/* ==========================================================================
   DESIGN SYSTEM & TOKENS (Dark Obsidian Default + Crisp Light Mode)
   ========================================================================== */

:root,
[data-theme="dark"] {
  --bg-base: #060913;
  --bg-elevated: rgba(13, 19, 34, 0.72);
  --bg-elevated-solid: #0d1424;
  --bg-card: rgba(15, 23, 42, 0.62);
  --bg-card-hover: rgba(20, 30, 54, 0.82);
  --bg-subtle: rgba(30, 41, 59, 0.48);
  --bg-code: #090e1a;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-subtle: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(56, 189, 248, 0.36);

  --accent-cyan: #22d3ee;
  --accent-indigo: #818cf8;
  --accent-violet: #c084fc;
  --accent-emerald: #34d399;
  --accent-amber: #fbbf24;

  --gradient-brand: linear-gradient(135deg, #22d3ee 0%, #818cf8 52%, #c084fc 100%);
  --gradient-btn: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
  --spotlight-fill: rgba(56, 189, 248, 0.09);
  --spotlight-border: rgba(56, 189, 248, 0.45);

  --shadow-lg: 0 20px 50px -15px rgba(0, 0, 0, 0.65);
  --shadow-glow: 0 0 32px rgba(34, 211, 238, 0.22);
  --nav-bg: rgba(6, 9, 19, 0.76);
  --modal-backdrop: rgba(3, 6, 14, 0.82);
}

[data-theme="light"] {
  --bg-base: #f8fafc;
  --bg-elevated: rgba(255, 255, 255, 0.85);
  --bg-elevated-solid: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.78);
  --bg-card-hover: rgba(255, 255, 255, 0.96);
  --bg-subtle: rgba(226, 232, 240, 0.65);
  --bg-code: #0f172a;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --border-subtle: rgba(15, 23, 42, 0.1);
  --border-strong: rgba(79, 70, 229, 0.35);

  --accent-cyan: #0284c7;
  --accent-indigo: #4f46e5;
  --accent-violet: #7c3aed;
  --accent-emerald: #059669;
  --accent-amber: #d97706;

  --gradient-brand: linear-gradient(135deg, #0284c7 0%, #4f46e5 55%, #7c3aed 100%);
  --gradient-btn: linear-gradient(135deg, #0284c7 0%, #4f46e5 100%);
  --spotlight-fill: rgba(79, 70, 229, 0.06);
  --spotlight-border: rgba(79, 70, 229, 0.35);

  --shadow-lg: 0 20px 45px -15px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 8px 26px rgba(79, 70, 229, 0.22);
  --nav-bg: rgba(248, 250, 252, 0.82);
  --modal-backdrop: rgba(15, 23, 42, 0.52);
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  font-size: 16px;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.35s ease, color 0.35s ease;
  -webkit-font-smoothing: antialiased;
}

body.modal-open {
  overflow: hidden;
}

code,
pre,
.mono {
  font-family: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

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

button,
input,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

/* Фоновый Canvas */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* Тонкая виньетка/сетка поверх фона для глубины */
.bg-vignette {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 0%, transparent 0%, var(--bg-base) 100%);
  opacity: 0.42;
}

.page-shell {
  position: relative;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Скроллбар */
::-webkit-scrollbar {
  width: 9px;
  height: 9px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: rgba(100, 116, 139, 0.35);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-indigo);
}

/* ==========================================================================
   HEADER / NAVBAR
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 16px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 0.92rem;
  font-weight: 700;
  box-shadow: var(--shadow-glow);
}

.brand-text span {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Переключатель анимации фона */
.bg-switcher-wrap {
  position: relative;
}

.pill-control {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.pill-control:hover {
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}

.pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

.bg-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: 240px;
  padding: 8px;
  border-radius: 16px;
  background: var(--bg-elevated-solid);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-lg);
  display: none;
  flex-direction: column;
  gap: 4px;
  z-index: 80;
}

