:root {
    --bg-color: #050505;
    --card-bg: #0f0f0f;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent-red: #ff3333;
    --accent-red-dim: rgba(255, 51, 51, 0.1);
    --accent-green: #33ff33;
    --accent-green-dim: rgba(51, 255, 51, 0.1);
    --accent-yellow: #ffcc00;
    --font-main: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    display: flex;
    justify-content: center;
    min-height: 100vh;
}

.app-container {
    width: 100%;
    max-width: 800px; /* Mobile first / narrow focus similar to apps */
    padding: 20px;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid #222;
    margin-bottom: 40px;
}

.logo {
    font-weight: 900;
    font-size: 1.2rem;
    letter-spacing: -1px;
}

.logo .accent {
    color: var(--accent-red);
}

.profile {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Hero */
.hero-section {
    text-align: center;
    margin-bottom: 50px;
}

.glitch-text {
    font-size: 3rem;
    font-weight: 900;
    color: var(--text-secondary);
    opacity: 0.3;
    letter-spacing: 5px;
    margin-bottom: 10px;
}

.countdown-container {
    margin: 20px 0;
}

.stat-box.large .stat-value {
    font-size: 5rem;
    font-weight: 900;
    display: block;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.stat-label {
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 2px;
    color: var(--text-secondary);
}

.target-date {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 10px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 40px;
}

.card {
    background: var(--card-bg);
    border: 1px solid #222;
    padding: 20px;
    border-radius: 12px;
}

.academic-card {
    grid-column: span 2;
    border-color: #222;
}

.card h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.card .value {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.card p {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

.red-text { color: var(--accent-red); }
.green-text { color: var(--accent-green); }
.yellow-text { color: var(--accent-yellow); }

.failure-card { border-top: 2px solid var(--accent-red); }
.value-card { border-top: 2px solid var(--accent-green); }

/* Checkin */
.checkin-section {
    background: #0a0a0a;
    border: 1px solid #222;
    padding: 25px;
    border-radius: 16px;
    margin-bottom: 40px;
}

.checkin-section h2 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.checkin-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #1a1a1a;
}

.checkin-item:last-child {
    border-bottom: none;
}

.checkin-text {
    margin-left: 15px;
}

.checkin-text strong {
    display: block;
    font-size: 1rem;
}

.checkin-text span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.commit-btn {
    width: 100%;
    background: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 15px;
    font-weight: 900;
    text-transform: uppercase;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.commit-btn:hover {
    background: var(--accent-green);
    color: var(--bg-color);
    box-shadow: 0 0 20px var(--accent-green-dim);
}

/* Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
  flex-shrink: 0;
}

.switch input { 
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #222;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
}

input:checked + .slider {
  background-color: var(--accent-green);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--accent-green);
}

input:checked + .slider:before {
  transform: translateX(22px);
}

.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}

.hidden { display: none; }

/* History Grid */
.data-stream-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(10px, 1fr));
    gap: 4px;
    margin-top: 15px;
}

.stream-bit {
    width: 10px;
    height: 10px;
    background: #222;
    border-radius: 2px;
}
.stream-bit.success { background: var(--accent-green); }
.stream-bit.failure { background: var(--accent-red); }

@media (max-width: 600px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .academic-card {
        grid-column: span 1;
    }
}