:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a2e;
    --accent: #00d4ff;
    --accent-dim: #0099bb;
    --accent-glow: rgba(0, 212, 255, 0.15);
    --text-primary: #e0e0e0;
    --text-secondary: #8888aa;
    --text-bright: #ffffff;
    --danger: #ff4466;
    --success: #00ff88;
    --border: #2a2a3e;
    --font-mono: 'Courier New', monospace;
}

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header */
header {
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0;
    padding-bottom: 0;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

nav a {
    margin-left: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color 0.2s;
}
nav a:hover { color: var(--accent); text-decoration: none; }

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 1.4rem;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
}

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 0 3rem;
}

.hero h1 {
    font-size: 2.8rem;
    color: var(--text-bright);
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
}

.hero .tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero .mission {
    max-width: 600px;
    margin: 0 auto 2.5rem;
    color: var(--text-primary);
    font-size: 1.05rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border: 2px solid var(--accent);
    color: var(--accent);
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    background: transparent;
    font-family: var(--font-mono);
}

.btn:hover {
    background: var(--accent);
    color: var(--bg-primary);
    text-decoration: none;
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-solid {
    background: var(--accent);
    color: var(--bg-primary);
}

.btn-solid:hover {
    background: var(--accent-dim);
    border-color: var(--accent-dim);
}

.btn-small {
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
}

.card h3 {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Forms */
.form-wrap {
    max-width: 440px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
}

.form-wrap h2 {
    text-align: center;
    color: var(--text-bright);
    font-family: var(--font-mono);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
    font-family: var(--font-mono);
}

.form-group input {
    width: 100%;
    padding: 0.65rem 0.8rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--accent);
}

.form-wrap .btn {
    width: 100%;
    margin-top: 0.5rem;
}

.form-footer {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert-error {
    background: rgba(255, 68, 102, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-success {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

/* Welcome Dashboard */
.welcome-header {
    text-align: center;
    padding: 2rem 0;
}

.welcome-header h1 {
    color: var(--text-bright);
    font-family: var(--font-mono);
}

.welcome-header .level {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    margin-top: 0.3rem;
}

.progress-bar {
    background: var(--bg-secondary);
    border-radius: 4px;
    height: 8px;
    margin: 1.5rem auto;
    max-width: 400px;
    overflow: hidden;
}

.progress-bar .fill {
    background: var(--accent);
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s;
}

.steps-list {
    list-style: none;
    max-width: 500px;
    margin: 1.5rem auto;
}

.steps-list li {
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.steps-list li .marker {
    display: inline-block;
    width: 1.5rem;
    color: var(--accent);
}

/* Stats */
.stats-row {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat .number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
}

.stat .label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 3rem;
}

.footer-links {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    margin: 0 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.footer-links a:hover {
    color: var(--accent);
}

/* Chat */
.chat-container {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 200px);
    min-height: 400px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.msg-user, .msg-assistant {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    max-width: 85%;
    font-size: 0.95rem;
    line-height: 1.5;
    word-wrap: break-word;
}

.msg-user {
    background: var(--accent-dim);
    color: var(--text-bright);
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

.msg-assistant {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
}

.msg-assistant.typing {
    color: var(--text-secondary);
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.msg-status {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    padding: 0.5rem;
}

.chat-input-bar {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 0;
    border-top: 1px solid var(--border);
}

.chat-input-bar input {
    flex: 1;
    padding: 0.65rem 0.8rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}

.chat-input-bar input:focus {
    border-color: var(--accent);
}

.chat-input-bar button {
    padding: 0.65rem 1.2rem;
    background: var(--accent);
    color: var(--bg-primary);
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.chat-input-bar button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Level-up banner */
.level-up-banner {
    text-align: center;
    padding: 0.75rem 1rem;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--success);
    border-radius: 8px;
    color: var(--success);
    font-family: var(--font-mono);
    font-weight: 600;
    animation: glow-pulse 2s ease-in-out;
}

@keyframes glow-pulse {
    0%   { box-shadow: 0 0 5px rgba(0, 255, 136, 0.3); }
    50%  { box-shadow: 0 0 25px rgba(0, 255, 136, 0.6); }
    100% { box-shadow: 0 0 5px rgba(0, 255, 136, 0.1); }
}

/* Profile */
.section-title {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 1rem;
    margin: 2rem 0 1rem;
}

.progress-label {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    margin-top: 0.5rem;
}

.profile-header {
    text-align: center;
    padding: 2rem 0 0.5rem;
}

.profile-header h1 {
    color: var(--text-bright);
    font-family: var(--font-mono);
}

.profile-header .level {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    margin-top: 0.3rem;
}

/* Leaderboard */
.leaderboard {
    margin: 1rem 0 2rem;
    overflow-x: auto;
}

.leaderboard table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.leaderboard th {
    color: var(--accent);
    text-align: left;
    padding: 0.6rem 0.8rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.8rem;
}

.leaderboard td {
    padding: 0.6rem 0.8rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

.leaderboard .rank {
    width: 3rem;
    text-align: center;
    color: var(--text-secondary);
}

.leaderboard tr.highlight td {
    background: var(--accent-glow);
    color: var(--text-bright);
}

.link-badge {
    display: inline-block;
    width: 1.4rem;
    height: 1.4rem;
    line-height: 1.4rem;
    text-align: center;
    border-radius: 3px;
    font-size: 0.7rem;
    font-weight: 700;
    margin-right: 0.2rem;
}

.link-badge.discord {
    background: #5865F2;
    color: #fff;
}

.link-badge.github {
    background: #333;
    color: #fff;
}

/* Activity Feed */
.activity-feed {
    margin: 1rem 0 2rem;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
}

.activity-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    white-space: nowrap;
    min-width: 4.5rem;
    text-align: center;
}

.activity-badge.chat {
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent);
}

.activity-badge.discord_mention, .activity-badge.discord_command {
    background: rgba(88, 101, 242, 0.2);
    color: #7289da;
}

.activity-badge.discord_message {
    background: rgba(88, 101, 242, 0.1);
    color: #5865F2;
}

.activity-badge.github_commit {
    background: rgba(0, 255, 136, 0.1);
    color: var(--success);
}

.activity-badge.github_pr, .activity-badge.github_pr_merged {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
}

.activity-user {
    color: var(--text-bright);
    font-weight: 600;
    white-space: nowrap;
}

.activity-desc {
    color: var(--text-secondary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.activity-points {
    color: var(--accent);
    font-family: var(--font-mono);
    font-weight: 700;
    white-space: nowrap;
}

/* Responsive */
@media (max-width: 600px) {
    .hero h1 { font-size: 2rem; }
    .container { padding: 1.5rem 1rem; }
    .stats-row { gap: 1rem; }
    .chat-container { height: calc(100vh - 160px); }
    .msg-user, .msg-assistant { max-width: 92%; }

    .nav-toggle { display: block; }

    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border);
        padding: 1rem;
        z-index: 100;
    }

    nav.open { display: flex; flex-direction: column; }

    nav a {
        margin: 0;
        padding: 0.6rem 1rem;
        border-bottom: 1px solid var(--border);
        font-size: 1rem;
    }

    nav a:last-child { border-bottom: none; }

    header .container { position: relative; }
}