/* Inboxication — three-pane webmail. Mobile shows one pane at a time. */
:root {
  --bg: #F3F1EC;
  --pane: #FBFAF7;
  --card: #FFFFFF;
  --ink: #1C2B3A;
  --ink-2: #3D4A58;
  --muted: #74808D;
  --line: #E2DED5;
  --accent: #1F3A5F;
  --accent-2: #2B5080;
  --accent-soft: #DCE6F2;
  --unread: #E8F0FA;
  --danger: #B5453A;
  --ok: #2F855A;
  --radius: 14px;
  --font: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Grandstander", "Nunito", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); color: var(--ink); font: 600 15px/1.45 var(--font); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent-2); }
[hidden] { display: none !important; }
code { background: #ECE8DF; border-radius: 5px; padding: 1px 5px; font-size: 13px; }

.app { height: 100vh; height: 100dvh; display: grid; grid-template-columns: 240px 360px 1fr; overflow: hidden; }
.pane { min-width: 0; min-height: 0; display: flex; flex-direction: column; }
.nav { background: var(--accent); color: #fff; padding: 16px 12px; gap: 12px; }
.list { background: var(--pane); border-right: 1px solid var(--line); }
.view { background: var(--bg); }

/* ---- buttons / inputs ---- */
.btn { border: 0; border-radius: 12px; padding: 11px 16px; font-weight: 800; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn:disabled { opacity: .6; cursor: default; }
.btn-primary { background: var(--accent); color: #fff; }
.nav .btn-primary { background: #fff; color: var(--accent); }
.btn-ghost { background: transparent; color: var(--ink-2); border: 1.5px solid var(--line); }
.btn-ghost:hover { background: #fff; }
.btn-ghost.danger { color: var(--danger); }
.btn-sm { padding: 7px 12px; font-size: 13px; border-radius: 9px; }
.icon-btn { border: 0; background: transparent; width: 36px; height: 36px; border-radius: 9px; cursor: pointer; font-size: 18px; color: var(--ink-2); }
.icon-btn:hover { background: #ECE8DF; }
.linkish { border: 0; background: none; color: inherit; cursor: pointer; padding: 6px 4px; font-weight: 700; opacity: .85; }
.linkish:hover { opacity: 1; text-decoration: underline; }
.input { width: 100%; border: 1.5px solid var(--line); background: #fff; border-radius: 10px; padding: 9px 12px; outline: none; }
.input:focus { border-color: var(--accent-2); }
textarea.input { resize: vertical; font-weight: 500; }

/* ---- nav ---- */
.brand { padding: 4px 6px 0; }
.logo { font: 800 26px/1 var(--display); letter-spacing: -.3px; }
.compose-btn { width: 100%; }
.navlist { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; margin-top: 6px; }
.nav-group { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; opacity: .6; margin: 12px 8px 4px; }
.nav-item { display: flex; align-items: center; gap: 8px; border: 0; background: transparent; color: #fff; text-align: left; padding: 8px 10px; border-radius: 9px; cursor: pointer; width: 100%; font-weight: 700; opacity: .85; }
.nav-item:hover { background: rgba(255, 255, 255, .1); opacity: 1; }
.nav-item.on { background: rgba(255, 255, 255, .18); opacity: 1; }
.nav-item .nm { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.badge { background: #fff; color: var(--accent); border-radius: 999px; padding: 0 7px; font-size: 12px; font-weight: 800; min-width: 20px; text-align: center; }
.badge.dim { background: rgba(255, 255, 255, .25); color: #fff; }
.nav-foot { display: flex; justify-content: space-between; padding: 0 4px; }

