/* ============================================
   FEEDI.AI - CENTRALIZED CSS COMPONENTS
   ============================================
   This file contains all shared UI components
   to ensure consistency across the application.
   ============================================ */

/* ============================================
   CSS VARIABLES - Color Palette & Spacing
   ============================================ */
:root {
    /* Primary Colors */
    --color-primary: #20A4F3;
    --color-primary-hover: #1B8BC3;
    --color-primary-light: #f0f9ff;
    --color-primary-shadow: rgba(32, 164, 243, 0.3);

    /* Success Colors */
    --color-success: #28a745;
    --color-success-hover: #218838;
    --color-success-bg: #d4edda;
    --color-success-border: #c3e6cb;
    --color-success-text: #155724;

    /* Danger Colors */
    --color-danger: #dc3545;
    --color-danger-hover: #c82333;
    --color-danger-bg: #f8d7da;
    --color-danger-border: #f5c6cb;
    --color-danger-text: #721c24;

    /* Warning Colors */
    --color-warning: #ffc107;
    --color-warning-bg: #fff3cd;
    --color-warning-border: #ffeeba;
    --color-warning-text: #856404;

    /* Neutral Colors */
    --color-secondary: #6c757d;
    --color-secondary-hover: #5a6268;
    --color-border: #e9ecef;
    --color-border-light: #ddd;
    --color-bg-light: #f8f9fa;
    --color-bg-white: rgba(255, 255, 255, 0.95);

    /* Text Colors */
    --color-text-dark: #333;
    --color-text-muted: #666;
    --color-text-light: #888;

    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #667eea, #764ba2);
    --gradient-accent: linear-gradient(135deg, #5a67d8 0%, #6b46c1 25%, #d946ef 50%, #ec4899 75%, #14b8a6 100%);

    /* Spacing */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-round: 20px;
    --radius-pill: 50px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ============================================
   FORM COMPONENTS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-text-dark);
    font-size: 1rem;
}

.form-input,
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="time"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
    box-sizing: border-box;
    font-family: inherit;
    background-color: #fff;
}

.form-input:focus,
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.form-row {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 200px;
}

/* ============================================
   BUTTON COMPONENTS
   ============================================ */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
    line-height: 1.4;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--color-primary-shadow);
}

/* Success Button */
.btn-success {
    background-color: var(--color-success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background-color: var(--color-success-hover);
    transform: translateY(-1px);
}

/* Secondary Button */
.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-secondary-hover);
    transform: translateY(-1px);
}

/* Danger Button */
.btn-danger {
    background-color: var(--color-danger);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--color-danger-hover);
}

/* Gradient Button */
.btn-gradient {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-gradient:hover:not(:disabled) {
    background: linear-gradient(135deg, #5a67d8, #6b46c1);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Button Sizes */
.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Button with icon */
.btn-icon {
    font-size: 1.1em;
}

/* Button Group */
.btn-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ============================================
   CARD COMPONENT
   ============================================ */
.card {
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.card-header h2,
.card-header h3 {
    margin: 0;
    color: var(--color-text-dark);
}

.card-body {
    color: var(--color-text-muted);
}

.card-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* ============================================
   STATUS BADGE
   ============================================ */
.badge {
    padding: 4px 12px;
    border-radius: var(--radius-round);
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
}

.badge-active,
.badge-success {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
}

.badge-inactive,
.badge-danger {
    background-color: var(--color-danger-bg);
    color: var(--color-danger-text);
}

.badge-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
}

.badge-test {
    background-color: var(--color-warning);
    color: #212529;
}

/* ============================================
   DAY SELECTOR
   ============================================ */
.days-selector {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.day-checkbox {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    padding: 12px 16px;
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    background-color: #fff;
    transition: all var(--transition-fast);
    min-width: 50px;
}

.day-checkbox:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.day-checkbox input[type="checkbox"] {
    display: none;
}

.day-checkbox input[type="checkbox"]:checked + span {
    font-weight: bold;
    color: white;
}

.day-checkbox:has(input[type="checkbox"]:checked) {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.day-checkbox span {
    font-size: 0.9em;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

/* ============================================
   LOADING SPINNER
   ============================================ */
.loading-container {
    text-align: center;
    padding: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

.loading-text {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ============================================
   ALERTS & MESSAGES
   ============================================ */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background-color: var(--color-success-bg);
    border: 1px solid var(--color-success-border);
    color: var(--color-success-text);
}

.alert-danger,
.alert-error {
    background-color: var(--color-danger-bg);
    border: 1px solid var(--color-danger-border);
    color: var(--color-danger-text);
}

.alert-warning {
    background-color: var(--color-warning-bg);
    border: 1px solid var(--color-warning-border);
    color: var(--color-warning-text);
}

.alert-info {
    background-color: var(--color-primary-light);
    border: 1px solid var(--color-primary);
    color: var(--color-primary-hover);
}