.bg-dropdown.open {
  display: flex;
  animation: popIn 0.18s cubic-bezier(0.22, 1, 0.36, 1);
}

.bg-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 0.86rem;
  color: var(--text-secondary);
  text-align: left;
  transition: background 0.18s ease, color 0.18s ease;
}

.bg-option:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.bg-option.active {
  background: rgba(56, 189, 248, 0.14);
  color: var(--accent-cyan);
  font-weight: 600;
}

.kbd-hint {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.73rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.icon-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
}

/* ==========================================================================
   HERO SECTION + INTERACTIVE TERMINAL
   ========================================================================== */

.hero-section {
  padding: 72px 0 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 44px;
  align-items: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin-bottom: 22px;
  backdrop-filter: blur(10px);
}

.status-pulse {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
}

.status-pulse::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--accent-emerald);
  animation: pulseRing 2s infinite;
}

@keyframes pulseRing {
  0% { transform: scale(0.7); opacity: 0.9; }
  100% { transform: scale(1.8); opacity: 0; }
}

.hero-title {
  font-size: clamp(2.2rem, 4.4vw, 3.55rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.035em;
  margin-bottom: 14px;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-typewriter-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: clamp(1.05rem, 1.8vw, 1.32rem);
  font-weight: 600;
  color: var(--accent-cyan);
  min-height: 2rem;
  margin-bottom: 18px;
}

.type-cursor {
  display: inline-block;
  width: 2.5px;
  height: 1.2em;
  background: var(--accent-cyan);
  animation: blink 0.95s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-bio {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 56ch;
  margin-bottom: 28px;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.22s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.25s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(56, 189, 248, 0.34);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.85rem;
  border-radius: 10px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ИНТЕРАКТИВНЫЙ ТЕРМИНАЛ */
.terminal-card {
  border-radius: 18px;
  background: rgba(9, 14, 26, 0.88);
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  backdrop-filter: blur(18px);
  color: #e2e8f0;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.9);
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
}

.terminal-dots {
  display: flex;
  gap: 7px;
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.terminal-dot.red { background: #fb7185; }
.terminal-dot.yellow { background: #fbbf24; }
.terminal-dot.green { background: #34d399; }

.terminal-title {
  font-size: 0.78rem;
  color: #94a3b8;
}

.terminal-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(15, 23, 42, 0.55);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.term-chip {
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 0.74rem;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.24);
  color: #67e8f9;
  transition: background 0.18s ease, transform 0.15s ease;
}

.term-chip:hover {
  background: rgba(56, 189, 248, 0.24);
  transform: translateY(-1px);
}

.terminal-body {
  height: 255px;
  overflow-y: auto;
  padding: 14px 16px;
  font-size: 0.83rem;
  line-height: 1.55;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.term-line {
  word-break: break-word;
}
.term-cmd {
  color: #38bdf8;
  font-weight: 600;
}
.term-out {
  color: #cbd5e1;
}
.term-accent {
  color: #a78bfa;
}
.term-success {
  color: #34d399;
}

.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(15, 23, 42, 0.75);
}

.term-prompt {
  color: #34d399;
  font-size: 0.84rem;
  font-weight: 600;
  white-space: nowrap;
}

.terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #f8fafc;
  font-size: 0.84rem;
}

.terminal-input::placeholder {
  color: #64748b;
}

/* ==========================================================================
   SECTIONS & SPOTLIGHT CARDS
   ========================================================================== */

.section {
  padding: 72px 0;
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.18;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 0.98rem;
  max-width: 58ch;
  margin-top: 6px;
}

/* Эффект прожектора и 3D-наклона */
.spotlight-card {
  position: relative;
  border-radius: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  overflow: hidden;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s ease, box-shadow 0.3s ease, background 0.25s ease;
  transform-style: preserve-3d;
}

.spotlight-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    520px circle at var(--mouse-x, -300px) var(--mouse-y, -300px),
    var(--spotlight-fill),
    transparent 45%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 0;
}

.spotlight-card:hover {
  border-color: var(--spotlight-border);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}