/* ---- list ---- */
.list-head { display: flex; align-items: center; gap: 6px; padding: 12px 10px 6px; }
.list-title { margin: 0; flex: 1; font-size: 17px; font-weight: 800; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search { padding: 4px 12px 10px; }
.threads { flex: 1; overflow-y: auto; }
.trow { display: block; width: 100%; text-align: left; border: 0; border-bottom: 1px solid var(--line); background: transparent; padding: 10px 14px; cursor: pointer; }
.trow:hover { background: #F4F1EA; }
.trow.on { background: var(--accent-soft); }
.trow.unread { background: var(--unread); }
.trow.unread .t-subject, .trow.unread .t-who { font-weight: 800; }
.trow.on.unread { background: var(--accent-soft); }
.t-top { display: flex; gap: 8px; align-items: baseline; }
.t-who { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 700; }
.t-time { font-size: 12px; color: var(--muted); flex: none; }
.t-subject { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }
.t-snip { font-size: 13px; color: var(--muted); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.t-ref { font-size: 11px; color: var(--accent-2); font-weight: 800; letter-spacing: .03em; }
.t-tag { font-size: 11px; border-radius: 999px; padding: 0 7px; margin-left: 6px; background: #EEE9DC; color: var(--ink-2); font-weight: 800; }
.t-tag.unknown { background: #FDEBC8; }
.t-tag.blocked { background: #F6D6D2; }
.list-empty { padding: 40px 20px; text-align: center; color: var(--muted); }

/* ---- view ---- */
.empty { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--muted); text-align: center; padding: 20px; }
.empty-art { font-size: 56px; opacity: .4; }
.thread { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.thread-head { display: flex; align-items: flex-start; gap: 8px; padding: 14px 18px 10px; border-bottom: 1px solid var(--line); background: var(--pane); flex-wrap: wrap; }
.thread-titles { flex: 1; min-width: 200px; }
.thread-titles h2 { margin: 0; font-size: 19px; font-weight: 800; line-height: 1.25; overflow-wrap: anywhere; }
.thread-meta { font-size: 13px; color: var(--muted); margin-top: 2px; }
.ref { font-weight: 800; color: var(--accent-2); background: var(--accent-soft); border-radius: 999px; padding: 1px 8px; }
.thread-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.messages { flex: 1; overflow-y: auto; padding: 14px 18px; display: flex; flex-direction: column; gap: 12px; }
.msg { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.msg.out { background: #F4F7FB; border-color: #D5DFEC; }
.msg-head { display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.msg-from { font-weight: 800; color: var(--ink); }
.msg-time { margin-left: auto; }
.msg-to { font-size: 12.5px; color: var(--muted); margin: 2px 0 8px; }
.msg-auth { font-size: 11px; color: var(--muted); }
.msg-auth .bad { color: var(--danger); font-weight: 800; }
.msg-body { font-weight: 500; }
.msg-body pre { white-space: pre-wrap; overflow-wrap: anywhere; margin: 0; font: inherit; }
.msg-body iframe { width: 100%; border: 0; display: block; min-height: 60px; background: #fff; border-radius: 8px; }
.msg-tools { margin-top: 8px; display: flex; gap: 10px; font-size: 12.5px; }
.atts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.att { display: inline-flex; align-items: center; gap: 6px; background: #F1EEE6; border-radius: 8px; padding: 5px 10px; font-size: 13px; text-decoration: none; color: var(--ink); }
.att.na { opacity: .55; }

.replybox { border-top: 1px solid var(--line); background: var(--pane); padding: 10px 18px 14px; display: flex; flex-direction: column; gap: 8px; }
.reply-to { font-size: 13px; color: var(--muted); }
.reply-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.attach-btn { cursor: pointer; font-size: 13px; font-weight: 800; color: var(--accent-2); }
.attach-list { flex: 1; font-size: 12.5px; color: var(--muted); display: flex; gap: 6px; flex-wrap: wrap; }
.attach-list span { background: #F1EEE6; border-radius: 6px; padding: 2px 8px; }
.attach-list button { border: 0; background: none; cursor: pointer; color: var(--danger); padding: 0 2px; }
.reply-bar .btn { margin-left: auto; }

