/* ============================================================
   PORTFOLIO - MUHAMMAD AFIF NAUFAL
   Multi-Page Refactored | Minimalist + Glassmorphism
   ============================================================ */

/* ── Google Fonts ────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,300&family=DM+Mono:wght@400;500&display=swap');

/* ── Design Tokens ───────────────────────────────────────── */
:root {
  --primary:        #1B262C;
  --secondary:      #0F4C75;
  --accent:         #3282B8;
  --accent-light:   #BBE1FA;
  --white:          #ffffff;
  --bg:             #f0f4f8;
  --bg-secondary:   #e4edf5;
  --text:           #1B262C;
  --text-muted:     #5a6a74;
  --border:         rgba(50, 130, 184, 0.18);
  --shadow-sm:      0 2px 12px rgba(15, 76, 117, 0.08);
  --shadow-md:      0 8px 32px rgba(15, 76, 117, 0.12);
  --shadow-lg:      0 20px 60px rgba(15, 76, 117, 0.18);

  /* Glassmorphism */
  --glass-bg:       rgba(255, 255, 255, 0.72);
  --glass-border:   rgba(255, 255, 255, 0.55);
  --glass-blur:     blur(18px);
  --glass-shadow:   0 8px 40px rgba(15, 76, 117, 0.14);

  /* Sidebar */
  --sidebar-width:  280px;
  --gradient:       linear-gradient(135deg, var(--secondary), var(--accent));
  --gradient-soft:  linear-gradient(160deg, #e8f4fb 0%, #f0f6fa 50%, #dceef8 100%);
}

[data-theme="dark"] {
  --bg:           #0d1b25;
  --bg-secondary: #132030;
  --text:         #e9f1f7;
  --text-muted:   #8aacbf;
  --border:       rgba(187, 225, 250, 0.12);
  --white:        #162230;
  --shadow-sm:    0 2px 12px rgba(0, 0, 0, 0.3);
  --shadow-md:    0 8px 32px rgba(0, 0, 0, 0.4);
  --glass-bg:     rgba(22, 40, 58, 0.80);
  --glass-border: rgba(187, 225, 250, 0.14);
  --gradient-soft: linear-gradient(160deg, #0e1f2d 0%, #13263a 50%, #0a1822 100%);
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image: var(--gradient-soft);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

/* Subtle decorative background orbs */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}
body::before {
  width: 500px; height: 500px;
  top: -120px; right: 5%;
  background: radial-gradient(circle, rgba(50,130,184,0.07) 0%, transparent 70%);
}
body::after {
  width: 380px; height: 380px;
  bottom: 5%; left: 20%;
  background: radial-gradient(circle, rgba(15,76,117,0.06) 0%, transparent 70%);
}

/* ── Layout Shell ────────────────────────────────────────── */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ═══════════════════════════════════════════════════════════
   SIDEBAR (aside)
   ═══════════════════════════════════════════════════════════ */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-width);
  z-index: 200;
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), background 0.3s;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* Profile block */
.sidebar-profile {
  padding: 2.4rem 1.6rem 1.6rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.profile-photo-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 1rem;
}
.profile-photo {
  width: 96px; height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  box-shadow: 0 0 0 6px rgba(50, 130, 184, 0.12);
  display: block;
  margin: 0 auto;
  background: var(--bg-secondary);
}
.profile-status {
  position: absolute;
  bottom: 4px; right: 4px;
  width: 14px; height: 14px;
  background: #22c55e;
  border: 2.5px solid var(--white);
  border-radius: 50%;
}

.profile-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.2px;
  margin-bottom: 0.2rem;
}
.profile-role {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.profile-location {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}
.profile-location i { color: var(--accent); font-size: 0.75rem; }

