/* =====================================================
   BAKAR HERO — Core Stylesheet
   Technology • Education • Innovation
   ===================================================== */

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-accent: #06b6d4;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --radius: 14px;
  --font-heading: 'Poppins', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --transition: 0.25s ease;
}

[data-theme="dark"] {
  --color-bg: #0b1120;
  --color-bg-alt: #0f172a;
  --color-surface: #131c2e;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: #1e293b;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.25; }

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
  border: none; cursor: pointer; transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn-primary { background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); color: #fff; box-shadow: var(--shadow-md); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline { background: transparent; color: var(--color-text); border: 2px solid var(--color-border); }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }

/* ---------- Navbar ---------- */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-brand { font-family: var(--font-heading); font-weight: 800; font-size: 1.25rem; }
.nav-brand span { color: var(--color-primary); }
.nav-links { display: flex; gap: 28px; list-style: none; align-items: center; }
.nav-links a { font-weight: 500; color: var(--color-text-muted); transition: color var(--transition); font-size: 0.95rem; }
.nav-links a:hover, .nav-links a.active { color: var(--color-primary); }
.nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--color-text); }
.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--color-border);
  background: var(--color-surface); cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; transition: transform var(--transition);
}
.theme-toggle:hover { transform: rotate(20deg); }
.lang-toggle {
  height: 40px; padding: 0 14px; border-radius: 20px; border: 1px solid var(--color-border);
  background: var(--color-surface); cursor: pointer; font-weight: 700; font-size: 0.85rem;
  color: var(--color-text); letter-spacing: 0.5px;
}
.lang-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }

@media (max-width: 860px) {
  .nav-links { position: fixed; top: 72px; left: 0; right: 0; background: var(--color-bg); flex-direction: column; padding: 20px; border-bottom: 1px solid var(--color-border); transform: translateY(-150%); transition: transform var(--transition); }
  .nav-links.open { transform: translateY(0); }
  .nav-toggle { display: block; }
}

/* ---------- Hero ---------- */
.hero { padding: 100px 0 80px; text-align: center; background: radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--color-primary) 8%, transparent), transparent 60%); }
.hero-eyebrow { color: var(--color-primary); font-weight: 600; letter-spacing: 1px; text-transform: uppercase; font-size: 0.85rem; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); margin: 14px 0; }
.hero-tagline { color: var(--color-text-muted); font-size: 1.1rem; max-width: 640px; margin: 0 auto 28px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }
.hero-photo { width: 220px; height: 220px; border-radius: 50%; margin: 0 auto 24px; overflow: hidden; border: 4px solid var(--color-surface); box-shadow: var(--shadow-lg); background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); display: flex; align-items: center; justify-content: center; font-size: 4rem; color: #fff; font-family: var(--font-heading); font-weight: 800; }

/* ---------- Sections ---------- */
section { padding: 80px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-eyebrow { color: var(--color-primary); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; font-size: 0.8rem; }
.section-header h2 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); margin-top: 8px; }
.section-header p { color: var(--color-text-muted); margin-top: 12px; }

/* ---------- Grid & Cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); transition: transform var(--transition), box-shadow var(--transition); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.card-image { width: 100%; height: 180px; border-radius: 10px; object-fit: cover; margin-bottom: 16px; background: var(--color-bg-alt); }
.card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.card p { color: var(--color-text-muted); font-size: 0.92rem; }
.badge { display: inline-block; padding: 4px 12px; border-radius: 999px; background: color-mix(in srgb, var(--color-primary) 12%, transparent); color: var(--color-primary); font-size: 0.75rem; font-weight: 600; margin: 3px 4px 3px 0; }
.card-footer { display: flex; gap: 10px; margin-top: 16px; }

/* ---------- Stats ---------- */
.stats-row { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; margin-top: 48px; }
.stat-item { text-align: center; }
.stat-number { font-size: 2.4rem; font-weight: 800; color: var(--color-primary); font-family: var(--font-heading); }
.stat-label { color: var(--color-text-muted); font-size: 0.9rem; }

/* ---------- Timeline (experience) ---------- */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 32px; border-left: 2px solid var(--color-border); }
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item::before { content: ''; position: absolute; left: -39px; top: 4px; width: 14px; height: 14px; border-radius: 50%; background: var(--color-primary); border: 3px solid var(--color-bg); }
.timeline-item h3 { font-size: 1.1rem; }
.timeline-item .org { color: var(--color-primary); font-weight: 600; font-size: 0.95rem; }
.timeline-item .dates { color: var(--color-text-muted); font-size: 0.85rem; margin-bottom: 8px; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.9rem; }
.form-control {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--color-border);
  background: var(--color-surface); color: var(--color-text); font-family: var(--font-body); font-size: 0.95rem;
  transition: border-color var(--transition);
}
.form-control:focus { outline: none; border-color: var(--color-primary); }
textarea.form-control { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

/* ---------- Alerts / status ---------- */
.alert { padding: 14px 18px; border-radius: 10px; margin-bottom: 18px; font-size: 0.9rem; }
.alert-success { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
[data-theme="dark"] .alert-success { background: #052e21; color: #6ee7b7; border-color: #065f46; }
[data-theme="dark"] .alert-error { background: #2c0b0b; color: #fca5a5; border-color: #7f1d1d; }

.status-valid { color: #047857; font-weight: 700; }
.status-invalid { color: #b91c1c; font-weight: 700; }

/* ---------- Filters ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 36px; }
.filter-btn { padding: 8px 18px; border-radius: 999px; border: 1px solid var(--color-border); background: var(--color-surface); cursor: pointer; font-size: 0.85rem; font-weight: 600; color: var(--color-text-muted); transition: all var(--transition); }
.filter-btn.active, .filter-btn:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.search-box { max-width: 420px; margin: 0 auto 24px; }

/* ---------- Footer ---------- */
footer { background: var(--color-bg-alt); border-top: 1px solid var(--color-border); padding: 48px 0 24px; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-brand { font-family: var(--font-heading); font-weight: 800; font-size: 1.2rem; margin-bottom: 10px; }
.footer-brand span { color: var(--color-primary); }
footer h4 { font-size: 0.95rem; margin-bottom: 12px; }
footer ul { list-style: none; }
footer li { margin-bottom: 8px; }
footer a { color: var(--color-text-muted); font-size: 0.9rem; }
footer a:hover { color: var(--color-primary); }
.footer-bottom { text-align: center; color: var(--color-text-muted); font-size: 0.85rem; padding-top: 20px; border-top: 1px solid var(--color-border); }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Loading / empty states ---------- */
.loading, .empty-state { text-align: center; padding: 40px; color: var(--color-text-muted); }
.spinner { width: 32px; height: 32px; border: 3px solid var(--color-border); border-top-color: var(--color-primary); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto 12px; }
@keyframes spin { to { transform: rotate(360deg); } }
.fade-in { animation: fadeIn 0.5s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }