:root {
    --ob-bg: #030712;
    --ob-panel: #0f172a;
    --ob-border: rgba(56, 189, 248, 0.22);
    --ob-accent: #38bdf8;
    --ob-amber: #fbbf24;
    --ob-muted: #94a3b8;
    --ob-text: #e2e8f0;
    --ob-mono: "JetBrains Mono", ui-monospace, monospace;
    --ob-sans: "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--ob-sans);
    background: var(--ob-bg);
    color: var(--ob-text);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(56, 189, 248, 0.12), transparent),
        linear-gradient(180deg, #030712 0%, #0a1628 100%);
}

.ob-app {
    max-width: 720px;
    margin: 0 auto;
    padding: 1.25rem 1rem 3rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.ob-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.ob-header__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.ob-profile-link {
    color: var(--ob-muted);
    font-size: 0.72rem;
    text-decoration: none;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.ob-profile-link:hover { color: var(--ob-accent); }

.ob-header h1 {
    font-size: 0.72rem;
    letter-spacing: 0.28em;
    font-weight: 600;
    color: var(--ob-accent);
    margin: 0.35rem 0 0;
}

.ob-tag {
    font-family: var(--ob-mono);
    font-size: 0.58rem;
    letter-spacing: 0.2em;
    color: var(--ob-muted);
}

.ob-progress {
    display: flex;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
}

.ob-progress__step {
    flex: 1;
    height: 3px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    transition: background 0.25s;
}

.ob-progress__step.is-done { background: var(--ob-accent); }
.ob-progress__step.is-active { background: var(--ob-amber); }

.ob-panel {
    flex: 1;
    background: var(--ob-panel);
    border: 1px solid var(--ob-border);
    border-radius: 8px;
    padding: 1.35rem 1.25rem;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.35);
}

.ob-panel[hidden] { display: none !important; }

.ob-panel__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0 0 0.35rem;
}

.ob-panel__sub {
    font-size: 0.82rem;
    color: var(--ob-muted);
    line-height: 1.5;
    margin: 0 0 1.25rem;
}

.ob-field {
    margin-bottom: 1rem;
}

.ob-field label {
    display: block;
    font-family: var(--ob-mono);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    color: var(--ob-muted);
    margin-bottom: 0.35rem;
}

.ob-field input,
.ob-field select,
.ob-field textarea {
    width: 100%;
    padding: 0.55rem 0.65rem;
    font-family: var(--ob-sans);
    font-size: 0.9rem;
    background: rgba(2, 6, 23, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--ob-text);
}

.ob-field textarea { min-height: 72px; resize: vertical; }

.ob-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

@media (max-width: 520px) {
    .ob-grid-2 { grid-template-columns: 1fr; }
}

.ob-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.ob-chip {
    font-family: var(--ob-mono);
    font-size: 0.68rem;
    padding: 0.4rem 0.65rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 4px;
    background: transparent;
    color: var(--ob-muted);
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.ob-chip.is-selected {
    border-color: var(--ob-accent);
    color: var(--ob-accent);
    background: rgba(56, 189, 248, 0.1);
}

.ob-segment {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.ob-segment button {
    flex: 1;
    min-width: 90px;
    font-family: var(--ob-mono);
    font-size: 0.65rem;
    padding: 0.45rem 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    background: transparent;
    color: var(--ob-muted);
    cursor: pointer;
}

.ob-segment button.is-selected {
    border-color: var(--ob-accent);
    color: var(--ob-accent);
    background: rgba(56, 189, 248, 0.08);
}

.ob-check-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
}

.ob-check-row input { width: auto; accent-color: var(--ob-accent); }

.ob-actions {
    display: flex;
    justify-content: space-between;
    gap: 0.65rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.ob-btn {
    font-family: var(--ob-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    padding: 0.55rem 1rem;
    border-radius: 4px;
    border: 1px solid var(--ob-accent);
    background: rgba(56, 189, 248, 0.15);
    color: var(--ob-accent);
    cursor: pointer;
}

.ob-btn:hover { background: rgba(56, 189, 248, 0.28); }

.ob-btn--ghost {
    border-color: rgba(255, 255, 255, 0.15);
    background: transparent;
    color: var(--ob-muted);
}

.ob-btn:disabled { opacity: 0.45; cursor: not-allowed; }

.ob-msg {
    font-family: var(--ob-mono);
    font-size: 0.72rem;
    color: var(--ob-amber);
    min-height: 1.2em;
    margin-top: 0.75rem;
}

.ob-access-card {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 0.75rem;
}

.ob-access-card h3 {
    font-size: 0.75rem;
    letter-spacing: 0.16em;
    color: var(--ob-accent);
    margin: 0 0 0.4rem;
}

.ob-access-card p {
    font-size: 0.8rem;
    color: var(--ob-muted);
    margin: 0 0 0.65rem;
    line-height: 1.45;
}

.ob-access-card.is-pro {
    border-color: rgba(251, 191, 36, 0.35);
}

.ob-access-card.is-pro h3 { color: var(--ob-amber); }

.ob-auth-toggle {
    font-size: 0.78rem;
    color: var(--ob-muted);
    margin-top: 0.75rem;
}

.ob-auth-toggle button {
    background: none;
    border: none;
    color: var(--ob-accent);
    cursor: pointer;
    font-size: inherit;
    text-decoration: underline;
}

.ob-auth-toggle a {
    color: var(--ob-accent);
    font-size: 0.78rem;
}

.ob-consent {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    margin-top: 1rem;
    padding: 0.85rem 0 0;
    border-top: 1px solid rgba(148, 163, 184, 0.2);
}

.ob-check {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.78rem;
    color: var(--ob-muted);
    cursor: pointer;
    line-height: 1.35;
}

.ob-check input {
    margin-top: 0.15rem;
    flex-shrink: 0;
}

.ob-check a {
    color: var(--ob-accent);
    text-decoration: none;
    margin-left: 0.25rem;
}

.ob-check a:hover {
    text-decoration: underline;
}

body.ob-invite-mode #ob-register-fields,
body.ob-invite-mode #ob-consent-block,
body.ob-invite-mode #auth-toggle {
    display: none !important;
}