/* ===================================
   RESET & ROOT VARIABLES
=================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Dark theme (default) ── */
:root {
  --primary: #6c63ff;
  --primary-dark: #5548e0;
  --primary-light: #a89dff;
  --accent: #00d4aa;
  --dark: #0d0d1a;
  --dark-2: #13132a;
  --dark-3: #1a1a35;
  --card-bg: #16163a;
  --text: #e8e8f0;
  --text-muted: #9090b0;
  --border: rgba(108, 99, 255, 0.2);
  --shadow: 0 8px 40px rgba(108, 99, 255, 0.15);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

/* ── Light theme ── */
[data-theme="light"] {
  --primary: #5b52e8;
  --primary-dark: #4740cc;
  --primary-light: #6c63ff;
  --accent: #00b894;
  --dark: #f0f0fa;
  --dark-2: #e8e8f5;
  --dark-3: #ffffff;
  --card-bg: #ffffff;
  --text: #1a1a2e;
  --text-muted: #5a5a7a;
  --border: rgba(91, 82, 232, 0.18);
  --shadow: 0 8px 40px rgba(91, 82, 232, 0.12);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }

/* ===================================
   UTILITY
=================================== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.highlight { color: var(--primary); }

.section { padding: 100px 0; }

.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block;
  background: rgba(108, 99, 255, 0.15);
  color: var(--primary-light);
  border: 1px solid var(--border);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-header h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; line-height: 1.2; }
.section-subtitle { color: var(--text-muted); margin-top: 12px; font-size: 17px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(108, 99, 255, 0.5);
}
.btn-outline {
  background: transparent;
  color: var(--primary-light);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: rgba(108, 99, 255, 0.15);
  transform: translateY(-2px);
}
.btn-full { width: 100%; justify-content: center; }

/* ===================================
   NAVBAR
=================================== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 18px 0;
  transition: all var(--transition);
}
.navbar.scrolled {
  background: var(--nav-scrolled-bg, rgba(13, 13, 26, 0.95));
  backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 2px 30px rgba(0,0,0,0.12);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .navbar.scrolled {
  --nav-scrolled-bg: rgba(240, 240, 250, 0.96);
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 24px; font-weight: 800; color: var(--text);
}
.nav-logo span { color: var(--primary); }

.nav-links {
  display: flex; align-items: center; gap: 8px;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 14px; font-weight: 500;
  padding: 8px 16px; border-radius: 50px;
  transition: all var(--transition);
}
.nav-links a:hover { color: var(--primary); background: rgba(108, 99, 255, 0.1); }

.nav-right { display: flex; align-items: center; gap: 10px; }

/* Theme Toggle Button */
.theme-toggle {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: rotate(20deg);
}

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

/* ===================================
   HERO
=================================== */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding: 100px 24px 60px;
  max-width: 1200px; margin: 0 auto;
}
.hero-bg {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 800px 600px at 80% 20%, rgba(108,99,255,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 600px 400px at 20% 80%, rgba(0,212,170,0.08) 0%, transparent 70%),
    var(--dark);
}
.hero-content { flex: 1; max-width: 600px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0, 212, 170, 0.1);
  border: 1px solid rgba(0, 212, 170, 0.3);
  color: var(--accent);
  padding: 6px 18px; border-radius: 50px;
  font-size: 13px; font-weight: 600; margin-bottom: 24px;
}
.hero-badge::before {
  content: ''; width: 8px; height: 8px;
  background: var(--accent); border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-content h1 {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800; line-height: 1.15;
  margin-bottom: 16px;
}
.typewriter-wrap {
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 600; color: var(--primary-light);
  margin-bottom: 24px; min-height: 40px;
}
.cursor { animation: blink 1s infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-desc {
  font-size: 17px; color: var(--text-muted);
  margin-bottom: 36px; line-height: 1.8;
}
.hero-desc strong { color: var(--text); }

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 36px; }

.hero-socials {
  display: flex; gap: 14px;
}
.hero-socials a {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 16px;
  transition: all var(--transition);
}
.hero-socials a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-3px);
}

