/**
 * Aakaari Auth — Frontend Styles
 *
 * Modern, clean authentication UI with responsive design
 *
 * @package Aakaari\Auth
 * @since 1.0.0
 */

/* ============================================
   CSS Custom Properties
   ============================================ */
:root {
    --aa-primary: #2563eb;
    --aa-primary-hover: #1d4ed8;
    --aa-primary-light: #dbeafe;
    --aa-primary-dark: #1e40af;
    --aa-success: #10b981;
    --aa-success-light: #d1fae5;
    --aa-success-dark: #065f46;
    --aa-error: #ef4444;
    --aa-error-light: #fee2e2;
    --aa-error-dark: #991b1b;
    --aa-warning: #f59e0b;
    --aa-warning-light: #fef3c7;
    --aa-gray-50: #f9fafb;
    --aa-gray-100: #f3f4f6;
    --aa-gray-200: #e5e7eb;
    --aa-gray-300: #d1d5db;
    --aa-gray-400: #9ca3af;
    --aa-gray-500: #6b7280;
    --aa-gray-600: #4b5563;
    --aa-gray-700: #374151;
    --aa-gray-800: #1f2937;
    --aa-gray-900: #111827;
    --aa-white: #ffffff;
    --aa-radius: 0.75rem;
    --aa-radius-lg: 1rem;
    --aa-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --aa-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --aa-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --aa-transition: 0.2s ease;
}

/* ============================================
   Layout & Wrapper
   ============================================ */
.aakaari-auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
    padding: 2rem 1rem;
    background: transparent;
}

.aakaari-auth-card {
    width: 100%;
    max-width: 460px;
    background: var(--aa-white);
    border-radius: var(--aa-radius-lg);
    box-shadow: var(--aa-shadow-xl);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

.aakaari-auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--aa-primary) 0%, #7c3aed 100%);
}

/* ============================================
   Header
   ============================================ */
.aakaari-auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.aakaari-auth-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--aa-primary-light);
    border-radius: 1rem;
    color: var(--aa-primary);
    margin-bottom: 1.25rem;
}

.aakaari-auth-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--aa-gray-900);
    margin: 0 0 0.5rem;
    line-height: 1.2;
}

.aakaari-auth-header p {
    font-size: 0.9375rem;
    color: var(--aa-gray-500);
    margin: 0;
    line-height: 1.5;
}

/* ============================================
   Form Fields
   ============================================ */
.aakaari-auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.aakaari-auth-field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.aakaari-auth-field label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--aa-gray-700);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.aakaari-auth-field label .required {
    color: var(--aa-error);
}

.aakaari-auth-field label .optional {
    font-weight: 400;
    color: var(--aa-gray-400);
    font-size: 0.8125rem;
}

.aakaari-auth-field-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.aakaari-auth-field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.aakaari-auth-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.aakaari-auth-input-wrapper svg:first-child {
    position: absolute;
    left: 0.875rem;
    color: var(--aa-gray-400);
    pointer-events: none;
    z-index: 1;
    transition: color var(--aa-transition);
}

.aakaari-auth-input-wrapper input {
    width: 100%;
    padding: 0.75rem 3rem 0.75rem 2.75rem;
    border: 2px solid var(--aa-gray-200);
    border-radius: var(--aa-radius);
    font-size: 0.9375rem;
    color: var(--aa-gray-900);
    background: var(--aa-white);
    transition: all var(--aa-transition);
    outline: none;
    font-family: inherit;
}

.aakaari-auth-input-wrapper input::placeholder {
    color: var(--aa-gray-400);
}

.aakaari-auth-input-wrapper input:focus {
    border-color: var(--aa-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.aakaari-auth-input-wrapper input:focus ~ svg:first-child,
.aakaari-auth-input-wrapper input:focus + svg {
    color: var(--aa-primary);
}

/* Input validation states */
.aakaari-auth-input-wrapper input.input-error {
    border-color: var(--aa-error);
}

.aakaari-auth-input-wrapper input.input-error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.aakaari-auth-input-wrapper input.input-success {
    border-color: var(--aa-success);
}

/* Password toggle button */
.aakaari-auth-toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.80rem.80rem;
    color: var(--aa-gray-400);
    display: flex;
    align-items: center;
    transition: color var(--aa-transition);
    z-index: 1;
}

.aakaari-auth-toggle-password:hover {
    color: var(--aa-gray-600);
}

/* Hide default browser password reveal controls (Edge/IE) */
.aakaari-auth-input-wrapper input[type="password"]::-ms-reveal,
.aakaari-auth-input-wrapper input[type="password"]::-ms-clear {
    display: none;
}

