/* ============================================================
   External Auth Page — Frequency Studio Design System
   ============================================================ */

:root {
  /* --- Backgrounds --- */
  --fs-bg-page:    #121212;
  --fs-bg-panel:   #1E1E1E;
  --fs-bg-surface: #2A2A2A;
  --fs-bg-stripe:  #181818;

  /* --- Text --- */
  --fs-text-primary:   #FFFFFF;
  --fs-text-secondary: #A0A0A0;
  --fs-text-inactive:  #555555;
  --fs-text-link:      #00B2FF;
  --fs-text-error:     #FF4444;
  --fs-text-success:   #00E676;

  /* --- Buttons: Primary Blue --- */
  --fs-btn-blue:        #0091FF;
  --fs-btn-blue-hover:  #00E5FF;
  --fs-btn-blue-press:  #006BB3;

  /* --- Buttons: Disabled --- */
  --fs-btn-disabled-bg:   #333333;
  --fs-btn-disabled-text: #777777;

  /* --- Borders --- */
  --fs-border-divider: #333333;
  --fs-border-focus:   #0091FF;

  /* --- Spacing --- */
  --fs-xs:  4px;
  --fs-sm:  8px;
  --fs-md:  12px;
  --fs-lg:  16px;
  --fs-xl:  24px;
  --fs-2xl: 32px;

  /* --- Typography --- */
  --fs-font: 'Inter', system-ui, sans-serif;

  /* --- Radii --- */
  --fs-radius-btn:   4px;
  --fs-radius-panel: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--fs-font);
  background: var(--fs-bg-page);
  color: var(--fs-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  overflow: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

#asciiCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

.container {
  position: relative;
  z-index: 1;
  background: rgba(30, 30, 30, 0.35);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 24px;
  padding: 40px;
  width: 420px;
  max-width: 90vw;
  box-shadow: 0 0 80px rgba(0, 145, 255, 0.08), 0 4px 32px rgba(0, 0, 0, 0.5);
}

/* Logo */
.logo {
  text-align: center;
  margin-bottom: var(--fs-2xl);
}

.logo img {
  height: 32px;
  width: auto;
}

.logo p {
  font-size: 0.875rem;
  color: var(--fs-text-secondary);
  margin-top: var(--fs-sm);
}

/* Step indicator */
.step-indicator {
  display: flex;
  gap: var(--fs-sm);
  justify-content: center;
  margin-bottom: var(--fs-xl);
}

.step {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  transition: all 0.3s;
}

.step.active {
  background: var(--fs-btn-blue);
  color: var(--fs-text-primary);
}

.step.done {
  background: var(--fs-text-success);
  color: var(--fs-bg-page);
}

.step.pending {
  background: var(--fs-bg-surface);
  color: var(--fs-text-inactive);
}

.step-line {
  width: 36px;
  height: 2px;
  background: var(--fs-border-divider);
  align-self: center;
  transition: background 0.3s;
}

.step-line.done {
  background: var(--fs-text-success);
}

/* Labels */
label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--fs-text-secondary);
  margin-bottom: 6px;
  margin-top: var(--fs-lg);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.field-hint {
  font-size: 0.875rem;
  color: var(--fs-text-secondary);
  margin-bottom: var(--fs-md);
  line-height: 1.5;
}

.field-hint strong {
  color: var(--fs-text-primary);
  font-weight: 600;
}

/* Inputs */
input {
  width: 100%;
  padding: 10px 12px;
  background: var(--fs-bg-surface) !important;
  border: 1px solid var(--fs-border-divider);
  border-radius: var(--fs-radius-btn);
  color: var(--fs-text-primary) !important;
  font-family: var(--fs-font);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s;
  color-scheme: dark;
  -webkit-text-fill-color: var(--fs-text-primary);
}

input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
  -webkit-box-shadow: 0 0 0 30px var(--fs-bg-surface) inset !important;
  -webkit-text-fill-color: var(--fs-text-primary) !important;
  background-color: var(--fs-bg-surface) !important;
  caret-color: var(--fs-text-primary);
  transition: background-color 5000s ease-in-out 0s;
}

input:focus {
  border-color: var(--fs-border-focus);
}

input::placeholder {
  color: var(--fs-text-inactive);
  -webkit-text-fill-color: var(--fs-text-inactive);
}

input.input-error {
  border-color: var(--fs-text-error);
}

/* OTP input */
#input-otp {
  padding: 14px;
  font-size: 1.5rem;
  font-weight: 600;
  text-align: center;
  letter-spacing: 10px;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* Buttons */
button[type="submit"] {
  width: 100%;
  padding: 12px;
  margin-top: var(--fs-xl);
  background: var(--fs-btn-blue);
  border: none;
  border-radius: var(--fs-radius-btn);
  color: var(--fs-text-primary);
  font-family: var(--fs-font);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  letter-spacing: 0.02em;
}

button[type="submit"]:hover {
  background: var(--fs-btn-blue-hover);
}

button[type="submit"]:active {
  background: var(--fs-btn-blue-press);
}

button[type="submit"]:disabled {
  background: var(--fs-btn-disabled-bg);
  color: var(--fs-btn-disabled-text);
  cursor: not-allowed;
}

.btn-tertiary {
  display: block;
  width: 100%;
  padding: var(--fs-md);
  font-size: 0.75rem;
  color: var(--fs-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  text-align: center;
  font-family: var(--fs-font);
  margin-top: var(--fs-xs);
  transition: color 0.15s;
}

.btn-tertiary:hover {
  color: var(--fs-text-link);
}

/* Error banner */
.error {
  background: rgba(255, 68, 68, 0.1);
  border: 1px solid rgba(255, 68, 68, 0.3);
  color: var(--fs-text-error);
  padding: 10px 12px;
  border-radius: var(--fs-radius-btn);
  margin-top: var(--fs-lg);
  font-size: 0.75rem;
  text-align: center;
  line-height: 1.4;
}

/* Success */
.success-view h2 {
  color: var(--fs-text-success);
  font-size: 1.25rem;
  text-align: center;
  margin-bottom: var(--fs-md);
}

.success-view p {
  color: var(--fs-text-secondary);
  font-size: 0.875rem;
  text-align: center;
  line-height: 1.6;
}

/* Note */
.note {
  font-size: 0.75rem;
  color: var(--fs-text-inactive);
  text-align: center;
  margin-top: var(--fs-xl);
  line-height: 1.5;
}

/* Utilities */
.hidden { display: none !important; }

/* Responsive */
@media (max-width: 480px) {
  .container {
    padding: var(--fs-2xl) var(--fs-xl);
    border-radius: var(--fs-lg);
  }
}