/* ---- modals ---- */
.modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(20, 30, 40, .45); }
.modal-panel { position: relative; background: var(--pane); border-radius: 16px; width: min(560px, 100% - 24px); max-height: 92vh; overflow-y: auto; padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 10px; box-shadow: 0 20px 60px rgba(0, 0, 0, .25); }
.modal-panel.wide { width: min(760px, 100% - 24px); }
.modal-head { display: flex; align-items: center; justify-content: space-between; }
.modal-head h3 { margin: 0; font-size: 18px; }
.modal-panel label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 800; color: var(--ink-2); }
.fine { font-size: 12.5px; color: var(--muted); margin: 0; font-weight: 500; }
.settings-sec { border-top: 1px solid var(--line); padding-top: 12px; }
.settings-sec h4 { margin: 0 0 6px; font-size: 15px; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.inline-form .input { flex: 1; min-width: 140px; }
.srow { display: flex; align-items: center; gap: 10px; padding: 7px 0; border-bottom: 1px dashed var(--line); font-size: 14px; flex-wrap: wrap; }
.srow .grow { flex: 1; min-width: 160px; }
.srow small { color: var(--muted); }
.srow .input { max-width: 180px; }
.toggle { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; }

/* ---- toast ---- */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); background: var(--ink); color: #fff; padding: 11px 16px; border-radius: 11px; font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 60; max-width: calc(100% - 32px); text-align: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---- auth page (shares the look of ProcrastiMate's) ---- */
.auth-wrap { min-height: 100vh; min-height: 100dvh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.view.auth { max-width: 460px; width: 100%; margin: 0 auto; padding: 24px 20px; display: block; }
.auth .brand { text-align: center; margin-bottom: 16px; }
.auth .logo { color: var(--accent); font-size: 40px; }
.auth .tagline { color: var(--ink-2); margin: 6px 0 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 14px; }
.seg { display: grid; grid-template-columns: 1fr 1fr; background: #ECE8DF; border-radius: 12px; padding: 4px; margin-bottom: 16px; }
.seg button { border: 0; background: transparent; padding: 9px; border-radius: 9px; font-weight: 800; color: var(--muted); cursor: pointer; }
.seg button.on { background: #fff; color: var(--ink); }
.auth-h1 { font-size: 22px; margin: 0 0 4px; }
.auth-sub { color: var(--muted); margin: 0 0 14px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; font-weight: 800; margin-bottom: 5px; color: var(--ink-2); }
.field-labelrow { display: flex; justify-content: space-between; align-items: baseline; }
.link-btn { border: 0; background: none; color: var(--accent-2); font-size: 13px; font-weight: 700; cursor: pointer; padding: 0; text-decoration: underline; }
.auth-btn { width: 100%; margin-top: 6px; font-size: 16px; }
.code-boxes { display: flex; gap: 8px; justify-content: center; margin: 8px 0 14px; }
.code-box { width: 44px; height: 54px; text-align: center; font-size: 22px; font-weight: 800; border: 1.5px solid var(--line); border-radius: 10px; background: #fff; outline: none; }
.code-box:focus { border-color: var(--accent-2); }
.dev-note { background: #FFF6D8; border: 1px dashed #E0C56A; border-radius: 10px; padding: 10px; font-size: 14px; margin-bottom: 12px; text-align: center; }
.auth-actions { display: flex; justify-content: center; gap: 10px; margin-top: 12px; font-size: 14px; }
.auth-actions .dot { color: var(--muted); }
.auth-foot { text-align: center; color: var(--muted); font-size: 13px; margin-top: 16px; }

/* ---- responsive ---- */
@media (max-width: 1000px) { .app { grid-template-columns: 220px 1fr; } .view { display: none; } .app.show-view .view { display: flex; } .app.show-view .list { display: none; } }
.only-m { display: none; }
@media (max-width: 700px) {
  .app { grid-template-columns: 1fr; }
  .nav { position: fixed; inset: 0 25% 0 0; z-index: 40; transform: translateX(-100%); transition: transform .2s; box-shadow: 0 0 40px rgba(0, 0, 0, .3); }
  .app.show-nav .nav { transform: none; }
  .only-m { display: inline-flex; }
  .thread-head { padding: 10px 12px; }
  .messages { padding: 10px 12px; }
  .replybox { padding: 8px 12px 12px; }
}