); transition: all 0.3s;
  text-decoration: none;
}
.mobile-chrome-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(14,165,233,0.4); }
.mobile-menu-tagline {
  text-align: center; color: var(--gray-400); font-size: 0.8125rem; margin-top: 0.875rem;
}


/* --- Hero Section --- */
.hero {
  position: relative; padding: 7rem 0 5rem; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom right, var(--gray-900), rgba(30,58,138,0.2), rgba(88,28,135,0.2));
}
.hero-orb {
  position: absolute; border-radius: 9999px; filter: blur(140px);
}
.hero-orb-1 { top: -20%; left: -10%; width: 800px; height: 800px; background: linear-gradient(to bottom right, rgba(6,182,212,0.3), rgba(37,99,235,0.3)); }
.hero-orb-2 { bottom: -20%; right: -10%; width: 800px; height: 800px; background: linear-gradient(to bottom right, rgba(168,85,247,0.3), rgba(219,39,119,0.3)); animation-delay: 3s; }
.hero-orb-3 { top: 30%; right: 10%; width: 400px; height: 400px; background: linear-gradient(to bottom right, rgba(96,165,250,0.2), rgba(6,182,212,0.2)); }
.hero-orb-4 { bottom: 30%; left: 10%; width: 400px; height: 400px; background: linear-gradient(to bottom right, rgba(192,132,252,0.2), rgba(236,72,153,0.2)); animation-delay: 1.5s; }
.hero-grid {
  position: absolute; inset: 0; opacity: 0.4; mix-blend-mode: overlay; pointer-events: none;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNjAiIGhlaWdodD0iNjAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PHBhdHRlcm4gaWQ9ImdyaWQiIHdpZHRoPSI2MCIgaGVpZ2h0PSI2MCIgcGF0dGVyblVuaXRzPSJ1c2VyU3BhY2VPblVzZSI+PHBhdGggZD0iTSA2MCAwIEwgMCAwIDAgNjAiIGZpbGw9Im5vbmUiIHN0cm9rZT0icmdiYSgyNTUsMjU1LDI1NSwwLjAzKSIgc3Ryb2tlLXdpZHRoPSIxIi8+PC9wYXR0ZXJuPjwvZGVmcz48cmVjdCB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiBmaWxsPSJ1cmwoI2dyaWQpIi8+PC9zdmc+");
}
.hero-particle { position: absolute; border-radius: 9999px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.75rem;
  padding: 0.625rem 1.25rem; border-radius: 9999px;
  background: rgba(255,255,255,0.1); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.2); color: #fff; font-size: 0.875rem; font-weight: 600;
  margin-bottom: 1.25rem; box-shadow: 0 25px 50px rgba(6,182,212,0.2);
  transition: transform 0.3s; cursor: default;
}
.hero-badge:hover { transform: scale(1.05); }
.hero-badge-dot { position: relative; display: flex; width: 0.625rem; height: 0.625rem; }
.hero-badge-dot .ping { position: absolute; display: inline-flex; width: 100%; height: 100%; border-radius: 9999px; background: var(--cyan-400); opacity: 0.75; animation: ping 1s cubic-bezier(0,0,0.2,1) infinite; }
.hero-badge-dot .dot { position: relative; display: inline-flex; border-radius: 9999px; width: 0.625rem; height: 0.625rem; background: var(--cyan-500); }
.hero-badge-text { background: linear-gradient(to right, var(--cyan-200), var(--blue-200)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-title {
  font-size: 2.25rem; font-family: var(--font-heading); font-weight: 800;
  margin-bottom: 0.75rem; letter-spacing: -0.025em; line-height: 1.1;
}
@media(min-width:640px){.hero-title{font-size:3rem}}
@media(min-width:768px){.hero-title{font-size:3.75rem}}
@media(min-width:1024px){.hero-title{font-size:4.5rem}}
.hero-title-gradient {
  display: block; color: transparent;
  background: linear-gradient(to right, var(--cyan-400), var(--blue-400), var(--purple-400));
  -webkit-background-clip: text; background-clip: text; background-size: 200% 200%;
  animation: gradient-x 4s ease infinite; filter: drop-shadow(0 4px 6px rgba(0,0,0,0.3));
}
.hero-title-white { display: block; color: #fff; filter: drop-shadow(0 4px 6px rgba(0,0,0,0.3)); margin-bottom: 0.5rem; }
.hero-subtitle {
  font-size: 1.125rem; color: var(--gray-100); margin-bottom: 3rem;
  max-width: 48rem; margin-left: auto; margin-right: auto; line-height: 1.625; font-weight: 300;
}
@media(min-width:768px){.hero-subtitle{font-size:1.5rem}}
.hero-subtitle strong { color: #fff; font-weight: 500; }

