/* === ROOT TOKENS === */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f7f7f7;
  --bg-tertiary: #efefef;
  --text-primary: #0a0a0a;
  --text-secondary: #555555;
  --text-muted: #999999;
  --accent: #1a1a1a;
  --accent-hover: #333333;
  --accent-secondary: #666666;
  --accent-purple: #555555;
  --accent-yellow: #b85c00;
  --border: #e0e0e0;
  --border-focus: #0a0a0a;
  --border-glow: rgba(10, 10, 10, 0.2);
  --success: #2d7a3a;
  --warning: #b85c00;
  --danger: #c0392b;
  --card-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  --glow-cyan: 0 0 10px rgba(0, 0, 0, 0.15);
  --glow-pink: 0 0 10px rgba(0, 0, 0, 0.1);
  --scanline-opacity: 0.03;
  --transition-speed: 0.35s;
  --font-display: "DM Sans", sans-serif;
  --font-body: "DM Sans", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --study: #4f46e5;
  --work: #06b6d4;
  --personal: #ec4899;
  --fitness: #22c55e;
  --creative: #f97316;
}

[data-mode="cyber"] {
  --bg-primary: #090b12;
  --bg-secondary: #0d1117;
  --bg-tertiary: #111827;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #475569;
  --accent: #00f5d4;
  --accent-hover: #00d4b4;
  --accent-secondary: #f72585;
  --accent-purple: #7209b7;
  --accent-yellow: #ffd60a;
  --border: #1e293b;
  --border-focus: #00f5d4;
  --border-glow: rgba(0, 245, 212, 0.4);
  --success: #00f5d4;
  --warning: #ffd60a;
  --danger: #f72585;
  --card-shadow: 0 0 20px rgba(0, 245, 212, 0.08);
  --glow-cyan: 0 0 10px rgba(0, 245, 212, 0.6), 0 0 30px rgba(0, 245, 212, 0.2);
  --glow-pink: 0 0 10px rgba(247, 37, 133, 0.6), 0 0 30px rgba(247, 37, 133, 0.2);
  --font-display: "Orbitron", sans-serif;
}

/* === RESET & BASE === */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  transition: background-color 0.35s ease, color 0.35s ease;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: all var(--transition-speed) ease;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin-top: 0;
}

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

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

/* === NAVIGATION === */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--border);
  background: var(--bg-primary);
  transition: all var(--transition-speed) ease;
}

[data-mode="cyber"] .site-nav {
  background: rgba(9, 11, 18, 0.95);
  backdrop-filter: blur(8px);
}

.nav-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.04em;
}

[data-mode="cyber"] .logo {
  color: var(--accent);
  text-shadow: var(--glow-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.95rem;
}

.nav-link {
  position: relative;
  color: var(--text-secondary);
  padding: 0.3rem 0.1rem;
}

.nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  height: 2px;
  width: 100%;
  background: var(--accent);
}

.theme-toggle {
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
}

[data-mode="cyber"] .theme-toggle {
  border-color: var(--accent);
  color: var(--accent);
}

.hamburger {
  display: none;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.5rem;
}

/* === GLOBAL COMPONENTS === */
.btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 0.65rem 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:hover {
  border-color: var(--accent);
}

[data-mode="cyber"] .btn {
  border-color: var(--accent);
  color: var(--accent);
  text-transform: uppercase;
  font-family: var(--font-display);
}

[data-mode="cyber"] .btn:hover {
  background: var(--accent);
  color: var(--bg-primary);
  box-shadow: var(--glow-cyan);
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-speed) ease;
}

.badge {
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.task-btn {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.55rem;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.task-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.priority-low { background: rgba(34, 197, 94, 0.18); color: #19763c; }
.priority-medium { background: rgba(245, 158, 11, 0.2); color: #a45300; }
.priority-high { background: rgba(239, 68, 68, 0.18); color: #b91c1c; }
.priority-critical { background: rgba(127, 29, 29, 0.25); color: #7f1d1d; }

[data-mode="cyber"] .priority-low { color: var(--text-muted); background: rgba(71, 85, 105, 0.2); }
[data-mode="cyber"] .priority-medium { color: var(--accent-yellow); background: rgba(255, 214, 10, 0.16); }
[data-mode="cyber"] .priority-high { color: var(--accent); background: rgba(0, 245, 212, 0.12); }
[data-mode="cyber"] .priority-critical { color: var(--danger); background: rgba(247, 37, 133, 0.12); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.hidden {
  display: none !important;
}

