/* Layout chrome: app shell + public/landing + page heads. */

/* app shell */
.app { min-height: 100vh; }
.app-header {
    position: sticky; top: 0; z-index: 30;
    border-bottom: 1px solid rgba(43, 47, 49, 0.7);
    background: rgba(18, 20, 23, 0.8);
    backdrop-filter: blur(12px);
}
.app-header-inner { margin: 0 auto; max-width: var(--content); display: flex; align-items: center; gap: 1.5rem; padding: 0.875rem 1.5rem; }
.brand-link { transition: opacity 0.15s ease; }
.brand-link:hover { opacity: 0.8; }

.app-nav { display: flex; align-items: center; gap: 0.35rem; margin-left: 1rem; }
.nav-link { padding: 0.4rem 0.75rem; border-radius: 0.6rem; font-size: 0.9rem; font-weight: 500; color: var(--tide); transition: color 0.15s ease, background 0.15s ease; }
.nav-link:hover { color: var(--halo); background: rgba(255, 255, 255, 0.04); }
.nav-link.active { color: var(--halo); }

.app-account { margin-left: auto; display: flex; align-items: center; gap: 1rem; font-size: 0.875rem; }
.account-email { color: var(--tide); }
.account-signout { border: none; background: none; cursor: pointer; padding: 0.25rem 0.5rem; border-radius: 0.5rem; color: var(--tide); font-family: inherit; font-size: 0.875rem; transition: color 0.15s ease; }
.account-signout:hover { color: var(--halo); }

.app-main { margin: 0 auto; max-width: var(--content); padding: 2.5rem 1.5rem; }

@media (max-width: 640px) {
    .account-email { display: none; }
    .app-nav { gap: 0.15rem; margin-left: 0.5rem; }
}

/* landing / public */
.landing { position: relative; min-height: 100vh; overflow: hidden; }
.bolt-watermark { pointer-events: none; position: absolute; right: -4rem; top: 50%; height: 78vh; transform: translateY(-50%); opacity: 0.05; }
@media (max-width: 1024px) { .bolt-watermark { display: none; } }

.landing-header { margin: 0 auto; max-width: var(--content); display: flex; align-items: center; justify-content: space-between; padding: 1.25rem 1.5rem; }
.landing-nav { display: flex; align-items: center; gap: 0.75rem; }
.landing-main { position: relative; margin: 0 auto; max-width: var(--content); padding: 0 1.5rem; }
.hero { display: flex; flex-direction: column; justify-content: center; max-width: 48rem; min-height: calc(100vh - 88px); padding: 3rem 0; }
.hero-title { margin-top: 1.25rem; font-size: clamp(2.75rem, 7vw, 4.5rem); font-weight: 700; line-height: 1.02; letter-spacing: -0.02em; }
.hero-sub { margin-top: 1.5rem; font-family: var(--font-serif); font-style: italic; font-size: clamp(1.5rem, 3vw, 1.875rem); color: var(--tide); }
.hero-lede { margin-top: 1.5rem; max-width: 36rem; font-size: 1.125rem; line-height: 1.7; color: var(--foge); }
.hero-cta { margin-top: 2.5rem; display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.hero-short { min-height: calc(85vh - 88px); }
.hero-note { font-size: 0.875rem; color: var(--tide); }

/* page head (inside app-main) */
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 1.75rem; }
.page-title { font-size: 1.875rem; font-weight: 700; letter-spacing: -0.02em; }
.page-subtitle { margin-top: 0.35rem; color: var(--tide); font-size: 0.95rem; }

/* a slim back link */
.back-link { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--tide); font-size: 0.85rem; margin-bottom: 1rem; }
.back-link:hover { color: var(--halo); }