/* --- Tool Card --- */
.tool-card {
  background: #fff; border-radius: 1.5rem; padding: 1.5rem;
  box-shadow: var(--shadow-2xl); border: 2px solid var(--gray-200);
}
@media(min-width:768px){.tool-card{padding:2.5rem}}
.dark .tool-card { background: var(--gray-800); border-color: var(--gray-700); }
.tab-bar {
  display: inline-flex; background: var(--gray-100); border-radius: 9999px;
  padding: 0.375rem; box-shadow: inset 0 2px 4px rgba(0,0,0,0.06); border: 1px solid var(--gray-200);
}
.dark .tab-bar { background: var(--gray-700); border-color: var(--gray-600); }
.tab-btn {
  padding: 0.75rem 1.5rem; border-radius: 9999px; font-size: 0.875rem;
  font-weight: 600; transition: all 0.3s; background: transparent;
  color: var(--gray-700); cursor: pointer;
}
.dark .tab-btn { color: var(--gray-300); }
.tab-btn:hover { color: var(--gray-900); }
.dark .tab-btn:hover { color: #fff; }
.tab-btn.active {
  background: linear-gradient(to right, var(--cyan-500), var(--blue-600));
  color: #fff; box-shadow: 0 4px 14px rgba(6,182,212,0.3);
}
.tab-content { display: none; }
.tab-content.active { display: block; }
.control-label {
  display: block; color: var(--gray-800); text-transform: uppercase;
  letter-spacing: 0.05em; font-size: 0.75rem; font-weight: 600; margin-bottom: 0.75rem;
}
.dark .control-label { color: var(--gray-200); }

/* --- Buttons (Tool) --- */
.btn-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 0.75rem; }
.btn-grid-4 { display: grid; grid-template-columns: repeat(2,1fr); gap: 0.5rem; }
@media(min-width:640px){.btn-grid-4{grid-template-columns:repeat(4,1fr)}}
.option-btn {
  padding: 0.75rem 1rem; border-radius: 0.75rem; font-size: 0.875rem;
  font-weight: 600; transition: all 0.3s; cursor: pointer;
  background: var(--gray-200); color: var(--gray-800);
}
.option-btn:hover { background: var(--gray-300); }
.dark .option-btn { background: var(--gray-700); color: var(--gray-200); }
.dark .option-btn:hover { background: var(--gray-600); }
.option-btn.active {
  background: linear-gradient(to right, var(--cyan-500), var(--blue-600));
  color: #fff; box-shadow: 0 4px 14px rgba(6,182,212,0.3);
}
.option-btn.active:hover {
  background: linear-gradient(to right, var(--cyan-600), #1d4ed8);
}
.slider-row { margin-bottom: 1.5rem; }
.slider-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.slider-value { color: var(--cyan-600); font-weight: 700; font-size: 1.25rem; }
.dark .slider-value { color: var(--cyan-400); }
input[type="range"] {
  width: 100%; height: 0.75rem; border-radius: 0.5rem; appearance: none; -webkit-appearance: none;
  background: var(--gray-200); cursor: pointer; outline: none; transition: all 0.2s;
}
.dark input[type="range"] { background: var(--gray-700); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 1.25rem; height: 1.25rem; border-radius: 50%;
  background: var(--cyan-500); box-shadow: 0 2px 6px rgba(6,182,212,0.4); cursor: pointer; transition: all 0.2s;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); background: var(--cyan-400); }
input[type="range"]::-moz-range-thumb {
  width: 1.25rem; height: 1.25rem; border-radius: 50%; border: none;
  background: var(--cyan-500); box-shadow: 0 2px 6px rgba(6,182,212,0.4); cursor: pointer;
}
.slider-labels { display: flex; justify-content: space-between; margin-top: 0.5rem; font-size: 0.75rem; color: var(--gray-600); }
.dark .slider-labels { color: var(--gray-400); }
.play-btn {
  width: 100%; padding: 1rem 0; border-radius: 1rem; font-weight: 700; font-size: 1.25rem;
  background: linear-gradient(to right, var(--cyan-500), var(--blue-600));
  color: #fff; box-shadow: 0 25px 50px rgba(6,182,212,0.5);
  transition: all 0.3s; display: flex; align-items: center; justify-content: center; gap: 0.75rem;
  cursor: pointer;
}
.play-btn:hover { background: linear-gradient(to right, var(--cyan-600), #1d4ed8); transform: scale(1.02); }
.play-btn:active { transform: scale(0.95); }
.play-btn i { font-size: 2rem; }
.waveform { height: 5rem; margin-top: 1.5rem; display: none; align-items: center; justify-content: center; gap: 0.25rem; }
.waveform.active { display: flex; }
.waveform-bar { width: 0.5rem; border-radius: 9999px; background: var(--primary-500); transition: height 75ms; min-height: 10px; }
@media(min-width:768px){.waveform-bar{width:0.75rem}}

/* --- Section Styles --- */
.section { padding: 4rem 0; position: relative; }
@media(min-width:768px){.section{padding:6rem 0}}
.section-light { background: var(--gray-50); }
.dark .section-light { background: rgba(17,24,39,0.3); }
.section-white { background: #fff; }
.dark .section-white { background: var(--dark-bg); }
.section-tag {
  display: inline-block; padding: 0.25rem 0.75rem; border-radius: 9999px;
  background: var(--primary-100); color: var(--primary-600);
  font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; font-size: 0.75rem; margin-bottom: 1rem;
}
.dark .section-tag { background: rgba(14,165,233,0.15); color: var(--primary-400); }
.section-title {
  font-size: 1.875rem; font-family: var(--font-heading); font-weight: 700;
  color: var(--gray-900); margin-bottom: 1rem;
}
@media(min-width:768px){.section-title{font-size:2.25rem}}
.dark .section-title { color: #fff; }
.section-title-lg { font-size: 2.25rem; }
@media(min-width:768px){.section-title-lg{font-size:3rem}}
.section-subtitle { color: var(--gray-600); max-width: 42rem; margin: 0 auto; font-size: 1.125rem; }
.dark .section-subtitle { color: var(--gray-400); }
.gradient-text {
  color: transparent; background: linear-gradient(to right, var(--primary-600), var(--secondary-600));
  -webkit-background-clip: text; background-clip: text;
}