/* Download CV */
.btn-cv {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.2rem;
  background: var(--gradient);
  color: #fff;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.25s ease;
  box-shadow: 0 4px 14px rgba(15, 76, 117, 0.3);
  margin-bottom: 1.2rem;
  white-space: nowrap;
}
.btn-cv:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(15, 76, 117, 0.4);
}
.btn-cv i { font-size: 0.8rem; }

/* Social icons */
.social-icons {
  display: flex;
  gap: 0.55rem;
  justify-content: center;
  flex-wrap: wrap;
}
.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: all 0.22s ease;
}
.social-icon:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(50, 130, 184, 0.3);
}

/* Navigation */
.sidebar-nav {
  flex: 1;
  padding: 1.4rem 1.2rem;
}
.sidebar-nav nav ul { display: flex; flex-direction: column; gap: 0.3rem; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all 0.22s ease;
  position: relative;
  overflow: hidden;
}
.nav-link i {
  width: 18px;
  font-size: 0.85rem;
  text-align: center;
  flex-shrink: 0;
}
.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.22s ease;
  border-radius: 10px;
  z-index: -1;
}
.nav-link:hover,
.nav-link.active {
  color: #fff;
  box-shadow: 0 4px 14px rgba(15, 76, 117, 0.25);
}
.nav-link:hover::before,
.nav-link.active::before { opacity: 1; }

/* Sidebar footer (theme + lang) */
.sidebar-footer {
  padding: 1rem 1.2rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.sidebar-controls { display: flex; gap: 0.5rem; }
.ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  width: 38px; height: 38px;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.22s;
}
.ctrl-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.copyright-mini {
  font-size: 0.7rem;
  color: var(--text-muted);
  opacity: 0.7;
}

/* Mobile hamburger */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  z-index: 300;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  padding: 0 1.25rem;
  align-items: center;
  justify-content: space-between;
}
.mobile-logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}
.hamburger span {
  display: block;
  width: 20px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.28s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 190;
  backdrop-filter: blur(2px);
}
.overlay.active { display: block; }

/* ═══════════════════════════════════════════════════════════
   MAIN CONTENT
   ═══════════════════════════════════════════════════════════ */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  padding: 3rem 3.5rem;
  max-width: 100%;
}

/* Page header */
.page-header {
  margin-bottom: 2.8rem;
}
.page-header .breadcrumb {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.page-header h1 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: -0.5px;
}
.page-header h1 span { color: var(--accent); }
.page-header p {
  margin-top: 0.6rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 500px;
}
.title-line {
  width: 40px; height: 3px;
  background: var(--gradient);
  border-radius: 2px;
  margin-top: 0.9rem;
}

/* ── Glassmorphism Card ───────────────────────────────────── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.glass-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ═══════════════════════════════════════════════════════════
   HOME PAGE
   ═══════════════════════════════════════════════════════════ */
.hero-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: calc(100vh - 6rem);
  padding: 2rem 0;
}
.hero-greeting {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.hero-greeting::before {
  content: '';
  display: block;
  width: 28px; height: 2px;
  background: var(--accent);
  border-radius: 1px;
}
.hero-name {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  color: var(--text);
  margin-bottom: 0.6rem;
}
.hero-name span { color: var(--accent); }
.hero-typing {
  font-size: clamp(1rem, 2vw, 1.4rem);
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: 1.4rem;
  min-height: 2rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.typing-cursor {
  display: inline-block;
  width: 2px; height: 1.2em;
  background: var(--accent);
  border-radius: 1px;
  animation: blink 1s step-end infinite;
  vertical-align: middle;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 2rem;
}
.hero-stats {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.stat-chip {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 1.2rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  box-shadow: var(--shadow-sm);
}
.stat-chip .stat-num {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.stat-chip .stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.3;
}
.hero-tech {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.tech-badge {
  padding: 0.35rem 0.85rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s;
}
.tech-badge i { color: var(--accent); font-size: 0.85rem; }
.tech-badge:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.tech-badge:hover i { color: #fff; }
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  background: var(--gradient);
  color: #fff;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.25s;
  box-shadow: 0 4px 20px rgba(15, 76, 117, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(15, 76, 117, 0.45);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  background: var(--glass-bg);
  border: 1.5px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  backdrop-filter: var(--glass-blur);
  transition: all 0.25s;
}
.btn-secondary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

