/**
 * ============================================
 * UI Components - Buttons, Cards, Forms
 * ============================================
 * كل الـ Components الأساسية
 */

/* ==========================================
 * Buttons - Professional & Touch-Friendly
 * ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);

    /* Size - Mobile First (Large) */
    min-height: var(--btn-height-lg);
    padding: 0 var(--space-8);

    /* Typography */
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;

    /* Appearance */
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md), var(--shadow-primary);

    /* Interaction */
    cursor: pointer;
    user-select: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;

    /* Transitions */
    transition: all var(--transition-base);

    /* Prevent text selection on double tap */
    -webkit-touch-callout: none;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-primary);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn:disabled,
.btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    pointer-events: none;
}

/* Button Sizes */
.btn-sm {
    min-height: var(--btn-height-sm);
    padding: 0 var(--space-4);
    font-size: var(--text-sm);
}

.btn-md {
    min-height: var(--btn-height-md);
    padding: 0 var(--space-6);
}

.btn-xl {
    min-height: var(--btn-height-xl);
    padding: 0 var(--space-10);
    font-size: var(--text-lg);
}

/* Button Variants */
.btn-primary {
    background: var(--color-primary-600);
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-primary);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-700);
}

.btn-success {
    background: var(--color-success-600);
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-success);
}

.btn-success:hover:not(:disabled) {
    background: var(--color-success-700);
}

.btn-warning {
    background: var(--color-warning-600);
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-warning);
}

.btn-warning:hover:not(:disabled) {
    background: var(--color-warning-700);
}

.btn-danger {
    background: var(--color-danger-600);
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-danger);
}

.btn-danger:hover:not(:disabled) {
    background: var(--color-danger-700);
}

/* Outline Buttons */
.btn-outline {
    background: white;
    color: var(--color-primary-600);
    border: 2px solid var(--color-primary-500);
    box-shadow: var(--shadow-sm);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary-50);
    border-color: var(--color-primary-600);
}

.btn-outline-danger {
    background: white;
    color: var(--color-danger-600);
    border: 2px solid var(--color-danger-500);
}

.btn-outline-danger:hover:not(:disabled) {
    background: var(--color-danger-50);
    border-color: var(--color-danger-600);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--color-gray-700);
    box-shadow: none;
}

.btn-ghost:hover:not(:disabled) {
    background: var(--color-gray-100);
}

/* Full Width Button */
.btn-block {
    width: 100%;
    display: flex;
}

/* Icon Button */
.btn-icon {
    min-width: var(--btn-height-lg);
    padding: 0;
    border-radius: var(--radius-full);
}

/* Desktop: Smaller Buttons */
@media (min-width: 768px) {
    .btn {
        min-height: var(--btn-height-md);
        padding: 0 var(--space-6);
        font-size: var(--text-sm);
    }

    .btn-lg {
        min-height: var(--btn-height-lg);
        padding: 0 var(--space-8);
        font-size: var(--text-base);
    }
}

/* ==========================================
 * Cards - Modern with Shadows
 * ========================================== */

.card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);

    /* IMPORTANT: Ensure card stays within bounds */
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 2px solid var(--color-gray-100);
}

.card-body {
    padding: var(--space-4) 0;
}

.card-footer {
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-gray-100);
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    flex-wrap: wrap; /* Allow wrapping on small screens */
}

/* Stat Card */
.stat-card {
    background: white;
    color: var(--color-text-primary);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--color-gray-100);

    /* IMPORTANT */
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;

    /* Subtle gradient overlay */
    position: relative;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.stat-card-value {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    line-height: 1;
    margin-bottom: var(--space-2);
    word-break: break-word;
    color: var(--color-primary-600);
}

.stat-card-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: var(--font-semibold);
}

/* Stat Card Variants - With colored icons */
.stat-card-primary .stat-card-value {
    color: var(--color-primary-600);
}

.stat-card-success .stat-card-value {
    color: var(--color-success-600);
}

.stat-card-warning .stat-card-value {
    color: var(--color-warning-600);
}

.stat-card-danger .stat-card-value {
    color: var(--color-danger-600);
}

/* ==========================================
 * Forms - Large Touch-Friendly Inputs
 * ========================================== */

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

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.form-label-required::after {
    content: '*';
    color: var(--color-danger-500);
    margin-left: var(--space-1);
}

/* Text Inputs */
.form-input,
.form-select,
.form-textarea {
    display: block;
    width: 100%;

    /* Size - Mobile First (Large) */
    min-height: var(--input-height-lg);
    padding: var(--space-4);

    /* Typography */
    font-size: var(--text-base);
    font-family: inherit;
    line-height: var(--leading-normal);

    /* Appearance */
    background: white;
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);

    /* Transitions */
    transition: all var(--transition-base);

