/**
 * Frequency Relax - Login/Register Screen Styles
 */

/* ============================================
   Auth Container
   ============================================ */
.auth-container {
    width: 100%;
    max-width: 500px;
    animation: slideUp 0.6s ease-out;
}

/* ============================================
   Logo Section
   ============================================ */
.logo {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.logo h1 {
    font-size: 2.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    animation: pulse 2s ease-in-out infinite;
}

.logo .tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 300;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(0.98);
    }
}

/* ============================================
   Auth Card
   ============================================ */
.auth-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-medium);
}

.auth-card h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.75rem;
}

.auth-card .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   Form Elements
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.5px;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: all var(--transition-normal);
}

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

.form-group input:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-teal);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(93, 226, 163, 0.2);
}

.form-group input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-group small {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: var(--spacing-xs);
}

/* License code input styling */
#license-code {
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 500;
    text-align: center;
}

/* ============================================
   Form Validation States
   ============================================ */
.form-group input:invalid:not(:placeholder-shown) {
    border-color: var(--error);
}

.form-group input:valid:not(:placeholder-shown) {
    border-color: var(--success);
}

.form-group input:invalid:not(:placeholder-shown) + small {
    color: var(--error);
}

.form-group input:valid:not(:placeholder-shown) + small {
    color: var(--success);
}

/* ============================================
   Submit Button
   ============================================ */
#register-form .btn-primary {
    width: 100%;
    padding: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
    position: relative;
}

#register-btn span {
    position: relative;
    z-index: 1;
}

#register-btn:disabled span {
    opacity: 0;
}

/* Button loader */
.btn-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================================
   Error Message
   ============================================ */
#auth-error {
    background: rgba(255, 107, 107, 0.15);
    border: 1px solid var(--error);
    border-left: 4px solid var(--error);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--error);
    font-size: 0.9rem;
    margin: var(--spacing-md) 0;
    display: flex;
    align-items: center;
    animation: slideDown 0.3s ease-out;
}

#auth-error::before {
    content: '⚠️';
    margin-right: var(--spacing-sm);
    font-size: 1.2rem;
}

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

/* ============================================
   Input Focus Effects
   ============================================ */
.form-group {
    position: relative;
}

.form-group input:focus + .input-glow {
    opacity: 1;
}

.input-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-sm);
    background: var(--accent-gradient);
    opacity: 0;
    filter: blur(20px);
    transition: opacity var(--transition-normal);
    pointer-events: none;
    z-index: -1;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .auth-container {
        max-width: 100%;
    }

    .auth-card {
        padding: var(--spacing-lg);
    }

    .logo h1 {
        font-size: 2rem;
    }

    .auth-card h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .auth-card {
        padding: var(--spacing-md);
    }

    .form-group input {
        padding: 12px 16px;
        font-size: 0.95rem;
    }

    #license-code {
        letter-spacing: 1px;
        font-size: 0.9rem;
    }

    #register-form .btn-primary {
        padding: 14px;
        font-size: 1rem;
    }
}

/* ============================================
   Loading State
   ============================================ */
.auth-card.loading {
    pointer-events: none;
    opacity: 0.7;
}

.auth-card.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-glass);
    border-top-color: var(--accent-teal);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ============================================
   Success State
   ============================================ */
.auth-card.success {
    animation: successPulse 0.6s ease-out;
}

@keyframes successPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ============================================
   Accessibility Enhancements
   ============================================ */
.form-group input[aria-invalid="true"] {
    border-color: var(--error);
    animation: shake 0.5s;
}

.form-group input[aria-invalid="false"] {
    border-color: var(--success);
}

/* Screen reader announcements */
.sr-announcement {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}