/* ═══════════════════════════════════════════════════════════════
   CALVIN GACHERU MWANGI — Portfolio Stylesheet
   Fonts: Playfair Display (display/headings) + DM Sans (body)
   ═══════════════════════════════════════════════════════════════ */

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

/* ── CSS Variables ── */
:root {
  --bg:          #13151C;
  --bg-2:        #171A24;
  --bg-card:     #1C2030;
  --bg-card-h:   #222640;
  --border:      rgba(255,255,255,0.06);
  --border-h:    rgba(196,168,79,0.32);
  --text:        #EDE8D8;
  --text-muted:  #8A8A80;
  --accent:      #C4A84F;
  --accent-2:    #E2CC7A;
  --accent-glow: rgba(196,168,79,0.12);
  --green:       #22c55e;
  --amber:       #f59e0b;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', sans-serif;

  --nav-h:       68px;
  --radius:      12px;
  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-w:       1200px;
  --nav-bg:      rgba(19,21,28,0.82);
  --nav-bg-2:    rgba(19,21,28,0.97);
  --mobile-nav-bg: rgba(19,21,28,0.98);
  --selection-text: #fff;
}

[data-theme='light'] {
  --bg:          #F8F6F0;
  --bg-2:        #F0ECE2;
  --bg-card:     #FFFFFF;
  --bg-card-h:   #F7F4EC;
  --border:      rgba(17,24,39,0.1);
  --border-h:    rgba(139,105,20,0.35);
  --text:        #1A1614;
  --text-muted:  #5A5650;
  --accent:      #8B6914;
  --accent-2:    #B8972E;
  --accent-glow: rgba(139,105,20,0.1);
  --green:       #16a34a;
  --amber:       #d97706;
  --nav-bg:      rgba(248,246,240,0.82);
  --nav-bg-2:    rgba(248,246,240,0.97);
  --mobile-nav-bg: rgba(248,246,240,0.98);
  --selection-text: #ffffff;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; opacity: 0.6; }

/* ── Selection ── */
::selection { background: rgba(196,168,79,0.22); color: var(--selection-text); }

/* ─────────────────────────────────────────────
   UTILITY
───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}
.section { position: relative; padding: 110px 0; }
#home { padding: 0; }

.section-tag {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}
.section-heading::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--accent);
  margin-top: 0.6rem;
  border-radius: 1px;
  opacity: 0.8;
}

/* ─────────────────────────────────────────────
   NAVBAR
───────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: var(--nav-bg-2);
  box-shadow: 0 4px 24px rgba(0,0,0,0.35);
}
.nav-inner {
  max-width: var(--max-w);
  height: 100%;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  font-style: italic;
  color: var(--text);
  letter-spacing: 0.01em;
}

/* Logo brackets hidden — not appropriate for an executive portfolio */
.logo-bracket { display: none; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.theme-toggle {
  position: relative;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  background: var(--bg-card);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), background var(--transition), color var(--transition), transform var(--transition);
}

.theme-toggle:hover {
  border-color: var(--border-h);
  color: var(--accent);
  transform: translateY(-1px);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-icon {
  position: absolute;
  font-size: 0.88rem;
  transition: opacity var(--transition), transform var(--transition);
}

.theme-icon-moon { opacity: 1; transform: scale(1) rotate(0deg); }
.theme-icon-sun  { opacity: 0; transform: scale(0.7) rotate(-30deg); }

[data-theme='light'] .theme-icon-moon { opacity: 0; transform: scale(0.7) rotate(30deg); }
[data-theme='light'] .theme-icon-sun  { opacity: 1; transform: scale(1) rotate(0deg); }

.nav-links { display: flex; gap: 0.25rem; align-items: center; }
.nav-link {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  position: relative;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%; height: 1.5px;
  background: var(--accent);
  border-radius: 1px;
  transition: transform var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-link.active::after, .nav-link:hover::after { transform: translateX(-50%) scaleX(1); }

