/* Metronome Hero Web - Styles */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #14141f;
    --bg-tertiary: #1e1e2e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --accent: #4a9eff;
    --accent-glow: rgba(74, 158, 255, 0.3);

    /* Rating colors */
    --color-perfect: #22c55e;
    --color-okay-early: #eab308;
    --color-okay-late: #3b82f6;
    --color-early: #f97316;
    --color-late: #6366f1;
    --color-very-early: #ef4444;
    --color-very-late: #a855f7;

    /* Zone colors (semi-transparent) */
    --zone-pocket: rgba(34, 197, 94, 0.2);
    --zone-okay: rgba(234, 179, 8, 0.15);
    --zone-off: rgba(239, 68, 68, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

/* Nav */
nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--bg-tertiary);
    padding: 0.75rem 1rem;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

.nav-brand img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a.nav-demo {
    background: linear-gradient(135deg, var(--accent), #6366f1);
    color: white;
    padding: 0.35rem 0.9rem;
    border-radius: 6px;
    font-weight: 600;
}

.nav-links a.nav-demo:hover {
    color: white;
    opacity: 0.9;
}

#tempo-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-secondary);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
}

#tempo-value {
    font-size: 2rem;
    font-weight: 700;
    min-width: 3ch;
    text-align: center;
}

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

.tempo-btn {
    width: 2rem;
    height: 2rem;
    border: none;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: background 0.2s;
}

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

/* Main content */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem 0;
}

/* Visualization */
#visualization-container {
    position: relative;
    flex: 1;
    min-height: 300px;
    background: var(--bg-secondary);
    border-radius: 1rem;
    overflow: hidden;
}

#viz-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

#stats-overlay {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 1rem;
}

#streak-display, #accuracy-display {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    text-align: center;
}

#stats-overlay .label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#streak-value, #accuracy-value {
    font-size: 1.5rem;
    font-weight: 700;
}

#streak-value {
    color: var(--color-perfect);
}

/* Controls */
#controls {
    display: flex;
    justify-content: center;
    padding: 1rem 0;
}

.primary-btn {
    width: 5rem;
    height: 5rem;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #6366f1);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.primary-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 30px var(--accent-glow);
}

.primary-btn:active {
    transform: scale(0.95);
}

#play-btn .stop-icon {
    display: none;
}

#play-btn.playing .play-icon {
    display: none;
}

#play-btn.playing .stop-icon {
    display: inline;
}

/* Settings Panel */
#settings-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 1rem;
}

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

.setting-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.setting-group select,
.setting-group input[type="range"] {
    width: 100%;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
}

.setting-group select:focus {
    border-color: var(--accent);
    outline: none;
}

#input-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    accent-color: var(--accent);
}

.hidden {
    display: none !important;
}

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--bg-tertiary);
    margin-top: 1rem;
}

.footer-tagline {
    margin-bottom: 1rem;
}

.app-promo {
    background: var(--bg-secondary);
    border-radius: 1rem;
    padding: 1.5rem;
    max-width: 500px;
    margin: 0 auto;
}

.app-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.app-link:hover {
    text-decoration: underline;
}

.feature-list {
    list-style: none;
    text-align: left;
    margin-top: 1rem;
    display: grid;
    gap: 0.5rem;
}

.feature-list li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-primary);
    font-size: 0.8125rem;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-perfect);
    font-weight: bold;
}

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

footer a:hover {
    text-decoration: underline;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 1rem;
    max-width: 400px;
    text-align: center;
}

.modal-content h2 {
    margin-bottom: 1rem;
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-content button {
    margin: 0 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    cursor: pointer;
}

.secondary-btn {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Range slider styling */
input[type="range"] {
    -webkit-appearance: none;
    height: 0.5rem;
    border-radius: 0.25rem;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
}

/* Responsive */
@media (max-width: 600px) {
    header {
        flex-direction: column;
        gap: 1rem;
    }

    #settings-panel {
        grid-template-columns: 1fr;
    }

    #visualization-container {
        min-height: 250px;
    }
}

/* Animation for hits */
@keyframes hitPulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.hit-pulse {
    animation: hitPulse 0.3s ease-out forwards;
}

/* Level up flash */
@keyframes levelUp {
    0% { background: var(--color-perfect); }
    100% { background: transparent; }
}

.level-up-flash {
    animation: levelUp 0.5s ease-out;
}