/* --- Feature Cards --- */
.feature-grid { display: grid; gap: 2rem; }
@media(min-width:768px){.feature-grid{grid-template-columns:repeat(3,1fr)}}
.feature-card {
  background: #fff; padding: 2rem; border-radius: 1.5rem;
  box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100);
  transition: all 0.3s;
}
.feature-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-4px); }
.dark .feature-card { background: var(--dark-card); border-color: rgba(255,255,255,0.05); }
.feature-icon {
  width: 3.5rem; height: 3.5rem; border-radius: 1rem;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 1.5rem; transition: transform 0.3s;
}
.feature-card:hover .feature-icon { transform: scale(1.1); }
.feature-icon-blue { background: var(--blue-100); color: var(--blue-600); }
.dark .feature-icon-blue { background: rgba(37,99,235,0.15); color: var(--blue-400); }
.feature-icon-purple { background: var(--purple-100); color: var(--purple-600); }
.dark .feature-icon-purple { background: rgba(168,85,247,0.15); color: var(--purple-400); }
.feature-icon-green { background: var(--green-100); color: var(--green-600); }
.dark .feature-icon-green { background: rgba(34,197,94,0.15); color: #4ade80; }
.feature-icon-orange { background: var(--orange-100); color: #ea580c; }
.dark .feature-icon-orange { background: rgba(234,88,12,0.15); color: #fb923c; }
.feature-icon-cyan { background: rgba(6,182,212,0.1); color: var(--cyan-600); }
.dark .feature-icon-cyan { background: rgba(6,182,212,0.15); color: var(--cyan-400); }
.feature-icon-pink { background: rgba(236,72,153,0.1); color: #db2777; }
.dark .feature-icon-pink { background: rgba(236,72,153,0.15); color: var(--pink-400); }
.feature-title { font-size: 1.25rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0.75rem; }
.dark .feature-title { color: #fff; }
.feature-desc { color: var(--gray-600); line-height: 1.625; }
.dark .feature-desc { color: var(--gray-400); }

/* --- Device Grid --- */
.device-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem; }
@media(min-width:768px){.device-grid{grid-template-columns:repeat(5,1fr)}}
.device-card {
  background: #fff; padding: 2rem; border-radius: 1.5rem;
  box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100);
  transition: all 0.3s; text-align: center;
}
.device-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-8px); }
.dark .device-card { background: var(--dark-card); border-color: rgba(255,255,255,0.05); }
.device-icon {
  width: 4rem; height: 4rem; margin: 0 auto 1rem; border-radius: 1rem;
  display: flex; align-items: center; justify-content: center;
  background: var(--primary-50); color: var(--primary-600); font-size: 1.875rem;
  transition: transform 0.3s;
}
.device-card:hover .device-icon { transform: scale(1.1); }
.dark .device-icon { background: rgba(14,165,233,0.1); color: var(--primary-400); }
.device-name { font-weight: 700; color: var(--gray-900); font-size: 1.125rem; }
.dark .device-name { color: #fff; }

/* --- Steps --- */
.steps-grid { display: grid; gap: 2rem; position: relative; }
@media(min-width:768px){.steps-grid{grid-template-columns:repeat(3,1fr)}}
.steps-line {
  display: none; position: absolute; top: 3rem; left: 16%; right: 16%; height: 2px;
  background: linear-gradient(to right, var(--primary-200), var(--secondary-200), var(--primary-200));
}
@media(min-width:768px){.steps-line{display:block}}
.dark .steps-line { background: linear-gradient(to right, var(--primary-900), rgba(139,92,246,0.3), var(--primary-900)); }
.step-card {
  background: #fff; padding: 2rem; border-radius: 2rem;
  box-shadow: var(--shadow-lg); border: 1px solid var(--gray-100);
  text-align: center; transition: all 0.3s; height: 100%;
}
.step-card:hover { transform: translateY(-8px); }
.dark .step-card { background: var(--dark-card); border-color: rgba(255,255,255,0.05); }
.step-number {
  width: 5rem; height: 5rem; margin: 0 auto 1.5rem; border-radius: 9999px;
  border: 4px solid var(--primary-100); background: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 700; box-shadow: var(--shadow-lg); position: relative; z-index: 10;
}
.dark .step-number { background: var(--dark-card); border-color: rgba(14,165,233,0.2); }
.step-number span {
  background: linear-gradient(to bottom right, var(--primary-500), var(--secondary-500));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step-title { font-size: 1.25rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0.75rem; }
.dark .step-title { color: #fff; }
.step-desc { color: var(--gray-600); line-height: 1.625; }
.dark .step-desc { color: var(--gray-400); }