/* === CYBER EFFECTS === */
[data-mode="cyber"] body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(0, 245, 212, 0.04) 0px, rgba(0, 245, 212, 0.04) 1px, transparent 1px, transparent 40px),
    repeating-linear-gradient(90deg, rgba(0, 245, 212, 0.04) 0px, rgba(0, 245, 212, 0.04) 1px, transparent 1px, transparent 40px);
}

[data-mode="cyber"] body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(transparent 0 2px, rgba(0, 0, 0, var(--scanline-opacity)) 2px 4px);
}

@keyframes glitch {
  0%, 92%, 100% { transform: translateX(0); text-shadow: var(--glow-cyan); }
  93% { transform: translateX(-3px); text-shadow: -3px 0 var(--accent-secondary), 3px 0 var(--accent); }
  94% { transform: translateX(3px); text-shadow: 3px 0 var(--accent-secondary), -3px 0 var(--accent); }
  95% { transform: translateX(0); }
}

.glitch-text { animation: glitch 6s infinite; }

@keyframes border-pulse {
  0%, 100% { border-left-color: var(--danger); }
  50% { border-left-color: transparent; }
}

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

.terminal-heading::after {
  content: "|";
  color: var(--accent);
  animation: blink 1s infinite;
}

/* === CUSTOM SELECT === */
.custom-select {
  position: relative;
  display: inline-block;
  width: 100%;
  user-select: none;
}

.custom-select__trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 14px;
  text-align: left;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.custom-select__trigger:hover {
  border-color: var(--accent);
}

.custom-select.open .custom-select__trigger {
  border-color: var(--accent);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.custom-select__arrow {
  font-size: 12px;
  color: var(--text-muted);
  transition: transform 0.2s;
  pointer-events: none;
}

.custom-select.open .custom-select__arrow {
  transform: rotate(180deg);
}

.custom-select__options {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 1000;
  list-style: none;
  margin: 0;
  padding: 4px 0;
  background: var(--bg-secondary);
  border: 1px solid var(--accent);
  border-top: none;
  border-bottom-left-radius: var(--radius-sm);
  border-bottom-right-radius: var(--radius-sm);
  max-height: 220px;
  overflow-y: auto;
}

.custom-select.open .custom-select__options {
  display: block;
}

.custom-select__option {
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
  font-family: var(--font-body);
  transition: background 0.15s, color 0.15s;
}

.custom-select__option:hover {
  background: var(--bg-tertiary);
  color: var(--accent);
}

.custom-select__option.selected {
  color: var(--accent);
  font-weight: 500;
}

/* === FOCUS MODE OVERLAY === */
#focus-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg-primary);
  transition: background 0.35s;
}

#focus-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  max-width: 480px;
  padding: 2rem;
}

#focus-session-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

#focus-task-title {
  font-size: 26px;
  font-weight: 500;
  color: var(--text-primary);
  font-family: var(--font-display);
  line-height: 1.3;
  margin: 0;
}

#focus-timer-ring {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

#focus-timer-display {
  position: absolute;
  font-size: 36px;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

#focus-ring-bg { stroke: var(--border); }
#focus-ring-progress {
  stroke: var(--accent);
  transition: stroke-dashoffset 1s linear;
}

#focus-xp-bonus {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

#focus-controls {
  display: flex;
  gap: 12px;
}

#focus-pause-btn,
#focus-end-btn {
  padding: 10px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

#focus-pause-btn:hover { border-color: var(--accent); color: var(--accent); }
#focus-end-btn:hover { border-color: var(--danger); color: var(--danger); }

/* === MISSION ROULETTE === */
#roulette-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
}

#roulette-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

#roulette-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

#roulette-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

#roulette-overlay {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(0, 0, 0, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
}

#roulette-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 3rem;
  text-align: center;
  max-width: 420px;
  width: 90%;
  animation: roulette-appear 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes roulette-appear {
  from { transform: scale(0.6); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

#roulette-prefix {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin: 0 0 12px;
}

#roulette-task-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px;
  font-family: var(--font-display);
}

#roulette-priority-display {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin: 0 0 16px;
}

#roulette-countdown {
  font-size: 18px;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-mono);
  margin: 0;
}

/* === MOBILE NAV === */
@media (max-width: 820px) {
  .hamburger { display: inline-flex; }
  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 4%;
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }
  .nav-links.open { transform: translateY(0); }
}