/* ============================================================
   SmartCable – Global Design System  (css/global.css)
   CSS Reset · Root Variables · Typography · Utility Classes
   Mobile-first — NO hardcoded hex/font outside :root
   ============================================================ */

/* ── CSS Custom Properties ── */
:root {
  /* Primary Palette (per architecture doc) */
  --color-primary: #E63946;
  --color-primary-dark: #c62f3b;
  --color-primary-light: #ef5a66;
  --color-secondary: #1D3557;
  --color-secondary-light: #274773;
  --color-accent: #A8DADC;

  /* Neutrals */
  --color-white: #ffffff;
  --color-off-white: #f5f7fa;
  --color-gray-100: #eef1f5;
  --color-gray-200: #dce1e8;
  --color-gray-300: #b0b8c4;
  --color-gray-400: #8a95a5;
  --color-gray-500: #5f6b7a;
  --color-gray-600: #3d4a5c;
  --color-dark: #111827;
  --color-black: #000000;

  /* Semantic */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  /* Offers Page Gradients & Hex Replacements */
  --color-orange-500: #f97316;
  --color-orange-600: #ea580c;
  --color-purple-500: #8b5cf6;
  --color-purple-600: #7c3aed;
  --color-teal-500: #0d9488;
  --color-teal-600: #0f766e;
  --color-dark-bg: #0e1e36;

  /* Gradients (reference variables, no raw hex) */
  --gradient-hero: linear-gradient(135deg, var(--color-secondary) 0%, rgba(29, 53, 87, 0.7) 60%, transparent 100%);
  --gradient-cta: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  --gradient-dark: linear-gradient(180deg, var(--color-secondary) 0%, var(--color-dark-bg) 100%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);

  /* Typography */
  --font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;

  --fs-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.8rem);
  --fs-sm: clamp(0.8rem, 0.75rem + 0.3vw, 0.9rem);
  --fs-base: clamp(0.9rem, 0.85rem + 0.3vw, 1rem);
  --fs-md: clamp(1rem, 0.9rem + 0.5vw, 1.15rem);
  --fs-lg: clamp(1.15rem, 1rem + 0.75vw, 1.4rem);
  --fs-xl: clamp(1.4rem, 1.1rem + 1.5vw, 2rem);
  --fs-2xl: clamp(1.8rem, 1.3rem + 2.5vw, 2.8rem);
  --fs-3xl: clamp(2.2rem, 1.5rem + 3.5vw, 3.6rem);
  --fs-hero: clamp(2.6rem, 1.8rem + 4vw, 4.5rem);

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-normal: 1.6;
  --lh-relaxed: 1.8;

  /* Spacing */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --container-max: 1280px;
  --container-wide: 1440px;
  --navbar-height: 72px;
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.15), 0 4px 12px rgba(0,0,0,0.1);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.2), 0 8px 20px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 30px rgba(230, 57, 70, 0.3);
  --shadow-card: 0 2px 16px rgba(0,0,0,0.08);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* ── CSS Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: var(--lh-tight);
  font-weight: var(--fw-bold);
}

/* ── Layout Utilities ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.container--wide {
  max-width: var(--container-wide);
}

/* ── Section Utilities ── */
.section {
  padding-block: var(--space-3xl);
}

.section--dark {
  background: var(--gradient-dark);
  color: var(--color-white);
}

.section--light {
  background-color: var(--color-off-white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section__tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-sm);
  padding: var(--space-2xs) var(--space-md);
  background: rgba(230, 57, 70, 0.08);
  border-radius: var(--border-radius-full);
}

.section__title {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-extrabold);
  margin-bottom: var(--space-sm);
}

.section__subtitle {
  font-size: var(--fs-md);
  color: var(--color-gray-500);
  max-width: 600px;
  margin-inline: auto;
}

.section--dark .section__subtitle {
  color: var(--color-gray-300);
}

/* ── Button System ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75em 1.8em;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--border-radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn--primary {
  background: var(--gradient-cta);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.4);
}

.btn--secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn--secondary:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--color-secondary);
  color: var(--color-white);
}

.btn--dark:hover {
  background: var(--color-secondary-light);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.5em 1.4em;
  font-size: var(--fs-xs);
}

.btn--lg {
  padding: 1em 2.4em;
  font-size: var(--fs-base);
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--border-radius-full);
}

/* ── Card Utilities ── */
.card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card--glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card--glass:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

/* ── Badge System ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.25em 0.75em;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  border-radius: var(--border-radius-full);
}

.badge--popular {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
}

.badge--new {
  background: linear-gradient(135deg, var(--color-success), #34d399);
  color: var(--color-white);
}

.badge--hd {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
  color: var(--color-white);
}

/* ── Animations ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Page Hero (Interior) ── */
.page-hero {
  position: relative;
  padding: calc(var(--navbar-height) + var(--space-3xl)) 0 var(--space-3xl);
  background: var(--gradient-dark);
  color: var(--color-white);
  text-align: center;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(230, 57, 70, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background: rgba(230, 57, 70, 0.12);
  border: 1px solid rgba(230, 57, 70, 0.25);
  border-radius: var(--border-radius-full);
  color: var(--color-primary-light);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-extrabold);
  margin-bottom: var(--space-sm);
  position: relative;
  z-index: var(--z-base);
}

.page-hero__title span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-hero__subtitle {
  font-size: var(--fs-md);
  color: var(--color-gray-300);
  max-width: 560px;
  margin-inline: auto;
  position: relative;
  z-index: var(--z-base);
}

/* ── CTA Banner (shared) ── */
.cta-banner {
  padding-block: var(--space-4xl);
  background: var(--gradient-cta);
  color: var(--color-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before,
.cta-banner::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.cta-banner::before { width: 400px; height: 400px; top: -200px; left: -100px; }
.cta-banner::after  { width: 300px; height: 300px; bottom: -150px; right: -50px; }

.cta-banner__title {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-extrabold);
  margin-bottom: var(--space-md);
  position: relative;
  z-index: var(--z-base);
}

.cta-banner__desc {
  font-size: var(--fs-md);
  opacity: 0.9;
  margin-bottom: var(--space-xl);
  max-width: 540px;
  margin-inline: auto;
  position: relative;
  z-index: var(--z-base);
}

.cta-banner__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  position: relative;
  z-index: var(--z-base);
}

/* ── Scrollbar ── */
::-webkit-scrollbar       { width: 8px; }
::-webkit-scrollbar-track  { background: var(--color-gray-100); }
::-webkit-scrollbar-thumb  { background: var(--color-gray-300); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-gray-400); }

/* ── Selection ── */
::selection {
  background: rgba(230, 57, 70, 0.15);
  color: var(--color-secondary);
}

/* ── Utility Classes ── */
.u-hidden {
  display: none !important;
}

.u-text-center {
  text-align: center !important;
}

.u-w-full {
  width: 100% !important;
}

.u-color-white {
  color: var(--color-white) !important;
}

.u-inline-svg {
  display: inline-block;
  vertical-align: -1px;
}

.u-vertical-align-middle {
  vertical-align: -3px;
  margin-right: 8px;
}