:root {
    --bg-color: #0b0c15;
    --surface-color: #141627;
    --primary-color: #00f3ff;
    --secondary-color: #bc13fe;
    --text-primary: #ffffff;
    --text-secondary: #8a92b2;
    --glow-primary: 0 0 15px rgba(0, 243, 255, 0.6);
    --glow-secondary: 0 0 15px rgba(188, 19, 254, 0.6);
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

.app-container {
    width: 100%;
    max-width: 480px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.app-header h1 {
    font-size: 1.5rem;
    letter-spacing: 4px;
    color: var(--primary-color);
    text-shadow: var(--glow-primary);
    margin-bottom: 0.5rem;
}

.timer-display {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: 24px;
    width: 100%;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(0, 243, 255, 0.1);
    border: 1px solid rgba(0, 243, 255, 0.2);
}

.time-text {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
    transition: all var(--transition-speed) ease;
}

.time-text.running {
    color: var(--primary-color);
    text-shadow: var(--glow-primary);
    animation: pulse 1s infinite alternate;
}

.status-text {
    margin-top: 0.5rem;
    font-size: 1rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    transition: all var(--transition-speed) ease;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.9; }
    100% { transform: scale(1.02); opacity: 1; }
}

.controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    width: 100%;
}

.control-btn {
    padding: 1.2rem 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 1px;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    touch-action: manipulation;
}

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

.primary {
    background: linear-gradient(135deg, var(--primary-color), #00a8ff);
    color: #000;
    box-shadow: 0 4px 15px rgba(0, 243, 255, 0.4);
}

.secondary {
    background: linear-gradient(135deg, var(--secondary-color), #8a00d4);
    color: #fff;
    box-shadow: 0 4px 15px rgba(188, 19, 254, 0.4);
}

.tertiary {
    background: transparent;
    border: 2px solid var(--text-secondary);
    color: var(--text-secondary);
}

.control-btn:hover:not(.tertiary) {
    filter: brightness(1.1);
}

.app-footer p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    opacity: 0.7;
    margin-top: 1rem;
}

/* Mobiloptimering */
@media (max-width: 380px) {
    .time-text { font-size: 2.8rem; }
    .control-btn { padding: 1rem 0.4rem; font-size: 0.9rem; }
}

@media (min-width: 768px) {
    .app-container { max-width: 520px; }
    .time-text { font-size: 4rem; }
}