/* Hero Visual */
.hero-visual {
  flex: 1; display: flex; justify-content: center; align-items: center;
  position: relative; min-height: 400px;
}
.avatar-ring {
  width: 240px; height: 240px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  padding: 4px;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}
.avatar {
  width: 100%; height: 100%; border-radius: 50%;
  background: var(--dark-3);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.avatar img {
  width: 100%; height: 100%; object-fit: cover; border-radius: 50%;
}
.avatar span {
  font-size: 72px; font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.floating-badge {
  position: absolute;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 13px; font-weight: 600;
  display: flex; align-items: center; gap: 8px;
  box-shadow: var(--shadow);
  white-space: nowrap;
}
.floating-badge i { color: var(--primary-light); font-size: 15px; }
.badge-1 { top: 10%; left: 0; animation: float 5s ease-in-out infinite; }
.badge-2 { top: 10%; right: 0; animation: float 5s ease-in-out infinite 1s; }
.badge-3 { bottom: 20%; left: 0; animation: float 5s ease-in-out infinite 2s; }
.badge-4 { bottom: 20%; right: 0; animation: float 5s ease-in-out infinite 1.5s; }

.scroll-down {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  color: var(--text-muted); font-size: 20px;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-8px); }
}

/* ===================================
   ABOUT
=================================== */
.about { background: var(--dark-2); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start;
}
.about-text p { color: var(--text-muted); margin-bottom: 20px; font-size: 16px; }
.about-text strong { color: var(--text); }
.about-stats {
  display: flex; gap: 30px; margin: 36px 0;
  padding: 28px; background: var(--card-bg);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.stat { text-align: center; flex: 1; }
.stat h3 {
  font-size: 36px; font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat p { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

.about-info {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.about-info h3 { font-size: 20px; font-weight: 700; margin-bottom: 24px; }
.info-list { display: flex; flex-direction: column; gap: 16px; }
.info-list li {
  display: flex; align-items: flex-start; gap: 14px;
  font-size: 15px; color: var(--text-muted);
}
.info-list li i {
  color: var(--primary); font-size: 16px; margin-top: 2px; min-width: 18px;
}
.info-list li span strong { color: var(--text); }

/* Python Journey Card (in About) */
.python-journey-card {
  margin-top: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  position: relative; overflow: hidden;
  transition: all var(--transition);
}
.python-journey-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #3776ab, #ffd343);
}
.python-journey-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.pj-header { display: flex; align-items: center; gap: 16px; margin-bottom: 14px; }
.pj-icon {
  width: 46px; height: 46px; min-width: 46px;
  background: rgba(55, 118, 171, 0.15);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #4da6e8;
}
.pj-header h4 { font-size: 15px; font-weight: 700; margin-bottom: 3px; }
.pj-header p { font-size: 13px; color: var(--text-muted); }
.pj-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.pj-tags span {
  display: inline-flex; align-items: center; gap: 5px;
  background: rgba(55,118,171,0.1);
  color: #4da6e8;
  border: 1px solid rgba(55,118,171,0.2);
  padding: 4px 12px; border-radius: 50px;
  font-size: 12px; font-weight: 500;
}
.pj-tags span i { font-size: 11px; }
.pj-link {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--primary); font-size: 14px; font-weight: 600;
  transition: gap var(--transition);
}
.pj-link:hover { gap: 12px; }

/* ===================================
   SKILLS
=================================== */
.skills-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px;
}
.skill-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.skill-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.skill-icon {
  width: 52px; height: 52px;
  background: rgba(108, 99, 255, 0.15);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--primary);
  margin-bottom: 16px;
}
.skill-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 14px; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tags span {
  background: rgba(108, 99, 255, 0.1);
  color: var(--primary-light);
  border: 1px solid rgba(108, 99, 255, 0.25);
  padding: 4px 14px; border-radius: 50px;
  font-size: 13px; font-weight: 500;
}