/* --- Testimonials --- */
.testimonial-grid { display: grid; gap: 2rem; }
@media(min-width:768px){.testimonial-grid{grid-template-columns:repeat(3,1fr)}}
.testimonial-card {
  background: #fff; padding: 2rem; border-radius: 2rem;
  box-shadow: var(--shadow-lg); border: 1px solid var(--gray-100);
  transition: all 0.3s; display: flex; flex-direction: column; height: 100%;
}
.testimonial-card:hover { transform: translateY(-8px); }
.dark .testimonial-card { background: var(--dark-card); border-color: rgba(255,255,255,0.05); }
.stars { display: flex; color: var(--yellow-400); margin-bottom: 1.5rem; font-size: 1.125rem; }
.testimonial-text { color: var(--gray-700); margin-bottom: 2rem; font-style: italic; line-height: 1.625; flex-grow: 1; }
.dark .testimonial-text { color: var(--gray-300); }
.testimonial-author { display: flex; align-items: center; gap: 1rem; margin-top: auto; padding-top: 1.5rem; border-top: 1px solid var(--gray-100); }
.dark .testimonial-author { border-color: rgba(255,255,255,0.05); }
.author-avatar {
  width: 3rem; height: 3rem; border-radius: 9999px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: #fff; font-size: 1.125rem; box-shadow: var(--shadow-md);
}
.author-name { font-weight: 700; color: var(--gray-900); font-size: 1.125rem; }
.dark .author-name { color: #fff; }
.author-badge { font-size: 0.875rem; color: var(--primary-600); font-weight: 500; }
.dark .author-badge { color: var(--primary-400); }

/* --- FAQ --- */
.faq-list {
  display: flex; flex-direction: column; max-width: 48rem; margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--gray-200);
  overflow: hidden; transition: all 0.3s ease;
}
.faq-item:first-child { border-top: 1px solid var(--gray-200); }
.dark .faq-item { border-color: rgba(255,255,255,0.06); }
.dark .faq-item:first-child { border-color: rgba(255,255,255,0.06); }

.faq-summary {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.75rem 0; cursor: pointer; list-style: none; transition: all 0.3s;
}
.faq-summary:hover .faq-question { color: var(--primary-600); }
.dark .faq-summary:hover .faq-question { color: var(--cyan-400); }

.faq-summary::-webkit-details-marker { display: none; }

.faq-question {
  font-size: 1.125rem; font-weight: 600; color: var(--gray-900);
  padding-right: 2rem; transition: color 0.3s; margin: 0;
}
@media(min-width:768px){.faq-question { font-size: 1.25rem; }}
.dark .faq-question { color: #fff; }

.faq-icon {
  width: 2.25rem; height: 2.25rem; border-radius: 50%; flex-shrink: 0;
  background: var(--gray-100); color: var(--gray-600);
  display: flex; align-items: center; justify-content: center; font-size: 1.125rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-item:hover .faq-icon { background: var(--primary-100); color: var(--primary-600); }
.dark .faq-icon { background: rgba(255,255,255,0.05); color: var(--gray-400); }
.dark .faq-item:hover .faq-icon { background: rgba(14,165,233,0.15); color: var(--cyan-400); }

.faq-item[open] .faq-icon {
  background: var(--primary-600); color: #fff; transform: rotate(45deg);
}
.dark .faq-item[open] .faq-icon {
  background: var(--cyan-500); color: #111827; transform: rotate(45deg);
}

.faq-answer {
  padding: 0 0 1.75rem 0; color: var(--gray-600); font-size: 1.0625rem; line-height: 1.75;
  animation: slide-down 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.dark .faq-answer { color: var(--gray-400); }

@keyframes slide-down {
  0% { opacity: 0; transform: translateY(-10px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* --- Technology Section --- */
.tech-section { padding: 4rem 0; position: relative; overflow: hidden; }
@media(min-width:768px){.tech-section{padding:6rem 0}}
.tech-visual {
  position: relative; background: rgba(255,255,255,0.8); backdrop-filter: blur(16px);
  border-radius: 2rem; padding: 1.25rem; border: 1px solid rgba(255,255,255,0.2);
  box-shadow: var(--shadow-2xl); transition: transform 0.5s;
}
.tech-visual:hover { transform: scale(1.02); }
.dark .tech-visual { background: rgba(17,24,39,0.8); border-color: rgba(255,255,255,0.1); }
@media(min-width:768px){.tech-visual{padding:2rem}}
.tech-visual-glow {
  position: absolute; inset: -1rem; border-radius: 9999px; filter: blur(24px);
  background: linear-gradient(to right, var(--primary-500), var(--secondary-500));
  opacity: 0.3; transition: opacity 0.5s;
}
.tech-visual:hover .tech-visual-glow { opacity: 0.5; }
.tech-animation {
  position: relative; height: 12rem; width: 100%; display: flex; align-items: center;
  justify-content: center; overflow: hidden; border-radius: 0.75rem;
  background: var(--gray-50);
}
@media(min-width:768px){.tech-animation{height:16rem}}
.dark .tech-animation { background: rgba(11,15,25,0.5); }
.tech-ring {
  position: absolute; border-radius: 9999px; border: 4px solid;
}
.tech-ring-1 { width: 8rem; height: 8rem; border-color: rgba(14,165,233,0.3); animation: ping 3s linear infinite; }
.tech-ring-2 { width: 6rem; height: 6rem; border-color: rgba(14,165,233,0.5); animation: ping 3s linear infinite 1s; }
.tech-ring-3 { width: 4rem; height: 4rem; border-color: rgba(14,165,233,0.7); animation: ping 3s linear infinite 2s; }
.tech-flex { display: flex; flex-direction: column; gap: 2.5rem; }
@media(min-width:768px){.tech-flex{flex-direction:row; align-items:center; gap:4rem}}
.tech-half { width: 100%; }
@media(min-width:768px){.tech-half{width:50%}}

