@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;600;700&display=swap');

/* Variables CSS */
:root {
    --primary-color: #3f51b5;
    --secondary-color: #2196f3;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #4caf50 0%, #45a049 100%);
    --gradient-info: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
    --gradient-warning: linear-gradient(135deg, #ff9800 0%, #f57c00 100%);
    --shadow-soft: 0 10px 35px rgba(0, 0, 0, 0.07);
    --shadow-hover: 0 18px 45px rgba(0, 0, 0, 0.1);
    --border-radius: 20px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset et styles de base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
    line-height: 1.8;
    background: var(--gradient-primary) !important;
    min-height: 100vh;
    padding: 5px !important;
    font-size: 16px;
    color: #333;
}

/* Conteneur principal */
.container {
    max-width: 1200px !important;
    margin: 0 auto !important;
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(15px) !important;
    border-radius: var(--border-radius) !important;
    padding: 40px !important;
    box-shadow: var(--shadow-soft) !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    position: relative;
    overflow: hidden;
    animation: slideInUp 0.8s ease-out;
}

@keyframes slideInUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* En-tête */
h1 {
    color: var(--primary-color) !important;
    font-size: 2.5em !important;
    font-weight: 700 !important;
    margin-bottom: 40px !important;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.05) !important;
    text-align: center;
    background: unset !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: unset !important;
    background-clip: unset !important;
}

h1::before {
    content: '' !important;
    display: none !important;
}

/* Conteneur d'exercice */
.exercise-container {
    background: #fff !important;
    border-radius: var(--border-radius) !important;
    padding: 30px !important;
    margin-bottom: 30px !important;
    box-shadow: var(--shadow-soft) !important;
    border: 1px solid #e0e0e0 !important;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.exercise-container:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

/* Contenu d'exercice */
.exercise-content {
    font-size: 0.8em;
}

/* Conteneur mathématique */
.math-container {
    padding: 30px 20px;
    margin: 15px 0;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 15px;
    border: 2px solid rgba(102, 126, 234, 0.1);
}

/* Expression mathématique */
.expression {
    color: #34495e !important;
    line-height: 2.2 !important;
    margin: 25px 0 !important;
    font-size: 2em !important;
    text-align: center !important;
    direction: ltr !important;
    background: rgba(102, 126, 234, 0.05) !important;
    padding: 25px !important;
    border-radius: 15px !important;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1) !important;
    border: 2px solid rgba(102, 126, 234, 0.1) !important;
}

/* Zone de saisie */
.input-zone {
    margin: 40px 0 !important;
    position: relative;
}

.input-zone label {
    display: block;
    font-size: 1.2em !important;
    color: var(--primary-color) !important;
    margin-bottom: 20px !important;
    font-weight: 600 !important;
    text-align: center;
    background: unset !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: unset !important;
    background-clip: unset !important;
    text-shadow: none !important;
}

input[type="text"] {
    font-family: 'Cairo', sans-serif !important;
    padding: 15px 25px !important;
    font-size: 1.2em !important;
    width: 200px !important;
    margin: 20px auto !important;
    border: 3px solid transparent !important;
    border-radius: 50px !important;
    text-align: center !important;
    transition: var(--transition) !important;
    direction: ltr !important;
    background: linear-gradient(135deg, #ffffff, #f8f9fa) !important;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1) !important;
    font-weight: 600 !important;
    display: block !important;
}

input[type="text"]:focus {
    outline: none !important;
    border: 3px solid var(--primary-color) !important;
    box-shadow: 0 0 25px rgba(63, 81, 181, 0.3) !important;
    transform: scale(1.05) !important;
    background: #ffffff !important;
}

/* Boutons */
.button-grid {
    display: flex !important;
    gap: 15px !important;
    margin: 25px 0 !important;
    flex-wrap: wrap !important;
    align-items: center !important;
    justify-content: center !important;
}

button {
    font-family: 'Cairo', sans-serif !important;
    border: none !important;
    padding: 12px 24px !important;
    border-radius: 50px !important;
    cursor: pointer !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    transition: var(--transition) !important;
    position: relative !important;
    overflow: hidden !important;
    text-transform: none !important;
    min-width: 140px !important;
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    justify-content: center !important;
    letter-spacing: normal !important;
}

button:disabled {
    opacity: 0.6 !important;
    cursor: not-allowed !important;
    transform: none !important;
}

button:not(:disabled):hover {
    transform: translateY(-3px) !important;
}

button::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: -100% !important;
    width: 100% !important;
    height: 100% !important;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent) !important;
    transition: left 0.7s !important;
}

button:hover::before {
    left: 100% !important;
}

#checkBtn {
    background: var(--gradient-success) !important;
    color: #fff !important;
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.3) !important;
}