/* ============================================
   Password Strength Indicator
   ============================================ */
.aakaari-auth-password-strength {
    margin-top: 0.375rem;
}

.aakaari-auth-strength-bar {
    height: 4px;
    background: var(--aa-gray-200);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.25rem;
}

.aakaari-auth-strength-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s ease, background-color 0.3s ease;
    width: 0;
}

.aakaari-auth-strength-fill.strength-weak { width: 20%; background-color: var(--aa-error); }
.aakaari-auth-strength-fill.strength-fair { width: 40%; background-color: var(--aa-warning); }
.aakaari-auth-strength-fill.strength-good { width: 60%; background-color: #fbbf24; }
.aakaari-auth-strength-fill.strength-strong { width: 80%; background-color: var(--aa-success); }
.aakaari-auth-strength-fill.strength-very_strong { width: 100%; background-color: var(--aa-success); }

.aakaari-auth-strength-text {
    font-size: 0.75rem;
    font-weight: 500;
}

.aakaari-auth-strength-text.strength-weak { color: var(--aa-error); }
.aakaari-auth-strength-text.strength-fair { color: var(--aa-warning); }
.aakaari-auth-strength-text.strength-good { color: #d97706; }
.aakaari-auth-strength-text.strength-strong { color: var(--aa-success); }
.aakaari-auth-strength-text.strength-very_strong { color: var(--aa-success); }

/* ============================================
   Checkbox
   ============================================ */
.aakaari-auth-checkbox {
    display: flex;
    align-items: center;
}

.aakaari-auth-checkbox label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--aa-gray-600);
}

.aakaari-auth-checkbox input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    accent-color: var(--aa-primary);
    cursor: pointer;
}

/* ============================================
   Buttons
   ============================================ */
.aakaari-auth-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-radius: var(--aa-radius);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--aa-transition);
    text-decoration: none;
    font-family: inherit;
    line-height: 1.5;
}

.aakaari-auth-btn-primary {
    background: var(--aa-primary);
    color: var(--aa-white);
}

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

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

.aakaari-auth-btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.aakaari-auth-btn-full {
    width: 100%;
}

.aakaari-auth-btn .btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* ============================================
   Alerts
   ============================================ */
.aakaari-auth-alert {
    padding: 0.875rem 1rem;
    border-radius: var(--aa-radius);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.aakaari-auth-alert-error {
    background: var(--aa-error-light);
    color: var(--aa-error-dark);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.aakaari-auth-alert-success {
    background: var(--aa-success-light);
    color: var(--aa-success-dark);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.aakaari-auth-alert-warning {
    background: var(--aa-warning-light);
    color: #92400e;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* ============================================
   Links
   ============================================ */
.aakaari-auth-link {
    color: var(--aa-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--aa-transition);
}

.aakaari-auth-link:hover {
    color: var(--aa-primary-hover);
    text-decoration: underline;
}

/* ============================================
   Footer
   ============================================ */
.aakaari-auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--aa-gray-100);
}

.aakaari-auth-footer p {
    font-size: 0.875rem;
    color: var(--aa-gray-500);
    margin: 0;
}

.aakaari-auth-footer a {
    color: var(--aa-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--aa-transition);
}

.aakaari-auth-footer a:hover {
    color: var(--aa-primary-hover);
    text-decoration: underline;
}

/* ============================================
   Spinner
   ============================================ */
.aakaari-auth-spinner {
    animation: aakaari-spin 0.8s linear infinite;
}

.aakaari-auth-spinner-large {
    animation: aakaari-spin 1s linear infinite;
    color: var(--aa-primary);
}

@keyframes aakaari-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================
   Loading State
   ============================================ */
.aakaari-auth-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    gap: 1rem;
}

.aakaari-auth-loading p {
    color: var(--aa-gray-500);
    font-size: 0.9375rem;
}

/* ============================================
   Info State (already logged in)
   ============================================ */
.aakaari-auth-info {
    text-align: center;
    padding: 2rem;
}

.aakaari-auth-info p {
    color: var(--aa-gray-600);
    font-size: 1rem;
    margin-bottom: 1rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 640px) {
    .aakaari-auth-wrapper {
        padding: 1rem;
        min-height: 70vh;
    }

    .aakaari-auth-card {
        padding: 1.75rem;
    }

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

    .aakaari-auth-field-row {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

@media (max-width: 400px) {
    .aakaari-auth-card {
        padding: 1.5rem;
    }

    .aakaari-auth-field-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
}