/* ========================================
   THEME VARIABLES
   ======================================== */

/* TERMINAL (Default) */
[data-theme="terminal"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --text-primary: #00ff41;
  --text-secondary: #00cc33;
  --text-muted: #33aa55;
  --accent: #00ff41;
  --accent-secondary: #ffb000;
  --border: #1e3a1e;
  --font-primary: 'JetBrains Mono', 'Courier New', monospace;
  --font-secondary: 'Space Grotesk', 'Helvetica Neue', sans-serif;
  --card-shadow: 0 0 15px rgba(0, 255, 65, 0.1);
  --glow: 0 0 10px rgba(0, 255, 65, 0.3);
  --nav-bg: rgba(10, 10, 10, 0.95);
  --btn-hover: rgba(0, 255, 65, 0.15);
}

/* BARBIE */
[data-theme="barbie"] {
  --bg-primary: #fff0f5;
  --bg-secondary: #ffe4ec;
  --bg-card: #ffffff;
  --text-primary: #1a1a2e;
  --text-secondary: #e91e8c;
  --text-muted: #b8568a;
  --accent: #ff69b4;
  --accent-secondary: #da1884;
  --border: #ffb6d9;
  --font-primary: 'Quicksand', 'Georgia', sans-serif;
  --font-secondary: 'Pacifico', cursive;
  --card-shadow: 0 4px 20px rgba(255, 105, 180, 0.15);
  --glow: none;
  --nav-bg: rgba(255, 240, 245, 0.95);
  --btn-hover: rgba(255, 105, 180, 0.15);
}

/* MTV 1980s */
[data-theme="mtv"] {
  --bg-primary: #0d0221;
  --bg-secondary: #150734;
  --bg-card: #1a0a3e;
  --text-primary: #ffffff;
  --text-secondary: #ff6ec7;
  --text-muted: #b39ddb;
  --accent: #00fff7;
  --accent-secondary: #ff6ec7;
  --border: #6a1b9a;
  --font-primary: 'Righteous', 'Impact', sans-serif;
  --font-secondary: 'Press Start 2P', monospace;
  --card-shadow: 0 0 20px rgba(0, 255, 247, 0.2), 0 0 40px rgba(255, 110, 199, 0.1);
  --glow: 0 0 15px rgba(0, 255, 247, 0.4);
  --nav-bg: rgba(13, 2, 33, 0.95);
  --btn-hover: rgba(0, 255, 247, 0.15);
}

/* ========================================
   RESET & BASE
   ======================================== */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-primary);
  line-height: 1.7;
  transition: background-color 0.4s ease, color 0.4s ease;
  min-height: 100vh;
}

/* ========================================
   TERMINAL SCANLINES
   ======================================== */

[data-theme="terminal"] body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
  z-index: 9999;
}

/* ========================================
   MTV GRID BACKGROUND
   ======================================== */

[data-theme="mtv"] body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background:
    linear-gradient(rgba(106, 27, 154, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(106, 27, 154, 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 0;
}

/* ========================================
   LAYOUT
   ======================================== */

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 4rem 0;
  position: relative;
  z-index: 1;
}

/* ========================================
   NAV / THEME SWITCHER
   ======================================== */

.theme-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  transition: background 0.4s ease, border-color 0.4s ease;
}

.theme-switcher {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.theme-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.4rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-primary);
  font-size: 0.8rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.theme-btn:hover {
  background: var(--btn-hover);
  color: var(--text-primary);
  border-color: var(--accent);
}

.theme-btn.active {
  background: var(--btn-hover);
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--glow);
}

.theme-icon {
  font-size: 0.9rem;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4 {
  font-family: var(--font-primary);
  line-height: 1.2;
}

h2 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

[data-theme="barbie"] h2 {
  font-family: var(--font-secondary);
  font-weight: 400;
}

[data-theme="mtv"] h2 {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--accent-secondary);
}

p {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

[data-theme="terminal"] p {
  color: var(--text-secondary);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-secondary);
}

/* ========================================
   HERO
   ======================================== */

.hero {
  padding-top: 6rem;
  padding-bottom: 3rem;
  text-align: center;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

[data-theme="terminal"] .hero-title {
  text-shadow: var(--glow);
}

[data-theme="barbie"] .hero-title {
  font-family: var(--font-secondary);
  font-weight: 400;
  font-size: 3.5rem;
  color: var(--accent-secondary);
}

[data-theme="mtv"] .hero-title {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, #00fff7, #ff6ec7, #ffe600);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 3.5rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

[data-theme="terminal"] .hero-subtitle::before {
  content: '> ';
}

[data-theme="barbie"] .hero-subtitle {
  text-transform: none;
  font-family: var(--font-primary);
  color: var(--accent);
}

[data-theme="mtv"] .hero-subtitle {
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
}

.hero-tagline {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
  color: var(--text-secondary);
}

[data-theme="terminal"] .hero-tagline {
  color: var(--text-muted);
}

/* ========================================
   ABOUT
   ======================================== */

.about {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* ========================================
   SERVICES GRID
   ======================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

[data-theme="terminal"] .service-card {
  border-left: 3px solid var(--accent);
}

[data-theme="barbie"] .service-card {
  border-radius: 16px;
  border: 2px solid var(--border);
}

[data-theme="mtv"] .service-card {
  border: 2px solid var(--border);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

/* ========================================
   CASE STUDIES
   ======================================== */

.cases {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.case-study {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.case-study:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.case-results {
  display: flex;
  gap: 2rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}

.result-item {
  display: flex;
  flex-direction: column;
}

.result-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

[data-theme="terminal"] .result-number {
  text-shadow: var(--glow);
}

[data-theme="mtv"] .result-number {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin-top: 1rem;
  font-style: italic;
  color: var(--text-muted);
}

[data-theme="barbie"] blockquote {
  border-left-color: var(--accent);
  border-radius: 0 12px 12px 0;
  background: rgba(255, 105, 180, 0.05);
  padding: 1rem;
}

cite {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  font-style: normal;
  color: var(--accent-secondary);
}

/* ========================================
   TECH GRID
   ======================================== */

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.tech-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  transition: border-color 0.3s ease;
}

.tech-group:hover {
  border-color: var(--accent);
}

.tech-group h4 {
  color: var(--accent);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}

.tech-group p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

[data-theme="barbie"] .tech-group {
  border-radius: 12px;
}

[data-theme="mtv"] .tech-group {
  border: 2px solid var(--border);
}

/* ========================================
   HERO WHO LINE
   ======================================== */

.hero-who {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
}

/* ========================================
   SERVICES INTRO
   ======================================== */

.services-intro {
  margin-bottom: 1.5rem;
  font-size: 1rem;
  color: var(--text-muted);
}

/* ========================================
   CASE DATES
   ======================================== */

.case-date {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ========================================
   CREDENTIALS
   ======================================== */

.credentials {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cred-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.cred-group h4 {
  color: var(--accent);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.cred-group ul {
  list-style: none;
  padding: 0;
}

.cred-group li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 0.2rem 0;
  border-bottom: 1px solid var(--border);
}

.cred-group li:last-child {
  border-bottom: none;
}

[data-theme="terminal"] .cred-group li::before {
  content: '> ';
  color: var(--accent);
}

[data-theme="barbie"] .cred-group li::before {
  content: '\2665 ';
  color: var(--accent);
}

[data-theme="mtv"] .cred-group li::before {
  content: '\2605 ';
  color: var(--accent);
}

/* ========================================
   SHARE VIBE BUTTON & TOAST
   ======================================== */

.share-vibe-btn {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.4rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-primary);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 0.5rem;
  transition: all 0.3s ease;
}

.share-vibe-btn:hover {
  background: var(--accent);
  color: var(--bg-primary);
}

.share-icon {
  font-size: 1rem;
}

.share-toast {
  position: fixed;
  top: 3.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--bg-primary);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-family: var(--font-primary);
  font-size: 0.8rem;
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1001;
  white-space: nowrap;
}

.share-toast.visible {
  opacity: 1;
}

/* ========================================
   CONTACT
   ======================================== */

.contact {
  text-align: center;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.contact-link {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  color: var(--accent);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.contact-link:hover {
  background: var(--accent);
  color: var(--bg-primary);
}

[data-theme="barbie"] .contact-link {
  border-radius: 50px;
  border-width: 2px;
}

[data-theme="mtv"] .contact-link {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-secondary);
  font-size: 0.6rem;
  padding: 0.8rem 1.5rem;
}

/* ========================================
   FOOTER
   ======================================== */

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }

  [data-theme="barbie"] .hero-title {
    font-size: 2.5rem;
  }

  [data-theme="mtv"] .hero-title {
    font-size: 2.5rem;
  }

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

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

  .case-results {
    gap: 1.5rem;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  .theme-label, .share-label {
    display: none;
  }

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

@media (max-width: 480px) {
  .tech-grid {
    grid-template-columns: 1fr;
  }

  h2 {
    font-size: 1.5rem;
  }
}

/* ========================================
   TRANSITIONS
   ======================================== */

* {
  transition-property: background-color, color, border-color, box-shadow;
  transition-duration: 0.3s;
  transition-timing-function: ease;
}

/* Override for elements that need different transitions */
.service-card, .tech-group, .contact-link, .theme-btn {
  transition: all 0.3s ease;
}

/* ========================================
   THEME FLASH TRANSITION
   ======================================== */

.theme-flash {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.theme-flash.active {
  opacity: 1;
}

[data-theme="terminal"] .theme-flash { background: #00ff41; }
[data-theme="barbie"] .theme-flash { background: #ff69b4; }
[data-theme="mtv"] .theme-flash { background: #00fff7; }