/* ===================================
   EXPERIENCE
=================================== */
.experience { background: var(--dark-2); }
.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline::before {
  content: '';
  position: absolute; left: 20px; top: 0; bottom: 0;
  width: 2px; background: var(--border);
}
.timeline-item {
  position: relative; padding-left: 60px; margin-bottom: 36px;
}
.timeline-dot {
  position: absolute; left: 12px; top: 28px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--dark-2);
  box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.2);
}
.timeline-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  transition: all var(--transition);
}
.timeline-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.timeline-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 16px; margin-bottom: 16px; flex-wrap: wrap;
}
.timeline-header h3 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.company { color: var(--text-muted); font-size: 14px; display: flex; align-items: center; gap: 6px; }
.company i { color: var(--primary); }
.timeline-date {
  background: rgba(108, 99, 255, 0.12);
  color: var(--primary-light);
  border: 1px solid var(--border);
  padding: 4px 14px; border-radius: 50px;
  font-size: 13px; font-weight: 500; white-space: nowrap;
}
.timeline-card ul { display: flex; flex-direction: column; gap: 8px; }
.timeline-card ul li {
  color: var(--text-muted); font-size: 14px; padding-left: 16px; position: relative;
}
.timeline-card ul li::before {
  content: '▸'; position: absolute; left: 0; color: var(--primary);
}

/* ===================================
   PROJECTS
=================================== */
.projects-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 28px;
}
.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  display: flex; flex-direction: column;
}
.project-card:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}
.project-top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 18px;
}
.project-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(0,212,170,0.1));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--primary);
}
.project-links a {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted); font-size: 14px;
  transition: all var(--transition);
}
.project-links a:hover {
  background: var(--primary); border-color: var(--primary); color: #fff;
}
.internal-badge {
  background: rgba(0, 212, 170, 0.1);
  color: var(--accent);
  border: 1px solid rgba(0,212,170,0.3);
  padding: 4px 12px; border-radius: 50px;
  font-size: 12px; font-weight: 600;
}
.project-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.project-card p { color: var(--text-muted); font-size: 14px; line-height: 1.7; flex: 1; margin-bottom: 20px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.project-tags span {
  background: rgba(108, 99, 255, 0.1);
  color: var(--primary-light);
  border: 1px solid rgba(108, 99, 255, 0.2);
  padding: 4px 12px; border-radius: 50px;
  font-size: 12px; font-weight: 500;
}

/* ===================================
   EDUCATION
=================================== */
.education { background: var(--dark-2); }
.edu-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 28px;
  max-width: 900px; margin: 0 auto;
}
.edu-card {
  background: var(--card-bg);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px;
  display: flex; gap: 24px; align-items: flex-start;
  transition: all var(--transition);
}
.edu-card:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-4px); }
.edu-icon {
  width: 56px; height: 56px; min-width: 56px;
  background: rgba(108, 99, 255, 0.15); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; color: var(--primary);
}
.edu-info h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.edu-field { color: var(--primary-light); font-size: 14px; font-weight: 500; margin-bottom: 8px; }
.edu-college { color: var(--text-muted); font-size: 14px; display: flex; align-items: center; gap: 6px; margin-bottom: 10px; }
.edu-college i { color: var(--primary); }
.edu-year {
  display: inline-block;
  background: rgba(108, 99, 255, 0.12); color: var(--primary-light);
  border: 1px solid var(--border); padding: 3px 12px;
  border-radius: 50px; font-size: 12px; font-weight: 600;
}