#correctBtn {
    background: var(--gradient-warning) !important;
    color: #fff !important;
    box-shadow: 0 6px 20px rgba(255, 152, 0, 0.3) !important;
}

#nextBtn {
    background: var(--gradient-info) !important;
    color: #fff !important;
    box-shadow: 0 6px 20px rgba(23, 162, 184, 0.3) !important;
}

/* Messages de résultat */
#result {
    margin: 20px 0 !important;
    padding: 25px !important;
    border-radius: 15px !important;
    position: relative !important;
    overflow: hidden !important;
    animation: fadeInSlide 0.6s ease-out !important;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1) !important;
    font-size: 1.2em !important;
    font-weight: 600 !important;
    text-align: center !important;
    text-shadow: none !important;
}

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

.success-message {
    background: linear-gradient(135deg, #e8f5e8 0%, #d4edda 100%) !important;
    border: 1px solid #c3e6cb !important;
    color: #155724 !important;
}

.error-message {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%) !important;
    border: 1px solid #f5c6cb !important;
    color: #721c24 !important;
}

/* Section de correction */
#correction {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%) !important;
    border: 1px solid #faebcc !important;
    color: #856404 !important;
    margin: 20px 0 !important;
    padding: 25px !important;
    border-radius: 15px !important;
    position: relative !important;
    overflow: hidden !important;
    animation: fadeInSlide 0.6s ease-out !important;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1) !important;
    font-size: 1.1em !important;
    text-align: center !important;
}

/* Guide complet */
.comprehensive-guide {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%) !important;
    border: 1px solid #b8daff !important;
    color: #0c5460 !important;
    margin: 30px 0 !important;
    padding: 30px !important;
    border-radius: var(--border-radius) !important;
    animation: slideInUp 0.8s ease-out !important;
    box-shadow: var(--shadow-soft) !important;
}

.comprehensive-guide h3 {
    color: #138496 !important;
    margin-bottom: 25px !important;
    font-size: 1.5em !important;
    text-align: center !important;
    font-weight: 700 !important;
    background: unset !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: unset !important;
    background-clip: unset !important;
    text-shadow: none !important;
}

.guide-section {
    margin: 25px 0 !important;
    padding: 20px !important;
    background: rgba(255, 255, 255, 0.9) !important;
    border-radius: 10px !important;
    border-right: 4px solid var(--info-color) !important;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1) !important;
    transition: transform 0.3s ease !important;
}

.guide-section:hover {
    transform: translateX(-3px) !important;
}

.rule-highlight {
    background: linear-gradient(135deg, #f3e5f5 0%, #e1bee7 100%) !important;
    border: 2px solid #ce93d8 !important;
    border-radius: 15px !important;
    padding: 25px !important;
    margin: 30px 0 !important;
    text-align: center !important;
    box-shadow: 0 10px 25px rgba(206, 147, 216, 0.3) !important;
}

.rule-highlight strong {
    color: #4a148c !important;
    font-size: 1.2em !important;
}

/* Réglages pour les icônes */
.icon {
    margin-left: 8px !important;
    color: inherit !important;
    filter: none !important;
}

/* Effets de pulsation */
.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(63, 81, 181, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(63, 81, 181, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(63, 81, 181, 0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 5px !important;
    }
    
    .container {
        padding: 0px 0px !important;
        margin: 3px !important;
    }
    
    .exercise-container {
        padding: 0px 0px !important;
        margin: 3px !important;
    }
    
    .math-container {
        padding: 0px 0px !important;
        margin: 3px !important;
    }
    
    .input-zone {
        margin: 10px 0 !important;
        padding: 0px 5px !important;
    }
    
    .comprehensive-guide {
        padding: 0px 10px !important;
        margin: 5px 0 !important;
    }
    
    .guide-section {
        padding: 0px 5px !important;
        margin: 5px 0 !important;
    }
    
    #result, #correction {
        padding: 0px 10px !important;
        margin: 5px 0 !important;
    }
    
    .exercise-content {
        font-size: 0.8em;
    }
    
    h1 {
        font-size: 2em !important;
        margin-bottom: 20px !important;
    }
    
    .button-grid {
        flex-direction: column !important;
    }
    
    button {
        width: 100% !important;
        max-width: 280px !important;
    }
    
    input[type="text"] {
        width: 160px !important;
    }
    
    .expression {
        font-size: 1.8em !important;
        padding: 0px 10px !important;
    }
}