/* ========================================
   DESIGN SYSTEM - Controle de Produto Retido
   Dark Mode Premium com Glassmorphism
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ====== CSS Variables ====== */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1a2234;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --bg-glass-hover: rgba(255, 255, 255, 0.08);
    --bg-input: rgba(255, 255, 255, 0.06);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(99, 102, 241, 0.5);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #818cf8;

    --accent-primary: #6366f1;
    --accent-primary-hover: #818cf8;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --accent-gradient-hover: linear-gradient(135deg, #818cf8, #a78bfa);

    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.12);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.12);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.12);

    --sopro: #3b82f6;
    --injecao: #f59e0b;
    --serigrafia: #8b5cf6;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --sidebar-width: 260px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ====== Reset & Base ====== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Background gradient effect */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.03) 0%, transparent 60%);
    z-index: 0;
    pointer-events: none;
}

/* ====== Layout ====== */
.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ====== Sidebar ====== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow-glow);
}

.sidebar-logo-text {
    display: flex;
    flex-direction: column;
}

.sidebar-logo-text h1 {
    font-size: 1.05rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.sidebar-logo-text span {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 12px 12px 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 2px;
    border: 1px solid transparent;
}

.nav-item:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-primary-hover);
    border-color: rgba(99, 102, 241, 0.2);
}

.nav-item .nav-icon {
    font-size: 1.15rem;
    width: 24px;
    text-align: center;
}

.nav-item .nav-badge {
    margin-left: auto;
    background: var(--accent-gradient);
    color: white;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.72rem;
    color: var(--text-muted);
    text-align: center;
}

/* ====== Main Content ====== */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ====== Top Bar ====== */
.topbar {
    height: 64px;
    background: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.topbar-breadcrumb {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
}

/* ====== Page Content ====== */
.page-content {
    padding: 28px;
    flex: 1;
}

.page-section {
    display: none;
}

.page-section.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ====== Cards ====== */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ====== KPI Cards ====== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.kpi-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 22px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.kpi-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: var(--transition);
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.12);
}

.kpi-card:hover::after {
    opacity: 1;
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.kpi-icon.blue { background: var(--info-bg); }
.kpi-icon.green { background: var(--success-bg); }
.kpi-icon.yellow { background: var(--warning-bg); }
.kpi-icon.red { background: var(--danger-bg); }
.kpi-icon.purple { background: rgba(139, 92, 246, 0.12); }

.kpi-info {
    flex: 1;
    min-width: 0;
}

.kpi-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 4px;
}

.kpi-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ====== Charts ====== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* ====== Table ====== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.82rem;
}

.data-table thead th {
    background: rgba(99, 102, 241, 0.08);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.8px;
    padding: 12px 14px;
    text-align: left;
    white-space: nowrap;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 5;
}

.data-table thead th:first-child {
    border-radius: var(--radius-md) 0 0 0;
}

.data-table thead th:last-child {
    border-radius: 0 var(--radius-md) 0 0;
}

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

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

.data-table tbody td {
    padding: 11px 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    white-space: nowrap;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.data-table tbody td:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* ====== Badges ====== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.badge-sopro {
    background: rgba(59, 130, 246, 0.14);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.badge-injecao {
    background: rgba(245, 158, 11, 0.14);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-serigrafia {
    background: rgba(139, 92, 246, 0.14);
    color: #a78bfa;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

/* ====== Buttons ====== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    font-family: inherit;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--accent-gradient-hover);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn-danger {
    background: var(--danger-bg);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.78rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    justify-content: center;
    border-radius: var(--radius-sm);
}

/* ====== Form ====== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}

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

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-control {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
    width: 100%;
}

.form-control:focus {
    border-color: var(--border-focus);
    background: rgba(99, 102, 241, 0.06);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

select.form-control {
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8.825L.35 3.175l.7-.7L6 7.425l4.95-4.95.7.7z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

select.form-control option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

/* ====== Filters ====== */
.filters-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filter-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-control {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
    min-width: 140px;
}

.filter-control:focus {
    border-color: var(--border-focus);
}

select.filter-control {
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8.825L.35 3.175l.7-.7L6 7.425l4.95-4.95.7.7z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
    background-color: var(--bg-input);
}

select.filter-control option {
    background: var(--bg-secondary);
}

.search-input {
    position: relative;
}

.search-input input {
    padding-left: 36px;
    min-width: 240px;
}

.search-input .search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

/* ====== Pagination ====== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.pagination-info {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.pagination-buttons {
    display: flex;
    gap: 6px;
}

.pagination-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.82rem;
    font-family: inherit;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
}

.pagination-btn.active {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ====== Modal ====== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
    animation: fadeIn 0.25s ease;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-glass);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1.1rem;
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ====== Section Headers ====== */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.section-divider {
    border: 0;
    height: 1px;
    background: var(--border-color);
    margin: 24px 0;
}

.form-section-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-primary-hover);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 24px 0 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(99, 102, 241, 0.15);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ====== Datalist ====== */
.autocomplete-wrapper {
    position: relative;
}

.autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    max-height: 200px;
    overflow-y: auto;
    z-index: 50;
    display: none;
    box-shadow: var(--shadow-lg);
}

.autocomplete-list.show {
    display: block;
}

.autocomplete-item {
    padding: 8px 14px;
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.autocomplete-item:hover,
.autocomplete-item.highlighted {
    background: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
}

/* ====== Toolbar ====== */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.toolbar-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ====== Records Count ====== */
.records-count {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.records-count strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* ====== Toast Notifications ====== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease;
    font-size: 0.88rem;
}

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

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ====== Empty State ====== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3.5rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state-text {
    font-size: 0.88rem;
    max-width: 400px;
    margin: 0 auto 20px;
    line-height: 1.6;
}

/* ====== Detail View ====== */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.detail-value {
    font-size: 0.92rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* ====== Scrollbar ====== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.18);
}

/* ====== File Drop Zone ====== */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.drop-zone-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.6;
}

.drop-zone-text {
    font-size: 0.92rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.drop-zone-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ====== Responsive ====== */
@media (max-width: 1024px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .page-content {
        padding: 16px;
    }

    .kpi-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }

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

    .filter-control,
    .search-input input {
        min-width: unset;
        width: 100%;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }
}

/* ====== Loading Spinner ====== */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ====== Utility ====== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-info { color: var(--info); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-100 { width: 100%; }
.hidden { display: none !important; }