/* Variables CSS - Thème sombre performance */
:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #141b3d;
    --bg-card: #1a2342;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --border-color: #2d3748;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.7);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding-bottom: 80px;
    overflow-x: hidden;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

/* Écrans */
.screen {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Titres */
.main-title {
    font-size: 2.5rem;
    font-weight: 900;
    text-align: center;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 30px;
}

.screen-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

/* Header avec prénom */
.app-header {
    text-align: center;
    margin-bottom: 40px;
}

.user-greeting {
    margin-top: 15px;
    font-size: 1.1rem;
    color: var(--accent-green);
    font-weight: 600;
}

/* Formulaires */
.profile-form, .try-form {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.auth-block {
    margin-bottom: 20px;
}

.auth-hint {
    margin-top: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
    text-align: center;
}

.auth-separator {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    color: var(--text-secondary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.8rem;
}

.auth-separator::before,
.auth-separator::after {
    content: '';
    height: 1px;
    flex: 1;
    background: var(--border-color);
}

.local-title {
    margin: 0 0 15px 0;
    text-align: center;
    color: var(--accent-purple);
    font-size: 1rem;
    font-weight: 800;
}

.auth-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.profile-form h2 {
    margin-bottom: 25px;
    text-align: center;
    color: var(--accent-blue);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="number"] {
    width: 100%;
    padding: 15px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.select-input {
    width: 100%;
    padding: 15px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.select-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.field-hint {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Slider pour répétitions */
.slider-container {
    margin-top: 10px;
}

.slider {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: var(--bg-secondary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    margin-bottom: 15px;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.5);
    transition: transform 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.5);
}

.slider-value {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.number-input {
    width: 80px;
    padding: 10px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
}

.percentage-info {
    text-align: center;
    margin: 20px 0;
}

.percentage-badge {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
    border-radius: 25px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

/* Boutons */
.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-blue);
}

.btn-large {
    padding: 20px 40px;
    font-size: 1.2rem;
    width: 100%;
    margin-bottom: 15px;
}

.btn-icon {
    font-size: 1.5rem;
}

/* Boutons accueil */
.home-buttons {
    margin-top: 50px;
}

/* Résultat */
.result-display {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    text-align: center;
}

.result-main {
    margin-bottom: 30px;
}

.result-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 10px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.result-title {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.result-value {
    font-size: 4.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 10px;
}

.result-details {
    background: var(--bg-secondary);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 20px;
    text-align: left;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-label {
    color: var(--text-secondary);
    font-weight: 600;
}

.detail-value {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.reliability-badge {
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
}

.reliability-high {
    background: var(--accent-green);
    color: white;
}

.reliability-medium {
    background: var(--accent-orange);
    color: white;
}

.reliability-low {
    background: var(--accent-red);
    color: white;
}

.reliability-message {
    padding: 15px;
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--accent-orange);
    border-radius: 8px;
    margin-bottom: 20px;
    color: var(--accent-orange);
    font-size: 0.9rem;
    display: none;
}

.reliability-message.show {
    display: block;
}

.result-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.result-actions .btn {
    flex: 1;
    min-width: 150px;
}

/* Mémoire des essais */
.memory-list {
    margin-top: 20px;
}

.memory-card {
    background: var(--bg-card);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.memory-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.memory-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.memory-card-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.memory-card-1rm {
    font-size: 2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.memory-card-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.memory-card-detail {
    color: var(--text-secondary);
}

.memory-card-detail strong {
    color: var(--text-primary);
}

.memory-card-zone {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 10px;
}

.zone-high {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
    border: 1px solid var(--accent-green);
}

.zone-medium {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-orange);
    border: 1px solid var(--accent-orange);
}

.zone-low {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
    border: 1px solid var(--accent-red);
}

.memory-card-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.memory-card-actions .btn {
    flex: 1;
    padding: 10px;
    font-size: 0.9rem;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

/* Navigation bas */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: 10px 0;
    box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.3);
    z-index: 1000;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 10px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
    border-radius: 10px;
}

.nav-btn.active {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

.nav-btn:hover {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

.nav-icon {
    font-size: 1.5rem;
}

.nav-label {
    font-size: 0.75rem;
    font-weight: 600;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 20px;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.modal-content h3 {
    margin-bottom: 20px;
    color: var(--accent-blue);
}

.modal-content input {
    width: 100%;
    padding: 15px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 20px;
}

.modal-actions {
    display: flex;
    gap: 10px;
}

.modal-actions .btn {
    flex: 1;
}

/* Responsive */
@media (max-width: 600px) {
    .main-title {
        font-size: 2rem;
    }
    
    .result-value {
        font-size: 3.5rem;
    }
    
    .memory-card-details {
        grid-template-columns: 1fr;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .result-actions .btn {
        width: 100%;
    }
}