/* =========================================================
   BUTTONS
   ========================================================= */

.app-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;

    min-height: 40px;
    padding: 0 16px;

    border: 1px solid transparent;
    border-radius: var(--radius-md);

    font-family: inherit;
    font-size: 14px;
    font-weight: 600;

    cursor: pointer;

    transition:
        background-color .2s ease,
        border-color .2s ease,
        color .2s ease,
        transform .2s ease,
        opacity .2s ease;
}

.app-button:hover {
    transform: translateY(-1px);
}

.app-button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.app-button:disabled {
    opacity: .5;
    cursor: not-allowed;
    transform: none;
}


/* PRIMARY */

.app-button-primary {
    background: var(--primary);
    color: var(--text-white);
}

.app-button-primary:hover {
    background: var(--primary-hover);
}


/* SECONDARY */

.app-button-secondary {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}

.app-button-secondary:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
}


/* SUCCESS */

.app-button-success {
    background: var(--success);
    color: var(--text-white);
}


/* DANGER */

.app-button-danger {
    background: var(--danger);
    color: var(--text-white);
}


/* WARNING */

.app-button-warning {
    background: var(--warning);
    color: var(--text-white);
}


/* SMALL */

.app-button-sm,
.app-button-small {
    min-height: 34px;
    padding: 0 12px;
    font-size: 13px;
}


/* LARGE */

.app-button-lg {
    min-height: 46px;
    padding: 0 20px;
    font-size: 15px;
}


/* FULL WIDTH */

.app-button-full {
    width: 100%;
}


/* =========================================================
   CARD
   ========================================================= */

.app-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-6);
}

.app-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: var(--space-4);

    margin-bottom: var(--space-5);
}

.app-card-header h2,
.app-card-header h3 {
    margin: 0;
}

.app-card-header p {
    margin: 6px 0 0;
    color: var(--text-secondary);
}


/* =========================================================
   INPUT
   ========================================================= */

.app-input {
    width: 100%;
    min-height: 42px;

    padding: 10px 12px;

    border: 1px solid var(--border);
    border-radius: var(--radius-md);

    background: var(--surface-secondary);
    color: var(--text);

    outline: none;

    transition:
        border-color .2s ease,
        box-shadow .2s ease,
        background-color .2s ease;
}

.app-input:focus {
    border-color: var(--primary);

    box-shadow:
        0 0 0 3px var(--primary-soft);
}

.app-input::placeholder {
    color: var(--text-muted);
}


/* =========================================================
   SELECT
   ========================================================= */

.app-select {
    width: 100%;
    min-height: 42px;

    padding: 0 12px;

    border: 1px solid var(--border);
    border-radius: var(--radius-md);

    background: var(--surface-secondary);
    color: var(--text);

    outline: none;
}

.app-select:focus {
    border-color: var(--primary);

    box-shadow:
        0 0 0 3px var(--primary-soft);
}


/* =========================================================
   BADGE
   ========================================================= */

.app-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 4px 10px;

    border-radius: 999px;

    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.app-badge-success {
    background: var(--success-soft);
    color: var(--success);
}

.app-badge-danger {
    background: var(--danger-soft);
    color: var(--danger);
}

.app-badge-warning {
    background: var(--warning-soft);
    color: var(--warning);
}

.app-badge-info {
    background: var(--info-soft);
    color: var(--info);
}


/* =========================================================
   ALERT
   ========================================================= */

.app-alert {
    padding: 12px 16px;

    border: 1px solid var(--border);
    border-radius: var(--radius-md);

    margin-bottom: var(--space-4);
}

.app-alert-success {
    background: var(--success-soft);
    color: var(--success);
}

.app-alert-danger,
.app-alert-error {
    background: var(--danger-soft);
    color: var(--danger);
}

.app-alert-warning {
    background: var(--warning-soft);
    color: var(--warning);
}

.app-alert-info {
    background: var(--info-soft);
    color: var(--info);
}


/* =========================================================
   TABLE
   ========================================================= */

.app-table-wrapper {
    width: 100%;
    overflow-x: auto;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

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

.app-table th {
    padding: 12px 16px;

    background: var(--surface-secondary);

    color: var(--text-secondary);

    font-size: 12px;
    font-weight: 600;
    text-align: left;

    border-bottom: 1px solid var(--border);
}

.app-table td {
    padding: 14px 16px;

    border-bottom: 1px solid var(--border);

    color: var(--text);
}

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

.app-table tbody tr:last-child td {
    border-bottom: none;
}


/* =========================================================
   EMPTY STATE
   ========================================================= */

.app-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 48px 24px;

    text-align: center;
}

.app-empty-icon {
    font-size: 42px;
    margin-bottom: 16px;
}

.app-empty h3 {
    margin: 0 0 8px;
}

.app-empty p {
    margin: 0 0 20px;
    color: var(--text-secondary);
}


/* =========================================================
   LOADING
   ========================================================= */

.app-loading {
    display: flex;
    align-items: center;
    justify-content: center;

    min-height: 200px;

    color: var(--text-secondary);
}

.app-spinner {
    width: 24px;
    height: 24px;

    border: 3px solid var(--border);
    border-top-color: var(--primary);

    border-radius: 50%;

    animation: app-spin .8s linear infinite;
}

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


/* =========================================================
   FORM GROUP
   ========================================================= */

.app-form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;

    margin-bottom: var(--space-4);
}

.app-form-label {
    color: var(--text-secondary);

    font-size: 13px;
    font-weight: 600;
}


/* =========================================================
   DIVIDER
   ========================================================= */

.app-divider {
    width: 100%;
    height: 1px;

    background: var(--border);

    margin: var(--space-5) 0;
}


/* =========================================================
   FLEX UTILITIES
   ========================================================= */

.flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-6 {
    gap: var(--space-6);
}

.w-full {
    width: 100%;
}