    /* Remove default appearance */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;

    /* IMPORTANT: Prevent overflow */
    box-sizing: border-box;
    max-width: 100%;
}

/* Date Input - Fix overflow */
.form-input[type="date"],
.form-input[type="datetime-local"],
.form-input[type="time"] {
    /* Ensure it stays within bounds */
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Date picker specific fixes */
.form-input[type="date"]::-webkit-calendar-picker-indicator {
    padding: 0;
    cursor: pointer;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    padding: var(--space-4);
}

/* Focus State */
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

/* Error State */
.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-danger-500);
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
    box-shadow: 0 0 0 3px var(--color-danger-100);
}

/* Success State */
.form-input.success,
.form-select.success {
    border-color: var(--color-success-500);
    padding-right: 3rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2310B981'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    background-size: 24px 24px;
}

/* Disabled State */
.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    background: var(--color-gray-100);
    color: var(--color-text-disabled);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Form Helper Text */
.form-help {
    display: block;
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.form-error {
    display: block;
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-danger-600);
    font-weight: var(--font-medium);
}

/* Select Dropdown Arrow */
.form-select {
    padding-right: 3rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%234B5563'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    background-size: 24px 24px;
}

/* Desktop: Smaller Inputs */
@media (min-width: 768px) {
    .form-input,
    .form-select {
        min-height: var(--input-height-md);
        font-size: var(--text-sm);
    }
}

/* ==========================================
 * File Upload - Custom Styling
 * ========================================== */

.file-upload {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 160px;
    padding: var(--space-6);
    background: var(--color-gray-50);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.file-upload:hover {
    background: var(--color-primary-50);
    border-color: var(--color-primary-500);
}

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-upload-content {
    text-align: center;
    color: var(--color-text-secondary);
}

.file-upload-icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-2);
}

/* ==========================================
 * Checkbox & Radio - Custom
 * ========================================== */

.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--touch-target);
}

.form-check-input {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.form-check-input:checked {
    background: var(--color-primary-500);
    border-color: var(--color-primary-500);
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-label {
    font-size: var(--text-base);
    cursor: pointer;
    user-select: none;
}

/* ==========================================
 * Alert Messages
 * ========================================== */

.alert {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-sm);
}

.alert-success {
    background: var(--color-success-50);
    color: var(--color-success-900);
    border: 2px solid var(--color-success-500);
    border-left: 4px solid var(--color-success-600);
}

.alert-warning {
    background: var(--color-warning-50);
    color: var(--color-warning-900);
    border: 2px solid var(--color-warning-500);
    border-left: 4px solid var(--color-warning-600);
}

.alert-danger,
.alert-error {
    background: var(--color-danger-50);
    color: var(--color-danger-900);
    border: 2px solid var(--color-danger-500);
    border-left: 4px solid var(--color-danger-600);
}

.alert-info {
    background: var(--color-primary-50);
    color: var(--color-primary-900);
    border: 2px solid var(--color-primary-500);
    border-left: 4px solid var(--color-primary-600);
}

.alert-icon {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    flex-shrink: 0;
}

/* ==========================================
 * Badge
 * ========================================== */

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background: var(--color-primary-100);
    color: var(--color-primary-800);
    border: 1px solid var(--color-primary-200);
}

.badge-success {
    background: var(--color-success-100);
    color: var(--color-success-800);
    border: 1px solid var(--color-success-200);
}

.badge-warning {
    background: var(--color-warning-100);
    color: var(--color-warning-800);
    border: 1px solid var(--color-warning-200);
}

.badge-danger {
    background: var(--color-danger-100);
    color: var(--color-danger-800);
    border: 1px solid var(--color-danger-200);
}

/* ==========================================
 * Progress Bar
 * ========================================== */

.progress {
    width: 100%;
    height: 12px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

/* ==========================================
 * Divider
 * ========================================== */

.divider {
    height: 1px;
    background: var(--color-divider);
    margin: var(--space-6) 0;
}

.divider-text {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--space-6) 0;
}

.divider-text::before,
.divider-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-divider);
}

.divider-text::before {
    margin-right: var(--space-4);
}

.divider-text::after {
    margin-left: var(--space-4);
}

/* ==========================================
 * Loading Spinner
 * ========================================== */

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary-500);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner-lg {
    width: 48px;
    height: 48px;
    border-width: 4px;
}

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

/* ==========================================
 * Empty State
 * ========================================== */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12) var(--space-6);
    text-align: center;
}

.empty-state-icon {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

/* ==========================================
 * Avatar
 * ========================================== */

.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    color: white;
    font-weight: var(--font-bold);
    font-size: var(--text-lg);
    overflow: hidden;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: var(--text-sm);
}

.avatar-lg {
    width: 64px;
    height: 64px;
    font-size: var(--text-2xl);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}