/* =====================================================
   CRM PRO - COMPONENT STYLES
   Buttons, Forms, Cards, Tables, Badges, etc.
   ===================================================== */

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-color-dark);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-500), var(--success-600));
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-500), var(--danger-600));
    color: white;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    background: transparent;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-icon.active {
    background: var(--bg-active);
    color: var(--primary-600);
}

/* Zalo button */
.btn-zalo {
    background: #0068FF !important;
    color: white !important;
    border-color: #0068FF !important;
}

.btn-zalo:hover {
    background: #0052CC !important;
    transform: translateY(-1px);
}

.btn-icon.btn-zalo {
    background: rgba(0, 104, 255, 0.1);
    color: #0068FF;
}

.btn-icon.btn-zalo:hover {
    background: #0068FF;
    color: white;
}

/* Info box for settings */
.info-box {
    background: var(--bg-secondary);
    padding: var(--spacing-3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color-light);
}

/* === FORMS === */
.form-group {
    margin-bottom: var(--spacing-4);
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

.form-input.error {
    border-color: var(--danger-500);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-hint {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-1);
}

.form-error {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--danger-600);
    margin-top: var(--spacing-1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* === CARDS === */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color-light);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-color-light);
}

.card-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.card-body {
    padding: var(--spacing-5);
}

.card-footer {
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--border-color-light);
    background: var(--bg-secondary);
}

/* === STAT CARDS === */
.stat-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-5);
    border: 1px solid var(--border-color-light);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    transition: all var(--transition-fast);
}

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

.stat-card.clickable {
    cursor: pointer;
}

.stat-card.clickable:active {
    transform: translateY(0);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-icon.blue {
    background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
    color: var(--primary-600);
}

.stat-icon.green {
    background: linear-gradient(135deg, var(--success-100), var(--success-50));
    color: var(--success-600);
}

.stat-icon.purple {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(139, 92, 246, 0.1));
    color: var(--purple-600);
}

.stat-icon.orange {
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.2), rgba(249, 115, 22, 0.1));
    color: var(--orange-600);
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-1);
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: var(--line-height-tight);
}

.stat-change {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-1);
}

.stat-change.positive {
    color: var(--success-600);
}

.stat-change.negative {
    color: var(--danger-600);
}

/* === TABLES === */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--border-color-light);
}

.table th {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
}

.table td {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--bg-hover);
}

.table-actions {
    display: flex;
    gap: var(--spacing-1);
}

/* Row/Card highlights for reminders */
.row-highlight-warning {
    background-color: rgba(245, 158, 11, 0.1) !important;
    border-left: 3px solid var(--warning-500);
}

.card-highlight-warning {
    border-left: 4px solid var(--warning-500);
    background: linear-gradient(90deg, rgba(245, 158, 11, 0.08) 0%, transparent 30%);
}

/* Text utilities */
.text-danger {
    color: var(--danger-600) !important;
}

.text-warning {
    color: var(--warning-600) !important;
}

.text-success {
    color: var(--success-600) !important;
}

.font-semibold {
    font-weight: var(--font-weight-semibold) !important;
}

.font-bold {
    font-weight: var(--font-weight-bold) !important;
}

/* === BADGES === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background: var(--primary-100);
    color: var(--primary-700);
}

.badge-success {
    background: var(--success-100);
    color: var(--success-700);
}

.badge-warning {
    background: var(--warning-100);
    color: var(--warning-600);
}

.badge-danger {
    background: var(--danger-100);
    color: var(--danger-600);
}

.badge-gray {
    background: var(--gray-100);
    color: var(--gray-600);
}

.badge-purple {
    background: rgba(139, 92, 246, 0.15);
    color: var(--purple-600);
}

.badge-orange {
    background: rgba(249, 115, 22, 0.15);
    color: var(--orange-600);
}

/* === AVATAR === */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

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

.avatar-lg {
    width: 56px;
    height: 56px;
    font-size: var(--font-size-lg);
}

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

/* === MODAL === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--spacing-4);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-lg {
    max-width: 700px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-color-light);
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.modal-body {
    padding: var(--spacing-5);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--border-color-light);
    background: var(--bg-secondary);
}

/* === TOAST === */
.toast-container {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 400px;
    animation: slideUp var(--transition-normal);
}

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    background: var(--success-100);
    color: var(--success-600);
}

.toast-error .toast-icon {
    background: var(--danger-100);
    color: var(--danger-600);
}

.toast-warning .toast-icon {
    background: var(--warning-100);
    color: var(--warning-600);
}

.toast-info .toast-icon {
    background: var(--info-100);
    color: var(--info-600);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.toast-close {
    color: var(--text-tertiary);
}

/* === PAGINATION === */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4);
    border-top: 1px solid var(--border-color-light);
    background: var(--bg-secondary);
}

.pagination-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.pagination-buttons {
    display: flex;
    gap: var(--spacing-2);
}

.pagination-btn {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-color-dark);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-btn.active {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
}

/* === DROPDOWN === */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 180px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    transition: background var(--transition-fast);
    cursor: pointer;
}

.dropdown-item:hover {
    background: var(--bg-hover);
}

.dropdown-item.danger {
    color: var(--danger-600);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color-light);
    margin: var(--spacing-1) 0;
}

/* === TABS === */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-4);
}

.tab {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.tab:hover {
    color: var(--text-primary);
}

.tab.active {
    color: var(--primary-600);
    border-bottom-color: var(--primary-600);
}

/* === SEARCH BOX === */
.search-box {
    position: relative;
    width: 280px;
}

.search-box i {
    position: absolute;
    left: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3) var(--spacing-2) 36px;
    background: var(--bg-secondary);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.search-box input:focus {
    background: var(--bg-primary);
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.search-box input::placeholder {
    color: var(--text-tertiary);
}

/* === CHECKBOX === */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
}

.checkbox {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color-dark);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.checkbox.checked {
    background: var(--primary-500);
    border-color: var(--primary-500);
}

.checkbox.checked::after {
    content: '✓';
    color: white;
    font-size: 12px;
}