/*
 * ═══════════════════════════════════════════════════════
 *  MetricMock — Base Stylesheet
 * ═══════════════════════════════════════════════════════
 *  Theme colors, reset, typography, navbar, footer,
 *  buttons, cards, animations, and utilities.
 *
 *  ✏️  Edit :root variables to change colors/fonts.
 * ═══════════════════════════════════════════════════════
 */

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

/* ── CSS Custom Properties ─────────────────────────── */
:root {
  /* Colors — edit these to rebrand */
  --color-primary:       #0A2540;
  --color-primary-light:  #122E4F;
  --color-primary-rgb:   10, 37, 64;
  --color-accent:        #00D4FF;
  --color-accent-dark:   #00B8DB;
  --color-accent-rgb:    0, 212, 255;
  --color-background:    #F7F9FC;
  --color-surface:       #FFFFFF;
  --color-text:          #1A1A2E;
  --color-text-light:    #6B7280;
  --color-text-on-dark:  #CBD5E1;
  --color-border:        #E2E8F0;
  --color-success:       #10B981;
  --color-star:          #FBBF24;

  /* Typography */
  --font-family:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs:        0.75rem;
  --font-size-sm:        0.875rem;
  --font-size-base:      1rem;
  --font-size-lg:        1.125rem;
  --font-size-xl:        1.25rem;
  --font-size-2xl:       1.5rem;
  --font-size-3xl:       1.875rem;
  --font-size-4xl:       2.25rem;
  --font-size-5xl:       3rem;
  --font-size-6xl:       3.75rem;

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

  /* Layout */
  --container-max:       1200px;
  --container-padding:   1.25rem;
  --navbar-height:       72px;

  /* Borders & Shadows */
  --radius-sm:   0.375rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:   0 10px 25px rgba(0,0,0,0.08), 0 4px 10px rgba(0,0,0,0.04);
  --shadow-xl:   0 20px 50px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.06);
  --shadow-glow: 0 0 30px rgba(var(--color-accent-rgb), 0.3);

  /* 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);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--navbar-height);
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

/* ── Container ─────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ── Section Blocks ────────────────────────────────── */
.section {
  padding: var(--space-4xl) 0;
}

.section--dark {
  background-color: var(--color-primary);
  color: var(--color-text-on-dark);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-3xl);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section--dark .section-title {
  color: var(--color-surface);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: 1.6;
}

.section--dark .section-subtitle {
  color: var(--color-text-on-dark);
}

/* ── Typography ────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-5xl); font-weight: 900; }
h2 { font-size: var(--font-size-3xl); font-weight: 800; }
h3 { font-size: var(--font-size-xl);  font-weight: 700; }

/* ── Buttons ───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-weight: 600;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  text-decoration: none;
  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 50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(var(--color-accent-rgb), 0.35);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(var(--color-accent-rgb), 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

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

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

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: var(--font-size-base);
  border-radius: var(--radius-xl);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--font-size-xs);
}

/* ── Cards ─────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(var(--color-accent-rgb), 0.2);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.1), rgba(var(--color-accent-rgb), 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  color: var(--color-accent);
  transition: all var(--transition-base);
}

.card:hover .card-icon {
  background: linear-gradient(135deg, var(--color-accent), rgba(var(--color-accent-rgb), 0.8));
  color: var(--color-primary);
  transform: scale(1.05);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.card-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ── Grid Layouts ──────────────────────────────────── */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ── Navbar ────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 1000;
  transition: all var(--transition-base);
  background: rgba(var(--color-primary-rgb), 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.navbar.scrolled {
  background: rgba(var(--color-primary-rgb), 0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,0.15);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav-brand .brand-accent {
  color: var(--color-accent);
}

.nav-brand__logo {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-on-dark);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.25rem;
  background: var(--color-accent);
  color: var(--color-primary) !important;
  font-weight: 700 !important;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
  box-shadow: 0 2px 12px rgba(var(--color-accent-rgb), 0.3);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(var(--color-accent-rgb), 0.45);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 1001;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  display: block;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ── Footer ────────────────────────────────────────── */
.footer {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-md);
  letter-spacing: -0.03em;
}

.footer-brand__logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
}

.footer-brand .brand-accent {
  color: var(--color-accent);
}

.footer-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-on-dark);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-on-dark);
  transition: all var(--transition-fast);
  padding: var(--space-xs) 0;
}

.footer-links a:hover {
  color: var(--color-accent);
  transform: translateX(4px);
  display: inline-block;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-sm);
}

.footer-contact-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.footer-divider {
  height: 1px;
  background: rgba(255,255,255,0.08);
  margin-bottom: var(--space-lg);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.4);
}

/* ── Scroll Animations ─────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Staggered delays for children */
.stagger-children > *:nth-child(1) { transition-delay: 0s;   }
.stagger-children > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-children > *:nth-child(4) { transition-delay: 0.3s; }
.stagger-children > *:nth-child(5) { transition-delay: 0.4s; }

/* ── Page Top Spacer (for fixed navbar) ────────────── */
.page-top-spacer {
  height: var(--navbar-height);
}

/* ── Utility Classes ───────────────────────────────── */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-light); }
.font-bold { font-weight: 700; }
.font-extra { font-weight: 800; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ── Responsive Breakpoints ────────────────────────── */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.375rem;
    --container-padding: 1rem;
    --space-4xl: 4rem;
  }

  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    flex-direction: column;
    background: var(--color-primary);
    padding: calc(var(--navbar-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
    gap: var(--space-md);
    transition: right var(--transition-slow);
    box-shadow: -10px 0 40px rgba(0,0,0,0.3);
    z-index: 999;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: var(--font-size-lg);
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    width: 100%;
  }

  .nav-links a::after {
    display: none;
  }

  .nav-cta {
    margin-top: var(--space-md);
    text-align: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    width: 100%;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

/* Mobile overlay when menu is open */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Small Mobile */
@media (max-width: 480px) {
  :root {
    --font-size-5xl: 1.75rem;
    --font-size-4xl: 1.5rem;
  }

  .btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-sm);
  }

  .card {
    padding: var(--space-lg);
  }
}