:root {
  --bg: #0b0a12;
  --card: #16141f;
  --text: #f4f2fa;
  --muted: #a9a5b8;
  --line: #2a2736;
  --cyan: #5bd4ff;
  --lilac: #b794f6;
  --ok: #3dd68c;
  --warn: #e8c36a;
  --bad: #ff6b6b;
  --btn: #f4f2fa;
  --btn-text: #0b0a12;
  --shadow: none;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  color-scheme: dark;
}

body { font-size: 20px; line-height: 1.45; }

.bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 420px 280px at 12% 0%, rgba(91, 212, 255, 0.18) 0%, transparent 70%),
    radial-gradient(ellipse 400px 260px at 100% 8%, rgba(183, 148, 246, 0.16) 0%, transparent 70%);
}

.wrap {
  position: relative;
  max-width: 520px;
  margin: 0 auto;
  padding: 28px 18px 56px;
}

.top { text-align: center; margin-bottom: 22px; }

.brand {
  font-size: 34px;
  font-weight: 750;
  letter-spacing: -0.04em;
}

.brand-sub {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px 20px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

h1 { font-size: 28px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 22px; margin: 0 0 10px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }

.days {
  display: block;
  font-size: 64px;
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  margin: 8px 0 6px;
}

.days-label { font-size: 20px; color: var(--muted); }

.row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.row:first-of-type { border-top: 0; }

label { display: block; font-weight: 650; margin: 0 0 8px; }

input, select {
  width: 100%;
  font: inherit;
  padding: 16px 14px;
  border: 2px solid var(--line);
  border-radius: 14px;
  background: #0f0e16;
  color: var(--text);
  margin-bottom: 14px;
}

input::placeholder { color: #6f6b7c; }

input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(91, 212, 255, 0.18);
}

.btn {
  display: block;
  width: 100%;
  text-align: center;
  text-decoration: none;
  border: 0;
  border-radius: 16px;
  padding: 16px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  margin: 0 0 10px;
}

.btn[disabled] { opacity: 0.5; cursor: wait; }

.btn-main { background: var(--btn); color: var(--btn-text); }
.btn-cyan { background: rgba(91, 212, 255, 0.16); color: var(--cyan); }
.btn-ghost { background: transparent; color: var(--text); border: 2px solid var(--line); }
.btn-danger { background: rgba(255, 107, 107, 0.12); color: var(--bad); }

.err {
  background: rgba(255, 107, 107, 0.12);
  color: var(--bad);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 0 0 14px;
}

.ok {
  background: rgba(61, 214, 140, 0.12);
  color: var(--ok);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 0 0 14px;
}

.device {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.device:first-child { border-top: 0; }

.device button {
  flex: 0 0 auto;
  font-size: 16px;
  padding: 10px 12px;
  margin: 0;
  width: auto;
}

.hidden { display: none; }

.support {
  text-align: center;
  margin-top: 8px;
}

.support a { color: var(--cyan); font-weight: 700; }

.msg {
  border-radius: 16px;
  padding: 12px 14px;
  margin: 0 0 10px;
}

.msg p { margin: 0; white-space: pre-wrap; }

.msg-user { background: #221f2e; margin-left: 28px; }

.msg-admin { background: rgba(91, 212, 255, 0.12); margin-right: 28px; }

.msg-who {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 4px;
}

textarea {
  width: 100%;
  min-height: 140px;
  font: inherit;
  padding: 16px 14px;
  border: 2px solid var(--line);
  border-radius: 14px;
  background: #0f0e16;
  color: var(--text);
  margin-bottom: 14px;
  resize: vertical;
}

textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(91, 212, 255, 0.18);
}