/* --- Comparison Table --- */
.comparison-table { width: 100%; border-collapse: collapse; border-radius: 1rem; overflow: hidden; }
.comparison-table th {
  background: linear-gradient(to right, var(--primary-600), var(--blue-600));
  color: #fff; padding: 1rem; text-align: left; font-weight: 600; font-size: 0.875rem;
}
.comparison-table td {
  padding: 1rem; border-bottom: 1px solid var(--gray-100); color: var(--gray-700); font-size: 0.875rem;
}
.dark .comparison-table td { border-color: rgba(255,255,255,0.05); color: var(--gray-300); }
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tbody tr { background: #fff; transition: background 0.2s; }
.comparison-table tbody tr:nth-child(even) { background: var(--gray-50); }
.comparison-table tbody tr:hover { background: var(--primary-50); }
.dark .comparison-table tbody tr { background: var(--dark-card); }
.dark .comparison-table tbody tr:nth-child(even) { background: rgba(17,24,39,0.5); }
.dark .comparison-table tbody tr:hover { background: rgba(14,165,233,0.1); }
.comparison-table .highlight-row { background: rgba(14,165,233,0.08) !important; }
.dark .comparison-table .highlight-row { background: rgba(14,165,233,0.15) !important; }
.check { color: var(--green-600); font-weight: 700; }
.cross { color: #ef4444; font-weight: 700; }

/* --- Scenario Cards --- */
.scenario-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1rem; }
@media(min-width:768px){.scenario-grid{grid-template-columns:repeat(3,1fr)}}
.scenario-card {
  background: #fff; padding: 1.5rem; border-radius: 1rem; border: 1px solid var(--gray-100);
  text-align: center; transition: all 0.3s;
}
.scenario-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.dark .scenario-card { background: var(--dark-card); border-color: rgba(255,255,255,0.05); }
.scenario-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.scenario-title { font-weight: 600; color: var(--gray-900); font-size: 0.875rem; }
.dark .scenario-title { color: #fff; }

/* --- Tips Section --- */
.tips-grid { display: grid; gap: 1.5rem; }
@media(min-width:768px){.tips-grid{grid-template-columns:repeat(2,1fr)}}
.tip-card {
  display: flex; gap: 1rem; background: #fff; padding: 1.5rem; border-radius: 1rem;
  border: 1px solid var(--gray-100); transition: all 0.3s;
}
.tip-card:hover { box-shadow: var(--shadow-lg); }
.dark .tip-card { background: var(--dark-card); border-color: rgba(255,255,255,0.05); }
.tip-number {
  width: 2.5rem; height: 2.5rem; flex-shrink: 0; border-radius: 0.75rem;
  background: linear-gradient(to bottom right, var(--primary-500), var(--blue-600));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.875rem;
}
.tip-title { font-weight: 700; color: var(--gray-900); margin-bottom: 0.25rem; }
.dark .tip-title { color: #fff; }
.tip-desc { color: var(--gray-600); font-size: 0.875rem; line-height: 1.5; }
.dark .tip-desc { color: var(--gray-400); }

/* --- Content Block (Science/Editorial) --- */
.content-block { max-width: 56rem; margin: 0 auto; }
.content-block p {
  color: var(--gray-600); font-size: 1.125rem; line-height: 1.75; margin-bottom: 1.5rem;
}
.dark .content-block p { color: var(--gray-300); }
.content-block strong { color: var(--gray-900); }
.dark .content-block strong { color: #fff; }
.content-highlight {
  color: var(--primary-600); font-weight: 600;
}
.dark .content-highlight { color: var(--primary-400); }

/* --- Page Header (for subpages) --- */
.page-header {
  padding: 8rem 0 4rem; position: relative; overflow: hidden;
  background: linear-gradient(to bottom right, var(--gray-900), rgba(30,58,138,0.3));
}
.page-header-orb {
  position: absolute; width: 18rem; height: 18rem; border-radius: 9999px; filter: blur(120px);
}
@media(min-width:768px){.page-header-orb{width:24rem;height:24rem}}
.page-header-title {
  font-size: 2.25rem; font-family: var(--font-heading); font-weight: 800;
  color: #fff; margin-bottom: 1rem;
}
@media(min-width:768px){.page-header-title{font-size:3rem}}
.page-header-subtitle { color: var(--gray-300); font-size: 1.125rem; max-width: 42rem; margin: 0 auto; }

/* --- Page Content (legal/about) --- */
.page-content { padding: 4rem 0; }
.page-content h2 {
  font-size: 1.5rem; font-family: var(--font-heading); font-weight: 700;
  color: var(--gray-900); margin: 2rem 0 1rem; padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--primary-100);
}
.dark .page-content h2 { color: #fff; border-color: rgba(14,165,233,0.2); }
.page-content h3 { font-size: 1.25rem; font-weight: 600; color: var(--gray-800); margin: 1.5rem 0 0.75rem; }
.dark .page-content h3 { color: var(--gray-200); }
.page-content p { color: var(--gray-600); line-height: 1.75; margin-bottom: 1rem; font-size: 1.0625rem; }
.dark .page-content p { color: var(--gray-400); }
.page-content ul { margin: 1rem 0; padding-left: 1.5rem; }
.page-content li { color: var(--gray-600); line-height: 1.75; margin-bottom: 0.5rem; position: relative; padding-left: 1rem; }
.dark .page-content li { color: var(--gray-400); }
.page-content li::before { content: ""; position: absolute; left: 0; top: 0.75rem; width: 6px; height: 6px; border-radius: 50%; background: var(--primary-500); }
.page-content a { color: var(--primary-600); text-decoration: underline; }
.dark .page-content a { color: var(--primary-400); }

