/* knox · code — login page styling. Mirrors the Argus mint-glow palette
   so the family of Frank-services feels cohesive, but with a code-editor
   identity (terminal caret, slightly cooler accent). */

:root {
  --bg-0: #06090b;
  --bg-1: #0a1014;
  --bg-2: #131c22;
  --ink-1: #e7eef2;
  --ink-2: #93a1aa;
  --ink-3: #525e67;
  --accent: #5dd6a8;
  --accent-glow: rgba(93, 214, 168, 0.45);
  --accent-soft: rgba(93, 214, 168, 0.12);
  --violet: #b18cff;
  --violet-glow: rgba(177, 140, 255, 0.4);
  --error: #ff6b7a;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: radial-gradient(ellipse at top, var(--bg-1) 0%, var(--bg-0) 70%);
  color: var(--ink-1);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  position: relative;
  overflow: hidden;
}

.vignette {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at top, transparent 40%, rgba(0,0,0,0.55) 100%),
    radial-gradient(ellipse at bottom, transparent 40%, rgba(0,0,0,0.45) 100%);
  pointer-events: none;
  z-index: 0;
}
.ambient-glow {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 10%, var(--accent-soft) 0%, transparent 35%),
    radial-gradient(circle at 80% 90%, rgba(177, 140, 255, 0.10) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
  filter: blur(40px);
}

.signin {
  position: relative;
  z-index: 1;
  width: min(420px, 92vw);
  padding: 36px 28px 28px;
  background: linear-gradient(180deg, rgba(20, 28, 34, 0.85), rgba(13, 19, 23, 0.92));
  border: 1px solid rgba(93, 214, 168, 0.18);
  border-radius: 18px;
  box-shadow:
    0 0 0 1px rgba(93, 214, 168, 0.05) inset,
    0 30px 80px rgba(0, 0, 0, 0.5),
    0 0 60px var(--accent-soft);
  text-align: center;
  backdrop-filter: blur(10px);
}

/* The "<|>" code mark — small terminal-cursor motif */
.code-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: 'Cinzel', serif;
  font-size: 42px;
  line-height: 1;
  margin-bottom: 12px;
  color: var(--accent);
  text-shadow: 0 0 18px var(--accent-glow);
  user-select: none;
}
.code-mark .b {
  font-weight: 700;
  opacity: 0.85;
}
.code-mark .caret {
  display: inline-block;
  width: 3px;
  height: 32px;
  background: var(--accent);
  border-radius: 1px;
  box-shadow: 0 0 12px var(--accent-glow);
  animation: caret-blink 1.1s steps(2, end) infinite;
  vertical-align: middle;
  margin: 0 4px;
}
@keyframes caret-blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0.15; }
}

.brand {
  font-family: 'Cinzel', serif;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.3em;
  margin: 8px 0 4px;
  color: var(--ink-1);
}

.tagline {
  font-size: 12px;
  color: var(--ink-2);
  margin: 0 0 28px;
  letter-spacing: 0.08em;
}

form { margin: 0; }

.field {
  display: flex;
  align-items: stretch;
  gap: 8px;
  border-radius: 12px;
  padding: 4px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(93, 214, 168, 0.18);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

#password {
  flex: 1 1 auto;
  background: transparent;
  border: 0;
  outline: 0;
  padding: 14px 14px;
  color: var(--ink-1);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 14px;
  letter-spacing: 0.08em;
  min-width: 0;
}
#password::placeholder {
  color: var(--ink-3);
  letter-spacing: 0.06em;
}

#enter-btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 18px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #38d199);
  color: #0a1014;
  font-family: 'Cinzel', serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.18em;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.08s ease;
  box-shadow: 0 0 24px var(--accent-glow);
}
#enter-btn:hover { filter: brightness(1.12); }
#enter-btn:active { transform: translateY(1px); }
#enter-btn .btn-arrow { font-weight: 500; font-size: 16px; }
#enter-btn.loading {
  pointer-events: none;
  opacity: 0.7;
}
#enter-btn.loading .btn-label { opacity: 0.6; }
#enter-btn.loading .btn-arrow { animation: spin 0.9s linear infinite; }
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.error {
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(255, 107, 122, 0.10);
  border: 1px solid rgba(255, 107, 122, 0.30);
  border-radius: 8px;
  color: var(--error);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.hint {
  margin: 22px 0 0;
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.05em;
}
.hint code {
  font-family: 'JetBrains Mono', monospace;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--ink-2);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.signin-footer {
  position: fixed;
  bottom: 18px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 10px;
  color: var(--ink-3);
  letter-spacing: 0.16em;
  z-index: 1;
}
.signin-footer code {
  font-family: 'JetBrains Mono', monospace;
  color: var(--ink-2);
}