:root {
  --accent: #0f6cbd;        /* Outlook blue */
  --accent-dark: #0a4f8a;
  --accent-soft: #eaf2fb;
  --bg: #f5f6f8;
  --panel: #ffffff;
  --rail: #f3f6fb;
  --border: #e5e8ec;
  --text: #1b1a19;
  --muted: #605e5c;
  --unread: #0f6cbd;
  --spam: #c42b1c;
  --hover: #f0f6fd;
  --sel: #e3eefb;
  --sel-bar: #0f6cbd;
  --flag: #d13438;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --accent: #4aa0e6; --accent-dark: #2b8ae0; --accent-soft: #14283d;
    --bg: #1b1a19; --panel: #242322; --rail: #201f1e; --border: #35332f;
    --text: #f3f2f1; --muted: #a19f9d; --unread: #78b6f0; --spam: #f1707b;
    --hover: #2c2b2a; --sel: #223349; --sel-bar: #4aa0e6; --flag: #f1707b;
    --shadow: 0 1px 3px rgba(0,0,0,.4);
  }
}
* { box-sizing: border-box; }
html, body, #root { height: 100%; margin: 0; }
body { font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
button { font-family: inherit; }
.hidden { display: none !important; }

/* ---------- Auth ---------- */
.auth-wrap { height: 100%; display: grid; place-items: center; padding: 16px;
  background: linear-gradient(135deg, #e9f1fb 0%, #f5f6f8 60%); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .auth-wrap { background: linear-gradient(135deg,#14283d,#1b1a19 60%); } }
.auth-card { width: 100%; max-width: 380px; background: var(--panel); border-radius: 14px; padding: 32px 28px;
  box-shadow: 0 12px 48px rgba(0,0,0,.12); }
.logo { font-size: 28px; font-weight: 800; letter-spacing: -.5px; margin-bottom: 4px; }
.logo span { color: var(--accent); }
.auth-sub { color: var(--muted); margin: 0 0 22px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-size: 13px; color: var(--muted); }
.field input { padding: 11px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; background: var(--bg); color: var(--text); }
.field input:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.auth-btn { width: 100%; padding: 12px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; font-size: 15px; font-weight: 600; cursor: pointer; }
.auth-btn:hover { background: var(--accent-dark); }
.auth-btn:disabled { opacity: .6; cursor: default; }
.auth-msg { min-height: 20px; margin-top: 12px; font-size: 13px; }
.auth-msg.error { color: var(--spam); }
.auth-note { margin-top: 18px; font-size: 12px; color: var(--muted); line-height: 1.5; border-top: 1px solid var(--border); padding-top: 14px; }

/* ---------- App shell ---------- */
.shell { height: 100%; display: flex; flex-direction: column; }
.ribbon { display: flex; align-items: center; gap: 12px; padding: 8px 14px; background: var(--accent); color: #fff; }
.ribbon .logo2 { font-weight: 800; font-size: 16px; }
.ribbon .logo2 span { opacity: .85; }
.ribbon .search { flex: 1; max-width: 520px; }
.ribbon .search input { width: 100%; padding: 7px 12px; border: 0; border-radius: 6px; font-size: 13px; }
.ribbon .spacer { flex: 1; }
.ribbon .acct { font-size: 13px; opacity: .95; }
.ribbon button { background: rgba(255,255,255,.15); border: 0; color: #fff; padding: 6px 10px; border-radius: 6px; cursor: pointer; font-size: 13px; }
.ribbon button:hover { background: rgba(255,255,255,.28); }

.panes { flex: 1; display: grid; grid-template-columns: 240px 380px 1fr; min-height: 0; }

/* folders */
.folders { background: var(--rail); border-right: 1px solid var(--border); overflow-y: auto; padding: 10px 8px; }
.new-mail { width: 100%; margin-bottom: 10px; padding: 9px; border: 0; border-radius: 6px; background: var(--accent); color: #fff; font-weight: 600; cursor: pointer; font-size: 14px; }
.new-mail:hover { background: var(--accent-dark); }
.folder { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 6px; cursor: pointer; color: var(--text); }
.folder:hover { background: var(--hover); }
.folder.active { background: var(--sel); font-weight: 600; }
.folder .fi { width: 18px; text-align: center; opacity: .8; }
.folder .fn { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.folder .fc { font-size: 12px; color: var(--muted); }
.folder.active .fc { color: var(--accent); }

