/* Webmail — ruhige, editoriale Optik. Warmes Papier, ein Akzent, klare Hierarchie. */

:root {
  --paper:      oklch(97.5% 0.008 85);
  --paper-2:    oklch(99% 0.006 85);
  --ink:        oklch(22% 0.02 60);
  --ink-soft:   oklch(45% 0.02 60);
  --ink-faint:  oklch(62% 0.015 60);
  --line:       oklch(88% 0.01 70);
  --accent:     oklch(52% 0.14 25);   /* gedämpftes Zinnober */
  --accent-ink: oklch(98% 0.01 85);
  --ok:         oklch(58% 0.11 150);
  --err:        oklch(52% 0.16 25);

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans:  ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --text-sm:   0.85rem;
  --text-base: 1rem;
  --text-lg:   1.2rem;
  --text-xl:   clamp(1.6rem, 1.1rem + 2vw, 2.4rem);

  --space:     clamp(1rem, 0.6rem + 1.4vw, 1.6rem);
  --radius:    10px;
  --shadow:    0 1px 2px oklch(20% 0.02 60 / 0.05), 0 8px 24px oklch(20% 0.02 60 / 0.06);
  --dur:       200ms;
  --ease:      cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(120% 100% at 50% -10%, var(--paper-2), transparent 60%),
    var(--paper);
  min-height: 100dvh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ---------- Topbar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.9rem clamp(1rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--line);
  background: color-mix(in oklch, var(--paper-2), transparent 8%);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: inline-flex; align-items: baseline; gap: 0.5rem; text-decoration: none; }
.brand-mark { color: var(--accent); font-size: 1.1rem; }
.brand-name { font-family: var(--serif); font-size: var(--text-lg); letter-spacing: 0.01em; }
.topnav { display: flex; align-items: center; gap: 0.75rem; }
.account { color: var(--ink-soft); font-size: var(--text-sm); }
.logout-form { margin: 0; }

/* ---------- Layout ---------- */
.shell { max-width: 820px; margin: 0 auto; padding: var(--space) clamp(1rem, 4vw, 2.5rem) 5rem; }

.page-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  margin: 1.5rem 0 1rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--line);
}
.page-title { font-family: var(--serif); font-size: var(--text-xl); margin: 0; letter-spacing: -0.01em; }
.page-meta { color: var(--ink-faint); font-size: var(--text-sm); margin: 0; }
.backlink { margin: 0.5rem 0 0; }
.backlink a { color: var(--ink-soft); text-decoration: none; font-size: var(--text-sm); }
.backlink a:hover { color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font: inherit; font-size: var(--text-sm); font-weight: 600;
  padding: 0.55rem 1rem; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
  transition: transform var(--dur) var(--ease), background var(--dur), border-color var(--dur);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: oklch(46% 0.15 25); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink-soft); }
.btn-ghost:hover { border-color: var(--ink-faint); color: var(--ink); }
.btn-block { width: 100%; padding: 0.7rem; }

/* ---------- Alerts ---------- */
.alert { border-radius: var(--radius); padding: 0.7rem 0.9rem; font-size: var(--text-sm); margin: 1rem 0; }
.alert-error { background: oklch(94% 0.04 25); color: var(--err); border: 1px solid oklch(85% 0.06 25); }
.alert-ok { background: oklch(94% 0.04 150); color: var(--ok); border: 1px solid oklch(85% 0.05 150); }

/* ---------- Auth ---------- */
.auth { min-height: 72dvh; display: grid; place-items: center; }
.auth-card {
  width: min(400px, 92vw); background: var(--paper-2);
  border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow);
  padding: clamp(1.5rem, 1rem + 3vw, 2.5rem);
}
.auth-eyebrow { text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.68rem; color: var(--ink-faint); margin: 0 0 0.4rem; }
.auth-title { font-family: var(--serif); font-size: clamp(2rem, 1.4rem + 3vw, 2.8rem); margin: 0 0 0.4rem; letter-spacing: -0.02em; }
.auth-sub { color: var(--ink-soft); margin: 0 0 1.5rem; }

/* ---------- Forms ---------- */
.form { display: grid; gap: 1rem; }
.field { display: grid; gap: 0.35rem; }
.field-label { font-size: var(--text-sm); font-weight: 600; color: var(--ink-soft); }
.input {
  font: inherit; color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.6rem 0.75rem; width: 100%;
  transition: border-color var(--dur), box-shadow var(--dur);
}
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px oklch(52% 0.14 25 / 0.15); }
.textarea { resize: vertical; min-height: 8rem; line-height: 1.55; }
.form-actions { display: flex; gap: 0.75rem; align-items: center; }

/* ---------- Maillist ---------- */
.maillist { list-style: none; margin: 0; padding: 0; }
.mailrow { border-bottom: 1px solid var(--line); }
.mailrow-link {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 0.75rem;
  padding: 0.85rem 0.5rem; text-decoration: none; color: inherit;
  transition: background var(--dur), padding-left var(--dur) var(--ease);
}
.mailrow-link:hover { background: var(--paper-2); padding-left: 0.9rem; }
.mailrow-dot { width: 8px; height: 8px; border-radius: 50%; background: transparent; }
.mailrow.is-unread .mailrow-dot { background: var(--accent); }
.mailrow.is-unread .mailrow-from,
.mailrow.is-unread .mailrow-subject { font-weight: 700; color: var(--ink); }
.mailrow-from { font-size: var(--text-sm); color: var(--ink-soft); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mailrow-subject { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mailrow-date { font-size: var(--text-sm); color: var(--ink-faint); white-space: nowrap; }

@media (max-width: 560px) {
  .mailrow-link { grid-template-columns: auto 1fr; grid-auto-rows: min-content; }
  .mailrow-from { grid-column: 2; }
  .mailrow-subject { grid-column: 2; }
  .mailrow-date { grid-column: 2; }
}

/* ---------- Empty ---------- */
.empty { text-align: center; padding: 4rem 1rem; color: var(--ink-faint); }
.empty-title { font-family: var(--serif); font-size: var(--text-lg); color: var(--ink-soft); margin: 0 0 0.25rem; }
.empty-sub { margin: 0; font-size: var(--text-sm); }

/* ---------- Message ---------- */
.message { background: var(--paper-2); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; margin-top: 1rem; }
.message-head { padding: clamp(1.2rem, 0.8rem + 2vw, 2rem); border-bottom: 1px solid var(--line); }
.message-subject { font-family: var(--serif); font-size: clamp(1.4rem, 1rem + 1.6vw, 2rem); margin: 0 0 1rem; letter-spacing: -0.01em; }
.message-meta { display: grid; gap: 0.3rem; margin: 0 0 1rem; }
.message-meta div { display: flex; gap: 0.6rem; font-size: var(--text-sm); }
.message-meta dt { color: var(--ink-faint); min-width: 3.5rem; margin: 0; }
.message-meta dd { margin: 0; color: var(--ink-soft); }
.message-body { padding: clamp(1.2rem, 0.8rem + 2vw, 2rem); }
.mail-frame { width: 100%; min-height: 55vh; border: 0; background: #fff; border-radius: 8px; }
.mail-text { white-space: pre-wrap; word-wrap: break-word; font-family: var(--sans); font-size: var(--text-base); line-height: 1.6; margin: 0; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}