/* ═══════════════════════════════════════════════════════════════
   MediaVault — main.css
   Modern, Fast, Highly-Responsive Jio-Blue & White Design System
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ─── Design Tokens ──────────────────────────────────────────── */
:root {
  /* Jio Blue Palette */
  --blue-50:   #eff6ff;
  --blue-100:  #dbeafe;
  --blue-200:  #bfdbfe;
  --blue-400:  #60a5fa;
  --blue-500:  #3b82f6;
  --blue-600:  #2563eb;
  --blue-700:  #1d4ed8;
  --blue-800:  #1e40af;
  --blue-900:  #1e3a8a;

  /* Primary Accent */
  --primary:          #0057d9;
  --primary-hover:    #0049c0;
  --primary-light:    #e8f0fe;
  --primary-border:   #b3ccfa;

  /* Backgrounds — crisp white */
  --bg-primary:    #ffffff;
  --bg-secondary:  #f8fafc;
  --bg-card:       #ffffff;
  --bg-card-hover: #f0f5ff;
  --bg-input:      #ffffff;
  --bg-overlay:    rgba(10, 15, 30, 0.65);
  --bg-blue-tint:  #eef3ff;

  /* Text */
  --text-primary:   #0f172a;
  --text-secondary: #334155;
  --text-muted:     #64748b;
  --text-white:     #ffffff;
  --text-blue:      #0057d9;

  /* Borders */
  --border-subtle: #e2e8f0;
  --border-normal: #cbd5e1;
  --border-accent: #93c5fd;
  --border-blue:   #3b82f6;

  /* Gradients */
  --gradient-main:      linear-gradient(135deg, #0057d9 0%, #0096ff 100%);
  --gradient-hero:      linear-gradient(165deg, #eff6ff 0%, #ffffff 45%, #f1f5f9 100%);
  --gradient-card:      linear-gradient(145deg, #f8fafc 0%, #ffffff 100%);
  --gradient-glow:      radial-gradient(ellipse at center, rgba(0,87,217,0.12) 0%, transparent 70%);
  --gradient-shimmer:   linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.85) 50%, transparent 100%);
  --gradient-blue-soft: linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);

  /* Shadows */
  --shadow-card:   0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
  --shadow-raised: 0 8px 24px rgba(0,87,217,0.12), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-glow:   0 0 0 3px rgba(0,87,217,0.18);
  --shadow-btn:    0 4px 14px rgba(0,87,217,0.35);
  --shadow-input:  0 0 0 3px rgba(0,87,217,0.15);
  --shadow-navbar: 0 1px 0 #e2e8f0, 0 4px 16px rgba(0,0,0,0.03);

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;
  --space-3xl: 72px;

  /* Border Radius */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   14px;
  --radius-xl:   18px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-size-xs:  11px;
  --font-size-sm:  13px;
  --font-size-md:  15px;
  --font-size-base: 15px;
  --font-size-lg:  18px;
  --font-size-xl:  22px;
  --font-size-2xl: 28px;
  --font-size-3xl: 38px;
  --font-size-4xl: 52px;

  /* Transitions */
  --transition-fast:   0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   0.38s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index Hierarchy */
  --z-base:     1;
  --z-backdrop: 1100;
  --z-drawer:   1200;
  --z-sticky:   1300;
  --z-modal:    1400;
  --z-toast:    2000;
  --z-overlay:  3000;
}

/* ─── Dark Mode ──────────────────────────────────────────────── */
[data-theme="dark"] {
  --bg-primary:    #090d16;
  --bg-secondary:  #0f172a;
  --bg-card:       #131d35;
  --bg-card-hover: #1a2747;
  --bg-input:      #16203b;
  --bg-overlay:    rgba(0, 0, 0, 0.82);
  --bg-blue-tint:  #141f3c;

  --text-primary:   #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted:     #94a3b8;
  --text-blue:      #60a5fa;

  --border-subtle: rgba(255,255,255,0.08);
  --border-normal: rgba(255,255,255,0.14);
  --border-accent: rgba(96,165,250,0.4);
  --border-blue:   #3b82f6;

  --shadow-card:   0 2px 16px rgba(0,0,0,0.45);
  --shadow-raised: 0 8px 32px rgba(0,0,0,0.55);
  --shadow-btn:    0 4px 16px rgba(0,87,217,0.45);
  --shadow-navbar: 0 1px 0 rgba(255,255,255,0.08);
  --gradient-hero: linear-gradient(165deg, #0b1120 0%, #090d16 100%);
}

/* ─── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  touch-action: manipulation;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-family); }
input, textarea, select { font-family: var(--font-family); outline: none; }
ul, ol { list-style: none; }

/* ─── Scrollbars ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-normal); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ─── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(24px, 5.5vw, 48px); }
h2 { font-size: clamp(20px, 4vw, 32px); }
h3 { font-size: clamp(17px, 3vw, 24px); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }
p  { color: var(--text-secondary); line-height: 1.7; font-size: var(--font-size-base); }

/* ─── Layout & Containers ────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.container-sm { max-width: 720px; margin: 0 auto; padding: 0 var(--space-lg); }
.container-lg { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); }

.text-center { text-align: center; }
.text-sm { font-size: var(--font-size-sm); }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-gradient {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.w-full { width: 100%; }
.hidden { display: none !important; }
.sr-only { position: absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0; }

/* ─── NAVBAR ─────────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--bg-primary);
  border-bottom: 1.5px solid var(--border-subtle);
  padding: 0;
  box-shadow: var(--shadow-navbar);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  gap: var(--space-md);
  position: relative;
}

