:root {
    --bg-deep: #020617; /* Dyp, mørk romfarge */
    --card-bg: rgba(30, 41, 59, 0.6); /* Frostet glass-effekt */
    --card-border: rgba(255, 255, 255, 0.1);
    --primary: #22d3ee; /* Cyan/blå glød */
    --secondary: #8b5cf6; /* Lilla glød */
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --hint-bg: rgba(245, 158, 11, 0.1);
    --hint-border: #f59e0b;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Animert og dyp bakgrunn */
body {
    background-color: var(--bg-deep);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(34, 211, 238, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.08), transparent 25%);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigasjon */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(12px);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-btn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-muted);
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-btn:hover, .nav-btn.active {
    color: #fff;
    text-shadow: 0 0 10px rgba(34, 211, 238, 0.5);
}

.profile-btn {
    border: 1px solid var(--primary);
    border-radius: 20px;
    padding: 0.4rem 1.2rem;
    box-shadow: 0 0 15px rgba(34, 211, 238, 0.2);
}

/* Layout */
#app-content {
    display: flex;
    max-width: 1200px;
    margin: 3rem auto;
    gap: 2.5rem;
    padding: 0 1.5rem;
}

/* Sidemeny (Glassmorphism) */
.sidebar {
    width: 280px;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    align-self: flex-start;
    position: sticky;
    top: 100px;
}

.sidebar h3 {
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    color: #fff;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.5rem;
}

#chapter-list {
    list-style: none;
}

.chapter-btn {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 0.8rem 1rem;
    cursor: pointer;
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-muted);
    transition: all 0.2s ease;
    margin-bottom: 0.5rem;
}

.chapter-btn:hover, .chapter-btn.active {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border-left: 3px solid var(--primary);
    box-shadow: inset 5px 0 15px rgba(34, 211, 238, 0.1);
}

/* Hovedinnhold */
.content-area {
    flex: 1;
}

/* Oppgavekort (3D og Hover-effekter) */
.task-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    padding: 2.5rem;
    border-radius: 16px;
    margin-bottom: 2.5rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    transform: translateY(0);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
}

.task-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(34, 211, 238, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
}

.task-title {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.4rem;
    letter-spacing: 0.5px;
    text-shadow: 0 0 15px rgba(34, 211, 238, 0.3);
}

.task-image {
    max-width: 100%;
    border-radius: 8px;
    margin: 1.5rem 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}

/* Glødende knapper */
/* Container for knappene */
.task-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

/* Glødende knapper */
.hint-btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
    transition: all 0.3s ease;
    margin-top: 0;
}

.hint-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(34, 211, 238, 0.6);
}

.fasit-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.fasit-btn:hover {
    box-shadow: 0 0 25px rgba(16, 185, 129, 0.6);
}

/* Styling for innhold (Hint og Fasit) */
.hint-content, .solution-content {
    display: none;
    padding: 1.2rem;
    margin-top: 1.2rem;
    border-radius: 0 8px 8px 0;
}

.hint-content {
    background-color: var(--hint-bg);
    border-left: 4px solid var(--hint-border);
    color: #fcd34d;
    font-style: italic;
}

.solution-content {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 4px solid #34d399;
    color: #e2e8f0;
    font-style: normal;
}

.solution-content strong {
    color: #6ee7b7;
    font-size: 1.1rem;
}

.hint-content.visible, .solution-content.visible {
    display: block;
    animation: fadeIn 0.4s ease forwards;
}

.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
/* Ukeplan Banner */
#ukesplan-banner {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid var(--primary);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    margin-bottom: 2.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), inset 0 0 20px rgba(34, 211, 238, 0.05);
}

.banner-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
}

.week-badge {
    background: var(--primary);
    color: #000;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 900;
    font-size: 1.2rem;
    box-shadow: 0 0 15px rgba(34, 211, 238, 0.6);
}

#week-text {
    font-size: 1.1rem;
    color: var(--text-main);
    flex: 1;
    font-weight: 500;
}

#week-link-btn {
    margin-top: 0;
    white-space: nowrap;
}
/* Layout for visninger */
.view-section {
    display: flex;
    width: 100%;
    gap: 2.5rem;
}

.view-section.hidden {
    display: none !important;
}

.content-area.full-width {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

/* Styling av kodeblokker i Python-stil */
pre {
    background-color: #0f172a;
    padding: 1.2rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #38bdf8;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 1.5rem 0;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.3);
}

code {
    font-family: 'Courier New', Courier, monospace;
    background-color: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: #7dd3fc;
}

/* Fjerner bakgrunn på inline-code som ligger inni en pre-blokk */
pre code {
    background-color: transparent;
    padding: 0;
    color: #38bdf8;
}