.spotlight-card:hover::before {
  opacity: 1;
}

.spotlight-card > * {
  position: relative;
  z-index: 1;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1), transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   GITHUB PROJECTS SECTION
   ========================================================================== */

.github-sync-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  margin-bottom: 22px;
  backdrop-filter: blur(12px);
}

.github-source-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
}

.gh-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  object-fit: cover;
  display: none;
}

.gh-avatar.visible {
  display: block;
}

.github-sync-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.input-field {
  padding: 9px 14px;
  border-radius: 10px;
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-field:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}

.toolbar-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 26px;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.filter-pill:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.filter-pill.active {
  background: var(--gradient-btn);
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.25);
}

.toolbar-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 20px;
}

.project-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  min-height: 255px;
}

.project-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.project-name-row {
  display: flex;
  align-items: center;
  gap: 9px;
}

.repo-icon {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.project-title {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  word-break: break-word;
}

.badge-featured {
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(52, 211, 153, 0.14);
  color: var(--accent-emerald);
  border: 1px solid rgba(52, 211, 153, 0.3);
  white-space: nowrap;
}

.project-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.topic-tag {
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 0.75rem;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.lang-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-weight: 500;
}

.lang-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.project-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  transition: all 0.18s ease;
}

.project-link-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-1px);
}

/* ==========================================================================
   BLOG SECTION
   ========================================================================== */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.post-card {
  display: flex;
  flex-direction: column;
  padding: 26px;
  cursor: pointer;
}

.post-card.featured-post {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(129, 140, 248, 0.08)), var(--bg-card);
  border-color: var(--border-strong);
}

.post-meta-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.post-category {
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 600;
  background: rgba(129, 140, 248, 0.15);
  color: var(--accent-indigo);
  border: 1px solid rgba(129, 140, 248, 0.28);
}

.post-date-info {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.post-title {
  font-size: 1.32rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

.post-card.featured-post .post-title {
  font-size: clamp(1.4rem, 2.4vw, 1.82rem);
}

.post-card:hover .post-title {
  color: var(--accent-cyan);
}

.post-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.post-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.post-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.bookmark-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.bookmark-btn:hover,
.bookmark-btn.saved {
  color: var(--accent-amber);
  border-color: rgba(251, 191, 36, 0.45);
  background: rgba(251, 191, 36, 0.12);
}

.read-more-label {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--accent-cyan);
  white-space: nowrap;
}

/* ==========================================================================
   PLAYGROUND: SKILLS + LIVE ANIMATION PHYSICS TUNER
   ========================================================================== */

.playground-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: stretch;
}

.skills-panel,
.tuner-panel {
  padding: 28px;
}

.skill-group {
  margin-bottom: 22px;
}

.skill-group:last-child {
  margin-bottom: 0;
}

.skill-group-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-chip {
  padding: 7px 13px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.skill-chip:hover,
.skill-chip.active {
  border-color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.14);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.mode-cards-mini {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 20px;
}

.mode-btn-card {
  padding: 10px 12px;
  border-radius: 11px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  font-size: 0.83rem;
  font-weight: 600;
  text-align: left;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.mode-btn-card:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.mode-btn-card.active {
  background: rgba(34, 211, 238, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.slider-control {
  margin-bottom: 16px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.range-slider {
  width: 100%;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

/* ==========================================================================
   ARTICLE READER MODAL
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: var(--modal-backdrop);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.open {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.reader-dialog {
  position: relative;
  width: 100%;
  max-width: 820px;
  max-height: 90vh;
  border-radius: 22px;
  background: var(--bg-elevated-solid);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: popIn 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

.reader-progress-track {
  height: 3px;
  width: 100%;
  background: var(--bg-subtle);
}

.reader-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--gradient-brand);
  transition: width 0.08s linear;
}

.reader-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.reader-scroll {
  overflow-y: auto;
  padding: 36px 40px 44px;
}

