:root {
    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --border-color: #cbd5e1;
    --accent-color: #0284c7;
    --accent-hover: #0369a1;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --success-color: #10b981;
    --radius: 8px;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-stack);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Header */
.site-header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.brand h1 {
    font-size: 1.5rem;
    margin: 0;
}

.tagline {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.site-header nav {
    display: flex;
    gap: 1.5rem;
}

/* Hero */
.hero-section {
    padding: 3rem 0 2rem;
}

.hero-section p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
}

/* Layout */
.app-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

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

/* Controls */
.controls-panel {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

input[type="number"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
}

.help-text {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal;
    cursor: pointer;
}

.primary-btn {
    display: block;
    width: 100%;
    padding: 0.875rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

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

.quick-presets {
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.preset-btn {
    display: block;
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.preset-btn:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

/* Results */
.results-panel {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.task-list {
    list-style: none;
    margin-top: 1.5rem;
}

.task-item {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.task-item.urgent { border-left: 4px solid var(--danger-color); }
.task-item.soon { border-left: 4px solid var(--warning-color); }
.task-item.later { border-left: 4px solid var(--success-color); }

.task-info h4 {
    margin: 0 0 0.25rem 0;
}

.task-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

.task-time {
    font-weight: 600;
    background: var(--bg-color);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
}

/* Content */
.supporting-content {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

@media (max-width: 600px) {
    .info-grid {
        grid-template-columns: 1fr;
    }
}

.info-card {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.info-card ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.faq-block {
    background: #f1f5f9;
    padding: 1.5rem;
    border-radius: var(--radius);
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 3rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.site-footer nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1rem 0;
}

.version-note {
    font-size: 0.875rem;
}


/* 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;
}