/* Logo */
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: -0.03em;
}

.navbar-logo .logo-icon {
  width: 34px;
  height: 34px;
  background: var(--gradient-main);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 2px 8px rgba(0,87,217,0.3);
  flex-shrink: 0;
}

.navbar-logo .logo-text {
  color: var(--primary);
  font-weight: 900;
}

[data-theme="dark"] .navbar-logo .logo-text {
  color: #60a5fa;
}

/* Nav desktop links */
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 4px 0;
}

.navbar-nav::-webkit-scrollbar {
  display: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  background: rgba(96,165,250,0.15);
  color: #60a5fa;
}

/* Actions right */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  z-index: 5;
  background: var(--bg-primary);
  padding-left: 6px;
}

/* Mobile Hamburger Button */
.nav-hamburger {
  display: none;
  width: 42px;
  height: 42px;
  padding: 9px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1.5px solid var(--border-subtle);
  transition: all var(--transition-fast);
  z-index: 1250;
  position: relative;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.nav-hamburger:hover {
  background: var(--primary-light);
  border-color: var(--primary-border);
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  transform-origin: center;
  pointer-events: none;
}

/* Hamburger Open -> X Transform */
.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ─── Mobile Drawer & Backdrop ───────────────────────────────── */
.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-backdrop);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.nav-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.nav-mobile-menu {
  display: flex;
  position: fixed;
  top: 0;
  right: 0;
  width: 290px;
  max-width: 85vw;
  height: 100vh;
  height: 100dvh;
  background: var(--bg-primary);
  border-left: 1.5px solid var(--border-subtle);
  padding: calc(75px + env(safe-area-inset-top, 0px)) 18px 24px;
  z-index: var(--z-drawer);
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
  box-shadow: -8px 0 32px rgba(0,0,0,0.3);
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.nav-mobile-menu.open {
  transform: translateX(0);
  pointer-events: auto;
}

.nav-mobile-menu .nav-link {
  font-size: 15px;
  font-weight: 600;
  padding: 11px 16px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.nav-mobile-menu .nav-link:active {
  background: var(--primary-light);
}

.nav-mobile-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 10px 0;
}

.nav-mobile-auth {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
}

/* ─── Page Layout ────────────────────────────────────────────── */
.page {
  min-height: calc(100vh - 62px);
  padding: var(--space-xl) 0 var(--space-3xl);
  background: var(--bg-secondary);
}

[data-theme="dark"] .page { background: var(--bg-primary); }

.page-header {
  text-align: center;
  margin-bottom: var(--space-xl);
  padding: 0 var(--space-md);
}

.page-header h1 {
  font-size: clamp(24px, 5vw, 40px);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.page-header p {
  font-size: var(--font-size-md);
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ─── Section Titles ─────────────────────────────────────────── */
.section-title {
  font-size: clamp(17px, 3.5vw, 22px);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
  margin-left: var(--space-sm);
}

/* ─── Search Card ────────────────────────────────────────────── */
.search-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-lg) var(--space-xl);
  box-shadow: var(--shadow-card);
  max-width: 680px;
  margin: 0 auto var(--space-xl);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.search-card:focus-within {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow), var(--shadow-card);
}
.search-card-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}
.search-row {
  display: flex;
  gap: var(--space-sm);
}
.search-helper {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
  text-align: center;
  line-height: 1.5;
}

/* ─── Responsive Breakpoints ─────────────────────────────────── */
@media (max-width: 1180px) {
  .navbar-nav { display: none !important; }
  .nav-hamburger { display: flex !important; }
  .navbar-inner { justify-content: space-between; }
}

@media (max-width: 860px) {
  /* Hide desktop auth buttons from top navbar on tablet & phone */
  .navbar-actions #nav-login,
  .navbar-actions #nav-signup,
  .navbar-actions #nav-user-info,
  .navbar-actions [data-auth="hide"],
  .navbar-actions [data-auth="show"] {
    display: none !important;
  }
  .navbar-actions {
    gap: 10px;
  }
}

@media (max-width: 768px) {
  .container, .container-sm, .container-lg { padding: 0 var(--space-md); }
  .page { padding: var(--space-md) 0 var(--space-2xl); }
  .page-header { margin-bottom: var(--space-lg); }
  
  .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .grid-2 { grid-template-columns: 1fr; gap: 12px; }

  .search-card { padding: var(--space-md); margin-bottom: var(--space-lg); border-radius: var(--radius-lg); }
  
  .search-row {
    display: flex !important;
    flex-direction: column !important;
    gap: 10px !important;
    width: 100% !important;
  }
  .search-row input,
  .search-row .input {
    width: 100% !important;
    min-width: 100% !important;
    box-sizing: border-box !important;
    font-size: 15px !important;
    padding: 12px 14px !important;
  }
  .search-row button,
  .search-row .btn,
  .search-row .btn-paste,
  .search-row .tt-brand-btn,
  .search-row .tw-brand-btn,
  .search-row .pin-brand-btn {
    width: 100% !important;
    min-height: 44px !important;
  }

  .navbar-inner { height: 56px; }
}

@media (max-width: 480px) {
  .grid-4, .grid-3 { grid-template-columns: 1fr; }
  .section-title { font-size: 17px; }
  .navbar-logo .logo-text { font-size: 17px; }
  .navbar-logo .logo-icon { width: 30px; height: 30px; font-size: 16px; }
}