/* =====================================================
   VARIABLES
   ===================================================== */

:root {
  --bg:          #080d1a;
  --bg-surface:  #0d1426;
  --bg-card:     #111827;
  --bg-hover:    #161f35;
  --accent:      #22d3ee;
  --accent-dim:  rgba(34, 211, 238, 0.10);
  --accent-glow: rgba(34, 211, 238, 0.20);
  --accent-2:    #818cf8;
  --accent-2dim: rgba(129, 140, 248, 0.10);
  --text:        #f1f5f9;
  --text-muted:  #94a3b8;
  --text-dim:    #475569;
  --border:      rgba(255, 255, 255, 0.07);
  --b-accent:    rgba(34, 211, 238, 0.25);
  --success:     #4ade80;
  --warn:        #fbbf24;
  --err:         #f87171;
  --note:        #818cf8;
  --mono:        'JetBrains Mono', 'Courier New', monospace;
  --sans:        'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --rad:         8px;
  --rad-lg:      14px;
  --nav-h:       64px;
  --ease:        0.25s ease;
}

[data-theme="light"] {
  --bg:          #f0f4ff;
  --bg-surface:  #ffffff;
  --bg-card:     #ffffff;
  --bg-hover:    #f5f8ff;
  --accent:      #0284c7;
  --accent-dim:  rgba(2, 132, 199, 0.08);
  --accent-glow: rgba(2, 132, 199, 0.15);
  --accent-2:    #6366f1;
  --accent-2dim: rgba(99, 102, 241, 0.08);
  --text:        #0f172a;
  --text-muted:  #475569;
  --text-dim:    #94a3b8;
  --border:      rgba(0, 0, 0, 0.08);
  --b-accent:    rgba(2, 132, 199, 0.25);
  --success:     #16a34a;
  --warn:        #d97706;
  --err:         #dc2626;
  --note:        #6366f1;
}

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

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--ease), color var(--ease);
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--b-accent); border-radius: 3px; }

h1, h2, h3 {
  font-family: var(--sans);
  font-weight: 700;
  line-height: 1.2;
}

p { color: var(--text-muted); line-height: 1.7; }
strong { color: var(--text); font-weight: 600; }
em { color: var(--warn); font-style: normal; }
a { text-decoration: none; color: inherit; }

/* =====================================================
   LAYOUT
   ===================================================== */

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }

.sec-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 10px;
  opacity: 0.85;
}

.sec-heading {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  color: var(--text);
  margin-bottom: 10px;
}

.sec-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 48px;
  max-width: 520px;
}

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

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  background: transparent;
  transition: background var(--ease), border-bottom var(--ease), backdrop-filter var(--ease);
}

.navbar.scrolled {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.nav-brand {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  transition: color var(--ease);
}

.brand-tilde { color: var(--accent); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--rad);
  transition: color var(--ease), background var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-dim);
}

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

/* Theme toggle */
.theme-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--b-accent);
  color: var(--accent);
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--ease), transform var(--ease);
  position: relative;
  overflow: hidden;
}

.theme-btn:hover {
  background: var(--accent-glow);
  transform: scale(1.08);
}

.theme-sun, .theme-moon {
  position: absolute;
  transition: transform 0.4s ease, opacity 0.4s ease;
  line-height: 1;
}

.theme-sun  { opacity: 0;  transform: translateY(-18px) rotate(90deg); }
.theme-moon { opacity: 1;  transform: translateY(0) rotate(0deg); }

[data-theme="light"] .theme-sun  { opacity: 1; transform: translateY(0) rotate(0deg); }
[data-theme="light"] .theme-moon { opacity: 0; transform: translateY(18px) rotate(-90deg); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 1px;
  transition: transform var(--ease), opacity var(--ease);
  transform-origin: center;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =====================================================
   HERO
   ===================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.bg-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  transition: opacity 0.5s ease;
}

[data-theme="light"] .bg-canvas { opacity: 0.6; }

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 680px;
  padding: 0 24px;
  margin-top: var(--nav-h);
}

/* Terminal window */
.terminal-win {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--rad-lg);
  overflow: hidden;
  box-shadow:
    0 0 0 1px var(--border),
    0 24px 64px rgba(0, 0, 0, 0.45),
    0 0 80px rgba(34, 211, 238, 0.04);
  transition: box-shadow var(--ease), background var(--ease);
}