.article-prose {
  max-width: 66ch;
  margin: 0 auto;
}

.article-prose h1 {
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.article-prose h2 {
  font-size: 1.38rem;
  margin: 30px 0 12px;
  letter-spacing: -0.02em;
}

.article-prose h3 {
  font-size: 1.12rem;
  margin: 24px 0 10px;
  color: var(--accent-cyan);
}

.article-prose p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1.02rem;
  line-height: 1.75;
}

.article-prose ul {
  margin: 0 0 18px 20px;
  color: var(--text-secondary);
}

.article-prose li {
  margin-bottom: 8px;
  line-height: 1.65;
}

.article-prose strong {
  color: var(--text-primary);
}

.article-prose blockquote {
  margin: 22px 0;
  padding: 14px 18px;
  border-left: 3px solid var(--accent-cyan);
  background: var(--bg-subtle);
  border-radius: 0 12px 12px 0;
  color: var(--text-primary);
  font-style: italic;
}

.article-prose p code,
.article-prose li code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  font-size: 0.87em;
  color: var(--accent-cyan);
}

.code-block-wrap {
  margin: 20px 0;
  border-radius: 14px;
  background: var(--bg-code);
  border: 1px solid rgba(148, 163, 184, 0.2);
  overflow: hidden;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: rgba(30, 41, 59, 0.55);
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  font-size: 0.76rem;
  color: #94a3b8;
}

.copy-code-btn {
  padding: 3px 9px;
  border-radius: 6px;
  background: rgba(56, 189, 248, 0.14);
  color: #67e8f9;
  font-size: 0.75rem;
  font-weight: 600;
}

.copy-code-btn:hover {
  background: rgba(56, 189, 248, 0.26);
}

.code-block-wrap pre {
  padding: 16px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  color: #e2e8f0;
}

.reactions-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.reaction-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  font-size: 0.88rem;
  font-weight: 600;
  transition: all 0.18s ease;
}

.reaction-btn:hover,
.reaction-btn.reacted {
  border-color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.14);
  transform: translateY(-2px);
}

/* ==========================================================================
   COMMAND PALETTE (Ctrl+K)
   ========================================================================== */

.cmd-dialog {
  width: 100%;
  max-width: 580px;
  border-radius: 18px;
  background: var(--bg-elevated-solid);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: popIn 0.18s cubic-bezier(0.22, 1, 0.36, 1);
}

.cmd-search-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-subtle);
}

.cmd-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: 1rem;
  color: var(--text-primary);
}

.cmd-list {
  max-height: 340px;
  overflow-y: auto;
  padding: 8px;
}

.cmd-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 11px 14px;
  border-radius: 11px;
  text-align: left;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: background 0.15s ease, color 0.15s ease;
}

.cmd-item:hover,
.cmd-item.selected {
  background: rgba(56, 189, 248, 0.14);
  color: var(--text-primary);
}

.cmd-item-type {
  font-size: 0.74rem;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--bg-subtle);
  color: var(--text-muted);
}

/* ==========================================================================
   FOOTER & TOAST
   ========================================================================== */

.site-footer {
  padding: 40px 0 48px;
  border-top: 1px solid var(--border-subtle);
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.edge-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.toast-container {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 12px 18px;
  border-radius: 12px;
  background: var(--bg-elevated-solid);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  animation: popIn 0.22s cubic-bezier(0.22, 1, 0.36, 1);
}

.empty-state {
  grid-column: 1 / -1;
  padding: 42px 24px;
  text-align: center;
  border-radius: 16px;
  border: 1px dashed var(--border-subtle);
  color: var(--text-muted);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes popIn {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 980px) {
  .hero-grid,
  .playground-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 16px 24px;
    background: var(--bg-elevated-solid);
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links.mobile-open {
    display: flex;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }
}

@media (max-width: 720px) {
  .blog-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .hero-section {
    padding: 44px 0 40px;
  }

  .reader-scroll {
    padding: 24px 20px 32px;
  }

  .kbd-hint,
  .pill-label-desktop {
    display: none;
  }
}