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

:root {
    --gradient1-start: #ff00ff;
    --gradient1-mid: #00ffff;
    --gradient1-end: #ff00ff;
    
    --gradient2-start: #ff6b6b;
    --gradient2-mid: #ffd93d;
    --gradient2-end: #ff006e;
    
    --gradient3-start: #0066ff;
    --gradient3-mid: #00d4ff;
    --gradient3-end: #1a1aff;
    
    --gradient4-start: #ff3838;
    --gradient4-mid: #ff9d00;
    --gradient4-end: #00d4ff;
    
    --gradient5-start: #ff006e;
    --gradient5-mid: #8338ec;
    --gradient5-end: #3a86ff;
}

body {
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.container {
    width: 95%;
    max-width: 1400px;
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 2rem;
    padding: 2rem;
    z-index: 10;
}

/* Contrôles */
.controls {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.controls h2 {
    color: #fff;
    margin-bottom: 2rem;
    font-size: 1.5rem;
    text-align: center;
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group label {
    display: block;
    color: #fff;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
}

.control-group input[type="text"],
.control-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.control-group input[type="text"]:focus,
.control-group select:focus {
    outline: none;
    border-color: #00d4ff;
    background: rgba(255, 255, 255, 0.1);
}

.control-group input[type="range"] {
    width: calc(100% - 50px);
    margin-right: 10px;
}

.control-group #speedValue {
    color: #00d4ff;
    font-weight: bold;
}

.btn-primary,
.btn-secondary {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 0.75rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

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

.btn-download {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: #fff;
    margin-top: 0.5rem;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(56, 239, 125, 0.4);
}

.btn-download:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.divider {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 1.5rem 0;
}

.section-title {
    color: #fff;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    text-align: center;
}

.export-status {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 0.9rem;
    text-align: center;
    display: none;
}

.export-status.success {
    background: rgba(56, 239, 125, 0.2);
    color: #38ef7d;
    border: 1px solid rgba(56, 239, 125, 0.3);
    display: block;
}

.export-status.error {
    background: rgba(255, 107, 107, 0.2);
    color: #ff6b6b;
    border: 1px solid rgba(255, 107, 107, 0.3);
    display: block;
}

.export-status.loading {
    background: rgba(0, 212, 255, 0.2);
    color: #00d4ff;
    border: 1px solid rgba(0, 212, 255, 0.3);
    display: block;
}

/* Logo Container */
.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 3rem;
    min-height: 500px;
}

.logo {
    display: flex;
    gap: 0.5rem;
    perspective: 1000px;
    flex-wrap: wrap;
    justify-content: center;
}

.letter {
    font-size: 5rem;
    font-weight: 900;
    display: inline-block;
    transform-style: preserve-3d;
    cursor: pointer;
    position: relative;
    text-shadow: 
        0 0 10px rgba(255, 255, 255, 0.5),
        0 0 20px rgba(255, 255, 255, 0.3),
        0 0 30px rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.letter:hover {
    transform: scale(1.1) rotateY(10deg);
}

/* Palettes de couleurs */
.gradient1 { 
    background: linear-gradient(45deg, var(--gradient1-start), var(--gradient1-mid), var(--gradient1-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient2 { 
    background: linear-gradient(45deg, var(--gradient2-start), var(--gradient2-mid), var(--gradient2-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient3 { 
    background: linear-gradient(45deg, var(--gradient3-start), var(--gradient3-mid), var(--gradient3-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient4 { 
    background: linear-gradient(45deg, var(--gradient4-start), var(--gradient4-mid), var(--gradient4-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient5 { 
    background: linear-gradient(45deg, var(--gradient5-start), var(--gradient5-mid), var(--gradient5-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Animations 3D */
@keyframes wave {
    0%, 100% { transform: translateY(0) rotateX(0deg); }
    25% { transform: translateY(-30px) rotateX(15deg); }
    75% { transform: translateY(30px) rotateX(-15deg); }
}

@keyframes rotate {
    0% { transform: rotateY(0deg) rotateX(0deg); }
    50% { transform: rotateY(180deg) rotateX(180deg); }
    100% { transform: rotateY(360deg) rotateX(360deg); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0) scaleY(1); }
    50% { transform: translateY(-50px) scaleY(1.1); }
}

@keyframes flip {
    0% { transform: rotateY(0deg); }
    50% { transform: rotateY(180deg); }
    100% { transform: rotateY(360deg); }
}

@keyframes glow {
    0%, 100% { 
        filter: drop-shadow(0 0 5px currentColor);
        transform: scale(1);
    }
    50% { 
        filter: drop-shadow(0 0 30px currentColor);
        transform: scale(1.15);
    }
}

@keyframes split {
    0%, 100% { transform: translateX(0) rotateZ(0deg); }
    25% { transform: translateX(-30px) rotateZ(-15deg); }
    75% { transform: translateX(30px) rotateZ(15deg); }
}

.letter.wave {
    animation: wave 2s ease-in-out infinite;
}

.letter.rotate {
    animation: rotate 3s ease-in-out infinite;
}

.letter.bounce {
    animation: bounce 1.5s ease-in-out infinite;
}

.letter.flip {
    animation: flip 2s ease-in-out infinite;
}

.letter.glow {
    animation: glow 2s ease-in-out infinite;
}

.letter.split {
    animation: split 2s ease-in-out infinite;
}

/* Info */
.stage-info {
    margin-top: 3rem;
    padding: 1.5rem 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stage-info p {
    color: #fff;
    font-size: 1.1rem;
    text-align: center;
}

.stage-info span {
    color: #00d4ff;
    font-weight: bold;
}

/* Particules d'arrière-plan */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    filter: blur(50px);
    opacity: 0.3;
    animation: float 15s ease-in-out infinite;
}

.particle:nth-child(1) {
    background: #ff00ff;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    background: #00ffff;
    top: 60%;
    left: 80%;
    animation-delay: -5s;
}

.particle:nth-child(3) {
    background: #ff6b6b;
    top: 80%;
    left: 20%;
    animation-delay: -10s;
}

.particle:nth-child(4) {
    background: #ffd93d;
    top: 30%;
    left: 70%;
    animation-delay: -7s;
}

.particle:nth-child(5) {
    background: #00d4ff;
    top: 50%;
    left: 40%;
    animation-delay: -12s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(50px, -50px); }
    66% { transform: translate(-50px, 50px); }
}

/* Responsive */
@media (max-width: 1024px) {
    .container {
        grid-template-columns: 1fr;
    }
    
    .letter {
        font-size: 3.5rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .controls {
        padding: 1.5rem;
    }
    
    .letter {
        font-size: 2.5rem;
    }
    
    .logo-container {
        padding: 2rem 1rem;
        min-height: 350px;
    }
}