/* Glass Optimizer - Authentication Styles */

/* Auth Body */
.auth-body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: linear-gradient(
        135deg,
        var(--primary-color) 0%,
        var(--primary-dark) 100%
    );
    font-family: var(--font-family);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
}

/* Background Pattern */
.auth-body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(
            circle at 25% 25%,
            rgba(255, 255, 255, 0.1) 0%,
            transparent 50%
        ),
        radial-gradient(
            circle at 75% 75%,
            rgba(255, 255, 255, 0.05) 0%,
            transparent 50%
        );
    background-size:
        100px 100px,
        150px 150px;
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

/* Auth Container */
.auth-container {
    width: 100%;
    max-width: 450px;
    margin: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

/* Auth Card */
.auth-card {
    background: var(--surface-color);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xxl);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.auth-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(
        90deg,
        var(--primary-color),
        var(--secondary-color)
    );
}

/* Auth Header */
.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.auth-logo img {
    border-radius: var(--border-radius-sm);
    object-fit: contain;
}

.auth-logo h1 {
    margin: 0;
    font-size: var(--font-size-xxl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--secondary-color)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-subtitle {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-normal);
}

/* Auth Toggle */
.auth-toggle {
    display: flex;
    background: var(--surface-variant);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xs);
    margin-bottom: var(--spacing-xxl);
    position: relative;
}

.toggle-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: transparent;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    z-index: 1;
}

.toggle-btn.active {
    color: var(--text-on-primary);
    background: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.toggle-btn:hover:not(.active) {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.05);
}

.toggle-btn .material-icons {
    font-size: 20px;
}

/* Auth Forms */
.auth-form {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.auth-form.active {
    display: block;
}

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

.auth-form h2 {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-align: center;
}

.auth-form p {
    margin: 0 0 var(--spacing-xl) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
    line-height: var(--line-height-normal);
}

/* Form Elements */
.form-row {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 48px;
    border: var(--border-width-thin) solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-md);
    font-family: var(--font-family);
    color: var(--text-primary);
    background: var(--surface-color);
    transition: all var(--transition-normal);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

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

.input-group .material-icons {
    position: absolute;
    left: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 20px;
    pointer-events: none;
    z-index: 1;
}

.password-toggle {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    min-height: 40px;
}

.password-toggle:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.05);
}

.password-toggle .material-icons {
    font-size: 20px;
    pointer-events: none;
}

/* Password Strength Indicator */
.password-strength {
    margin-top: var(--spacing-sm);
}

.strength-meter {
    height: 4px;
    background: var(--surface-variant);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.strength-bar {
    height: 100%;
    width: 0%;
    background: var(--error-color);
    transition: all var(--transition-normal);
    border-radius: var(--border-radius-full);
}

.strength-bar.weak {
    width: 25%;
    background: var(--error-color);
}

.strength-bar.fair {
    width: 50%;
    background: var(--warning-color);
}

.strength-bar.good {
    width: 75%;
    background: var(--info-color);
}

.strength-bar.strong {
    width: 100%;
    background: var(--success-color);
}

.strength-text {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Checkbox */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    position: relative;
}

.checkbox-wrapper input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    width: 0;
    height: 0;
}

.checkmark {
    height: 20px;
    width: 20px;
    background: var(--surface-color);
    border: var(--border-width-medium) solid var(--border-color);
    border-radius: var(--border-radius-sm);
    margin-right: var(--spacing-sm);
    position: relative;
    transition: all var(--transition-fast);
}

.checkbox-wrapper:hover input ~ .checkmark {
    border-color: var(--primary-color);
}

.checkbox-wrapper input:checked ~ .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-wrapper input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-wrapper a {
    color: var(--primary-color);
    text-decoration: none;
}

.checkbox-wrapper a:hover {
    text-decoration: underline;
}

/* Forgot Link */
.forgot-link {
    font-size: var(--font-size-sm);
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Auth Button */
.auth-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.auth-btn.primary {
    background: var(--primary-color);
    color: var(--text-on-primary);
    box-shadow: var(--shadow-md);
}

.auth-btn.primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.auth-btn.primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.auth-btn:disabled {
    background: var(--text-hint);
    color: var(--surface-color);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.auth-btn .material-icons {
    font-size: 20px;
}

/* Auth Divider */
.auth-divider {
    position: relative;
    text-align: center;
    margin: var(--spacing-xl) 0;
}

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

.auth-divider span {
    background: var(--surface-color);
    padding: 0 var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    position: relative;
}

/* Auth Switch */
.auth-switch {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.auth-switch a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.auth-switch a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    backdrop-filter: blur(4px);
}

.loading-overlay.show {
    display: flex;
}

.loading-spinner {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xxl);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.loading-spinner p {
    margin: var(--spacing-lg) 0 0 0;
    font-size: var(--font-size-md);
    color: var(--text-secondary);
}

/* Alert Messages */
.alert-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-tooltip);
    max-width: 400px;
}

.alert {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease-out;
    position: relative;
    overflow: hidden;
}

.alert.success {
    background: var(--success-color);
    color: white;
}

.alert.error {
    background: var(--error-color);
    color: white;
}

.alert.warning {
    background: var(--warning-color);
    color: white;
}

.alert.info {
    background: var(--info-color);
    color: white;
}

.alert .material-icons {
    font-size: 20px;
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

.alert-close:hover {
    background: rgba(0, 0, 0, 0.1);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .auth-container {
        margin: var(--spacing-md);
        max-width: none;
    }

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

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .form-row .form-group {
        margin-bottom: var(--spacing-lg);
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .alert-container {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        max-width: none;
    }
}

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

    .auth-logo h1 {
        font-size: var(--font-size-xl);
    }

    .toggle-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #121212;
        --surface-color: #1e1e1e;
        --surface-variant: #2d2d2d;
        --border-color: #404040;
        --divider-color: #606060;
        --text-primary: #ffffff;
        --text-secondary: #b3b3b3;
        --text-hint: #808080;
    }

    .auth-body {
        background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    }

    .input-group input {
        background: var(--surface-variant);
        border-color: var(--border-color);
    }

    .password-toggle:hover {
        background: rgba(255, 255, 255, 0.1);
    }

    .checkbox-wrapper:hover input ~ .checkmark {
        background: var(--surface-variant);
    }
}

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

/* High contrast mode */
@media (prefers-contrast: high) {
    .auth-card {
        border: 2px solid var(--text-primary);
    }

    .input-group input {
        border-width: 2px;
    }

    .toggle-btn.active {
        border: 2px solid var(--text-on-primary);
    }
}

/* Focus styles for keyboard navigation */
.toggle-btn:focus-visible,
.auth-btn:focus-visible,
.password-toggle:focus-visible,
.forgot-link:focus-visible,
.auth-switch a:focus-visible,
.checkbox-wrapper:focus-within {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.input-group input:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.3);
}