[data-theme="light"] .terminal-win {
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.10), 0 1px 0 var(--border);
}

.term-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.term-dots { display: flex; gap: 6px; }

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-r { background: #f87171; }
.dot-y { background: #fbbf24; }
.dot-g { background: #4ade80; }

.term-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  flex: 1;
  text-align: center;
}

.term-body {
  padding: 28px 28px 24px;
  min-height: 260px;
  font-family: var(--mono);
  font-size: 0.875rem;
  line-height: 1.85;
  position: relative;
}

#termOut .line {
  display: block;
  white-space: pre-wrap;
  word-break: break-all;
}

#termOut .cmd  { color: var(--accent); }
#termOut .res  { color: var(--text-muted); }
#termOut .dim  { color: var(--text-dim); }
#termOut .ok   { color: var(--success); }
#termOut .blank { display: block; height: 4px; }

.term-cursor {
  display: inline-block;
  color: var(--accent);
  animation: blink 1s step-end infinite;
  vertical-align: middle;
  margin-left: 1px;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: opacity 0.5s ease;
}

.scroll-hint.hidden { opacity: 0; pointer-events: none; }

.scroll-bar {
  display: block;
  width: 1px;
  height: 38px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2.2s ease-in-out infinite;
}

/* =====================================================
   ABOUT
   ===================================================== */

.about-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 52px;
  align-items: start;
}

.about-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  position: sticky;
  top: calc(var(--nav-h) + 40px);
}

.avatar-box {
  width: 116px;
  height: 116px;
  border-radius: var(--rad-lg);
  background: var(--accent-dim);
  border: 1px solid var(--b-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.avatar-glyph {
  font-size: 2.4rem;
  color: var(--accent);
  line-height: 1;
}

.avatar-scan {
  position: absolute;
  top: -10%;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  animation: scanDown 3.2s ease-in-out infinite;
}

.status-chip {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 20px;
  white-space: nowrap;
}

.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
  animation: pulseDot 2s ease infinite;
}

.about-intro {
  font-size: 1.08rem;
  color: var(--text) !important;
  margin-bottom: 16px;
}

.about-right p { margin-bottom: 16px; }

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.chip-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--b-accent);
}

/* =====================================================
   SKILLS
   ===================================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--rad-lg);
  padding: 24px;
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease,
    border-color var(--ease),
    background var(--ease),
    box-shadow var(--ease);
}

.skill-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.skill-card:hover {
  border-color: var(--b-accent);
  background: var(--bg-hover);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.14);
}

.sk-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.sk-badge {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--bg);
  background: var(--accent);
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.sk-status {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-dim);
}

.sk-title {
  font-size: 1rem;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 8px;
}

.sk-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
}

.sk-bar-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sk-bar {
  flex: 1;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.sk-fill {
  height: 100%;
  background: linear-gradient(to right, var(--accent), var(--accent-2));
  border-radius: 2px;
  width: 0%;
  transition: width 1.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sk-pct {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  min-width: 32px;
  text-align: right;
}

/* =====================================================
   PROJECTS
   ===================================================== */

.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 16px;
}

.proj-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--rad-lg);
  min-height: 210px;
  overflow: hidden;
  transition: border-color var(--ease), box-shadow var(--ease);
  cursor: default;
}

.proj-card:hover {
  border-color: var(--b-accent);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.14);
}

.proj-ghost {
  padding: 24px;
  filter: blur(5px);
  user-select: none;
  pointer-events: none;
}

.proj-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--bg-card);
  transition: background var(--ease);
}

.proj-card:hover .proj-overlay {
  background: rgba(17, 24, 39, 0.88);
}

[data-theme="light"] .proj-card:hover .proj-overlay {
  background: rgba(255, 255, 255, 0.88);
}

.proj-lock-icon {
  font-size: 1.9rem;
  color: var(--text-dim);
  line-height: 1;
  transition: color var(--ease), transform var(--ease);
}

.proj-plus { font-style: normal; font-size: 2rem; }

.proj-card:hover .proj-lock-icon { color: var(--accent); transform: scale(1.1); }

.proj-lock-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.proj-lock-sub {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-dim);
}

.proj-tag {
  display: block;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.proj-title {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 6px;
}

