/* ============================================================
   Components — Buttons, Cards, Inputs, Badges, etc.
   ============================================================ */

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    min-height: 42px;
}

.btn:active {
    transform: scale(0.97);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 170, 204, 0.3);
}
.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 16px rgba(0, 170, 204, 0.4);
    transform: translateY(-1px);
}

.btn-success {
    background: var(--color-success);
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}
.btn-success:hover:not(:disabled) {
    background: var(--color-success-hover);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
    transform: translateY(-1px);
}

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

.btn-warning {
    background: var(--color-warning);
    color: #000;
}
.btn-warning:hover:not(:disabled) {
    background: var(--color-warning-hover);
}

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

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

.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
    min-height: 32px;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-md);
    min-height: 52px;
    border-radius: var(--radius-lg);
}

.btn-xl {
    padding: var(--space-5) var(--space-10);
    font-size: var(--font-size-lg);
    min-height: 60px;
    border-radius: var(--radius-lg);
}

.btn-icon {
    padding: var(--space-2);
    min-height: 36px;
    min-width: 36px;
    border-radius: var(--radius-md);
}

.btn-block {
    width: 100%;
}

/* ── Cards ── */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

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

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

.card-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--color-border);
}

.card-glass {
    background: var(--color-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* ── Inputs ── */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
    min-height: 44px;
}

.form-input:hover,
.form-select:hover {
    border-color: var(--color-border-hover);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}

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

.form-input-lg {
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-size-lg);
    min-height: 56px;
    border-radius: var(--radius-lg);
}

.form-input-search {
    padding-left: var(--space-10);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'%3E%3C/line%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: var(--space-4) center;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    padding-right: var(--space-10);
}

/* ── Badges ── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    white-space: nowrap;
    line-height: 1.4;
}

.badge-primary { background: var(--color-primary-soft); color: var(--color-primary); }
.badge-success { background: var(--color-success-soft); color: var(--color-success); }
.badge-warning { background: var(--color-warning-soft); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-soft); color: var(--color-danger); }
.badge-info { background: var(--color-info-soft); color: var(--color-info); }

/* ── Divider ── */
.divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-4) 0;
}

/* ── Stat Box ── */
.stat-box {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ── Table ── */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

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

.table th {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-tertiary);
    background: var(--color-bg-page, var(--color-bg-elevated));
    text-align: left;
    white-space: nowrap;
}

.table td {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border);
    vertical-align: middle;
}

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

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

/* ── Modal ── */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.modal {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-spring);
    box-shadow: var(--shadow-xl);
}

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

.modal-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: var(--font-size-lg);
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--color-text-tertiary);
    cursor: pointer;
    font-size: 18px;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
}

/* ── Notification Toast ── */
.toast-container {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-notification);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    max-width: 380px;
}

.toast {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-5);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease forwards;
    min-width: 300px;
}

.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-danger); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-info { border-left: 3px solid var(--color-primary); }

.toast-icon {
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 1px;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

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

/* ── Loading Spinner ── */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 40px; height: 40px; border-width: 4px; }

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

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--space-4);
    opacity: 0.3;
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    max-width: 300px;
}