:root {
    /* Color Palette */
    --color-forest: #1a472a;
    /* Hovedfarge - Dyp skogsgrønn */
    --color-sea: #0f2b3e;
    /* Sekundærfarge - Mørk blågrønn/skifer */
    --color-moss: #88a090;
    /* Aksentfarge - Lav/Mose */
    --color-light-bg: #f4f7f5;
    /* Bakgrunn Light Mode - Tåke */
    --color-dark-bg: #121212;
    /* Bakgrunn Dark Mode - Dyp natt */
    --color-text-light: #121212;
    --color-text-dark: #f4f7f5;
    --color-white: #ffffff;
    --color-error: #e74c3c;

    /* Fonts */
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    /* Spacing */
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;

    /* Transitions */
    --transition-speed: 0.3s;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-light-bg);
    color: var(--color-text-light);
    transition: background-color var(--transition-speed), color var(--transition-speed);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Dark Mode */
body.dark-mode {
    background-color: var(--color-dark-bg);
    color: var(--color-text-dark);
}

/* Navigation */
.top-nav {
    background-color: var(--color-forest);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 100;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 1px;
}

.nav-tabs {
    display: flex;
    gap: var(--spacing-md);
}

.nav-btn {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    transition: all var(--transition-speed);
}

.nav-btn:hover,
.nav-btn.active {
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.icon-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--color-white);
}

.text-btn {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: var(--color-white);
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
}

.text-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Main Content */
#main-content {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.tab-content {
    display: none;
    height: 100%;
    width: 100%;
}

.tab-content.active {
    display: block;
}

/* Tree View */
#tree-container {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: auto;
    /* Allow scrolling if tree is large */
    background-image: radial-gradient(circle, #ddd 1px, transparent 1px);
    /* Grid dots */
    background-size: 20px 20px;
}

body.dark-mode #tree-container {
    background-image: radial-gradient(circle, #333 1px, transparent 1px);
}

#relationship-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    /* Will need to update dynamically via JS */
    height: 100%;
    pointer-events: none;
    /* Let clicks pass through to cards */
    z-index: 0;
}

.family-card {
    position: absolute;
    background-color: var(--color-white);
    color: var(--color-text-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    width: 200px;
    text-align: center;
    cursor: pointer;
    z-index: 1;
    border: 2px solid transparent;
    transition: transform 0.2s, box-shadow 0.2s;
}

body.dark-mode .family-card {
    background-color: var(--color-sea);
    color: var(--color-white);
    border: 1px solid var(--color-moss);
}

.family-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
    border-color: var(--color-forest);
}

.card-name {
    font-weight: bold;
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.card-dates {
    font-size: 0.9rem;
    color: #666;
}

body.dark-mode .card-dates {
    color: #aaa;
}

/* Map View */
#map {
    width: 100%;
    height: 100%;
}

/* History View */
.history-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    overflow-y: auto;
    height: 100%;
}

#history-list {
    list-style: none;
    border-left: 2px solid var(--color-moss);
    padding-left: var(--spacing-lg);
}

.history-item {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.history-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-lg) - 5px);
    top: 6px;
    width: 10px;
    height: 10px;
    background-color: var(--color-forest);
    border-radius: 50%;
}

.history-year {
    font-weight: bold;
    color: var(--color-moss);
}

/* Floating Action Button */
.fab {
    position: absolute;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--color-forest);
    color: var(--color-white);
    border: none;
    font-size: 24px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s;
    z-index: 10;
}

.fab:hover {
    transform: scale(1.1);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    position: relative;
}

body.dark-mode .modal-content {
    background-color: var(--color-sea);
    color: var(--color-white);
    border: 1px solid var(--color-moss);
}

.close-modal {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-md);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: flex;
    gap: var(--spacing-md);
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 4px;
    font-weight: 500;
}

input,
textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-family: inherit;
}

body.dark-mode input,
body.dark-mode textarea {
    background-color: rgba(0, 0, 0, 0.2);
    border-color: var(--color-moss);
    color: var(--color-white);
}

.primary-btn {
    background-color: var(--color-forest);
    color: var(--color-white);
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    font-size: 1rem;
    margin-top: var(--spacing-md);
}

.primary-btn:hover {
    background-color: #143620;
}

.error-msg {
    color: var(--color-error);
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
}