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

:root {
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --orange-primary: #d45500;
    --orange-dark: #a34200;
    --orange-light: #ff6b1a;
    --orange-glow: rgba(212, 85, 0, 0.5);
    --text-light: #f0f0f0;
    --text-dim: #888888;
    --cyan: #00bcd4;
    --cyan-glow: rgba(0, 188, 212, 0.5);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    min-height: 100vh;
    overflow: hidden;
}

.container {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: radial-gradient(ellipse at center, #1a1a1a 0%, var(--bg-darker) 100%);
}

.screen {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 40px;
}

.screen.active {
    display: flex;
}

/* Start Screen */
h1 {
    font-size: 5rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--orange-primary);
    text-shadow: 0 0 60px var(--orange-glow), 0 0 120px var(--orange-glow);
    margin-bottom: 60px;
}

.settings {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
    margin-bottom: 50px;
    max-width: 900px;
}

.setting-group {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(212, 85, 0, 0.2);
    border-radius: 15px;
    padding: 25px;
    min-width: 250px;
}

.setting-group label {
    display: block;
    color: var(--text-dim);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 15px;
}

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

.btn-option {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid var(--orange-dark);
    background: transparent;
    color: var(--text-light);
    font-size: 1rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-option:hover {
    background: rgba(212, 85, 0, 0.2);
    border-color: var(--orange-primary);
}

.btn-option.active {
    background: var(--orange-primary);
    border-color: var(--orange-primary);
    color: white;
    box-shadow: 0 0 20px var(--orange-glow);
}

.btn-start {
    font-size: 2rem;
    font-weight: 700;
    padding: 25px 80px;
    background: linear-gradient(145deg, var(--orange-primary), var(--orange-dark));
    border: none;
    border-radius: 15px;
    color: white;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px var(--orange-glow);
}

.btn-start:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px var(--orange-glow);
    background: linear-gradient(145deg, var(--orange-light), var(--orange-primary));
}

/* Training Screen */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1400px;
    padding: 20px 40px;
    position: absolute;
    top: 20px;
}

.round-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

#round-label {
    font-size: 1rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

#round-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--orange-primary);
}

.timer {
    font-size: 5rem;
    font-weight: 900;
    font-variant-numeric: tabular-nums;
    color: var(--text-light);
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
}

/* Training Main Layout */
.training-main {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 80px;
    flex: 1;
    width: 100%;
    max-width: 1400px;
}

/* 3D Boxer Container */
.boxer-container {
    flex: 0 0 500px;
    height: 550px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    overflow: hidden;
    background: radial-gradient(ellipse at center bottom, #1a1a1a 0%, #0a0a0a 100%);
    box-shadow: 0 0 60px rgba(212, 85, 0, 0.3), inset 0 0 60px rgba(0, 0, 0, 0.5);
}

/* 3D Canvas styles */
.boxer-container canvas {
    display: block;
}

/* Command Panel */
.command-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.command {
    font-size: 10rem;
    font-weight: 900;
    color: var(--orange-primary);
    text-shadow: 0 0 80px var(--orange-glow), 0 0 150px var(--orange-glow);
    animation: pulse 0.15s ease-out;
    text-align: center;
    line-height: 1;
}

.combo-display {
    font-size: 2.5rem;
    color: var(--text-dim);
    margin-top: 20px;
    letter-spacing: 0.2em;
    min-height: 3.5rem;
}

.punch-name {
    font-size: 4rem;
    font-weight: 700;
    color: var(--orange-light);
    margin-top: 20px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    min-height: 5rem;
}

@keyframes pulse {
    0% {
        transform: scale(1.2);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.command.defense {
    color: var(--cyan);
    text-shadow: 0 0 80px var(--cyan-glow), 0 0 150px var(--cyan-glow);
}

.punch-name.defense {
    color: var(--cyan);
}

.stats {
    display: flex;
    gap: 80px;
    position: absolute;
    bottom: 120px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--orange-primary);
}

.controls {
    display: flex;
    gap: 20px;
    position: absolute;
    bottom: 40px;
}

.btn-control {
    padding: 15px 40px;
    font-size: 1.2rem;
    font-weight: 600;
    border: 2px solid var(--orange-primary);
    background: transparent;
    color: var(--text-light);
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.btn-control:hover {
    background: var(--orange-primary);
    box-shadow: 0 0 20px var(--orange-glow);
}

.btn-stop {
    border-color: #ff3333;
}

.btn-stop:hover {
    background: #ff3333;
    box-shadow: 0 0 20px rgba(255, 51, 51, 0.5);
}

/* Rest Screen */
#rest-screen h2 {
    font-size: 4rem;
    color: var(--text-dim);
    margin-bottom: 40px;
    letter-spacing: 0.3em;
}

.rest-timer {
    font-size: 15rem;
    color: var(--orange-primary);
    text-shadow: 0 0 100px var(--orange-glow);
}

#rest-screen p {
    font-size: 2rem;
    color: var(--text-dim);
    margin-top: 40px;
}

#next-round {
    color: var(--orange-primary);
    font-weight: 700;
}

/* Finish Screen */
#finish-screen h1 {
    font-size: 3.5rem;
    margin-bottom: 80px;
}

.final-stats {
    display: flex;
    gap: 100px;
    margin-bottom: 60px;
}

.final-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(212, 85, 0, 0.1);
    border: 2px solid var(--orange-dark);
    border-radius: 20px;
    padding: 40px 60px;
}

.final-stat-value {
    font-size: 5rem;
    font-weight: 900;
    color: var(--orange-primary);
}

.final-stat-label {
    font-size: 1.2rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-top: 10px;
}

/* Responsive */
@media (max-width: 1200px) {
    h1 {
        font-size: 3rem;
    }

    .training-main {
        flex-direction: column;
        gap: 20px;
    }

    .boxer-container {
        flex: 0 0 350px;
        height: 400px;
    }

    .command {
        font-size: 6rem;
    }

    .punch-name {
        font-size: 2.5rem;
    }

    .timer {
        font-size: 3rem;
    }

    .rest-timer {
        font-size: 10rem;
    }
}

@media (max-width: 768px) {
    .settings {
        flex-direction: column;
    }

    .boxer-container {
        flex: 0 0 250px;
        height: 300px;
    }

    .command {
        font-size: 4rem;
    }

    .combo-display {
        font-size: 1.5rem;
    }

    .punch-name {
        font-size: 2rem;
    }

    .final-stats {
        flex-direction: column;
        gap: 30px;
    }
}