/* ============================================
   CHRONO-ZIC - Minimaliste Timer App
   ============================================ */

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Default Theme (Blue/Pink) */
    --primary: #00d9ff;
    --secondary: #ff006e;
    --accent: #8338ec;
    --bg: #1a1a2e;
    --surface: #252540;
    --text: #ffffff;
    --text-dim: #b4b4c8;
    --success: #06ffa5;
    --warning: #ffd60a;
    --danger: #ff006e;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;

    /* Animation */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --animation-scale: 1;
}

/* Color Themes */
[data-theme="dark"] {
    --bg: #0f0f1e;
    --surface: #1a1a2e;
}

[data-theme="light"] {
    --bg: #f0f0f5;
    --surface: #ffffff;
    --text: #1a1a2e;
    --text-dim: #666;
}

[data-color-theme="fire"] {
    --primary: #ff6b35;
    --secondary: #ff0054;
    --accent: #ffd60a;
}

[data-color-theme="ocean"] {
    --primary: #00b4d8;
    --secondary: #0096c7;
    --accent: #48cae4;
}

[data-color-theme="forest"] {
    --primary: #52b788;
    --secondary: #74c69d;
    --accent: #d8f3dc;
}

[data-color-theme="sunset"] {
    --primary: #bc4749;
    --secondary: #f2cc8f;
    --accent: #6a4c93;
}

/* Animation Intensity */
[data-animation="low"] {
    --animation-scale: 0.3;
    --transition: 0.15s ease;
}

[data-animation="high"] {
    --animation-scale: 1.5;
    --transition: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Body & Layout */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    touch-action: manipulation;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    background: var(--surface);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-actions {
    display: flex;
    gap: var(--space-sm);
}

/* Navigation */
nav {
    display: flex;
    gap: var(--space-xs);
    padding: var(--space-sm);
    background: var(--surface);
    overflow-x: auto;
    scrollbar-width: none;
}

nav::-webkit-scrollbar {
    display: none;
}

.nav-btn {
    padding: var(--space-xs) var(--space-md);
    border: none;
    background: transparent;
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    border-radius: 20px;
    transition: var(--transition);
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.nav-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.1);
}

/* Main */
main {
    padding: var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
}

/* Views */
.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Timer Display */
.timer-display {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-xl) 0;
}

.timer-circle {
    position: relative;
    width: 300px;
    height: 300px;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-bg {
    fill: none;
    stroke: var(--surface);
    stroke-width: 8;
}

.progress-ring-circle {
    fill: none;
    stroke: url(#gradient);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 880;
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 0.5s ease;
}

.timer-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 100%;
}

.interval-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.time-display {
    font-size: 4rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    line-height: 1;
    margin-bottom: var(--space-xs);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.interval-info {
    font-size: 1rem;
    color: var(--text-dim);
}

.cycle-info {
    font-size: 0.9rem;
    color: var(--accent);
    margin-top: var(--space-xs);
}

/* Global Progress Bar */
.global-progress {
    width: 100%;
    height: 6px;
    background: var(--surface);
    border-radius: 3px;
    overflow: hidden;
    margin: var(--space-md) 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 0;
    transition: width 0.3s ease;
}

/* Controls */
.controls {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin: var(--space-lg) 0;
}

/* Time Adjust */
.time-adjust {
    display: flex;
    gap: var(--space-xs);
    justify-content: center;
    margin: var(--space-md) 0;
}

.time-adjust button {
    padding: var(--space-xs) var(--space-sm);
    border: 2px solid var(--primary);
    background: transparent;
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.time-adjust button:hover {
    background: var(--primary);
    color: var(--bg);
    transform: scale(calc(1 + 0.05 * var(--animation-scale)));
}

/* Timer Configuration */
.timer-config {
    background: var(--surface);
    border-radius: 16px;
    padding: var(--space-lg);
    margin-top: var(--space-lg);
}

.timer-config h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

/* Form Groups */
.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-dim);
    margin-bottom: var(--space-xs);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-sm);
    border: 2px solid transparent;
    background: var(--bg);
    color: var(--text);
    font-size: 1rem;
    border-radius: 8px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group input[type="range"] {
    width: calc(100% - 60px);
    margin-right: var(--space-sm);
}

.form-group input[type="color"] {
    width: 60px;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.form-group.checkbox {
    display: flex;
    align-items: center;
    flex-direction: row-reverse;
    justify-content: flex-end;
}

.form-group.checkbox input {
    width: auto;
    margin-right: var(--space-sm);
}

.form-group.checkbox label {
    margin-bottom: 0;
}

/* Intervals List */
#intervalsList {
    margin: var(--space-md) 0;
}

.interval-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--bg);
    border-radius: 8px;
    margin-bottom: var(--space-xs);
    border-left: 4px solid var(--primary);
    transition: var(--transition);
}

.interval-item:hover {
    transform: translateX(4px);
}

.interval-color {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    flex-shrink: 0;
}

.interval-details {
    flex: 1;
}

.interval-details strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 2px;
}

.interval-details span {
    font-size: 0.9rem;
    color: var(--text-dim);
}

.interval-actions {
    display: flex;
    gap: var(--space-xs);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px) scale(calc(1 + 0.02 * var(--animation-scale)));
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 2px solid var(--primary);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-small {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.9rem;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* Presets */
.presets-actions {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.presets-list, .history-list {
    display: grid;
    gap: var(--space-sm);
}

.preset-card, .history-card {
    background: var(--surface);
    border-radius: 12px;
    padding: var(--space-md);
    border-left: 4px solid var(--primary);
    transition: var(--transition);
}

.preset-card:hover, .history-card:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.preset-card h3, .history-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--space-xs);
}

.preset-card p, .history-card p {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.preset-meta, .history-meta {
    display: flex;
    gap: var(--space-md);
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: var(--space-sm);
}

.preset-actions, .history-actions {
    display: flex;
    gap: var(--space-xs);
}

/* Settings */
.settings-group {
    background: var(--surface);
    border-radius: 12px;
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.settings-group h3 {
    font-size: 1.2rem;
    margin-bottom: var(--space-md);
    color: var(--primary);
}

/* Audio Library */
.audio-library {
    display: grid;
    gap: var(--space-xs);
}

.audio-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--bg);
    border-radius: 8px;
}

.audio-item-name {
    flex: 1;
    font-size: 0.9rem;
}

.audio-item-size {
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-md);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--surface);
    border-radius: 16px;
    padding: var(--space-lg);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.modal-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    pointer-events: none;
}

.toast {
    background: var(--surface);
    color: var(--text);
    padding: var(--space-sm) var(--space-md);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 250px;
    animation: slideUp 0.3s ease;
    pointer-events: auto;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

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

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.total-time {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-dim);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.total-time span {
    font-weight: 700;
    color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .timer-circle {
        width: 250px;
        height: 250px;
    }

    .time-display {
        font-size: 3rem;
    }

    .controls {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Fullscreen Mode */
.fullscreen .timer-display {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fullscreen .timer-config,
.fullscreen header,
.fullscreen nav {
    display: none;
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .controls, .btn, header, nav {
        display: none;
    }
}

/* Gradient Definition for SVG */
svg defs {
    display: none;
}