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

html, body {
    height: 100%;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--surface-alt);
    overflow: hidden;

    /* Brand palette */
    --color-mid-green: #5a7826;
    --color-dark-green: #4f583c;
    --color-light-green: #95c23d;
    --color-hr: #d7af19;
    --color-energie: #b83844;
    --color-marcom: #c74771;
    --color-tech: #805c8f;
    --color-fin: #5488c7;
    --color-bi: #dd7522;

    /* Semantic tokens */
    --brand-bg: var(--color-dark-green);
    --brand-primary: var(--color-mid-green);
    --brand-primary-600: #4d6821;
    --brand-secondary: var(--color-light-green);
    --brand-accent: var(--color-light-green);
    --brand-warning: var(--color-hr);
    --brand-danger: var(--color-energie);

    /* Text & surfaces */
    --text: #1e2418;
    --text-inverse: #ffffff;
    --muted: #5f6657;
    --border: #d9e0cf;
    --surface: #ffffff;
    --surface-alt: #f5f8f0;
    --surface-2: #f2f6ec;

    /* Radius & shadows */
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 1px 2px rgba(25, 35, 14, .08);
    --shadow: 0 6px 22px -4px rgba(30, 40, 20, .18);
}

/* Navbar */
.navbar {
    background: linear-gradient(175deg,
        color-mix(in oklab, var(--brand-bg), var(--brand-primary) 8%) 0%,
        var(--brand-bg) 40%,
        color-mix(in oklab, var(--brand-bg), #000 18%) 100%);
    height: 64px;
    box-shadow: 4px 0 24px -8px rgba(0, 0, 0, 0.35);
    border-bottom: 1px solid color-mix(in oklab, var(--brand-primary), #000 30%);
    padding: 0 40px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    z-index: 10;
}

/* Subtle glow effect at the top-left */
.navbar::before {
    content: '';
    position: absolute;
    top: -40px;
    left: -10%;
    width: 50%;
    height: 200px;
    background: radial-gradient(ellipse at top left,
        color-mix(in oklab, var(--brand-primary), transparent 55%) 0%,
        transparent 65%);
    pointer-events: none;
    z-index: 0;
    opacity: .7;
}

/* Bottom-right fade effect */
.navbar::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 40%;
    background: linear-gradient(to left,
        color-mix(in oklab, var(--brand-bg), #000 20%) 0%,
        transparent 100%);
    pointer-events: none;
    z-index: 0;
}

.navbar-container {
    display: flex;
    align-items: center;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 1;
}

.navbar-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo {
    height: 66px;
    width: auto;
}

.navbar-tabs {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    justify-content: center;
}

.tab {
    background: color-mix(in oklab, #fff, transparent 96%);
    border: 1px solid color-mix(in oklab, #fff, transparent 92%);
    color: color-mix(in oklab, #fff, var(--color-light-green) 8%);
    font-size: 14px;
    font-weight: 500;
    padding: 9px 22px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s cubic-bezier(.4, 0, .2, 1);
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 6px;
    position: relative;
}

.tab-icon {
    height: 18px;
    width: auto;
    border-radius: 3px;
}

.tab-logo {
    height: 28px;
    width: auto;
    object-fit: contain;
    border-radius: 3px;
    margin: -6px 0;
}

.tab:hover {
    color: #ffffff;
    background: linear-gradient(90deg,
        color-mix(in oklab, var(--brand-primary), transparent 55%),
        color-mix(in oklab, var(--brand-primary-600), transparent 70%));
    border-color: color-mix(in oklab, #fff, transparent 85%);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.tab:active {
    transform: translateY(0px);
    box-shadow: none;
}

.tab.active {
    color: #ffffff;
    background: color-mix(in oklab, var(--brand-primary), transparent 45%);
    border-color: color-mix(in oklab, var(--color-light-green), transparent 60%);
    font-weight: 600;
    box-shadow: 0 0 12px color-mix(in oklab, var(--color-light-green), transparent 75%);
}

/* Content / iframe */
.content {
    height: calc(100vh - 64px);
    width: 100%;
    padding: 0;
    background: linear-gradient(160deg, var(--surface-alt) 0%, var(--surface-2) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Loading overlay */
.loading-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, var(--surface-alt) 0%, var(--surface-2) 100%);
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.loading-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--brand-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.content-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.report-frame {
    height: 100%;
    border: none;
    background-color: var(--surface);
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    border-radius: 2px;
    box-shadow: var(--shadow);
    /* Standaard 16:9 */
    max-width: calc((100vh - 64px) * 16 / 9);
    width: 100%;
}

.report-frame.active {
    opacity: 1;
    pointer-events: auto;
}

/* Financiën rapport: breder formaat + opschalen */
#frame-financien {
    max-width: 100%;
    transform: translateX(-50%) scale(1.42);
    transform-origin: center center;
}