/* ==========================================================================
   VETENTRUSTED ACADEMY - PRESENTATION & DASHBOARD STYLES
   ========================================================================== */

/* --- 1. Globale Variabelen (Thema & Kleuren) --- */
:root {
    /* Kleurpalet */
    --bg-main: #f8fafc; /* Lichte dashboard achtergrond */
    --bg-presentation: #020617; /* Diepblauwe/zwarte presentatie basis */
    --bg-slide-gradient: radial-gradient(circle at top right, #1e293b, #0f172a);
    --bg-glass: rgba(30, 41, 59, 0.6);
    /* Accenten (Gebaseerd op medisch/educatief thema) */
    --color-teal: #2dd4bf; /* Primair accent */
    --color-teal-hover: #14b8a6;
    --color-gold: #fbbf24; /* Secundair / Highlight */
    --color-danger: #f87171; /* Fout/Waarschuwing */
    --color-success: #34d399; /* Correct/Succes */
    /* Typografie Kleuren */
    --color-text-dark: #1e293b; /* Tekst op licht dashboard */
    --color-text-light: #f8fafc; /* Tekst op donkere presentatie */
    --color-muted: #94a3b8; /* Subtekst */
    /* Effecten */
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-subtle: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 0 15px rgba(45, 212, 191, 0.3);
    /* Typografie Fonts */
    --font-sans: 'Lato', system-ui, -apple-system, sans-serif;
    --font-heading: 'Poppins', var(--font-sans);
}

/* --- 2. Globale Resets & Basis --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--color-text-dark);
    line-height: 1.6;
    transition: background-color 0.5s ease-in-out;
    -webkit-font-smoothing: antialiased;
}

    /* MAGIC: Achtergrond wordt donker zodra de presentatie actief is */
    body:has(.presentation-wrapper) {
        background-color: var(--bg-presentation) !important;
        overflow: hidden; /* Voorkom dubbele scrollbars op body niveau */
    }

/* --- 3. Custom Scrollbars voor Presentatie --- */
.presentation-wrapper *::-webkit-scrollbar {
    width: 8px;
}

.presentation-wrapper *::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.presentation-wrapper *::-webkit-scrollbar-thumb {
    background: var(--color-muted);
    border-radius: 4px;
}

    .presentation-wrapper *::-webkit-scrollbar-thumb:hover {
        background: var(--color-teal);
    }

/* --- 4. Presentatie Layout (De Container) --- */
.presentation-wrapper {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: var(--bg-slide-gradient);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    color: var(--color-text-light);
    z-index: 9999;
    backdrop-filter: blur(10px); /* Nis2/Moderne uitstraling */
}

/* Header binnen presentatie (bijv. voor logo of sluitknop) */
.presentation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    height: 80px;
    z-index: 10;
}

.btn-close-presentation {
    background: transparent;
    border: none;
    color: var(--color-muted);
    font-size: 2rem;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
}

    .btn-close-presentation:hover,
    .btn-close-presentation:focus-visible {
        color: var(--color-danger);
        transform: scale(1.1);
        outline: none;
    }

/* --- 5. Slides & Animaties --- */
.content-area {
    flex-grow: 1;
    display: flex;
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    position: relative; /* Nodig voor absolute positionering van slides tijdens transitie */
    overflow: hidden;
}

.slide {
    display: none;
    width: 100%;
    height: 100%;
    padding: 20px 60px 100px 60px; /* Ruimte onderaan voor controls */
    flex-direction: column;
    overflow-y: auto;
    position: absolute;
    top: 0;
    left: 0;
}

    /* Actieve slide tonen */
    .slide.active {
        display: flex;
        animation: fadeInScale 0.5s ease-out forwards;
    }

    /* Speciale layout voor Splash/Titel slides */
    .slide.chapter-splash {
        justify-content: center;
        align-items: center;
        text-align: center;
    }

/* Animaties */
@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.98) translateY(10px);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* --- 6. Typografie binnen Presentatie --- */
.presentation-wrapper h1,
.presentation-wrapper h2,
.presentation-wrapper h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.presentation-wrapper h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    color: var(--color-teal);
    line-height: 1.2;
    text-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.presentation-wrapper h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--color-text-light);
    border-bottom: 2px solid var(--color-teal);
    padding-bottom: 10px;
    display: inline-block;
}

.presentation-wrapper h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--color-gold);
}

.presentation-wrapper .lead {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--color-muted);
    max-width: 800px;
    margin-bottom: 2rem;
}

.presentation-wrapper p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    max-width: 1000px;
}

/* --- 7. Componenten: Glassmorphism Panelen --- */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    margin-bottom: 20px;
}

.info-box {
    border-left: 4px solid var(--color-teal);
    background: rgba(45, 212, 191, 0.1);
    padding: 20px;
    border-radius: 0 12px 12px 0;
    margin: 20px 0;
}

    .info-box.warning {
        border-left-color: var(--color-gold);
        background: rgba(251, 191, 36, 0.1);
    }

/* Multikolom layout voor tekst + afbeeldingen */
.slide-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    width: 100%;
}

/* Afbeeldingen en Media */
.presentation-media {
    width: 100%;
    max-height: 60vh;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 1px solid var(--glass-border);
}

/* --- 8. Navigatie Controls (Bottom Bar) --- */
.controls-container {
    position: fixed;
    bottom: 30px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    pointer-events: none; /* Zorgt dat je naast de controls nog kunt klikken */
    z-index: 9999;
}