/* --- Team Cards --- */
.team-grid { display: grid; gap: 2rem; }
@media(min-width:768px){.team-grid{grid-template-columns:repeat(3,1fr)}}
.team-card {
  background: #fff; border-radius: 1.5rem; overflow: hidden;
  box-shadow: var(--shadow-lg); border: 1px solid var(--gray-100); text-align: center; transition: all 0.3s;
}
.team-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.dark .team-card { background: var(--dark-card); border-color: rgba(255,255,255,0.05); }
.team-photo { width: 6rem; height: 6rem; border-radius: 9999px; margin: 2rem auto 1rem; object-fit: cover; border: 4px solid var(--primary-100); }
.dark .team-photo { border-color: rgba(14,165,233,0.2); }
.team-name { font-weight: 700; font-size: 1.25rem; color: var(--gray-900); }
.dark .team-name { color: #fff; }
.team-role { color: var(--primary-600); font-weight: 500; font-size: 0.875rem; }
.dark .team-role { color: var(--primary-400); }
.team-bio { color: var(--gray-600); padding: 1rem 1.5rem 1.5rem; font-size: 0.9375rem; line-height: 1.625; }
.dark .team-bio { color: var(--gray-400); }

/* --- Contact Form --- */
.contact-form { max-width: 42rem; margin: 0 auto; }
.form-group { margin-bottom: 1.5rem; }
.form-label { display: block; font-weight: 600; color: var(--gray-700); margin-bottom: 0.5rem; font-size: 0.9375rem; }
.dark .form-label { color: var(--gray-300); }
.form-input, .form-textarea {
  width: 100%; padding: 0.75rem 1rem; border-radius: 0.75rem;
  border: 1px solid var(--gray-200); background: #fff; color: var(--gray-900);
  font-size: 1rem; transition: all 0.2s; outline: none;
}
.form-input:focus, .form-textarea:focus { border-color: var(--primary-500); box-shadow: 0 0 0 3px rgba(14,165,233,0.15); }
.dark .form-input, .dark .form-textarea { background: var(--gray-800); border-color: var(--gray-700); color: var(--gray-100); }
.form-textarea { resize: vertical; min-height: 8rem; }
.form-submit {
  width: 100%; padding: 0.875rem; border-radius: 0.75rem; font-weight: 600; font-size: 1rem;
  background: linear-gradient(to right, var(--primary-500), var(--blue-600));
  color: #fff; cursor: pointer; transition: all 0.3s; box-shadow: 0 4px 14px rgba(14,165,233,0.3);
}
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(14,165,233,0.4); }

/* --- Footer --- */
.site-footer {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, #0a0e1a 0%, #0d1225 40%, #0f1630 100%);
  color: #fff; padding: 0 0 0;
}

/* Gradient top border */
.footer-gradient-border {
  height: 4px;
  background: linear-gradient(90deg, var(--cyan-400), var(--primary-500), var(--secondary-500), var(--pink-400), var(--cyan-400));
  background-size: 300% 100%;
  animation: gradient-x 8s ease infinite;
}

/* Background pattern */
.footer-bg-pattern {
  position: absolute; inset: 0; opacity: 0.25; pointer-events: none;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.04) 1px, transparent 0);
  background-size: 28px 28px;
}

/* Floating orbs */
.footer-orb {
  position: absolute; border-radius: 9999px; filter: blur(100px); pointer-events: none;
}
.footer-orb-1 {
  width: 400px; height: 400px; top: -120px; left: -80px;
  background: radial-gradient(circle, rgba(14,165,233,0.15), transparent 70%);
  animation: float 10s ease-in-out infinite;
}
.footer-orb-2 {
  width: 350px; height: 350px; bottom: -80px; right: -60px;
  background: radial-gradient(circle, rgba(139,92,246,0.12), transparent 70%);
  animation: float 12s ease-in-out infinite reverse;
}

.footer-grid {
  display: grid; gap: 3rem; padding: 4.5rem 1rem 3rem;
  position: relative; z-index: 10;
}
@media(min-width:768px){.footer-grid{grid-template-columns: 2fr 1.2fr 1.2fr 1.5fr; gap: 2rem; padding: 4.5rem 0 3rem;}}

/* Brand column */
.footer-col-brand { max-width: 24rem; }
.footer-brand { display: flex; align-items: center; gap: 0.875rem; margin-bottom: 1.25rem; }
.footer-brand-icon {
  position: relative; width: 3.25rem; height: 3.25rem; border-radius: 1rem;
  background: linear-gradient(135deg, var(--primary-500), var(--cyan-500));
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.5rem;
  box-shadow: 0 0 24px rgba(14,165,233,0.3);
}
.footer-brand-glow {
  position: absolute; inset: -4px; border-radius: 50%; z-index: -1;
  background: radial-gradient(circle, var(--cyan-400), var(--primary-500));
  opacity: 0.4; filter: blur(20px);
  animation: pulse-soft 4s ease-in-out infinite;
}
.footer-brand-name {
  font-size: 1.5rem; font-family: var(--font-heading); font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff, var(--primary-200));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.footer-desc {
  color: var(--gray-400); max-width: 22rem; margin-bottom: 1.75rem;
  font-size: 0.9375rem; line-height: 1.7;
}