/* ===================================
   CERTIFICATIONS
=================================== */
.certifications { background: var(--dark-2); }
.cert-grid {
  display: flex; justify-content: center;
}
.cert-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 40px;
  display: flex; gap: 28px; align-items: flex-start;
  max-width: 700px; width: 100%;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.cert-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.cert-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.cert-icon {
  width: 64px; height: 64px; min-width: 64px;
  background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(0,212,170,0.1));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 30px; color: var(--primary);
}
.cert-info h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.cert-issuer {
  color: var(--primary-light); font-size: 14px; font-weight: 500;
  display: flex; align-items: center; gap: 6px; margin-bottom: 14px;
}
.cert-issuer i { color: var(--accent); }
.cert-desc { color: var(--text-muted); font-size: 15px; line-height: 1.7; margin-bottom: 18px; }
.cert-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(0, 212, 170, 0.1);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 170, 0.3);
  padding: 6px 18px; border-radius: 50px;
  font-size: 13px; font-weight: 600;
}
.cert-badge i { font-size: 14px; }
.cert-verify-link {
  display: inline-flex; align-items: center; gap: 7px;
  color: var(--accent); font-size: 13px; font-weight: 500;
  text-decoration: none; margin-top: 10px;
  transition: opacity 0.2s;
}
.cert-verify-link:hover { opacity: 0.75; }

/* ===================================
   CONTACT
=================================== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 60px; max-width: 950px; margin: 0 auto;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-info-only { display: flex; flex-direction: column; gap: 24px; max-width: 500px; margin: 0 auto; }
.contact-item {
  display: flex; align-items: flex-start; gap: 18px;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  transition: all var(--transition);
}
.contact-item:hover { border-color: var(--primary); }
.contact-icon {
  width: 44px; height: 44px; min-width: 44px;
  background: rgba(108, 99, 255, 0.15); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: var(--primary);
}
.contact-item h4 { font-size: 13px; color: var(--text-muted); font-weight: 500; margin-bottom: 4px; }
.contact-item a, .contact-item span { color: var(--text); font-size: 15px; font-weight: 500; }
.contact-item a:hover { color: var(--primary); }

.contact-form {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px;
  display: flex; flex-direction: column; gap: 18px;
}
.form-group input, .form-group textarea {
  width: 100%; background: var(--dark-3);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-family: inherit; font-size: 15px;
  padding: 14px 18px; transition: all var(--transition);
  resize: vertical;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}

/* ===================================
   FOOTER
=================================== */
.footer {
  background: var(--dark-2); border-top: 1px solid var(--border);
  padding: 50px 0 30px;
}
.footer-content {
  text-align: center; margin-bottom: 24px;
}
.footer-content .nav-logo { font-size: 28px; display: inline-block; margin-bottom: 10px; }
.footer-content p { color: var(--text-muted); font-size: 14px; margin-bottom: 20px; }
.footer-socials {
  display: flex; justify-content: center; gap: 14px;
}
.footer-socials a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: rgba(255,255,255,0.05);
  border: 1px solid var(--border); color: var(--text-muted);
  font-size: 15px; transition: all var(--transition);
}
.footer-socials a:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-3px); }
.footer-copy { text-align: center; color: var(--text-muted); font-size: 13px; }

/* ===================================
   RESPONSIVE
=================================== */
@media (max-width: 900px) {
  .hero { flex-direction: column; text-align: center; padding-top: 120px; gap: 60px; }
  .hero-content { max-width: 100%; }
  .hero-cta { justify-content: center; }
  .hero-socials { justify-content: center; }
  .hero-visual { min-height: 320px; width: 100%; }
  .floating-badge { font-size: 11px; padding: 6px 12px; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .edu-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 16px; }
  .timeline-item { padding-left: 48px; }
  .timeline-dot { left: 8px; }
}

@media (max-width: 640px) {
  .section { padding: 70px 0; }
  .about-stats { flex-direction: column; gap: 20px; }
  .projects-grid { grid-template-columns: 1fr; }
  .timeline-header { flex-direction: column; gap: 10px; }
  .timeline-card { padding: 20px; }
  .edu-card { flex-direction: column; gap: 16px; }
  .nav-links {
    display: none; flex-direction: column;
    position: fixed; top: 70px; left: 0; right: 0;
    background: var(--dark);
    backdrop-filter: blur(20px);
    padding: 20px; gap: 4px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
}

/* Fade-in animation */
.fade-in {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }