:root {
    /* Røsstad Palette */
    --color-forest: #1a472a;
    --color-sea: #0f2b3e;
    --color-moss: #88a090;
    --color-bg-light: #f4f7f5;
    --color-bg-dark: #121212;
    --color-text-light: #ffffff;
    --color-text-dark: #333333;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

body {
    margin: 0;
    font-family: 'Outfit', 'Segoe UI', sans-serif;
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    transition: background-color 0.3s, color 0.3s;
    overflow: hidden;
    /* Prevent body scroll, handle in containers */
}

body.dark-mode {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
}

/* Glassmorphism Utilities */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.glass-panel {
    background: rgba(255, 255, 255, 0.05);
    /* Slightly more opaque */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow);
    border-radius: 16px;
}

/* Navigation */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-forest);
}

body.dark-mode .nav-brand {
    color: var(--color-moss);
}

.nav-tabs {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    cursor: pointer;
    color: inherit;
    border-radius: 8px;
    transition: background 0.2s;
}

.nav-btn.active {
    background: var(--color-forest);
    color: white;
}

.nav-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.icon-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: inherit;
}

.text-btn {
    background: none;
    border: 1px solid currentColor;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    color: inherit;
}

/* Main Content */
#main-content {
    margin-top: 80px;
    /* Space for nav */
    height: calc(100vh - 80px);
    position: relative;
}

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

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

/* Tree View */
#tree-container {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: 0 0;
    /* Zoom from top-left */
    cursor: grab;
    pointer-events: none;
    /* Let clicks pass to #tree-tab */
}

#tree-container:active {
    cursor: grabbing;
}

#relationship-lines {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    /* Let clicks pass through to cards */
}

#family-cards-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    /* Let clicks pass to #tree-tab */
}

.family-card {
    position: absolute;
    width: 220px;
    height: 100px;
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--color-moss);
    border-radius: 12px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    color: inherit;
    pointer-events: auto;
    /* Re-enable clicking for cards */
}

.family-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.15);
}

.card-avatar {
    font-size: 2rem;
    margin-bottom: 5px;
}

.card-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.card-dates {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* FAB */
.fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--color-forest);
    color: white;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s;
}

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

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

/* History */
.history-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    overflow-y: auto;
    height: 100%;
}

#history-list {
    list-style: none;
    padding: 0;
    border-left: 2px solid var(--color-moss);
}

.history-item {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    position: relative;
}

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

.history-year {
    font-weight: bold;
    color: var(--color-moss);
    margin-right: 0.5rem;
}

/* Modals */
.modal {
    display: none;
    /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    width: 90%;
    max-width: 500px;
    padding: 2rem;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

input,
select,
textarea {
    width: 100%;
    padding: 0.8rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(0, 0, 0, 0.2);
    color: inherit;
    font-family: inherit;
    box-sizing: border-box;
    /* Fix padding issues */
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-moss);
    background: rgba(0, 0, 0, 0.3);
}

.primary-btn {
    width: 100%;
    padding: 1rem;
    background: var(--color-forest);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 1rem;
}

.primary-btn:hover {
    background: #235c38;
}

.error-msg {
    color: #ff6b6b;
    margin-top: 1rem;
    text-align: center;
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 1.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

input[type="radio"] {
    width: auto;
    margin: 0;
}

#tree-tab {
    overflow: hidden;
    /* Infinite canvas, no native scroll */
    position: relative;
    cursor: grab;
    width: 100%;
    height: 100%;
    user-select: none;
    /* Prevent text selection during drag */
}

#tree-tab:active {
    cursor: grabbing;
}