/* Social links */
.footer-social { display: flex; gap: 0.75rem; }
.social-link {
  width: 2.75rem; height: 2.75rem; border-radius: 0.75rem;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center; color: var(--gray-400);
  transition: all 0.3s; font-size: 1.125rem;
}
.social-link:hover {
  background: linear-gradient(135deg, var(--primary-600), var(--cyan-600));
  color: #fff; border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(14,165,233,0.25);
}

/* Footer columns */
.footer-heading {
  display: flex; align-items: center; gap: 0.625rem;
  font-weight: 700; font-size: 1rem; margin-bottom: 1.75rem;
  color: #fff; letter-spacing: 0.01em;
}
.footer-heading-icon {
  width: 1.75rem; height: 1.75rem; border-radius: 0.5rem;
  background: rgba(14,165,233,0.12); color: var(--primary-400);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.875rem;
}
.footer-links { display: flex; flex-direction: column; gap: 0.875rem; }
.footer-link {
  color: var(--gray-400); transition: all 0.25s; display: flex; align-items: center; gap: 0.625rem;
  font-size: 0.9375rem; text-decoration: none;
}
.footer-link:hover { color: #fff; transform: translateX(4px); }
.footer-link-dot {
  width: 5px; height: 5px; border-radius: 9999px;
  background: var(--gray-600); flex-shrink: 0;
  transition: all 0.25s;
}
.footer-link:hover .footer-link-dot {
  background: var(--primary-400);
  box-shadow: 0 0 8px rgba(14,165,233,0.5);
}

/* CTA column */
.footer-cta-text {
  color: var(--gray-400); font-size: 0.9375rem; line-height: 1.6; margin-bottom: 1.25rem;
}
.footer-cta-btn {
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  width: 100%; padding: 0.75rem 1rem; border-radius: 0.75rem;
  background: linear-gradient(135deg, var(--primary-500), var(--cyan-500));
  color: #fff; font-weight: 600; font-size: 0.9375rem;
  box-shadow: 0 4px 16px rgba(14,165,233,0.3);
  transition: all 0.3s; margin-bottom: 0.875rem; text-decoration: none;
}
.footer-cta-btn:hover {
  transform: translateY(-2px); box-shadow: 0 8px 24px rgba(14,165,233,0.4);
}
.footer-chrome-link {
  display: flex; align-items: center; gap: 0.5rem;
  color: var(--gray-400); font-size: 0.875rem; transition: all 0.25s;
  text-decoration: none;
}
.footer-chrome-link:hover { color: var(--primary-400); }
.footer-chrome-link i:last-child { font-size: 0.75rem; opacity: 0.5; }

/* Footer bottom */
.footer-bottom {
  display: flex; flex-direction: column; gap: 1rem;
  align-items: center; justify-content: space-between;
  border-top: 1px solid rgba(255,255,255,0.06); padding: 1.75rem 0;
  position: relative; z-index: 10;
}
@media(min-width:768px){.footer-bottom{flex-direction:row}}
.footer-bottom-left p { color: var(--gray-500); font-size: 0.875rem; }
.footer-bottom-right { display: flex; align-items: center; gap: 1.25rem; }
.footer-made-with {
  color: var(--gray-500); font-size: 0.8125rem;
  display: flex; align-items: center; gap: 0.375rem;
}
.footer-heart {
  color: #ef4444; font-size: 0.875rem;
  animation: pulse-soft 2s ease-in-out infinite;
}
.back-to-top {
  width: 2.5rem; height: 2.5rem; border-radius: 0.625rem;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-400); font-size: 1.125rem; transition: all 0.3s;
  text-decoration: none;
}
.back-to-top:hover {
  background: var(--primary-600); color: #fff; border-color: var(--primary-500);
  transform: translateY(-3px); box-shadow: 0 6px 16px rgba(14,165,233,0.3);
}

/* --- Toast --- */
.toast {
  position: fixed; bottom: 1rem; right: 1rem; z-index: 50;
  background: var(--primary-600); color: #fff; padding: 0.75rem 1.5rem;
  border-radius: 0.75rem; box-shadow: var(--shadow-lg);
  transform: translateY(150%); transition: transform 0.3s;
}
.toast.show { transform: translateY(0); }

/* --- Dark mode icon toggle --- */
.dark .icon-sun { display: none; }
.dark .icon-moon { display: inline; }
.icon-moon { display: none; }
.dark .icon-moon { display: inline; }

/* --- Responsive helpers --- */
@media(max-width:767px) {
  .md-hide { display: none !important; }
  .hero { padding: 6rem 0 3rem; }
}
@media(min-width:768px) {
  .sm-hide { display: none !important; }
}

/* ============================================
   Language Switcher
   ============================================ */
.lang-switcher {
  position: relative;
}
.lang-switcher-btn {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-700);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.lang-switcher-btn:hover {
  border-color: var(--primary-400);
  color: var(--primary-600);
}
.lang-switcher-btn i:first-child { font-size: 1rem; }
.lang-arrow {
  font-size: 0.875rem;
  transition: transform 0.2s;
}
.lang-switcher.open .lang-arrow { transform: rotate(180deg); }
.lang-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  width: 260px;
  max-height: 0;
  overflow: hidden;
  background: var(--white);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
  z-index: 999;
  opacity: 0;
  transform: translateY(-4px);
  transition: max-height 0.3s, opacity 0.2s, transform 0.2s;
}
.lang-switcher.open .lang-dropdown {
  max-height: 360px;
  opacity: 1;
  transform: translateY(0);
}
.lang-dropdown-inner {
  max-height: 350px;
  overflow-y: auto;
  padding: 0.5rem;
}
.lang-dropdown-inner::-webkit-scrollbar { width: 4px; }
.lang-dropdown-inner::-webkit-scrollbar-track { background: transparent; }
.lang-dropdown-inner::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 2px; }
.lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  text-decoration: none;
  color: var(--gray-700);
  font-size: 0.8125rem;
  transition: background 0.15s;
}
.lang-option:hover { background: var(--gray-100); }
.lang-option.active {
  background: var(--primary-50);
  color: var(--primary-600);
  font-weight: 600;
}
.lang-option-native { font-weight: 600; }
.lang-option-en { color: var(--gray-400); font-size: 0.75rem; }

