/* =============================================================
 * File: assets/css/components.css
 * Purpose: Reusable component styles for the ESIMS application.
 *
 * This file defines styles for:
 *   - Buttons (.btn)
 *   - Forms (.form, .form__group, .form__input)
 *   - Cards (.card)
 *   - Tables (.table)
 *   - Badges (.badge)
 *   - Alerts (.alert)
 *   - Pagination (.pagination)
 *   - Modals (.modal)
 *   - Tabs (.tabs)
 *   - Statistics (.stat)
 * ============================================================= */

/* ---------------------------------------------------------
 * BUTTONS
 * --------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.5rem 1rem;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.2;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
}

.btn:hover { text-decoration: none; }

/* Button variants */
.btn--primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.btn--secondary {
    background: var(--color-bg-alt);
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn--secondary:hover {
    background: #ddd;
}

.btn--success {
    background: var(--color-success);
    color: #fff;
}
.btn--success:hover { background: #276749; }

.btn--danger {
    background: var(--color-danger);
    color: #fff;
}
.btn--danger:hover { background: #9B2C2C; }

.btn--outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn--outline:hover {
    background: var(--color-bg-alt);
}

.btn--ghost {
    background: transparent;
    color: var(--color-primary);
    border-color: transparent;
}
.btn--ghost:hover {
    background: var(--color-primary-light);
}

/* Button sizes */
.btn--sm {
    padding: 0.25rem 0.625rem;
    font-size: var(--font-size-xs);
}

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

/* ---------------------------------------------------------
 * FORMS
 * --------------------------------------------------------- */
.form__group {
    margin-bottom: var(--space-md);
}

.form__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.form__input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    border: 1.5px solid #B8B8B2;
    border-radius: var(--border-radius);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
}

.form__textarea {
    resize: vertical;
    min-height: 80px;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    border: 1.5px solid #B8B8B2;
    border-radius: var(--border-radius);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
}

.form__actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

/* Inline form (horizontal layout) */
.form--inline {
    display: flex;
    align-items: flex-end;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.form--inline .form__group {
    margin-bottom: 0;
}

.form__group--grow {
    flex: 1;
    min-width: 200px;
}

/* Search form */
.form--search .form__input {
    height: 40px;
}

/* Checkbox */
.form__group--checkbox {
    display: flex;
    align-items: center;
}

.form__checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
}

.form__checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

/* Form row (2 columns) */
.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

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

/* ---------------------------------------------------------
 * CARDS
 * --------------------------------------------------------- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-lg);
}

.card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.card__body {
    padding: var(--space-lg);
}

.card--highlight {
    border-left: 4px solid var(--color-primary);
}

/* Stat cards for dashboard */
.card--stat .stat {
    text-align: center;
    padding: var(--space-sm) 0;
}

.card--accent-warning { border-left: 4px solid var(--color-warning); }
.card--accent-danger  { border-left: 4px solid var(--color-danger); }
.card--accent-info    { border-left: 4px solid var(--color-info); }

/* Card grid layout */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.card-grid--3 {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.card-grid--4 {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

/* ---------------------------------------------------------
 * STATISTICS
 * --------------------------------------------------------- */
.stat__value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}

.stat__label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}

/* ---------------------------------------------------------
 * TABLES
 * --------------------------------------------------------- */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table th {
    text-align: left;
    padding: 0.625rem 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}

.table td {
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

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

/* Detail/expandable rows */
.row-details,
.row-sub {
    background: var(--color-bg-alt);
}

.row-details td,
.row-sub td {
    padding: var(--space-md) var(--space-lg);
}

.details-panel p {
    margin-bottom: var(--space-xs);
}

.details-panel p:last-child {
    margin-bottom: 0;
}

/* ---------------------------------------------------------
 * BADGES
 * --------------------------------------------------------- */
.badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    line-height: 1.5;
    border-radius: 999px;
    white-space: nowrap;
}

.badge--success { background: #C6F6D5; color: #22543D; }
.badge--warning { background: #FEFCBF; color: #744210; }
.badge--danger  { background: #FED7D7; color: #822727; }
.badge--info    { background: #BEE3F8; color: #2A4365; }
.badge--out     { background: #E2E8F0; color: #4A5568; }
.badge--low     { background: #FEFCBF; color: #744210; }
.badge--in      { background: #C6F6D5; color: #22543D; }

/* Role badges */
.badge--role-user       { background: #E2E8F0; color: #4A5568; }
.badge--role-admin      { background: #BEE3F8; color: #2A4365; }
.badge--role-superadmin { background: #EDE9FE; color: #553C9A; }

/* ---------------------------------------------------------
 * ALERTS
 * --------------------------------------------------------- */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-sm);
    border: 1px solid transparent;
}

.alert--success {
    background: var(--color-success-light);
    color: #22543D;
    border-color: #C6F6D5;
}

.alert--danger {
    background: var(--color-danger-light);
    color: #822727;
    border-color: #FED7D7;
}

.alert--warning {
    background: var(--color-warning-light);
    color: #744210;
    border-color: #FEFCBF;
}

.alert--info {
    background: var(--color-info-light);
    color: #2A4365;
    border-color: #BEE3F8;
}

.alert a {
    color: inherit;
    text-decoration: underline;
}

/* ---------------------------------------------------------
 * PAGINATION
 * --------------------------------------------------------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

.pagination__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--space-sm);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination__btn:hover {
    background: var(--color-bg);
    text-decoration: none;
}

.pagination__btn--active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

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

/* ---------------------------------------------------------
 * MODALS
 * --------------------------------------------------------- */
.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    width: 90%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    background: var(--color-surface);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal--visible { display: block; }

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.modal__content {
    padding: 0;
}

.modal__content .form {
    padding: var(--space-lg);
}

.modal__close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-muted);
    line-height: 1;
    padding: 0;
}

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

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 999;
}

.modal-overlay--visible { display: block; }

/* ---------------------------------------------------------
 * TABS
 * --------------------------------------------------------- */
.tabs {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0;
}

.tab {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

.tab:hover {
    color: var(--color-text);
    text-decoration: none;
}

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