:root {
    --bg-color: #0d0f14;
    --card-bg: rgba(26, 29, 39, 0.65);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f8f9fa;
    --text-secondary: #9ba1a6;
    --accent: #7c3aed; /* Deep purple */
    --accent-glow: rgba(124, 58, 237, 0.4);
    --secondary-accent: #38bdf8; /* Light blue */
    --success: #34d399;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

/* Background aesthetic orbs */
.background-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.orb-1 {
    top: -10%;
    left: -10%;
    width: 50vmin;
    height: 50vmin;
    background: var(--accent);
}

.orb-2 {
    bottom: -15%;
    right: -5%;
    width: 60vmin;
    height: 60vmin;
    background: #1e3a8a;
}

.orb-3 {
    top: 30%;
    left: 60%;
    width: 30vmin;
    height: 30vmin;
    background: var(--secondary-accent);
    opacity: 0.3;
}

.app-container {
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    z-index: 10;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Toggles */
.toggle-container {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    display: flex;
    padding: 4px;
    cursor: pointer;
}

.toggle-container span {
    padding: 6px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 16px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.toggle-container span.active {
    background: var(--card-border);
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.controls-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.tab-group {
    display: flex;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 12px;
    padding: 6px;
    border: 1px solid var(--card-border);
}

select option {
    background-color: var(--bg-color);
    color: var(--text-primary);
}

.tab {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.tab.active {
    background: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.action-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 24px;
    backdrop-filter: blur(16px);
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: 0 16px 32px rgba(0,0,0,0.2);
}

.select-wrapper {
    position: relative;
}

select {
    width: 100%;
    appearance: none;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 16px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    transition: border-color 0.3s;
}

select:focus {
    border-color: var(--accent);
}

.select-wrapper::after {
    content: '▼';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    color: var(--text-secondary);
    pointer-events: none;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.input-group label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    width: 100%;
    text-align: left;
}

input[type="time"], input[type="number"] {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 16px;
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="time"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
    opacity: 0.6;
}

input[type="time"]:focus, input[type="number"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Clock Dial Styles */
.clock-dial-container {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    width: 100%;
    margin-top: 20px;
}

.clock-dial {
    width: 280px;
    height: 280px;
    overflow: visible;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.5));
}

.horology-ring {
    fill: none;
    stroke: rgba(180, 160, 120, 0.4);
    stroke-width: 1px;
}

.horology-ring.outer {
    stroke-width: 2px;
    stroke: rgba(180, 160, 120, 0.8);
}

.horology-ring.center-ring {
    stroke-width: 1px;
    stroke-dasharray: 2 4;
}

.horology-pin {
    fill: rgba(180, 160, 120, 1);
    stroke: var(--bg-color);
    stroke-width: 1px;
}

.dial-path {
    fill: none;
    stroke: var(--accent);
    stroke-width: 12px;
    stroke-linecap: round;
    opacity: 0.6;
    transition: stroke-dasharray 0.1s ease;
}

.tick-line {
    stroke: rgba(180, 160, 120, 0.5);
    stroke-width: 1px;
}

.tick-line.major-hour {
    stroke: rgba(180, 160, 120, 0.9);
    stroke-width: 2px;
}

.horology-text {
    fill: rgba(180, 160, 120, 0.9);
    font-size: 8px;
    font-family: 'Georgia', 'Times New Roman', serif;
    letter-spacing: 0.5px;
}

.handle-group {
    cursor: grab;
}

.handle-group:active {
    cursor: grabbing;
}

.watch-hand {
    fill: rgba(180, 160, 120, 0.9);
    stroke: #000;
    stroke-width: 0.5px;
}

.watch-hand.sleep-hand {
    fill: var(--accent);
}

.watch-hand.wake-hand {
    fill: var(--success);
}

.hand-grip {
    fill: var(--bg-color);
    stroke: rgba(180, 160, 120, 0.9);
    stroke-width: 1.5px;
}

.hand-grip.sleep-grip {
    stroke: var(--accent);
}

.hand-grip.wake-grip {
    stroke: var(--success);
}

.dial-center-text {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none;
}

#dialDuration {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.dial-center-text small {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.visual-times-display {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: 24px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    border: 1px solid var(--card-border);
}

.time-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    width: 48%;
}

.time-block small {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
}

.time-block span {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 700;
}


.results-section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 24px;
    backdrop-filter: blur(16px);
    box-shadow: 0 16px 32px rgba(0,0,0,0.2);
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-secondary);
    text-align: center;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.result-item {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 16px;
    text-align: center;
    transition: border-color 0.3s, transform 0.3s;
}

.result-item:hover {
    border-color: var(--secondary-accent);
    transform: scale(1.02);
}

.result-item.optimal {
    border-color: var(--success);
    background: rgba(52, 211, 153, 0.05);
}

.result-item.optimal .result-time {
    color: var(--success);
}

.result-time {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

.insight-text {
    margin-top: 24px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.5;
}

.insight-text strong {
    color: var(--text-primary);
}

footer {
    text-align: center;
    margin-top: auto;
}

.doc-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s;
    border-bottom: 1px dashed var(--text-secondary);
}

.doc-link:hover {
    color: var(--text-primary);
    border-bottom-color: var(--text-primary);
}

.hidden {
    display: none !important;
}

@media (max-width: 480px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
}