/* Aperture22.ai — Phase 1.1 Landing Page */
/* Design intent: Light First. Text-first. Calm restraint. */

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

:root {
  --color-bg: #f9f9f7;
  --color-surface: #ffffff;
  --color-border: #e0e0db;
  --color-text: #1a1a18;
  --color-text-muted: #6b6b67;
  --color-accent: #2c2c2a;
  --color-rule: #d4d4cf;
  --font-body: "Georgia", serif;
  --font-ui: system-ui, -apple-system, "Segoe UI", sans-serif;
  --max-width: 720px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ─────────────────────────────────── */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ── Header ─────────────────────────────────── */

header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

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

.logo {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text);
  text-decoration: none;
}

.logo span {
  font-weight: 300;
  color: var(--color-text-muted);
}

nav {
  display: flex;
  gap: var(--spacing-md);
}

nav a {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color 0.15s ease;
}

nav a:hover {
  color: var(--color-text);
}

/* ── Statement ──────────────────────────────── */

.statement {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.statement h1 {
  font-family: var(--font-body);
  font-size: 2.25rem;
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-md);
}

.statement p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.75;
}

/* ── Section base ───────────────────────────── */

section {
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-rule);
}

section h2 {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

/* ── What ───────────────────────────────────── */

.what-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.what-list li {
  font-size: 1rem;
  color: var(--color-text);
  padding-left: 1.25rem;
  position: relative;
}

.what-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

/* ── Preview ────────────────────────────────── */

.preview-frame {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  background: var(--color-surface);
}

.preview-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.preview-panel {
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
}

.preview-panel:first-child {
  border-right: 1px solid var(--color-border);
}

.preview-panel-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.preview-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
  border: 1px dashed var(--color-border);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-placeholder span {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.preview-caption {
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ── Principles ─────────────────────────────── */

.principles-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.principles-list li {
  font-size: 0.9375rem;
  color: var(--color-text);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.6;
}

.principles-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
  font-weight: bold;
}

/* ── Status ─────────────────────────────────── */

.status-block {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.status-block p {
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #aaa;
  flex-shrink: 0;
}

/* ── Footer ─────────────────────────────────── */

footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  margin-top: var(--spacing-lg);
}

footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

footer p {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ── Responsive ─────────────────────────────── */

@media (max-width: 600px) {
  :root {
    --spacing-lg: 2.5rem;
    --spacing-xl: 3.5rem;
  }

  header .container {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .statement h1 {
    font-size: 1.75rem;
  }

  .preview-inner {
    grid-template-columns: 1fr;
  }

  .preview-panel:first-child {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  footer .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}