/* list */
.list { display: flex; flex-direction: column; border-right: 1px solid var(--border); min-height: 0; background: var(--panel); }
.list-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px 8px; }
.list-head h2 { margin: 0; font-size: 18px; }
.list-head .cnt { font-size: 12px; color: var(--muted); }
.tabs { display: flex; gap: 18px; padding: 0 16px; border-bottom: 1px solid var(--border); }
.tab { padding: 8px 2px; font-size: 13px; color: var(--muted); border-bottom: 2px solid transparent; cursor: default; }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.msgs { flex: 1; overflow-y: auto; }
.group-label { padding: 10px 16px 4px; font-size: 12px; font-weight: 700; color: var(--muted); }
.msg { display: grid; grid-template-columns: 34px 1fr; gap: 10px; padding: 10px 16px; border-bottom: 1px solid var(--border); cursor: pointer; border-left: 3px solid transparent; }
.msg:hover { background: var(--hover); }
.msg.sel { background: var(--sel); border-left-color: var(--sel-bar); }
.avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 14px; }
.msg-main { min-width: 0; }
.msg-row1 { display: flex; justify-content: space-between; gap: 8px; }
.msg-from { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg.unread .msg-from { font-weight: 800; }
.msg-time { font-size: 12px; color: var(--muted); white-space: nowrap; display: flex; align-items: center; gap: 6px; }
.msg-subject { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 1px; }
.msg.unread .msg-subject { color: var(--accent); font-weight: 700; }
.msg-folder { color: var(--spam); font-size: 11px; font-weight: 700; margin-left: 6px; }
.unread-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--unread); display: inline-block; }
.flagomark { color: var(--flag); }
.empty { padding: 30px 16px; color: var(--muted); text-align: center; }
.pager { display: flex; justify-content: space-between; align-items: center; padding: 8px 16px; border-top: 1px solid var(--border); font-size: 13px; }
.pager button { background: none; border: 0; color: var(--accent); cursor: pointer; }
.pager button:disabled { color: var(--muted); cursor: default; }

/* reading */
.read { min-height: 0; overflow-y: auto; background: var(--panel); padding: 22px 28px; }
.read.empty { display: grid; place-items: center; color: var(--muted); }
.read h1 { font-size: 21px; margin: 0 0 14px; }
.read .sender { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.read .sender .avatar { width: 40px; height: 40px; font-size: 16px; }
.read .sender .who { font-weight: 600; }
.read .sender .addr { color: var(--muted); font-size: 13px; }
.read .when { margin-left: auto; color: var(--muted); font-size: 13px; }
.read .codes { display: flex; gap: 8px; flex-wrap: wrap; margin: 6px 0 14px; }
.code { font-family: Consolas, "SF Mono", monospace; font-weight: 700; font-size: 16px; background: #fff4ce; color: #6b4e00; padding: 6px 12px; border-radius: 8px; cursor: pointer; border: 1px solid #f2df9a; }
.code:hover { filter: brightness(.98); }
.code.copied { background: #dff6dd; color: #0e5814; border-color: #a7e3ab; }
.read .bar { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.read .bar button { padding: 6px 12px; border: 1px solid var(--border); border-radius: 7px; background: var(--bg); color: var(--text); cursor: pointer; font-size: 13px; }
.read .bar button.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.read hr { border: 0; border-top: 1px solid var(--border); margin: 0 0 16px; }
.bodytext { white-space: pre-wrap; word-break: break-word; line-height: 1.55; }
.bodytext a { color: var(--accent); }
.mailframe { width: 100%; border: 0; background: #fff; border-radius: 8px; min-height: 420px; }
.atts { margin-top: 18px; font-size: 13px; color: var(--muted); }
.att { display: inline-block; padding: 5px 10px; border: 1px solid var(--border); border-radius: 6px; margin: 4px 6px 0 0; }

.spin { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: s .7s linear infinite; vertical-align: middle; }
@keyframes s { to { transform: rotate(360deg); } }

@media (max-width: 920px) {
  .panes { grid-template-columns: 1fr; grid-template-rows: auto auto 1fr; }
  .folders { display: flex; flex-wrap: wrap; gap: 4px; border-right: 0; border-bottom: 1px solid var(--border); }
  .new-mail { display: none; }
  .list { border-right: 0; border-bottom: 1px solid var(--border); max-height: 40vh; }
}