:root {
  --bg: #f3f6f4;
  --bg-2: #e8efe9;
  --ink: #10241c;
  --muted: #5b6f65;
  --line: rgba(16, 36, 28, 0.12);
  --accent: #1f9e55;
  --accent-2: #148044;
  --accent-soft: rgba(31, 158, 85, 0.12);
  --danger: #c0392b;
  --warn: #c47f17;
  --card: #ffffff;
  --shadow: 0 18px 50px rgba(16, 36, 28, 0.08);
  --radius: 18px;
  --font: "Manrope", system-ui, sans-serif;
  --display: "Unbounded", "Manrope", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(31, 158, 85, 0.18), transparent 55%),
    radial-gradient(900px 400px at 90% 0%, rgba(20, 90, 60, 0.12), transparent 50%),
    linear-gradient(180deg, #f7faf8 0%, var(--bg) 40%, #eef3f0 100%);
}

a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }

.bg-glow {
  position: fixed; inset: 0; pointer-events: none; z-index: -1;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2310241c' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.brand { display: inline-flex; align-items: center; gap: .7rem; font-family: var(--display); font-weight: 600; }
.brand-mark {
  width: 1.7rem; height: 1.7rem; border-radius: .55rem;
  background: linear-gradient(145deg, var(--accent), #0d5c34);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.25);
}
.brand-name { letter-spacing: -.02em; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  border: 1px solid transparent; border-radius: 999px;
  padding: .7rem 1.15rem; font-weight: 600; cursor: pointer;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn-solid { background: var(--accent); color: #fff; box-shadow: 0 10px 24px rgba(31,158,85,.28); }
.btn-solid:hover { background: var(--accent-2); }
.btn-ghost { background: rgba(255,255,255,.7); border-color: var(--line); }
.btn-danger { background: #fff; color: var(--danger); border-color: rgba(192,57,43,.3); }
.btn-lg { padding: .9rem 1.4rem; font-size: 1.02rem; }
.btn-sm { padding: .45rem .85rem; font-size: .88rem; border-radius: 10px; }

/* Landing */
.landing .top {
  max-width: 1120px; margin: 0 auto; padding: 1.25rem 1.25rem 0;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.landing .nav { display: flex; gap: 1.25rem; color: var(--muted); font-weight: 500; }
.landing .nav a:hover { color: var(--ink); }
.landing main { max-width: 1120px; margin: 0 auto; padding: 0 1.25rem 4rem; }
.hero { padding: 4.5rem 0 2rem; max-width: 760px; }
.brand-hero {
  margin: 0 0 .75rem; font-family: var(--display); font-size: clamp(2.4rem, 6vw, 4.2rem);
  letter-spacing: -.04em; line-height: .95; color: var(--ink);
}
.hero h1 {
  margin: 0 0 1rem; font-family: var(--display); font-weight: 500;
  font-size: clamp(1.35rem, 3vw, 1.9rem); letter-spacing: -.02em; max-width: 18ch;
}
.lead { margin: 0 0 1.6rem; color: var(--muted); font-size: 1.1rem; line-height: 1.55; max-width: 42ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .75rem; }

.panel-preview { margin: 1rem 0 3rem; }
.preview-frame {
  display: grid; grid-template-columns: 240px 1fr; min-height: 320px;
  border-radius: 24px; overflow: hidden; background: var(--card); box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.preview-side { padding: 1.2rem; background: linear-gradient(180deg, #123528, #0c241b); color: #e8f5ee; }
.preview-row { padding: .75rem .8rem; border-radius: 12px; margin-top: .55rem; background: rgba(255,255,255,.06); font-size: .92rem; }
.preview-row.muted { opacity: .55; }
.chip { display: inline-flex; padding: .25rem .6rem; border-radius: 999px; font-size: .75rem; font-weight: 700; }
.chip.on { background: rgba(124,255,107,.18); color: #9dff96; }
.preview-main {
  padding: 1.5rem; display: flex; flex-direction: column; gap: .7rem; justify-content: flex-end;
  background:
    linear-gradient(160deg, rgba(31,158,85,.08), transparent 40%),
    #fbfcfb;
}
.bubble { max-width: 70%; padding: .75rem 1rem; border-radius: 16px; line-height: 1.4; font-size: .95rem; }
.bubble.in { align-self: flex-start; background: #eef3f0; }
.bubble.out { align-self: flex-end; background: #d8f5e3; }

.section { padding: 2.5rem 0; }
.section h2 { font-family: var(--display); font-size: 1.6rem; margin: 0 0 .5rem; letter-spacing: -.02em; }
.section-lead { color: var(--muted); margin: 0 0 1.5rem; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.feature-grid article {
  background: rgba(255,255,255,.78); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.2rem 1.15rem;
}
.feature-grid h3 { margin: 0 0 .45rem; font-size: 1.02rem; }
.feature-grid p { margin: 0; color: var(--muted); line-height: 1.45; font-size: .95rem; }

