:root {
    --sidebar-width: 290px;
    --surface: #ffffff;
    --page: #f4f6f8;
    --ink: #111827;
    --muted: #6b7280;
    --accent: #111827;
}

body {
    background: var(--page);
    color: var(--ink);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.landing-page {
    background:
        radial-gradient(circle at 20% 10%, rgba(99,102,241,.12), transparent 30%),
        radial-gradient(circle at 80% 20%, rgba(16,185,129,.10), transparent 25%),
        #f7f8fa;
}

.hero-card {
    width: min(760px, 100%);
    padding: 56px 28px;
}

.profile-photo {
    width: 220px;
    height: 220px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 20px 60px rgba(17,24,39,.16);
    border: 8px solid rgba(255,255,255,.9);
}

.eyebrow {
    font-size: .78rem;
    letter-spacing: .16em;
    font-weight: 700;
    color: #6b7280;
}

.story-launch {
    width: 112px;
    height: 112px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #111827;
    color: #fff;
    text-decoration: none;
    font-size: 2rem;
    box-shadow: 0 16px 40px rgba(17,24,39,.25);
    transition: transform .2s ease, box-shadow .2s ease;
}

.story-launch:hover {
    color: #fff;
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 20px 52px rgba(17,24,39,.32);
}

.app-shell {
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--sidebar-width);
    background: #111827;
    color: #fff;
}

.brand {
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
}

.brand-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    background: #22c55e;
    border-radius: 50%;
    margin-right: 8px;
}

.sidebar .nav-link {
    color: #cbd5e1;
    border-radius: 12px;
    padding: 12px 14px;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    color: #fff;
    background: rgba(255,255,255,.10);
}

.content-area {
    margin-left: var(--sidebar-width);
    padding: 48px;
    min-height: 100vh;
}

.placeholder-card {
    background: var(--surface);
    border: 1px solid #e5e7eb;
    border-radius: 24px;
    padding: 36px;
    box-shadow: 0 10px 30px rgba(17,24,39,.05);
}

.placeholder-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: #eef2ff;
    font-size: 1.7rem;
    margin-bottom: 18px;
}

.architecture-box {
    margin-top: 24px;
    padding: 22px;
    border-radius: 16px;
    background: #f8fafc;
    border: 1px dashed #cbd5e1;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

@media (max-width: 900px) {
    :root { --sidebar-width: 230px; }
    .content-area { padding: 28px; }
}

@media (max-width: 720px) {
    .sidebar {
        position: static;
        width: 100%;
        min-height: auto;
    }
    .content-area {
        margin-left: 0;
        padding: 24px;
    }
    .profile-photo {
        width: 170px;
        height: 170px;
    }
}