/* ================================
   AUTH PAGES (Login/Register)
   Compatible con dark/light mode
   ================================ */

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #011620 0%, #161644 50%, #3a2174 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
    position: relative;
}

/* Animated Background */
.bg-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.bg-animation span {
    position: absolute;
    display: block;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.05);
    animation: animate 25s linear infinite;
    bottom: -150px;
}

.bg-animation span:nth-child(1) { left: 25%; width: 80px; height: 80px; animation-delay: 0s; }
.bg-animation span:nth-child(2) { left: 10%; width: 20px; height: 20px; animation-delay: 2s; animation-duration: 12s; }
.bg-animation span:nth-child(3) { left: 70%; width: 20px; height: 20px; animation-delay: 4s; }
.bg-animation span:nth-child(4) { left: 40%; width: 60px; height: 60px; animation-delay: 0s; animation-duration: 18s; }
.bg-animation span:nth-child(5) { left: 65%; width: 20px; height: 20px; animation-delay: 0s; }
.bg-animation span:nth-child(6) { left: 75%; width: 110px; height: 110px; animation-delay: 3s; }
.bg-animation span:nth-child(7) { left: 35%; width: 150px; height: 150px; animation-delay: 7s; }
.bg-animation span:nth-child(8) { left: 50%; width: 25px; height: 25px; animation-delay: 15s; animation-duration: 45s; }
.bg-animation span:nth-child(9) { left: 20%; width: 15px; height: 15px; animation-delay: 2s; animation-duration: 35s; }
.bg-animation span:nth-child(10) { left: 85%; width: 150px; height: 150px; animation-delay: 0s; animation-duration: 11s; }

@keyframes animate {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }
    100% {
        transform: translateY(-1000px) rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: var(--space-8);
    right: var(--space-8);
    z-index: 1000;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--text-on-primary);
    font-size: 20px;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1) rotate(15deg);
}

/* Container */
.auth-container {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 450px;
    position: relative;
    z-index: 1;
    overflow: hidden;
    animation: slideIn 0.6s ease-out;
    border: 1px solid var(--border);
}

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

.auth-header {
    background: var(--primary-gradient);
    padding: var(--space-10) var(--space-8);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.auth-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.logo-container {
    position: relative;
    z-index: 1;
    margin-bottom: var(--space-5);
}

.logo-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: var(--text-on-primary);
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

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

.auth-title {
    position: relative;
    z-index: 1;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-on-primary);
    margin: 0;
    letter-spacing: -0.5px;
}

.auth-subtitle {
    position: relative;
    z-index: 1;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: var(--space-2);
    font-weight: 400;
}

.auth-body {
    padding: var(--space-10) var(--space-8);
}

.form-group {
    margin-bottom: var(--space-6);
    position: relative;
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    font-size: 0.875rem;
}

.form-label i {
    color: var(--primary);
    font-size: 1rem;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.125rem;
    transition: var(--transition);
    pointer-events: none;
}

.form-input {
    width: 100%;
    padding: var(--space-4) var(--space-5) var(--space-4) 55px;
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 500;
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
}

.form-input:focus ~ .input-icon {
    color: var(--primary);
    transform: translateY(-50%) scale(1.1);
}

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
    gap: var(--space-2);
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.checkbox-wrapper input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.checkbox-wrapper label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.forgot-link:hover {
    color: var(--primary-darker);
    text-decoration: underline;
}

.btn-auth {
    width: 100%;
    padding: var(--space-4);
    background: var(--primary-gradient);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    box-shadow: 0 10px 25px rgba(14, 165, 233, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-auth::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.btn-auth:hover::before {
    left: 100%;
}

.btn-auth:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(14, 165, 233, 0.4);
}

.btn-auth:active {
    transform: translateY(0);
}

.btn-auth:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-auth i {
    font-size: 1.125rem;
}

.divider {
    position: relative;
    text-align: center;
    margin: var(--space-8) 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.divider span {
    position: relative;
    background: var(--bg-primary);
    padding: 0 var(--space-4);
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 600;
}

.auth-link-section {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border);
}

.auth-link-section p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--space-3);
}

.btn-secondary-auth {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-8);
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-secondary-auth:hover {
    background: var(--primary);
    color: var(--text-on-primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(14, 165, 233, 0.3);
}

.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    animation: slideInAlert 0.5s ease-out;
}

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

.alert i {
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 480px) {
    .auth-container {
        margin: var(--space-3);
    }

    .auth-header {
        padding: var(--space-8) var(--space-5);
    }

    .auth-body {
        padding: var(--space-8) var(--space-5);
    }

    .logo-icon {
        width: 70px;
        height: 70px;
        font-size: 35px;
    }

    .auth-title {
        font-size: 1.5rem;
    }

    .theme-toggle {
        top: var(--space-4);
        right: var(--space-4);
        width: 45px;
        height: 45px;
    }

    .remember-forgot {
        flex-direction: column;
        align-items: flex-start;
    }
}