/* ═══════════════════════════════════════════════════════════
   ABOUT PAGE
   ═══════════════════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
.about-photo-card {
  padding: 2rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.about-photo {
  width: 140px; height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent);
  box-shadow: 0 0 0 8px rgba(50, 130, 184, 0.1);
  margin-bottom: 1.2rem;
}
.about-card-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.about-card-role {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}
.about-text-card { padding: 2rem; }
.about-text-card h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}
.about-text-card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

/* Skills grid */
.skills-section { margin-bottom: 3rem; }
.skills-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.4rem;
  color: var(--text);
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 0.8rem;
}
.skill-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 0.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  text-align: center;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.22s;
  backdrop-filter: var(--glass-blur);
}
.skill-chip i {
  font-size: 1.3rem;
  color: var(--accent);
}
.skill-chip:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(50, 130, 184, 0.3);
}
.skill-chip:hover i { color: #fff; }

/* ═══════════════════════════════════════════════════════════
   PROJECTS PAGE
   ═══════════════════════════════════════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.4rem;
}
.project-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.project-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--bg-secondary);
}
.project-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.project-card:hover .project-thumb img { transform: scale(1.05); }
.thumb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 76, 117, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s;
}
.project-card:hover .thumb-overlay { opacity: 1; }
.btn-preview {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 8px;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
  transition: background 0.2s;
}
.btn-preview:hover { background: rgba(255,255,255,0.35); }
.project-body {
  padding: 1.3rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.project-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
  line-height: 1.3;
}
.project-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  flex: 1;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}
.tech-tag {
  padding: 0.2rem 0.6rem;
  background: rgba(50, 130, 184, 0.1);
  border: 1px solid rgba(50, 130, 184, 0.2);
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
}
[data-theme="dark"] .tech-tag {
  background: rgba(187, 225, 250, 0.08);
  border-color: rgba(187, 225, 250, 0.15);
  color: var(--accent-light);
}
.project-links {
  display: flex;
  gap: 0.6rem;
  margin-top: auto;
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 7px;
  transition: all 0.2s;
}
.project-link.demo {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 3px 10px rgba(15, 76, 117, 0.3);
}
.project-link.demo:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(15, 76, 117, 0.4); }
.project-link.github {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.project-link.github:hover { background: var(--text); color: #fff; }

/* ═══════════════════════════════════════════════════════════
   CERTIFICATIONS PAGE
   ═══════════════════════════════════════════════════════════ */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.4rem;
}
.cert-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}
.cert-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.cert-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-secondary);
}
.cert-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.cert-card:hover .cert-thumb img { transform: scale(1.05); }
.cert-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 76, 117, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s;
}
.cert-card:hover .cert-overlay { opacity: 1; }
.cert-body {
  padding: 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.cert-badge-label {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 50px;
  margin-bottom: 0.6rem;
  background: rgba(50, 130, 184, 0.12);
  color: var(--accent);
  border: 1px solid rgba(50, 130, 184, 0.22);
  width: fit-content;
}
[data-theme="dark"] .cert-badge-label {
  background: rgba(187, 225, 250, 0.08);
  border-color: rgba(187, 225, 250, 0.15);
  color: var(--accent-light);
}
.cert-title {
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  color: var(--text);
  line-height: 1.3;
}
.cert-issuer {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.4rem;
}
.cert-year {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}
.cert-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ═══════════════════════════════════════════════════════════
   EXPERIENCE PAGE
   ═══════════════════════════════════════════════════════════ */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--secondary), transparent);
  border-radius: 1px;
}
.timeline-item {
  position: relative;
  margin-bottom: 2rem;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.55rem;
  top: 1.2rem;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--gradient);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 3px rgba(50, 130, 184, 0.2);
}
.timeline-card {
  padding: 1.6rem;
}
.exp-date {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}
.exp-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.2rem;
}
.exp-company {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.8rem;
}
.exp-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.7;
}
.accordion-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(50, 130, 184, 0.08);
  border: 1px solid rgba(50, 130, 184, 0.2);
  border-radius: 7px;
  transition: all 0.22s;
  margin-bottom: 0.8rem;
}
.accordion-toggle:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.accordion-toggle i { transition: transform 0.25s; font-size: 0.7rem; }
.accordion-toggle.open i { transform: rotate(90deg); }
.exp-skills { display: none; }
.exp-skills.open { display: block; }
.exp-skills h4 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}
.exp-skills ul {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-left: 1rem;
}
.exp-skills li {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  list-style: disc;
}

