/* Flying Book Creator - Authentication Styles */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    position: relative;
    overflow-x: hidden;
}

/* Background Animation */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 118, 117, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(252, 176, 64, 0.3) 0%, transparent 50%);
    animation: backgroundFloat 20s ease-in-out infinite;
}

@keyframes backgroundFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-30px) rotate(1deg); }
    66% { transform: translateY(20px) rotate(-1deg); }
}

/* Main Container */
.auth-container {
    display: flex;
    max-width: 1200px;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

/* Auth Card */
.auth-card {
    flex: 1;
    padding: 3rem;
    max-width: 500px;
}

/* Header */
.auth-header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.logo i {
    font-size: 3rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.tagline {
    color: #64748b;
    font-size: 1.1rem;
    margin: 0;
    font-weight: 400;
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    animation: slideDown 0.3s ease-out;
}

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

.alert-error {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border: 1px solid #f87171;
    color: #dc2626;
}

.alert-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border: 1px solid #34d399;
    color: #059669;
}

.alert i {
    font-size: 1.25rem;
}

/* Forms Container */
.auth-forms {
    position: relative;
    min-height: 400px;
}

.auth-form {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.auth-form.active {
    opacity: 1;
    transform: translateX(0);
    pointer-events: all;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
    font-size: 0.95rem;
}

/* Input Groups */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group i {
    position: absolute;
    left: 1rem;
    color: #9ca3af;
    font-size: 1.1rem;
    z-index: 2;
    transition: color 0.3s ease;
}

.input-group input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    background: white;
    transition: all 0.3s ease;
    outline: none;
}

.input-group input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.input-group input:focus + .toggle-password,
.input-group input:focus ~ i {
    color: #667eea;
}

.input-group input::placeholder {
    color: #9ca3af;
}

/* Toggle Password Button */
.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    z-index: 2;
}

.toggle-password:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

/* Password Strength */
.password-strength {
    margin-top: 0.5rem;
}

.strength-bar {
    height: 4px;
    background: #e5e7eb;
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.25rem;
}

.strength-bar::after {
    content: '';
    display: block;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #ef4444, #f59e0b, #10b981);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.strength-text {
    font-size: 0.8rem;
    color: #6b7280;
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

/* Custom Checkbox */
.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #374151;
}

.checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid #d1d5db;
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox input[type="checkbox"]:checked + .checkmark {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: #667eea;
}

.checkbox input[type="checkbox"]:checked + .checkmark::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: translate(-50%, -60%) rotate(45deg);
}

.forgot-link {
    color: #667eea;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.forgot-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* Buttons */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
}

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

/* Auth Switch */
.auth-switch {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #e5e7eb;
}

.switch-btn {
    background: none;
    border: none;
    color: #667eea;
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.switch-btn:hover {
    color: #764ba2;
}

/* Features Section */
.auth-features {
    flex: 1;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    min-width: 400px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 16px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.95);
}

.feature i {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    color: white;
}

.feature:nth-child(1) i {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.feature:nth-child(2) i {
    background: linear-gradient(135deg, #06d6a0, #118ab2);
}

.feature:nth-child(3) i {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.feature h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 0.25rem 0;
}

.feature p {
    color: #64748b;
    margin: 0;
    line-height: 1.5;
}

/* Loading States */
.btn-primary.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-primary.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .auth-container {
        flex-direction: column;
    }
    
    .auth-features {
        min-width: auto;
        padding: 2rem;
    }
    
    .feature {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    .feature i {
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 768px) {
    body {
        padding: 0.5rem;
    }
    
    .auth-card {
        padding: 2rem 1.5rem;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .logo i {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .auth-features {
        padding: 1.5rem;
        gap: 1rem;
    }
    
    .feature {
        padding: 1rem;
    }
    
    .feature i {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .auth-card {
        padding: 1.5rem 1rem;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .auth-features {
        display: none;
    }
}

/* Animation d'entrée */
.auth-container {
    animation: fadeInUp 0.6s ease-out;
}

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

/* Focus visible pour l'accessibilité */
.btn:focus-visible,
.switch-btn:focus-visible,
.forgot-link:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.input-group input:focus-visible {
    outline: none;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #0066cc;
    }
    
    .auth-container {
        background: white;
        border: 2px solid #333;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}