.section-api .code {
  background: #10241c; color: #d7efe2; border-radius: 16px; padding: 1.1rem 1.2rem;
  overflow: auto; font-size: .88rem; line-height: 1.5; margin: 0 0 1rem;
}
.foot {
  max-width: 1120px; margin: 0 auto; padding: 1.5rem 1.25rem 2.5rem;
  display: flex; justify-content: space-between; color: var(--muted); font-size: .92rem;
  border-top: 1px solid var(--line);
}

/* Cabinet shell */
.cabinet { min-height: 100vh; display: grid; grid-template-columns: 260px 1fr; }
.sidebar {
  background: linear-gradient(180deg, #123528 0%, #0c241b 100%);
  color: #e7f4ec; padding: 1.35rem 1rem; display: flex; flex-direction: column; gap: 1rem;
}
.sidebar .brand-name { color: #fff; }
.side-nav { display: flex; flex-direction: column; gap: .35rem; margin-top: .5rem; }
.side-nav button {
  text-align: left; background: transparent; border: 0; color: #c9e6d6;
  padding: .75rem .9rem; border-radius: 12px; cursor: pointer; font-weight: 600;
}
.side-nav button:hover, .side-nav button.active { background: rgba(255,255,255,.08); color: #fff; }
.side-footer { margin-top: auto; display: grid; gap: .6rem; }
.side-footer .meta { font-size: .8rem; color: #9fbfaf; word-break: break-all; }

.project-switch {
  display: grid; gap: .35rem;
  padding: .65rem .75rem; border-radius: 12px;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
}
.project-switch label {
  font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: #9fbfaf;
}
.project-switch select {
  width: 100%; border: 0; border-radius: 8px;
  padding: .55rem .6rem; background: rgba(0,0,0,.25); color: #fff;
  font-weight: 600; font-size: .92rem;
}
.profile.is-active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-soft); }

.content { padding: 1.4rem 1.5rem 2rem; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 1.2rem; }
.page-head h1 { margin: 0; font-family: var(--display); font-size: 1.45rem; letter-spacing: -.02em; }
.page-head p { margin: .35rem 0 0; color: var(--muted); }

.surface {
  background: rgba(255,255,255,.86); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.1rem;
}
.grid-2 { display: grid; grid-template-columns: 1.2fr .8fr; gap: 1rem; }
.profiles { display: grid; gap: .8rem; }
.profile {
  display: grid; grid-template-columns: 1fr auto; gap: .8rem; align-items: center;
  padding: 1rem; border: 1px solid var(--line); border-radius: 14px; background: #fff;
}
.profile h3 { margin: 0 0 .25rem; font-size: 1.05rem; }
.profile .sub { color: var(--muted); font-size: .88rem; }
.badge {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .2rem .55rem; border-radius: 999px; font-size: .75rem; font-weight: 700;
}
.badge.ok { background: var(--accent-soft); color: var(--accent-2); }
.badge.off { background: #f1f1f1; color: #666; }
.badge.warn { background: #fff3d9; color: var(--warn); }
.actions { display: flex; flex-wrap: wrap; gap: .4rem; justify-content: flex-end; }

.form { display: grid; gap: .8rem; }
.field { display: grid; gap: .35rem; }
.field label { font-size: .88rem; font-weight: 600; color: var(--muted); }
.field input, .field textarea, .field select {
  width: 100%; border: 1px solid var(--line); border-radius: 12px;
  padding: .75rem .85rem; background: #fff; color: var(--ink);
}
.field textarea { min-height: 110px; resize: vertical; }
.hint { font-size: .82rem; color: var(--muted); }

.login-wrap {
  min-height: 100vh; display: grid; place-items: center; padding: 1.5rem;
}
.login-card {
  width: min(440px, 100%); background: rgba(255,255,255,.92); border: 1px solid var(--line);
  border-radius: 22px; box-shadow: var(--shadow); padding: 1.6rem 1.4rem;
}
.login-card h1 { font-family: var(--display); font-size: 1.35rem; margin: .8rem 0 .35rem; }
.login-card p { color: var(--muted); margin: 0 0 1.1rem; }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(10, 24, 18, .45);
  display: grid; place-items: center; padding: 1rem; z-index: 40;
}
.modal {
  width: min(460px, 100%); background: #fff; border-radius: 20px; padding: 1.2rem;
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.modal.modal-lg { width: min(520px, 100%); }
.modal h2 { margin: 0 0 .5rem; font-family: var(--display); font-size: 1.15rem; }
.tabs { display: flex; gap: .4rem; margin: .75rem 0 1rem; }
.tab {
  border: 1px solid var(--line); background: #fff; border-radius: 999px;
  padding: .4rem .9rem; cursor: pointer; font-weight: 600; color: var(--muted);
}
.tab.active { background: var(--accent-soft); color: var(--accent-2); border-color: transparent; }
.pair-code {
  margin-top: 1rem; text-align: center; font-family: var(--display);
  font-size: 2rem; letter-spacing: .2em; padding: 1rem; border-radius: 14px;
  background: var(--accent-soft); color: var(--ink);
}
.hint-steps {
  margin: .5rem 0 0.75rem; padding-left: 1.2rem; color: var(--muted);
  line-height: 1.55; font-size: .95rem;
}
.hint-steps li { margin: .25rem 0; }
.hint.warn-hint {
  background: rgba(196, 127, 23, .12); border: 1px solid rgba(196, 127, 23, .35);
  border-radius: 12px; padding: .7rem .85rem; color: #7a4e0c;
}
.check-row { display: flex; flex-wrap: wrap; gap: .85rem; }
.check-row label { display: inline-flex; align-items: center; gap: .4rem; color: var(--muted); font-size: .92rem; }
.sep { border: 0; border-top: 1px solid var(--line); margin: 1.1rem 0; }
.list-block { margin-top: 1rem; display: grid; gap: .55rem; }
.list-item { padding: .7rem .8rem; border: 1px solid var(--line); border-radius: 12px; background: #fbfcfb; }
.code-out {
  background: #10241c; color: #d7efe2; border-radius: 12px; padding: .75rem;
  min-height: 3rem; overflow: auto; font-size: .8rem; white-space: pre-wrap;
}

