:root {
    --bg-color: #0f1016;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #8a8d98;
    --accent-color: #3CD6FF;
    --accent-glow: rgba(60, 214, 255, 0.5);
    --danger-color: #ff4b4b;
    --success-color: #4CAF50;
    --panel-radius: 20px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

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

/* Dynamic Animated Background Gradient */
.background-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(60, 214, 255, 0.08) 0%, rgba(15, 16, 22, 0) 50%);
    animation: pulseGlow 15s infinite alternate ease-in-out;
    z-index: -1;
    pointer-events: none;
}

@keyframes pulseGlow {
    0% { transform: scale(1) translate(5%, 5%); }
    100% { transform: scale(1.1) translate(-5%, -5%); }
}

.container {
    width: 100%;
    max-width: 1000px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Glassmorphism Panels */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--panel-radius);
    padding: 25px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.connection-box {
    display: flex;
    gap: 10px;
}

input[type="text"] {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 10px 15px;
    border-radius: 8px;
    outline: none;
    font-size: 14px;
    min-width: 250px;
    transition: var(--transition);
}

input[type="text"]:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Buttons */
.btn {
    padding: 10px 18px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.primary-btn {
    background-color: var(--accent-color);
    color: #000;
}

.primary-btn:hover {
    background-color: #fff;
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-2px);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.accent-btn {
    background: rgba(60, 214, 255, 0.1);
    color: var(--accent-color);
    border: 1px solid rgba(60, 214, 255, 0.3);
}

.accent-btn:hover {
    background: rgba(60, 214, 255, 0.2);
    transform: translateY(-2px);
}

.danger-btn {
    background: rgba(255, 75, 75, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(255, 75, 75, 0.3);
}

.danger-btn:hover {
    background: rgba(255, 75, 75, 0.2);
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(1px);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    transition: opacity 0.4s;
}

.dashboard-grid.disabled {
    opacity: 0.3;
    pointer-events: none;
}

h2 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Status Panel */
.status-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.status-item {
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.status-item i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* Controls Panel */
.btn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
}

/* Time Tools Panel */
.timer-panel {
    grid-column: 1 / -1;
}

.timer-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.tool-box {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.tool-box h3 {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 15px;
}

.time-display {
    font-size: 4rem;
    font-weight: 900;
    font-variant-numeric: tabular-nums;
    margin-bottom: 20px;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

#sw-display {
    color: var(--success-color);
    text-shadow: 0 0 20px rgba(76, 175, 80, 0.2);
}

.btn-row {
    display: flex;
    gap: 10px;
}

/* Environment Panel */
.env-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.env-item {
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 12px;
    text-align: center;
}

.env-value {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.env-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Duration Input */
.duration-input-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 15px;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
}

.duration-input-box label {
    font-size: 12px;
    color: var(--text-secondary);
}

.duration-input-box input[type="number"] {
    background: transparent;
    border: none;
    color: var(--accent-color);
    font-size: 14px;
    font-weight: bold;
    width: 50px;
    outline: none;
    text-align: center;
}

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .timer-container {
        grid-template-columns: 1fr;
    }
    .header {
        flex-direction: column;
        align-items: stretch;
    }
    .connection-box {
        flex-direction: column;
    }
}