:root {
    --bg-color: #0a0a0a;
    --surface-color: #141414;
    --border-color: #333333;
    --text-main: #e0e0e0;
    --text-muted: #888888;
    --accent: #ffffff;
    --font-ui: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-ui);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* --- Header & Navigation --- */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--surface-color);
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    letter-spacing: 2px;
}

nav {
    display: flex;
    gap: 1rem;
}

button {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.nav-btn {
    padding: 0.5rem 1rem;
    border: 1px solid transparent;
}

.nav-btn:hover, .nav-btn.active {
    color: var(--accent);
    border-color: var(--border-color);
}

/* --- Layout --- */
main {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.view {
    display: none;
    max-width: 1000px;
    margin: 0 auto;
}

.view.active {
    display: block;
}

/* --- Typography --- */
h1 {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 4px;
    margin-bottom: 0.5rem;
}

h2 {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.node-count {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.node-count #node-count-number {
    color: var(--accent);
    font-weight: 600;
}

/* --- The Hub --- */
.hub-header {
    margin-bottom: 3rem;
}

.cta-banner {
    margin-top: 2rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.action-btn {
    border: 1px solid var(--text-main);
    color: var(--text-main);
    padding: 0.75rem 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.action-btn:hover {
    background-color: var(--text-main);
    color: var(--bg-color);
}

.node-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.node-card {
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    background-color: var(--surface-color);
    transition: border-color 0.2s;
    cursor: pointer;
}

.node-card:hover {
    border-color: var(--text-muted);
}

.node-id {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

/* --- Forms --- */
.form-container {
    max-width: 700px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    padding: 2rem;
    background-color: var(--surface-color);
}

.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-group.separator {
    border-top: 1px dashed var(--border-color);
    margin: 2rem 0;
}

label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

input[type="text"], textarea {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.75rem;
    font-family: var(--font-ui);
    resize: vertical;
}

input[type="text"]:focus, textarea:focus {
    outline: none;
    border-color: var(--text-muted);
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

/* --- Information View --- */
.content-container {
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    padding: 3rem;
    background-color: var(--surface-color);
}

.text-block p {
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 1.5rem;
}

.retro-list {
    list-style-type: none;
    counter-reset: custom-counter;
    margin: 2rem 0 2rem 1rem;
    border-left: 1px dashed var(--border-color);
    padding-left: 1.5rem;
}

.retro-list li {
    position: relative;
    margin-bottom: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-muted);
}

.retro-list li::before {
    counter-increment: custom-counter;
    content: "(" counter(custom-counter) ") ";
    position: absolute;
    left: -3rem; /* Aligns the numbers nicely outside the dashed border */
    width: 2rem;
    text-align: right;
    color: var(--accent);
}

.retro-list li span {
    color: var(--text-main);
    font-family: var(--font-ui);
}