.controls {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(10px);
    padding: 12px 30px;
    border-radius: 50px;
    border: 1px solid rgba(45, 212, 191, 0.3);
    box-shadow: 0 10px 30px rgba(0,0,0,0.6), var(--shadow-glow);
    transition: transform 0.3s ease;
}

    .controls:hover {
        transform: translateY(-5px);
    }

.nav-btn {
    background: transparent;
    border: none;
    color: var(--color-teal);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 30px;
    transition: all 0.2s ease;
}

    .nav-btn:hover:not(:disabled) {
        background: rgba(45, 212, 191, 0.1);
        color: var(--color-text-light);
    }

    /* WCAG: Focus ring voor toetsenbord gebruikers */
    .nav-btn:focus-visible {
        outline: 2px solid var(--color-gold);
        outline-offset: 2px;
    }

    .nav-btn:disabled {
        color: rgba(148, 163, 184, 0.3);
        cursor: not-allowed;
    }

.slide-counter {
    color: var(--color-text-light);
    font-size: 1rem;
    font-weight: 700;
    font-family: var(--font-sans);
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 20px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    letter-spacing: 1px;
}

/* Progress bar aan de bovenkant van de slide */
.presentation-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--color-teal);
    width: 0%;
    z-index: 10000;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--color-teal);
}

/* --- 9. Dashboard Extra's (Onafhankelijk van Presentatie) --- */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
}

    .hover-lift:hover {
        transform: translateY(-8px);
        box-shadow: 0 15px 30px rgba(0,0,0,0.1) !important;
    }

/* Strakke Bootstrap overschrijving voor algemene progress bars */
.progress {
    border-radius: 50px;
    background-color: #e2e8f0;
    height: 10px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}

.progress-bar {
    background: linear-gradient(90deg, var(--color-teal), #3b82f6);
    transition: width 0.6s ease;
}

/* --- 10. Responsiveness (Mobiel & Tablet Algemeen) --- */
@media (max-width: 1024px) {
    .slide-grid-2 {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .presentation-header {
        padding: 15px 20px;
        height: 60px;
    }

    .slide {
        padding: 20px 20px 100px 20px;
    }

    .slide-grid-2 {
        grid-template-columns: 1fr; /* Stack columns on mobile */
    }

    .glass-panel {
        padding: 20px;
    }

    .controls {
        padding: 10px 20px;
        gap: 10px;
        width: 90%;
        justify-content: space-between;
    }

    .nav-btn span {
        display: none; /* Verberg de tekst 'Vorige'/'Volgende' op kleine schermen */
    }
}

/* ==========================================================================
   11. BRUTE-FORCE MOBIELE NAVIGATIE & SIDEBARS
   ========================================================================== */

/* De Mobiele Header */
.mobile-header {
    position: sticky !important;
    top: 0 !important;
    z-index: 1040 !important;
}

/* Desktop weergave (Vanaf lg / 992px) */
@media (min-width: 992px) {
    .sidebar-left {
        width: 280px !important;
        flex-shrink: 0 !important;
        z-index: 1000 !important;
        display: block !important;
        transform: none !important;
        position: static !important;
    }

    .sidebar-right {
        width: 320px !important;
        flex-shrink: 0 !important;
        z-index: 1000 !important;
        display: block !important;
        transform: none !important;
        position: static !important;
    }

        .sidebar-right.collapsed-desktop {
            display: none !important;
        }
}

/* Mobiele Off-Canvas weergave (Onder lg / 992px) */
@media (max-width: 991.98px) {
    /* Keiharde override via ID selectors om Bootstrap .d-none te slopen */
    #sidebar-left,
    #sidebar-right {
        position: fixed !important;
        top: 0 !important;
        height: 100dvh !important;
        z-index: 1050 !important;
        width: 85vw !important;
        max-width: 320px !important;
        background-color: var(--bg-main) !important;
        box-shadow: 0 0 25px rgba(0,0,0,0.5) !important;
        overflow-y: auto !important;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
        /* Dit garandeert dat de sidebar niet verborgen is door een verdwaalde Bootstrap class */
        display: block !important;
        visibility: visible !important;
    }

    #sidebar-left {
        left: 0 !important;
        transform: translateX(-100%) !important; /* Buiten beeld */
    }

    #sidebar-right {
        right: 0 !important;
        transform: translateX(100%) !important; /* Buiten beeld */
    }

        /* Actieve staat: schuif in beeld */
        #sidebar-left.mobile-open,
        #sidebar-right.mobile-open {
            transform: translateX(0) !important;
        }
}

/* De Backdrop */
.mobile-backdrop {
    position: fixed !important;
    inset: 0 !important;
    background-color: rgba(15, 23, 42, 0.6) !important;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    z-index: 1045 !important;
    transition: opacity 0.3s ease-in-out !important;
}

/* Als hij d-none is, moet hij onzichtbaar zijn en NIET te klikken */
#mobile-backdrop.d-none,
#mobile-backdrop-right.d-none {
    opacity: 0 !important;
    pointer-events: none !important;
    display: block !important; /* Voorkomt abrupte display: none zodat de fade werkt */
}

/* Als hij open is, moet je er op kunnen klikken om te sluiten */
#mobile-backdrop:not(.d-none),
#mobile-backdrop-right:not(.d-none) {
    opacity: 1 !important;
    pointer-events: auto !important;
}