/* Mobile Language Switcher */
.mobile-lang-section {
  padding: 1rem 0;
  margin-top: 0.5rem;
  border-top: 1px solid var(--gray-200);
}
.mobile-lang-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  padding: 0 0.5rem;
}
.mobile-lang-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  padding: 0 0.5rem;
  margin-bottom: 2rem;
}
.mobile-lang-option {
  display: block;
  padding: 0.5rem 0.25rem;
  text-align: center;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-600);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mobile-lang-option:hover { background: var(--gray-100); }
.mobile-lang-option.active {
  background: var(--primary-50);
  color: var(--primary-600);
  font-weight: 600;
}

/* Dark mode overrides for language switcher */
.dark .lang-switcher-btn {
  background: var(--dark-card);
  border-color: rgba(255,255,255,0.1);
  color: var(--gray-300);
}
.dark .lang-switcher-btn:hover { border-color: var(--primary-400); color: var(--primary-400); }
.dark .lang-dropdown {
  background: var(--dark-card);
  border-color: rgba(255,255,255,0.1);
}
.dark .lang-option { color: var(--gray-300); }
.dark .lang-option:hover { background: rgba(255,255,255,0.05); }
.dark .lang-option.active { background: rgba(14,165,233,0.15); color: var(--primary-400); }
.dark .lang-option-en { color: var(--gray-500); }
.dark .mobile-lang-section { border-color: rgba(255,255,255,0.1); }
.dark .mobile-lang-option { color: var(--gray-400); }
.dark .mobile-lang-option:hover { background: rgba(255,255,255,0.05); }
.dark .mobile-lang-option.active { background: rgba(14,165,233,0.15); color: var(--primary-400); }

/* ============================================
   RTL Support
   ============================================ */
html[dir="rtl"] {
  direction: rtl;
  text-align: right;
}
html[dir="rtl"] .text-center { text-align: center; }
html[dir="rtl"] .nav-inner { flex-direction: row-reverse; }
html[dir="rtl"] .nav-links { flex-direction: row-reverse; }
html[dir="rtl"] .nav-links-group { flex-direction: row-reverse; }
html[dir="rtl"] .nav-actions { flex-direction: row-reverse; }
html[dir="rtl"] .mobile-controls { flex-direction: row-reverse; }
html[dir="rtl"] .mobile-menu { left: 0; right: auto; transform: translateX(-100%); }
html[dir="rtl"] .mobile-menu.active { transform: translateX(0); }
html[dir="rtl"] .nav-brand { flex-direction: row-reverse; }
html[dir="rtl"] .footer-grid { direction: rtl; }
html[dir="rtl"] .footer-brand { flex-direction: row-reverse; }
html[dir="rtl"] .footer-link { flex-direction: row-reverse; }
html[dir="rtl"] .footer-link-dot { margin-left: 0.5rem; margin-right: 0; }
html[dir="rtl"] .footer-heading { flex-direction: row-reverse; }
html[dir="rtl"] .footer-bottom { flex-direction: row-reverse; }
html[dir="rtl"] .flex.items-center.gap-4 { flex-direction: row-reverse; }
html[dir="rtl"] .hero-badge { flex-direction: row-reverse; }
html[dir="rtl"] .step-card { text-align: right; }
html[dir="rtl"] .tip-card { flex-direction: row-reverse; text-align: right; }
html[dir="rtl"] .tip-number { margin-left: 1rem; margin-right: 0; }
html[dir="rtl"] .feature-card { text-align: right; }
html[dir="rtl"] .testimonial-author { flex-direction: row-reverse; }
html[dir="rtl"] .tech-flex { flex-direction: row-reverse; }
html[dir="rtl"] .faq-summary { flex-direction: row-reverse; }
html[dir="rtl"] .faq-question { text-align: right; }
html[dir="rtl"] .chrome-btn { flex-direction: row-reverse; }
html[dir="rtl"] .chrome-arrow { transform: scaleX(-1); }
html[dir="rtl"] .play-btn { flex-direction: row-reverse; }
html[dir="rtl"] .lang-dropdown { left: 0; right: auto; }
html[dir="rtl"] .mobile-lang-label { flex-direction: row-reverse; }
html[dir="rtl"] .lang-option { flex-direction: row-reverse; }
html[dir="rtl"] .slider-labels { flex-direction: row-reverse; }
html[dir="rtl"] .tab-bar { flex-direction: row-reverse; }
html[dir="rtl"] .btn-grid { flex-direction: row-reverse; }
html[dir="rtl"] .btn-grid-4 { flex-direction: row-reverse; }

@media(max-width:767px) {
  html[dir="rtl"] .tech-flex { flex-direction: column-reverse; }
}