:root {
  --mantle: #181825;
  --crust: #11111b;
  --text: #cdd6f4;
  --muted: #a6adc8;
  --line: #45475a;
  --lav: #b4befe;
  --sky: #89dceb;
  --green: #a6e3a1;
  --red: #f38ba8;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: linear-gradient(160deg, var(--mantle), var(--crust));
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, Segoe UI, Inter, Roboto,
    Ubuntu, Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.shell {
  width: 100%;
  max-width: 520px;
}

.card {
  background: linear-gradient(
    180deg,
    rgba(49, 50, 68, 0.9),
    rgba(24, 24, 37, 0.92)
  );
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 26px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.h {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.h1 {
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 700;
  letter-spacing: 0.2px;
}

.form {
  display: grid;
  gap: 16px;
}

.lbl {
  font-size: 13px;
  color: var(--muted);
}

.input {
  width: 100%;
  background: #2b2d3a;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 14px;
  padding: 14px 16px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input:focus {
  border-color: var(--lav);
  box-shadow: 0 0 0 4px rgba(180, 190, 254, 0.18);
}

/* Segmented control */
.segment {
  background: #2b2d3a;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 4px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.segbtn {
  border: 0;
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  color: var(--text);
  background: transparent;
  font-weight: 700;
}

.segbtn.active {
  background: linear-gradient(90deg, var(--lav), var(--sky));
  color: #0b0b10;
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 6px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 0;
  cursor: pointer;
  background: linear-gradient(90deg, var(--lav), var(--sky));
  color: #0b0b10;
  font-weight: 800;
  transition: transform 0.06s ease, filter 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn[disabled] {
  filter: saturate(0.2) brightness(0.85);
  cursor: default;
}

/* Toasts (top-right) */
#toasts {
  position: fixed;
  right: 16px;
  top: 16px;
  display: grid;
  gap: 10px;
  z-index: 9999;
}

.toast {
  background: #2b2d3a;
  border: 1px solid var(--line);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 14px;
  min-width: 260px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 10px;
  align-items: flex-start;
  animation: slideIn 0.25s ease both;
}

.toast.ok {
  border-color: var(--green);
}

.toast.err {
  border-color: var(--red);
}

.toast .dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  margin-top: 5px;
}

.toast.ok .dot {
  background: var(--green);
}

.toast.err .dot {
  background: var(--red);
}

.toast .x {
  margin-left: auto;
  cursor: pointer;
  opacity: 0.6;
}

.credit {
  position: fixed;
  right: 18px;
  bottom: 16px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s ease;
  opacity: 0.75;
}
.credit:hover {
  color: var(--lav);
  opacity: 1;
}

@keyframes slideIn {
  from {
    transform: translateY(-10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}