.proj-footnote {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-dim);
}

/* =====================================================
   EXPERIENCE
   ===================================================== */

.exp-term {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--rad-lg);
  overflow: hidden;
}

.exp-term-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.exp-filename {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.exp-mode {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.exp-term-body {
  padding: 24px;
  font-family: var(--mono);
  font-size: 0.83rem;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.log-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.log-ts {
  color: var(--text-dim);
  font-size: 0.75rem;
  min-width: 58px;
  padding-top: 2px;
  flex-shrink: 0;
}

.log-badge {
  font-size: 0.62rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  min-width: 64px;
  text-align: center;
  flex-shrink: 0;
}

.log-badge.boot {
  background: rgba(34, 211, 238, 0.14);
  color: var(--accent);
  border: 1px solid rgba(34, 211, 238, 0.24);
}

.log-badge.pending {
  background: rgba(251, 191, 36, 0.12);
  color: var(--warn);
  border: 1px solid rgba(251, 191, 36, 0.24);
}

.log-badge.note {
  background: rgba(129, 140, 248, 0.12);
  color: var(--accent-2);
  border: 1px solid rgba(129, 140, 248, 0.24);
}

.log-msg {
  color: var(--text-muted);
  line-height: 1.5;
  flex: 1;
}

.log-cursor-blink {
  color: var(--accent);
  font-size: 0.83rem;
  animation: blink 1s step-end infinite;
  margin-top: 2px;
  width: fit-content;
}

/* =====================================================
   CONTACT
   ===================================================== */

.contact-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.c-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--rad-lg);
  padding: 20px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: border-color var(--ease), background var(--ease), box-shadow var(--ease), transform var(--ease);
}

.c-active {
  cursor: pointer;
}

.c-active:hover {
  border-color: var(--b-accent);
  background: var(--bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.c-inactive {
  opacity: 0.55;
  cursor: default;
}

.c-icon {
  font-size: 1.4rem;
  color: var(--accent);
  line-height: 1;
  min-width: 28px;
  transition: color var(--ease);
}

.c-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.c-platform {
  font-family: var(--mono);
  font-size: 0.67rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.c-handle {
  font-size: 0.88rem;
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.c-arrow {
  font-size: 1.1rem;
  color: var(--accent);
  opacity: 0;
  transform: translate(-4px, 4px);
  transition: opacity var(--ease), transform var(--ease);
  flex-shrink: 0;
}

.c-active:hover .c-arrow {
  opacity: 1;
  transform: translate(0, 0);
}

.c-soon {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  background: var(--border);
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

/* =====================================================
   FOOTER
   ===================================================== */

.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  margin-top: 16px;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.f-sep { opacity: 0.3; }

.f-status {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--success);
}

.f-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  animation: pulseDot 2s ease infinite;
}

/* =====================================================
   ANIMATIONS
   ===================================================== */

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes scanDown {
  0%   { top: -10%; opacity: 0.8; }
  100% { top: 110%; opacity: 0.2; }
}

@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4); }
  50%       { box-shadow: 0 0 0 4px rgba(74, 222, 128, 0); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.25; transform: scaleY(0.9); }
  50%       { opacity: 1;    transform: scaleY(1); }
}

/* =====================================================
   RESPONSIVE — TABLET
   ===================================================== */

@media (max-width: 860px) {
  .proj-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* =====================================================
   RESPONSIVE — MOBILE
   ===================================================== */

@media (max-width: 680px) {
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 12px 0;
    transform: translateY(-110%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    z-index: 99;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-links a {
    padding: 12px 24px;
    display: block;
    border-radius: 0;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-left {
    position: static;
    flex-direction: row;
    justify-content: flex-start;
    gap: 20px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .proj-grid {
    grid-template-columns: 1fr;
  }

  .contact-row {
    grid-template-columns: 1fr;
  }

  .section { padding: 64px 0; }

  .term-body {
    padding: 20px;
    font-size: 0.8rem;
    min-height: 200px;
  }
}

@media (max-width: 420px) {
  .navbar { padding: 0 18px; }
  .sec-heading { font-size: 1.75rem; }
  .term-body { font-size: 0.72rem; padding: 14px 16px; }
  .exp-term-body { padding: 16px; font-size: 0.76rem; }
  .log-ts { display: none; }
}