.inbox {
  display: grid; grid-template-columns: minmax(240px, 320px) 1fr; gap: 0;
  min-height: 70vh; background: #fff; border: 1px solid var(--line);
  border-radius: 18px; overflow: hidden; box-shadow: var(--shadow);
}
.inbox-list {
  border-right: 1px solid var(--line); background: #f7faf8; padding: .9rem;
  overflow: auto; max-height: 75vh;
}
.inbox-item {
  display: grid; gap: .2rem; width: 100%; text-align: left;
  border: 0; background: transparent; padding: .7rem .75rem; border-radius: 12px;
  cursor: pointer; margin-bottom: .25rem;
}
.inbox-item:hover { background: rgba(31,158,85,.08); }
.inbox-item.active { background: var(--accent-soft); }
.inbox-item strong { font-size: .92rem; color: var(--ink); }
.inbox-item span { font-size: .8rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.inbox-thread { display: grid; grid-template-rows: auto 1fr auto; min-height: 70vh; max-height: 75vh; }
.inbox-head {
  padding: .85rem 1rem; border-bottom: 1px solid var(--line);
  font-family: var(--display); font-size: 1rem;
}
.inbox-msgs {
  overflow: auto; padding: 1rem; display: flex; flex-direction: column; gap: .55rem;
  background:
    radial-gradient(600px 200px at 0% 0%, rgba(31,158,85,.06), transparent 60%),
    #f3f6f4;
}
.bubble {
  max-width: min(75%, 520px); padding: .65rem .8rem; border-radius: 14px;
  box-shadow: 0 4px 14px rgba(16,36,28,.05);
}
.bubble.in { align-self: flex-start; background: #fff; border: 1px solid var(--line); }
.bubble.out { align-self: flex-end; background: #d8f3e4; }
.bubble-text { white-space: pre-wrap; word-break: break-word; line-height: 1.4; }
.bubble-time { margin-top: .25rem; font-size: .72rem; color: var(--muted); }
.inbox-compose {
  display: flex; gap: .55rem; padding: .75rem; border-top: 1px solid var(--line); background: #fff;
}
.inbox-compose input {
  flex: 1; border: 1px solid var(--line); border-radius: 999px; padding: .7rem 1rem;
}
@media (max-width: 960px) {
  .inbox { grid-template-columns: 1fr; }
  .inbox-list { max-height: 40vh; border-right: 0; border-bottom: 1px solid var(--line); }
}

.mail-card {
  display: flex; justify-content: space-between; gap: .75rem; align-items: center;
  padding: .85rem; border: 1px solid var(--line); border-radius: 14px; margin-bottom: .55rem;
  background: #fbfcfb;
}
.mail-stats { display: flex; flex-wrap: wrap; gap: .75rem; margin: .75rem 0; color: var(--muted); font-size: .9rem; }
.mail-recipients { max-height: 320px; overflow: auto; display: grid; gap: .35rem; }
.mail-row {
  display: flex; justify-content: space-between; gap: .5rem; align-items: center;
  padding: .45rem .6rem; border-radius: 10px; background: #f3f6f4; font-size: .88rem;
}

.qr-box {
  width: 260px; height: 260px; margin: 1rem auto; border-radius: 16px;
  border: 8px solid var(--accent); display: grid; place-items: center; background: #fff; overflow: hidden;
}
.qr-box img { width: 100%; height: 100%; object-fit: contain; }
.toast-wrap { position: fixed; right: 1rem; bottom: 1rem; z-index: 50; display: grid; gap: .5rem; }
.toast {
  background: #10241c; color: #e8f6ee; padding: .75rem 1rem; border-radius: 12px;
  box-shadow: var(--shadow); max-width: 360px; font-size: .92rem;
}
.toast.err { background: #5c1d18; }
.hidden { display: none !important; }
.empty { color: var(--muted); padding: 1.2rem; text-align: center; }

@media (max-width: 960px) {
  .landing .nav { display: none; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .preview-frame { grid-template-columns: 1fr; }
  .cabinet { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 10; }
  .side-nav { flex-direction: row; overflow-x: auto; }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .feature-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 2.8rem; }
}