/* ═══════════════════════════════════════════════════════════
   CONTACT PAGE
   ═══════════════════════════════════════════════════════════ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 1.8rem;
  align-items: start;
}
.contact-info-card { padding: 2rem; }
.contact-info-card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.contact-info-card > p {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 1.8rem;
}
.contact-items { display: flex; flex-direction: column; gap: 1.1rem; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}
.ci-icon {
  flex-shrink: 0;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(50, 130, 184, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.9rem;
  border: 1px solid rgba(50, 130, 184, 0.2);
}
.ci-text h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}
.ci-text p, .ci-text a {
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 500;
  transition: color 0.2s;
}
.ci-text a:hover { color: var(--accent); }
.contact-social {
  display: flex;
  gap: 0.6rem;
  margin-top: 1.8rem;
}
.social-pill {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  transition: all 0.22s;
}
.social-pill:hover {
  background: var(--secondary);
  border-color: var(--secondary);
  color: #fff;
}

/* Contact Form */
.contact-form-card { padding: 2rem; }
.contact-form-card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}
.form-group { margin-bottom: 1.1rem; }
.form-group label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text);
  transition: border-color 0.22s, box-shadow 0.22s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(50, 130, 184, 0.15);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-note {
  font-size: 0.75rem;
  text-align: center;
  color: var(--text-muted);
  margin-top: 0.7rem;
  opacity: 0.75;
}

/* ═══════════════════════════════════════════════════════════
   MODAL
   ═══════════════════════════════════════════════════════════ */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}
.modal-backdrop.active { opacity: 1; visibility: visible; }
.modal-box {
  position: relative;
  max-width: min(90vw, 900px);
  max-height: 90vh;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
  transform: scale(0.93);
  transition: transform 0.3s;
}
.modal-backdrop.active .modal-box { transform: scale(1); }
.modal-box img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 90vh;
  object-fit: contain;
}
.modal-close {
  position: absolute;
  top: 0.75rem; right: 0.75rem;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: background 0.2s;
  z-index: 10;
}
.modal-close:hover { background: rgba(0,0,0,0.8); }

/* ── Scroll to top ────────────────────────────────────────── */
.scroll-top {
  position: fixed;
  bottom: 1.5rem; right: 1.5rem;
  width: 40px; height: 40px;
  background: var(--gradient);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(15, 76, 117, 0.35);
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s;
  z-index: 100;
  cursor: pointer;
}
.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { transform: translateY(-3px); }

/* ── Animations ───────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-up { animation: fadeInUp 0.6s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  :root { --sidebar-width: 260px; }
  .main-content { padding: 2.5rem 2.5rem; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .mobile-header { display: flex; }
  .main-content {
    margin-left: 0;
    padding: 1.5rem 1.25rem;
    padding-top: calc(56px + 1.5rem);
  }
  .main-content { padding-top: calc(56px + 1.5rem); }
  .projects-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 0.8rem; }
  .stat-chip { padding: 0.55rem 0.9rem; }
}

@media (max-width: 480px) {
  .hero-name { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
}