/* ═══════════════════════════════════════════════════════════
   PORTFOLIO AKADEMIK — Salim Theme Design System
   base.css: tokens · reset · typography · utilities
   ═══════════════════════════════════════════════════════════ */

/* ── Google Fonts ────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  /* Colors (Salim Theme) */
  --primary: #1a365d;
  --primary-light: #2c5282;
  --accent: #d69e2e;
  --accent-light: #ecc94b;
  --dark: #1a202c;
  --gray-900: #171923;
  --gray-800: #2d3748;
  --gray-700: #4a5568;
  --gray-600: #718096;
  --gray-500: #a0aec0;
  --gray-400: #cbd5e0;
  --gray-300: #e2e8f0;
  --gray-200: #edf2f7;
  --gray-100: #f7fafc;
  --white: #ffffff;
  
  /* Legacy mapping for compatibility */
  --navy:        #1a365d;
  --navy-mid:    #2c5282;
  --navy-light:  #2b6cb0;
  --cream:       #ffffff;
  --cream-dim:   #f7fafc;
  --cream-dark:  #edf2f7;
  --gold:        #d69e2e;
  --gold-light:  #ecc94b;
  --gold-dim:    rgba(214, 158, 46, 0.2);
  --text:        #2d3748;
  --text-mid:    #4a5568;
  --muted:       #718096;
  --border:      #e2e8f0;

  /* Gradients */
  --gradient-1: linear-gradient(135deg, #1a365d 0%, #2c5282 50%, #2b6cb0 100%);
  --gradient-2: linear-gradient(135deg, #d69e2e 0%, #ecc94b 100%);

  /* Typography (Portfolio-v2 Structure) */
  --font-serif: 'Playfair Display', serif;
  --font-mono:  'Inter', monospace;
  --font-sans:  'Inter', sans-serif;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);

  /* Transitions */
  --t: .3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--white);
  color: var(--gray-800);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: all var(--t); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: var(--font-sans); cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: var(--font-sans); }
ul, ol { list-style: none; }

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--gray-200); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }

/* ── Typography (Synchronized with portfolio-v2) ──────────── */
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 300; line-height: 1.1; }

.display {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 5vw, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  color: var(--primary);
}
.display em { font-style: italic; color: var(--accent); font-family: var(--font-serif); }

.heading-xl {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 3.5vw, 3.5rem);
  font-weight: 300;
  color: var(--primary);
}
.heading-xl.light { color: var(--white); }

.heading-lg {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 2.5vw, 2.5rem);
  font-weight: 300;
  color: var(--primary);
}

.heading-md {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--primary);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-weight: 600;
}
.section-tag::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}
.section-tag.light { color: var(--accent-light); }
.section-tag.light::before { background: var(--accent-light); }

.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 6px;
  display: block;
}

/* ── Layout ───────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
.container-sm { max-width: 780px; margin: 0 auto; padding: 0 48px; }

/* ── Buttons (Synchronized with portfolio-v2) ─────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 10px 22px;
  transition: all var(--t);
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: 0; /* Match v2 flat style */
}
.btn-primary  { background: var(--primary); color: var(--white); border-color: var(--primary); }
.btn-outline  { background: transparent; color: var(--primary);  border-color: var(--primary); }
.btn-ghost    { background: transparent; color: var(--gray-500); border-color: var(--gray-300); }

.btn-primary:hover  { background: var(--accent);  border-color: var(--accent); color: var(--white); }
.btn-outline:hover  { background: var(--primary);  color: var(--white); }
.btn-ghost:hover    { color: var(--primary); border-color: var(--primary); }

.btn-sm { padding: 6px 14px; font-size: 10px; }
.btn-lg { padding: 14px 32px; font-size: 12px; }

/* ── Badge / Tag ──────────────────────────────────────────── */
.badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 3px 8px;
  display: inline-block;
}
.badge-navy   { background: var(--primary);   color: var(--white); }
.badge-gold   { background: transparent; color: var(--accent);  border: 1px solid var(--gold-dim); }

/* ── Animations ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── Loading ──────────────────────────────────────────────── */
#page-loading {
  position: fixed;
  inset: 0;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}
#page-loading.hide { opacity: 0; pointer-events: none; transition: opacity .4s; }
.loading-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}