/* ============================================================
   CORAL REEF BIOLOGIST — Ocean Coral Deep Blue
   Complete Portfolio Design System
   ============================================================ */

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

/* ── CSS Custom Properties ── */
:root {
  --bg-primary: #031c30;
  --bg-secondary: #042540;
  --bg-card: #063352;
  --bg-card-hover: #084060;
  --text-primary: #d6eaf8;
  --text-secondary: #7fb3d8;
  --accent-1: #ff7f7f;
  --accent-2: #20c997;
  --accent-3: #66d9ef;
  --accent-4: #ffa94d;
  --border-color: #0a4d7a;
  --gradient-primary: linear-gradient(135deg, #ff7f7f, #20c997, #66d9ef);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 20px rgba(255, 127, 127, 0.15);
  --font-heading: 'Fraunces', serif;
  --font-body: 'Nunito Sans', sans-serif;
  --font-mono: 'Nunito Sans', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --accent-1: #ff7f7f;
  --accent-2: #20c997;
  --border-color: #e2e8f0;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-glow: 0 0 20px rgba(255, 127, 127, 0.1);
}

/* ── Reset & Base ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--accent-1);
  border-radius: 4px;
}

/* ── Navbar ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.navbar.scrolled {
  background: rgba(3, 28, 48, 0.9);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 0;
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem; font-weight: 700;
  color: var(--accent-1);
  letter-spacing: 1px;
}
.nav-logo span { color: var(--accent-2); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-size: 0.9rem; font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.theme-toggle {
  background: none; border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px; border-radius: var(--radius-sm);
  cursor: pointer; font-size: 1.1rem;
  transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.theme-toggle:hover { border-color: var(--accent-1); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ── Hero Section ── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}
.hero-canvas-wrap {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
.hero-canvas-wrap canvas { width: 100%; height: 100%; }
.hero .container { position: relative; z-index: 1; }
.hero-content { max-width: 720px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 40px;
  border: 1px solid var(--border-color);
  font-size: 0.85rem; color: var(--accent-1);
  margin-bottom: 24px;
  background: rgba(255, 127, 127, 0.05);
}
.hero-tag .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-1);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
}
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 600px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 600; font-size: 0.95rem;
  cursor: pointer; border: none;
  transition: var(--transition);
}
.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}
.btn-secondary:hover {
  border-color: var(--accent-1);
  color: var(--accent-1);
  transform: translateY(-2px);
}

/* ── Sections ── */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem; color: var(--accent-1);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700; margin-bottom: 12px;
}
.section-subtitle {
  font-size: 1.05rem; color: var(--text-secondary);
  max-width: 600px; margin: 0 auto;
}

/* ── Page Header ── */
.page-header {
  padding: 140px 0 60px;
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}
.page-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700; margin-bottom: 12px;
}
.page-header p { color: var(--text-secondary); font-size: 1.1rem; }

/* ── Skills Grid ── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}
.skill-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--accent-1);
}
.skill-icon {
  font-size: 2rem; margin-bottom: 16px;
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 127, 127, 0.1);
  border-radius: var(--radius);
}
.skill-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem; font-weight: 600;
  margin-bottom: 8px;
}
.skill-card p {
  color: var(--text-secondary);
  font-size: 0.9rem; margin-bottom: 16px;
  line-height: 1.6;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tags span {
  padding: 4px 12px;
  background: rgba(255, 127, 127, 0.1);
  color: var(--accent-1);
  border-radius: 20px;
  font-size: 0.78rem; font-weight: 500;
}

/* ── Projects Grid ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
  border-color: var(--accent-1);
}
.project-image {
  height: 200px;
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem;
}
.project-info { padding: 24px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.project-tags span {
  padding: 3px 10px;
  background: rgba(32, 201, 151, 0.1);
  color: var(--accent-2);
  border-radius: 20px;
  font-size: 0.75rem; font-weight: 500;
}
.project-info h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem; font-weight: 600;
  margin-bottom: 8px;
}
.project-info p {
  color: var(--text-secondary);
  font-size: 0.9rem; line-height: 1.6;
}

/* ── About Grid ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}
.image-frame {
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-color);
}
.about-image { position: relative; }
.floating-badge {
  position: absolute; bottom: -16px; right: -16px;
  background: var(--accent-1);
  color: #fff;
  padding: 16px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow-card);
}
.badge-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem; font-weight: 700;
}
.badge-label { font-size: 0.7rem; line-height: 1.3; opacity: 0.9; }
.about-text h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem; font-weight: 600;
  margin-bottom: 20px;
  line-height: 1.4;
}
.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}
.about-stats {
  display: flex; gap: 40px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}
.stat-item { text-align: center; }
.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem; font-weight: 700;
  color: var(--accent-1);
}
.stat-label { font-size: 0.8rem; color: var(--text-secondary); }

/* ── Timeline ── */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: ''; position: absolute; left: 7px; top: 0; bottom: 0;
  width: 2px; background: var(--border-color);
}
.timeline-item {
  position: relative; margin-bottom: 40px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  transition: var(--transition);
}
.timeline-item:hover {
  border-color: var(--accent-1);
  transform: translateX(4px);
}
.timeline-item::before {
  content: ''; position: absolute; left: -29px; top: 28px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent-1);
  border: 2px solid var(--bg-primary);
}
.timeline-item .date {
  font-family: var(--font-mono);
  font-size: 0.8rem; color: var(--accent-1);
  margin-bottom: 4px; display: block;
}
.timeline-item h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem; font-weight: 600;
  margin-bottom: 4px;
}
.timeline-item .company {
  font-size: 0.9rem; color: var(--accent-2);
  display: block; margin-bottom: 8px;
}
.timeline-item p {
  color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6;
}

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.contact-info h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem; font-weight: 600;
  margin-bottom: 16px;
}
.contact-info > p {
  color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 32px;
}
.contact-details { margin-bottom: 32px; }
.contact-item {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.95rem;
}
.contact-item .icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 127, 127, 0.1);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
}
.social-links { display: flex; gap: 12px; }
.social-links a {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 1.2rem;
  transition: var(--transition);
}
.social-links a:hover {
  border-color: var(--accent-1);
  background: rgba(255, 127, 127, 0.1);
  transform: translateY(-2px);
}

/* ── Contact Form ── */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block; font-weight: 500;
  font-size: 0.9rem; margin-bottom: 8px;
  color: var(--text-primary);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(255, 127, 127, 0.1);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.btn-submit { width: 100%; justify-content: center; }
.form-status {
  padding: 12px; border-radius: var(--radius-sm);
  margin-bottom: 16px; display: none;
  font-size: 0.9rem; text-align: center;
}
.form-status.success {
  display: block;
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.2);
}
.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ── Footer ── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ── Back to Top ── */
.back-to-top {
  position: fixed; bottom: 32px; right: 32px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--accent-1);
  color: #fff; border: none;
  font-size: 1.2rem; cursor: pointer;
  opacity: 0; visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  display: flex; align-items: center; justify-content: center;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-3px); }

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 0; right: -100%;
    width: 280px; height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 80px 32px;
    gap: 24px;
    border-left: 1px solid var(--border-color);
    transition: right 0.3s ease;
    z-index: 1001;
  }
  .nav-links.open { right: 0; }
  .nav-toggle { display: flex; z-index: 1002; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-stats { gap: 24px; }
  .projects-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .hero-buttons { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}