:root {
    --bg-color: #f7f9f7;
    --text-main: #2c3e38;
    --text-muted: #5e6d68;
    --primary: #4a7c64;
    --primary-hover: #3a624f;
    --surface: #ffffff;
    --border: #e0e5e2;
    --radius-lg: 12px;
    --radius-sm: 6px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Component */
.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    margin-bottom: 40px;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.site-header h1 {
    font-size: 1.5rem;
    color: var(--primary);
}

.site-header nav a {
    margin-left: 20px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
}

.site-header nav a:hover {
    color: var(--primary);
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 40px;
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.hero p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* App layout */
.app-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 60px;
}

@media(max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }
}

.app-panel, .result-panel {
    background: var(--surface);
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.step {
    margin-bottom: 30px;
}

.step h3, .result-panel h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    border-bottom: 2px solid var(--bg-color);
    padding-bottom: 8px;
}

.task-options, .time-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.task-btn, .time-btn {
    padding: 10px 16px;
    background: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.task-btn:hover, .time-btn:hover {
    border-color: var(--primary);
}

.task-btn.active, .time-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.empty-state {
    color: var(--text-muted);
    font-style: italic;
    padding: 20px 0;
}

.suggestion-content h4 {
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.suggestion-content p {
    margin-bottom: 15px;
}

.timer-section {
    margin-top: 25px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.timer-display {
    font-size: 3rem;
    font-variant-numeric: tabular-nums;
    font-weight: bold;
    color: var(--text-main);
    margin-bottom: 15px;
}

.action-btn {
    padding: 10px 20px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    cursor: pointer;
}

.action-btn.secondary {
    background: var(--border);
    color: var(--text-main);
    margin-left: 10px;
}

.hidden {
    display: none;
}

/* Supporting Content */
.content-section, .faqs-section {
    margin-bottom: 50px;
}

.content-section h2, .faqs-section h2 {
    margin-bottom: 20px;
    font-size: 1.6rem;
}

.content-section p {
    margin-bottom: 15px;
}

.fatigue-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.fatigue-card {
    background: var(--surface);
    padding: 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.fatigue-card h4 {
    margin-bottom: 10px;
    color: var(--primary);
}

.fatigue-card p {
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.faq-item {
    margin-bottom: 20px;
    background: var(--surface);
    padding: 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.faq-item h4 {
    margin-bottom: 8px;
}

.site-footer {
    background: var(--surface);
    padding: 40px 0;
    margin-top: 60px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.site-footer nav {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.site-footer nav a {
    color: var(--primary);
    text-decoration: none;
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}