/* Flash messages (used by Flask) */
.flash {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-sm);
    background-color: var(--color-success-bg);
    border: 1px solid var(--color-success-border);
    color: var(--color-success-text);
}

/* ============================================
   TEST RESPONSE STYLES
   ============================================ */
.test-response {
    background-color: var(--color-bg-white);
    border: 2px solid var(--color-success);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.test-response h3 {
    margin-top: 0;
    color: var(--color-success);
    font-size: 1.3rem;
}

.test-success {
    background-color: var(--color-success-bg);
    border: 1px solid var(--color-success-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    text-align: center;
}

.test-success p {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--color-success-text);
    font-weight: 500;
}

.test-error {
    background-color: var(--color-danger-bg);
    border: 2px solid var(--color-danger-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    text-align: center;
}

.test-error h3 {
    margin-top: 0;
    color: var(--color-danger-text);
    font-size: 1.3rem;
}

.test-error p {
    color: var(--color-danger-text);
    margin: var(--spacing-md) 0;
    line-height: 1.5;
}

/* ============================================
   RESPONSE CONTENT
   ============================================ */
.response-content {
    line-height: 1.6;
    font-family: 'Georgia', serif;
    color: var(--color-text-dark);
}

.response-preview {
    margin: var(--spacing-md) 0;
    font-size: 0.95rem;
}

/* ============================================
   CONNECTION NOTIFICATION
   ============================================ */
.connection-notification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    z-index: 9999;
    animation: slideDown 0.3s ease-out;
    box-shadow: var(--shadow-md);
}

.connection-notification.online {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
    border: 1px solid var(--color-success-border);
}

.connection-notification.offline {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
    border: 1px solid var(--color-warning-border);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ============================================
   TIMEZONE DISPLAY
   ============================================ */
.timezone-display {
    padding: 12px;
    background-color: var(--color-bg-light);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    color: var(--color-text-muted);
    min-height: 20px;
    display: flex;
    align-items: center;
    margin-top: 8px;
}

/* ============================================
   AUTH PAGES (Login/Register)
   ============================================ */
.auth-container {
    max-width: 450px;
    margin: 40px auto;
    padding: 0 20px;
}

.auth-header {
    text-align: center;
    margin-bottom: 40px;
}

.auth-header h1 {
    color: var(--color-text-dark);
    margin-bottom: 10px;
    font-size: 2rem;
}

.auth-header p {
    color: var(--color-text-muted);
    margin: 0;
    font-size: 1.1rem;
}

.auth-form {
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

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

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

.auth-divider span {
    background-color: var(--color-bg-light);
    padding: 0 20px;
    color: var(--color-text-muted);
    position: relative;
    z-index: 2;
}

.auth-alternate {
    background-color: rgba(32, 164, 243, 0.05);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
}

.auth-alternate h3 {
    color: var(--color-primary);
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
}

.auth-alternate p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    font-size: 1rem;
    line-height: 1.4;
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background-color: var(--color-bg-white);
    border-radius: var(--radius-xl);
    margin: 40px 0;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
}

.empty-state h2 {
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.empty-state p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    font-size: 1.1rem;
}

.empty-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* ============================================
   FORM VALIDATION STYLES
   ============================================ */
.required {
    color: var(--color-danger);
    font-weight: bold;
}

.field-error {
    color: var(--color-danger);
    font-size: 0.85rem;
    margin-top: 4px;
    display: none;
}

.field-error.visible {
    display: block;
}

input.invalid,
textarea.invalid {
    border-color: var(--color-danger) !important;
}

input.valid,
textarea.valid {
    border-color: var(--color-success) !important;
}

/* Password strength indicator */
.password-strength {
    height: 4px;
    border-radius: 2px;
    margin-top: 8px;
    transition: all 0.3s ease;
}

.password-strength.weak {
    background: var(--color-danger);
    width: 33%;
}

.password-strength.medium {
    background: var(--color-warning);
    width: 66%;
}

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

/* Button loading state */
.btn-spinner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

    .spinner {
        animation: none;
        border-top-color: transparent;
    }
}

/* ============================================
   RESPONSIVE STYLES
   ============================================ */
@media (max-width: 768px) {
    .btn {
        padding: 14px 24px;
    }

    .btn-block-mobile {
        width: 100%;
    }

    .form-row {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .form-row .form-group {
        min-width: unset;
    }

    .form-group input,
    .form-group textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .btn-group {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .btn-group .btn {
        width: 100%;
    }

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

    .auth-container {
        margin: 20px auto;
    }

    .empty-state {
        padding: 40px var(--spacing-md);
    }

    .empty-icon {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 20px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.95rem;
    }

    .days-selector {
        gap: 6px;
        justify-content: center;
    }

    .day-checkbox {
        min-width: 40px;
        padding: 10px 12px;
        font-size: 0.85rem;
    }

    .auth-header h1 {
        font-size: 1.6rem;
    }

    .card {
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
    }
}