/* ================ PAGE HEADER ================ */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h1 {
    font-size: 22px;
    margin-bottom: 0;
}

/* ================ CARDS ================ */
.card {
    background: var(--bg-card);
    border: none;
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-card);
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-size: 16px;
    margin-bottom: 0;
}

/* ================ STAT CARDS ================ */
.stat-card {
    background: var(--bg-card);
    border: none;
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.stat-card .stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.stat-card .stat-icon i {
    font-size: 24px;
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-card-primary {
    background: var(--primary);
}

.stat-card-primary .stat-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.stat-card-primary .stat-value {
    color: #fff;
}

.stat-card-primary .stat-label {
    color: rgba(255, 255, 255, 0.85);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 28px;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ================ BUTTONS ================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}

.btn i { font-size: 16px; }

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

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}
.btn-secondary:hover { background: var(--primary-light); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: 0.9; }

.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { opacity: 0.9; }

.btn-sm { padding: 6px 12px; font-size: 13px; }

.btn-icon {
    padding: 6px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.btn-icon:hover { border-color: var(--primary); color: var(--primary); }
.btn-icon i { font-size: 16px; }

.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* ================ FORMS ================ */
.form-group { margin-bottom: 16px; }

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.form-control {
    width: 100%;
    height: 38px;
    padding: 0 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-control::placeholder { color: var(--text-secondary); }

.form-control:disabled,
.form-control[readonly] {
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: not-allowed;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' 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: 32px;
}

textarea.form-control {
    height: auto;
    padding: 10px 12px;
    min-height: 80px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-check label {
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
}

.password-wrapper {
    position: relative;
}

.password-wrapper .form-control {
    padding-right: 40px;
}

.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    font-size: 16px;
}

.password-toggle:hover {
    color: var(--primary);
}

/* ================ BADGES ================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    line-height: 1;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-secondary { background: var(--border-color); color: var(--text-secondary); }

/* ================ VERSION TEXT ================ */
.version-text {
    text-align: center;
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 16px;
    opacity: 0.7;
}

/* ================ MODALS ================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-overlay.show { display: flex; }

.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    margin: 20px;
    border: none;
}

.modal-lg { max-width: 700px; }
.modal-xl { max-width: 900px; }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 16px;
    margin-bottom: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    font-size: 20px;
    line-height: 1;
    transition: color 0.2s;
}

.modal-close:hover { color: var(--danger); }

.modal-body { padding: 20px; }

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

/* ================ TOAST ================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn 0.3s ease;
    max-width: 400px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: opacity 0.3s ease;
    opacity: 1;
}

.toast i { font-size: 18px; }

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-warning { background: var(--warning); }
.toast-info { background: var(--info); }

@keyframes toastSlideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ================ LOADING ================ */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.spin {
    animation: spin 0.6s linear infinite;
}

.btn-loader {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.page-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* ================ FILTER BAR ================ */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.filter-bar .form-control {
    width: auto;
    min-width: 160px;
}

.export-btns {
    display: flex;
    gap: 6px;
    margin-left: auto;
}

/* ================ LOGIN PAGE ================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 420px;
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo img {
    max-height: 50px;
    object-fit: contain;
}

.login-title {
    text-align: center;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.login-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

.login-footer {
    text-align: center;
    margin-top: 16px;
}

.login-footer a {
    font-size: 13px;
    color: var(--primary);
}

/* ================ SIDEBAR OVERLAY ================ */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    display: none;
}

.sidebar-overlay.show { display: block; }

body.sidebar-collapsed .sidebar { width: var(--sidebar-collapsed); }
body.sidebar-collapsed .sidebar .sidebar-item span { display: none; }
body.sidebar-collapsed .sidebar .sidebar-brand span { display: none; }
body.sidebar-collapsed .sidebar .sidebar-section { display: none; }
body.sidebar-collapsed .header { left: var(--sidebar-collapsed); }
body.sidebar-collapsed .main-content { margin-left: var(--sidebar-collapsed); width: calc(100% - var(--sidebar-collapsed)); }

/* ================ UTILITY CLASSES ================ */
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-primary { color: var(--primary); }
.text-info { color: var(--info); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-12 { font-size: 12px; }
.fs-13 { font-size: 13px; }
.fs-16 { font-size: 16px; }
.fs-18 { font-size: 18px; }
.fs-24 { font-size: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: 4px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.ml-auto { margin-left: auto; }
.mr-8 { margin-right: 8px; }
.p-0 { padding: 0; }
.d-flex { display: flex; }
.d-none { display: none; }
.d-block { display: block; }
.flex-1 { flex: 1; }
.gap-4 { gap: 4px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.w-100 { width: 100%; }
.flex-wrap { flex-wrap: wrap; }
.overflow-auto { overflow: auto; }
.cursor-pointer { cursor: pointer; }

/* ================ FOOTER ================ */
.admin-footer {
    text-align: center;
    padding: 12px 24px;
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: auto;
    position: sticky;
    bottom: 0;
    width: 100%;
    background: var(--bg-primary);
}

.admin-footer p {
    margin: 0;
}

.admin-footer a {
    color: var(--primary);
    text-decoration: none;
}

.admin-footer a:hover {
    text-decoration: underline;
}