/* ==========================================================================
   AUSTIN VANCE | Master Portfolio Hub & Interactive Device Simulator
   ========================================================================== */

:root {
  --bg-deep: #060911;
  --bg-surface: #0b111e;
  --bg-card: #101828;
  --bg-card-hover: #152238;
  --bg-input: #0a0e1a;

  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-light: rgba(255, 255, 255, 0.14);
  --border-cyan: rgba(56, 189, 248, 0.35);

  --color-cyan: #38bdf8;
  --color-cyan-glow: rgba(56, 189, 248, 0.25);
  --color-gold: #f59e0b;
  --color-emerald: #10b981;
  --color-rose: #f43f5e;

  --text-white: #f8fafc;
  --text-sub: #cbd5e1;
  --text-muted: #64748b;

  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  background: radial-gradient(circle at 15% 15%, rgba(14, 28, 54, 0.6) 0%, transparent 60%),
              radial-gradient(circle at 85% 75%, rgba(20, 15, 35, 0.5) 0%, transparent 60%),
              var(--bg-deep);
}

.container {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

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

button, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

button:focus-visible, a:focus-visible, select:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

/* Ambient Glows */
.ambient-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(160px);
  z-index: 0;
  opacity: 0.14;
}

.glow-cyan { top: -100px; left: 10%; background: var(--color-cyan); }
.glow-gold { bottom: 10%; right: 5%; background: var(--color-gold); }

/* Header */
.portfolio-header {
  position: sticky;
  top: 0;
  background: rgba(6, 9, 17, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 0;
  z-index: 100;
}

.crest-mark {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(56, 189, 248, 0.05));
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-weight: 800;
}

.pulse-emerald {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-emerald);
  box-shadow: 0 0 8px var(--color-emerald);
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

/* Hero */
.hero-section {
  padding: 4.5rem 0 3rem;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2.2rem, 1.6rem + 2.8vw, 4.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 30%, var(--color-cyan) 80%, #7dd3fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-dek {
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.15rem);
  color: var(--text-muted);
  max-width: 740px;
  margin: 0 auto;
  line-height: 1.7;
}

.metrics-strip {
  flex-wrap: wrap;
}

.metric-pill {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Section Padding & Headers */
.section-padding {
  padding: 4rem 0;
  position: relative;
  z-index: 1;
}

.section-title {
  font-size: clamp(1.5rem, 1.3rem + 1vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* --------------------------------------------------------------------------
   Interactive Live Device Simulator
   -------------------------------------------------------------------------- */
.simulator-section {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(11, 17, 30, 0.4);
}

.simulator-controls {
  flex-wrap: wrap;
}

.viewport-buttons {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 2px;
  border-radius: var(--radius-sm);
}

.vp-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 5px 10px;
  border-radius: var(--radius-xs);
  color: var(--text-muted);
}

.vp-btn.active {
  background: rgba(56, 189, 248, 0.15);
  color: var(--color-cyan);
  font-weight: 700;
}

.sim-dropdown {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  color: var(--text-white);
  max-width: 280px;
}

.sim-dropdown:focus {
  border-color: var(--color-cyan);
}

/* Device Frame Shell */
.device-frame-wrap {
  width: 100%;
  max-width: 1200px;
  margin: 1.5rem auto 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  transition: max-width 0.4s cubic-bezier(0.16, 1, 0.3, 1), height 0.4s ease;
}

/* Viewport Sizing Modes */
.device-frame-wrap.vp-desktop {
  max-width: 100%;
  height: 720px;
}

.device-frame-wrap.vp-tablet {
  max-width: 768px;
  height: 780px;
}

.device-frame-wrap.vp-mobile {
  max-width: 390px;
  height: 720px;
}

.browser-chrome-bar {
  background: #090e18;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.6rem 1rem;
}

.chrome-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.chrome-url-bar {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 3px 12px;
  color: var(--text-muted);
  font-size: 0.72rem;
  max-width: 60%;
}

.chrome-reload-btn {
  color: var(--text-muted);
}

.chrome-reload-btn:hover {
  color: var(--text-white);
}

.iframe-container {
  width: 100%;
  height: calc(100% - 40px);
  position: relative;
  background: #070b14;
}

.sim-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* --------------------------------------------------------------------------
   Showcase Cards Grid
   -------------------------------------------------------------------------- */
.project-filter-tabs {
  flex-wrap: wrap;
}

.filter-chip {
  font-size: 0.75rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.filter-chip:hover {
  color: var(--text-white);
  border-color: var(--border-light);
}

.filter-chip.active {
  background: var(--color-cyan);
  color: var(--bg-deep);
  font-weight: 700;
  border-color: var(--color-cyan);
}

.portfolio-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-cyan);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.card-media {
  height: 200px;
  position: relative;
  overflow: hidden;
}

.card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.project-card:hover .card-thumb {
  transform: scale(1.05);
}

.badge-num {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-cyan);
}

.badge-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  color: var(--text-white);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.card-desc {
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}

.card-stack-pills {
  flex-wrap: wrap;
}

.tech-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  color: var(--text-sub);
}

.card-ext-link {
  color: var(--color-cyan);
}

.card-ext-link:hover {
  color: #fff;
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Buttons & Utilities
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}

.btn-xs { padding: 0.35rem 0.75rem; font-size: 0.72rem; }
.btn-sm { padding: 0.5rem 0.95rem; font-size: 0.76rem; }

.btn-cyan {
  background: var(--color-cyan);
  color: var(--bg-deep);
  font-weight: 700;
}

.btn-cyan:hover {
  background: #7dd3fc;
  box-shadow: 0 4px 16px var(--color-cyan-glow);
}

.btn-outline-cyan {
  border: 1px solid var(--border-cyan);
  color: var(--color-cyan);
}

.btn-outline-cyan:hover {
  background: rgba(56, 189, 248, 0.1);
  color: var(--text-white);
}

.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-align { display: flex; align-items: center; }
.justify-center { justify-content: center; }
.text-center { text-align: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

.text-white { color: var(--text-white); }
.text-muted { color: var(--text-muted); }
.text-cyan { color: var(--color-cyan); }
.text-emerald { color: var(--color-emerald); }
.text-gold { color: var(--color-gold); }

.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.85rem; }
.text-base { font-size: 0.95rem; }
.text-lg { font-size: 1.2rem; }

.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-8 { margin-top: 2rem; }
.pt-3 { padding-top: 0.75rem; }
.border-t { border-top: 1px solid var(--border-subtle); }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.block { display: block; }
.inline-block { display: inline-block; }
.max-w-md { max-width: 600px; }
.mx-auto { margin-left: auto; margin-right: auto; }

.icon-xs { width: 14px; height: 14px; }
.icon-sm { width: 18px; height: 18px; }

.hover-white:hover { color: #fff; text-decoration: underline; }

@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}