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

:root {
    --bg-color: #030305;
    --bg-secondary: #0a0a0f;
    --bg-tertiary: #12121a;
    --text-main: #ffffff;
    --text-muted: #9494a8;
    --primary: #00eaff;
    --secondary: #ff00c8;
    --accent: #7000ff;
    --success: #00ff88;
    --error: #ff4757;
    --warning: #ffa502;
    --glass-bg: rgba(20, 20, 25, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --card-radius: 20px;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 30px 20px;
    background: var(--glass-bg);
    border-radius: var(--card-radius);
    border: 1px solid var(--glass-border);
    position: relative;
}

.back-link {
    position: absolute;
    top: 20px;
    left: 20px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--primary);
}

header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header h1 i {
    margin-right: 12px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Stopwatch Card */
.stopwatch-card {
    background: var(--glass-bg);
    border-radius: var(--card-radius);
    border: 1px solid var(--glass-border);
    padding: 40px 30px;
    margin-bottom: 25px;
    text-align: center;
}

/* Time Display */
.time-display {
    margin-bottom: 40px;
}

.time-main {
    font-family: 'JetBrains Mono', monospace;
    font-size: 4.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.time-main span:not(.separator) {
    background: linear-gradient(180deg, var(--text-main) 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-width: 1.3em;
    text-align: center;
}

.separator {
    color: var(--primary);
    animation: blink 1s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.time-ms {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 500;
    color: var(--primary);
    margin-top: 5px;
}

.running .separator {
    animation: none;
}

.running .time-ms {
    animation: pulse 0.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Controls */
.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 50px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    min-width: 130px;
}

.btn i {
    font-size: 1rem;
}

.btn-start {
    background: linear-gradient(135deg, var(--success), #00cc6a);
    color: #000;
}

.btn-start:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.btn-start.running {
    background: linear-gradient(135deg, var(--warning), #cc8400);
}

.btn-start.running:hover:not(:disabled) {
    box-shadow: 0 10px 30px rgba(255, 165, 2, 0.3);
}

.btn-lap {
    background: var(--bg-tertiary);
    color: var(--text-main);
    border-color: var(--glass-border);
}

.btn-lap:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-lap:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-reset {
    background: transparent;
    color: var(--error);
    border-color: rgba(255, 71, 87, 0.3);
}

.btn-reset:hover:not(:disabled) {
    background: rgba(255, 71, 87, 0.1);
    border-color: var(--error);
}

.btn-reset:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Laps Panel */
.laps-panel {
    background: var(--glass-bg);
    border-radius: var(--card-radius);
    border: 1px solid var(--glass-border);
    overflow: hidden;
}

.laps-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--glass-border);
}

.laps-header h2 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
}

.laps-header h2 i {
    margin-right: 8px;
    color: var(--primary);
}

.badge {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #000;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.laps-list {
    max-height: 300px;
    overflow-y: auto;
    padding: 10px;
}

.placeholder {
    color: var(--text-muted);
    opacity: 0.5;
    text-align: center;
    padding: 30px;
    font-size: 0.9rem;
}

/* Lap Item */
.lap-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    margin-bottom: 8px;
    animation: slideIn 0.3s ease;
}

.lap-item:last-child {
    margin-bottom: 0;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.lap-item.fastest {
    border-left: 3px solid var(--success);
}

.lap-item.slowest {
    border-left: 3px solid var(--error);
}

.lap-number {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.lap-item.fastest .lap-number {
    color: var(--success);
}

.lap-item.slowest .lap-number {
    color: var(--error);
}

.lap-times {
    display: flex;
    gap: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
}

.lap-time {
    color: var(--text-main);
}

.lap-diff {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.lap-item.fastest .lap-diff {
    color: var(--success);
}

.lap-item.slowest .lap-diff {
    color: var(--error);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
}

/* Responsive */
@media (max-width: 500px) {
    .container {
        padding: 15px;
    }

    header h1 {
        font-size: 1.8rem;
    }

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

    .time-ms {
        font-size: 1.5rem;
    }

    .btn {
        padding: 14px 24px;
        font-size: 0.9rem;
        min-width: 100px;
    }

    .controls {
        gap: 10px;
    }

    .lap-times {
        flex-direction: column;
        gap: 4px;
        text-align: right;
    }
}