/* ============================================
   BEREMA CONSULTANCY — DIRECTIERAPPORTAGE
   Huisstijl: #002605 #006240 #CDAA50
   Font: Inter
   ============================================ */

:root {
    --berema-dark: #002605;
    --berema-green: #006240;
    --berema-gold: #CDAA50;
    --berema-gold-light: #e8d5a0;
    --bg-light: #F4F5F7;
    --bg-white: #FFFFFF;
    --text-dark: #1a2332;
    --text-secondary: #5a6a7e;
    --text-muted: #8A9BB0;
    --border: #e2e6ec;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --radius: 10px;
    --radius-lg: 14px;
    --green: #16a34a;
    --orange: #ea8c00;
    --red: #dc2626;
    --sidebar-width: 260px;
    --topbar-height: 64px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============================================
   SIDEBAR
   ============================================ */
#sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--berema-dark);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-logo {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-logo img {
    height: 36px;
    width: auto;
    filter: brightness(0) invert(1);
}

.nav-menu {
    list-style: none;
    padding: 12px 0;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255,255,255,0.6);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
    font-weight: 500;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    color: rgba(255,255,255,0.9);
    background: rgba(255,255,255,0.05);
}

.nav-item.active {
    color: var(--berema-gold);
    background: rgba(205,170,80,0.08);
    border-left-color: var(--berema-gold);
}

.nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.version {
    font-size: 11px;
    color: rgba(255,255,255,0.3);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
#main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

#topbar {
    height: var(--topbar-height);
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 32px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 50;
}

#menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-dark);
}

#menu-toggle svg {
    width: 24px;
    height: 24px;
}

#page-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--berema-dark);
    flex: 1;
}

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

.status-badge {
    font-size: 12px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 20px;
}

.status-empty {
    background: #fef2f2;
    color: var(--red);
}

.status-loaded {
    background: #f0fdf4;
    color: var(--green);
}

#last-update {
    font-size: 12px;
    color: var(--text-muted);
}

/* ============================================
   PAGES
   ============================================ */
.page {
    display: none;
    padding: 0;
}

.page.active {
    display: block;
}

.page-content {
    padding: 24px 32px;
    max-width: 1600px;
}

.hidden {
    display: none !important;
}

/* ============================================
   UPLOAD PAGE
   ============================================ */
.upload-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - var(--topbar-height));
    padding: 32px;
}

.upload-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 48px;
    text-align: center;
    max-width: 520px;
    width: 100%;
}

.upload-logo {
    height: 96px;
    margin-bottom: 24px;
}

.upload-card h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--berema-dark);
    margin-bottom: 8px;
}

.upload-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 40px 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--berema-green);
    background: rgba(0,98,64,0.03);
}

.drop-icon {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.drop-zone:hover .drop-icon,
.drop-zone.dragover .drop-icon {
    color: var(--berema-green);
}

.drop-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
}

.drop-subtext {
    font-size: 13px;
    color: var(--text-muted);
}

.upload-status {
    margin-top: 16px;
    font-size: 14px;
    min-height: 24px;
}

.upload-status.success {
    color: var(--green);
}

.upload-status.error {
    color: var(--red);
}

.demo-link {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.btn-link {
    background: none;
    border: none;
    color: var(--berema-green);
    font-size: 13px;
    cursor: pointer;
    text-decoration: underline;
    font-family: inherit;
}

.btn-link:hover {
    color: var(--berema-dark);
}

/* ============================================
   KPI CARDS
   ============================================ */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--berema-green);
}

.kpi-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.kpi-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--berema-dark);
}

.kpi-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-top: 8px;
}

.kpi-indicator.green { background: var(--green); }
.kpi-indicator.orange { background: var(--orange); }
.kpi-indicator.red { background: var(--red); }

/* ============================================
   FILTER ROW
   ============================================ */
.filter-row {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

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

.filter-group label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-group select {
    font-family: inherit;
    font-size: 14px;
    padding: 8px 32px 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-white);
    color: var(--text-dark);
    cursor: pointer;
    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='%238A9BB0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    min-width: 160px;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--berema-green);
    box-shadow: 0 0 0 3px rgba(0,98,64,0.1);
}

/* ============================================
   CHART CARDS
   ============================================ */
.charts-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.charts-row .chart-card.wide {
    grid-column: auto;
}

.chart-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.chart-card h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.chart-card canvas {
    width: 100% !important;
    max-height: 320px;
}

/* ============================================
   TABLE CARDS
   ============================================ */
.table-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    margin-bottom: 24px;
}

.table-card h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.table-scroll {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

thead th {
    text-align: left;
    padding: 10px 12px;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-dark);
}

tbody tr:hover {
    background: rgba(0,98,64,0.02);
}

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

/* Stoplicht dots in table */
.stoplicht {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.stoplicht.groen { background: var(--green); }
.stoplicht.oranje { background: var(--orange); }
.stoplicht.rood { background: var(--red); }

.cell-negative { color: var(--red); font-weight: 600; }
.cell-positive { color: var(--green); font-weight: 600; }

/* Progress bar */
.progress-bar {
    width: 80px;
    height: 8px;
    background: var(--bg-light);
    border-radius: 4px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
    margin-right: 6px;
}

.progress-fill {
    height: 100%;
    background: var(--berema-green);
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* ============================================
   INFO CARD
   ============================================ */
.info-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    border-left: 4px solid var(--berema-gold);
    margin-bottom: 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.info-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.info-value {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .charts-row {
        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-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .kpi-value {
        font-size: 18px;
    }

    #topbar {
        padding: 0 16px;
    }

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

    .filter-group select {
        min-width: 100%;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    #sidebar { display: none; }
    #main-content { margin-left: 0; }
    #topbar { position: static; }
    .page { display: block !important; page-break-after: always; }
    .page:not(.active) { display: none !important; }
    .filter-row { display: none; }
    .kpi-card { break-inside: avoid; }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.page.active .kpi-card,
.page.active .chart-card,
.page.active .table-card {
    animation: fadeIn 0.3s ease forwards;
}

.page.active .kpi-card:nth-child(2) { animation-delay: 0.05s; }
.page.active .kpi-card:nth-child(3) { animation-delay: 0.1s; }
.page.active .kpi-card:nth-child(4) { animation-delay: 0.15s; }
.page.active .kpi-card:nth-child(5) { animation-delay: 0.2s; }
.page.active .kpi-card:nth-child(6) { animation-delay: 0.25s; }

/* ============================================
   LOGIN SCREEN
   ============================================ */
#login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--berema-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

#login-screen.hidden {
    display: none;
}

.login-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    padding: 48px;
    text-align: center;
    width: 100%;
    max-width: 420px;
    margin: 16px;
}

.login-logo {
    height: 80px;
    margin-bottom: 24px;
}

.login-card h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--berema-dark);
    margin-bottom: 6px;
}

.login-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.login-field {
    text-align: left;
    margin-bottom: 16px;
}

.login-field label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.login-field input {
    width: 100%;
    padding: 12px 14px;
    font-family: inherit;
    font-size: 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-light);
    color: var(--text-dark);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.login-field input:focus {
    outline: none;
    border-color: var(--berema-green);
    box-shadow: 0 0 0 3px rgba(0,98,64,0.1);
    background: var(--bg-white);
}

.login-error {
    font-size: 13px;
    color: var(--red);
    min-height: 20px;
    margin-bottom: 8px;
}

.login-btn {
    width: 100%;
    padding: 14px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: var(--berema-green);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
}

.login-btn:hover {
    background: var(--berema-dark);
}

.login-btn:active {
    transform: scale(0.98);
}