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

/* ─────────────────────────────────────────────
   HOME
───────────────────────────────────────────── */
#home {
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Hero background — subtle, no neon grid or glows */
.hero-bg { position: absolute; inset: 0; z-index: 0; }

/* Hero grid and glow elements removed */
.hero-grid { display: none; }
.hero-glow  { display: none; }
.glow-1     { display: none; }
.glow-2     { display: none; }

/* Soft vignette background instead */
.hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 90% 80% at 50% 40%, rgba(196,168,79,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative; z-index: 1;
  text-align: center;
  padding: var(--nav-h) 2rem 2rem;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 1.5rem;
  opacity: 0; animation: fadeUp 0.8s 0.2s forwards;
}
.dot {
  width: 7px; height: 7px;
  background: var(--green); border-radius: 50%;
  animation: pulse 2.5s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

.hero-name {
  display: flex; flex-direction: column;
  line-height: 1.08;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}
/* No cursor — removed entirely */
.line { opacity: 0; animation: fadeUp 0.7s forwards; }
.line:nth-child(1) { animation-delay: 0.4s; }
.line:nth-child(2) { animation-delay: 0.55s; }
.line:nth-child(3) { animation-delay: 0.7s; }
.accent-line {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-style: italic;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 2.5vw, 1.2rem);
  font-weight: 300; letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-top: 1rem;
  opacity: 0; animation: fadeUp 0.7s 0.85s forwards;
}
.sep { color: var(--accent); margin: 0 0.4em; }

.hero-cta {
  margin-top: 2.5rem; display: flex; gap: 1rem; justify-content: center;
  opacity: 0; animation: fadeUp 0.7s 1s forwards;
}
.btn {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  padding: 0.85rem 2rem; border-radius: 6px;
  transition: var(--transition);
}
.btn-outline {
  border: 1.5px solid var(--accent);
  color: var(--accent);
  background: transparent;
}
.btn-outline:hover {
  background: var(--accent);
  color: #13151C;
  box-shadow: 0 6px 20px rgba(196,168,79,0.2);
}

.hero-socials {
  position: absolute; bottom: 3rem; left: 2.5rem; z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 1rem;
  opacity: 0; animation: fadeUp 0.8s 1.2s forwards;
}
.hero-socials a {
  color: var(--text-muted); font-size: 1.05rem;
  transition: color var(--transition), transform var(--transition);
}
.hero-socials a:hover { color: var(--accent); transform: translateY(-2px); }
.social-line {
  width: 1px; height: 60px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  margin-top: 0.25rem;
  opacity: 0.5;
}
.scroll-down {
  position: absolute; bottom: 2rem; left: 50%;
  transform: translateX(-50%); z-index: 2;
  color: var(--text-muted); font-size: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s 1.4s forwards, bounce 2s 2.2s infinite;
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(6px); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─────────────────────────────────────────────
   ABOUT
───────────────────────────────────────────── */
#about { background: var(--bg-2); }

.about-grid {
  display: grid; grid-template-columns: 1fr 380px;
  gap: 5rem; align-items: center;
}
.about-body {
  font-size: 1.05rem;
  color: var(--text);
  opacity: 0.85;
  margin-bottom: 1.75rem; max-width: 560px;
}
.about-body strong { color: var(--accent); font-weight: 600; }

.about-meta { display: flex; flex-direction: column; gap: 0.65rem; margin-bottom: 1.75rem; }
.meta-item {
  display: flex; align-items: center; gap: 0.75rem;
  font-size: 0.9rem; color: var(--text-muted);
}
.meta-item i { color: var(--accent); width: 16px; }
.meta-item a:hover { color: var(--accent); text-decoration: underline; }

.about-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(196,168,79,0.25);
  border-radius: 20px;
  color: var(--accent);
  background: rgba(196,168,79,0.06);
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
}
.chip:hover {
  background: rgba(196,168,79,0.12);
  border-color: rgba(196,168,79,0.45);
  transform: translateY(-2px);
}

.about-image-wrap { display: flex; justify-content: center; }
.about-image-frame { position: relative; width: 300px; height: 360px; }
.portrait-placeholder {
  width: 100%; height: 100%; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 7rem; color: rgba(196,168,79,0.2);
}
.frame-accent {
  position: absolute; width: 56px; height: 56px;
  border-color: var(--accent); border-style: solid; border-radius: 2px;
  opacity: 0.55;
}
.frame-accent.top-left    { top: -15px; left: -15px;   border-width: 2px 0 0 2px; }
.frame-accent.bottom-right { bottom: -15px; right: -15px; border-width: 0 2px 2px 0; }

/* ─────────────────────────────────────────────
   RESUME
───────────────────────────────────────────── */
#resume { background: var(--bg); }

.resume-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.resume-col  { display: flex; flex-direction: column; gap: 1.5rem; }

.resume-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.resume-card:hover {
  border-color: rgba(196,168,79,0.18);
  box-shadow: 0 8px 32px rgba(0,0,0,0.22);
}
.card-title {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 1.25rem; display: flex; align-items: center; gap: 0.6rem;
}

/* Skill bars */
.skills-list { display: flex; flex-direction: column; gap: 1rem; }
.skill-label {
  display: flex; justify-content: space-between;
  font-size: 0.88rem; margin-bottom: 0.4rem; color: var(--text-muted);
}
.pct-label { font-size: 0.75rem; color: var(--accent); font-weight: 500; }
.skill-track {
  width: 100%; height: 4px;
  background: rgba(255,255,255,0.05); border-radius: 4px; overflow: hidden;
}
.skill-bar {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 4px;
  transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Tag pill grid */
.tag-grid { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.tag-pill {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-muted); background: rgba(255,255,255,0.03);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.tag-pill:hover {
  border-color: rgba(196,168,79,0.3);
  background: rgba(196,168,79,0.06);
  color: var(--text);
}

/* Tag lists */
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-list li {
  font-size: 0.82rem; padding: 0.3rem 0.8rem;
  background: rgba(255,255,255,0.03); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text-muted);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.tag-list li:hover {
  border-color: rgba(196,168,79,0.3);
  background: rgba(196,168,79,0.06);
  color: var(--text);
}

/* Timeline */
.timeline { position: relative; padding-left: 1.25rem; }
.timeline::before {
  content: ''; position: absolute;
  left: 0; top: 6px; bottom: 0; width: 1px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  opacity: 0.5;
}
.tl-item { position: relative; padding-left: 1.25rem; padding-bottom: 1.75rem; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute; left: -1.42rem; top: 5px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-card);
}
.tl-header { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.25rem; flex-wrap: wrap; }
.tl-date {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em; color: var(--accent);
}
.tl-badge {
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.12rem 0.55rem; border-radius: 5px;
}
.tl-badge.live   { color: var(--green); border: 1px solid rgba(34,197,94,0.28); background: rgba(34,197,94,0.07); }
.tl-badge.intern { color: var(--amber); border: 1px solid rgba(245,158,11,0.28); background: rgba(245,158,11,0.07); }
.tl-title { font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 0.35rem; }
.tl-desc  { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 0.6rem; }
.tl-link {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent); transition: opacity var(--transition);
}
.tl-link:hover { opacity: 0.7; text-decoration: underline; }
.tl-links-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Education */
.edu-uni    { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 0.25rem; }
.edu-degree { font-size: 0.88rem; color: var(--accent); margin-bottom: 0.5rem; }
.edu-meta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; }
.edu-status {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  color: var(--amber); border: 1px solid rgba(245,158,11,0.28);
  background: rgba(245,158,11,0.07); padding: 0.2rem 0.6rem; border-radius: 5px;
}
.status-dot { width: 5px; height: 5px; background: var(--amber); border-radius: 50%; display: inline-block; }
.edu-year   { font-size: 0.78rem; color: var(--text-muted); }

/* Hobbies */
.hobbies-list { display: flex; flex-direction: column; gap: 0.75rem; }
.hobby-item {
  display: flex; align-items: center; gap: 0.85rem;
  font-size: 0.88rem; color: var(--text-muted);
  transition: color var(--transition);
}
.hobby-item:hover { color: var(--text); }
.hobby-item i { color: var(--accent); width: 16px; font-size: 0.95rem; }

/* ─────────────────────────────────────────────
   PORTFOLIO
───────────────────────────────────────────── */
#portfolio { background: var(--bg-2); }

.portfolio-sub { font-size: 0.95rem; color: var(--text-muted); margin-top: -1.5rem; margin-bottom: 2.5rem; }

.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem; }

.pcard {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem;
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.pcard:hover {
  transform: translateY(-4px);
  border-color: rgba(196,168,79,0.2);
  box-shadow: 0 16px 40px rgba(0,0,0,0.28);
}
.pcard.featured { border-color: rgba(196,168,79,0.15); }

.pcard-header { display: flex; justify-content: space-between; align-items: flex-start; }
.pcard-header-right { display: flex; align-items: center; gap: 0.6rem; }
.pcard-icon { font-size: 1.5rem; color: var(--accent); }
.pcard-links { display: flex; gap: 0.55rem; }
.pcard-links a {
  color: var(--text-muted); font-size: 1rem;
  transition: color var(--transition);
}
.pcard-links a:hover { color: var(--accent); }

.live-badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--green); border: 1px solid rgba(34,197,94,0.28);
  background: rgba(34,197,94,0.07); padding: 0.15rem 0.55rem; border-radius: 5px;
}
.live-dot {
  width: 5px; height: 5px; background: var(--green); border-radius: 50%;
  animation: pulse 2.5s infinite;
}
.private-badge {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-muted); letter-spacing: 0.06em;
}

.pcard-title { font-size: 1rem; font-weight: 600; color: var(--text); }
.pcard-desc  { font-size: 0.85rem; color: var(--text-muted); line-height: 1.65; flex: 1; }
.pcard-tags  { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.pcard-tags span {
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--accent); background: rgba(196,168,79,0.07);
  border: 1px solid rgba(196,168,79,0.2); border-radius: 6px; padding: 0.2rem 0.65rem;
}
.pcard-extra-links {
  display: flex; flex-wrap: wrap; gap: 0.75rem;
  padding-top: 0.5rem; border-top: 1px solid var(--border);
}
.pcard-extra-links a {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  transition: opacity var(--transition);
}
.pcard-extra-links a:hover { opacity: 0.7; text-decoration: underline; }

/* ─────────────────────────────────────────────
  CERTIFICATIONS
───────────────────────────────────────────── */
#certifications { background: var(--bg); }

.cert-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: -1.5rem;
  margin-bottom: 2.5rem;
}

.cert-grid { perspective: 1600px; }

.cert-card {
  background: transparent;
  border: none;
  padding: 0;
  min-height: 390px;
  cursor: pointer;
  transform-style: preserve-3d;
  box-shadow: none;
}

.cert-card:hover {
  transform: none;
  border-color: transparent;
  box-shadow: none;
}

.cert-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: var(--radius);
}

.cert-card-inner {
  position: relative;
  width: 100%;
  min-height: 390px;
  transform-style: preserve-3d;
  transition: transform 0.75s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.cert-card.is-flipped .cert-card-inner {
  transform: rotateY(180deg);
}

.cert-face {
  position: absolute;
  inset: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.cert-card:hover .cert-face,
.cert-card:focus-visible .cert-face {
  border-color: rgba(196,168,79,0.2);
  box-shadow: 0 12px 36px rgba(0,0,0,0.25);
}

.cert-back {
  transform: rotateY(180deg);
}

.cert-back-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.cert-flip-hint {
  margin-top: auto;
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--border);
}

.cert-flip-hint i {
  color: var(--accent);
}

.cert-preview {
  margin-top: 0.25rem;
  border: 1px dashed rgba(196,168,79,0.22);
  border-radius: 8px;
  background: rgba(196,168,79,0.03);
  min-height: 190px;
  padding: 0.9rem;
  display: grid;
  place-items: center;
}

.cert-preview-pdf {
  display: block;
  padding: 0.5rem;
}

.cert-pdf {
  width: 100%;
  height: 260px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
}

.cert-image {
  width: 100%;
  max-height: 250px;
  object-fit: contain;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
}

.cert-fallback {
  display: none;
  text-align: center;
  color: var(--text-muted);
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.cert-fallback i {
  font-size: 1.2rem;
  color: var(--accent);
}

.cert-fallback p {
  font-size: 0.82rem;
  line-height: 1.5;
}

.cert-fallback-note {
  font-family: var(--font-body);
  font-size: 0.66rem !important;
  letter-spacing: 0.03em;
}

.cert-preview.is-missing .cert-image {
  display: none;
}

.cert-preview.is-missing .cert-fallback {
  display: flex;
}

.cert-fallback-static {
  display: flex;
  height: 100%;
}

.cert-actions {
  margin-top: auto;
  padding-top: 0.7rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.cert-link,
.cert-toggle {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: 6px;
  padding: 0.38rem 0.75rem;
  transition: var(--transition);
}

.cert-link {
  color: var(--accent);
  border: 1px solid rgba(196,168,79,0.22);
  background: rgba(196,168,79,0.06);
}

.cert-link:hover {
  background: rgba(196,168,79,0.14);
  border-color: rgba(196,168,79,0.4);
}

.cert-toggle {
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--bg);
}

.cert-toggle:hover {
  border-color: rgba(196,168,79,0.3);
  color: var(--accent);
}

/* ─────────────────────────────────────────────
   CONTACT
───────────────────────────────────────────── */
#contact { background: var(--bg-2); }

.contact-sub { font-size: 0.95rem; color: var(--text-muted); margin-top: -1.5rem; margin-bottom: 2.5rem; }

.contact-card {
  background: var(--bg-card); padding: 1.25rem 1.4rem;
  display: flex; align-items: center; gap: 1rem;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background var(--transition), box-shadow var(--transition);
}
.contact-card:hover {
  background: var(--bg-card-h);
  box-shadow: 0 4px 20px rgba(0,0,0,0.18), inset 0 0 0 1px rgba(196,168,79,0.2);
}
.contact-icon { font-size: 1.2rem; color: var(--accent); flex-shrink: 0; }
.contact-label {
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted);
  margin-bottom: 0.2rem;
}
.contact-val { font-size: 0.82rem; color: var(--text); }
.contact-card:hover .contact-val { color: var(--accent); }

/* ─────────────────────────────────────────────
   FOOTER
───────────────────────────────────────────── */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 2rem;
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  font-style: italic;
}
.footer-copy { font-size: 0.8rem; color: var(--text-muted); }
.footer-socials { display: flex; gap: 1rem; }
.footer-socials a {
  color: var(--text-muted); font-size: 1rem;
  transition: color var(--transition), transform var(--transition);
}
.footer-socials a:hover { color: var(--accent); transform: translateY(-2px); }

/* ─────────────────────────────────────────────
   REVEAL ANIMATIONS
───────────────────────────────────────────── */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ─────────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr 300px; gap: 3rem; }
  .resume-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .container { padding: 0 1.25rem; }

  /* Nav mobile */
  .hamburger { display: flex; }
  .nav-links {
    position: fixed; inset: var(--nav-h) 0 0 0;
    background: var(--mobile-nav-bg);
    flex-direction: column; justify-content: center;
    align-items: center; gap: 1.5rem;
    transform: translateX(100%); transition: transform var(--transition);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-link { font-size: 1rem; padding: 0.75rem 1.5rem; }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-image-wrap { order: -1; }
  .about-image-frame { width: 220px; height: 270px; margin: 0 auto; }
  .hero-socials { display: none; }
  .footer-inner { flex-direction: column; text-align: center; }
  .hero-name { font-size: clamp(2rem, 10vw, 4rem); }

  .cert-card,
  .cert-card-inner {
    min-height: 360px;
  }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; }
  .btn { width: 180px; text-align: center; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}