/* app.css — PostVaultOS app-specific styles (extends theme.css) */

/* ── App Shell ─────────────────────────────────────────────────────────────── */
.app-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--surface);
  border-bottom: 1px solid var(--sep);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-brand {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--text);
  font-style: italic;
}

.app-handle-display {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--text);
}

.app-container {
  max-width: 680px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* ── Sections ───────────────────────────────────────────────────────────────── */
.section-label {
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 500;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--text);
  margin-bottom: 32px;
  font-style: italic;
}

.app-section {
  margin-bottom: 48px;
}

/* ── Form elements ──────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

input[type="text"],
input[type="password"],
textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--sep);
  border-radius: 4px;
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="password"]:focus,
textarea:focus {
  border-color: var(--accent);
}

textarea { resize: vertical; min-height: 100px; }

input.handle-input {
  font-family: var(--font-serif);
  font-size: 18px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s, border-color 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #12100e;
  border-color: var(--accent);
}

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

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--sep);
}

.btn-secondary:hover {
  background: var(--surface2);
}

.btn-small {
  padding: 6px 14px;
  font-size: 12px;
}

/* ── Letter Cards ──────────────────────────────────────────────────────────── */
.letters-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.letter-card {
  background: var(--surface);
  border: 1px solid var(--sep);
  border-radius: 4px;
  padding: 20px 24px;
}

.letter-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.letter-sender {
  font-weight: 500;
  color: var(--text);
  font-size: 14px;
}

.letter-time {
  font-size: 12px;
  color: var(--text-muted);
}

.letter-body {
  margin-bottom: 12px;
}

.letter-burn {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.btn-open {
  background: var(--surface2);
  border: 1px solid var(--sep);
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.2s;
}

.btn-open:hover {
  background: var(--sep);
  color: var(--text);
}

.letter-plaintext {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  white-space: pre-wrap;
  padding: 16px;
  background: var(--surface2);
  border-radius: 4px;
  border-left: 2px solid var(--accent);
}

/* ── Handle display ────────────────────────────────────────────────────────── */
.handle-display-large {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  margin-bottom: 24px;
}

.handle-seg {
  font-family: var(--font-serif);
  font-size: 40px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--sep);
  padding: 8px 20px;
  border-radius: 4px;
  letter-spacing: 0.1em;
}

/* ── Landing nav link ─────────────────────────────────────────────────────── */
.landing-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--accent);
  color: #12100e;
  border-radius: 4px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: background 0.2s;
  margin-top: 8px;
}

.landing-cta:hover { background: var(--accent-dim); }

.landing-divider {
  width: 40px;
  height: 1px;
  background: var(--sep);
  margin: 0 auto 40px;
}

/* ── Create view ───────────────────────────────────────────────────────────── */
.create-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  text-align: center;
  padding: 40px 24px;
}

.create-view .section-title {
  font-size: 36px;
  margin-bottom: 16px;
}

.create-view p {
  color: var(--text-muted);
  max-width: 420px;
  margin: 0 auto 40px;
  line-height: 1.7;
}