/* ============================
   LUCA SYSTEM — Auth Pages CSS
   login.html & register.html
   ============================ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

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

/* ---- LIGHT THEME VARIABLES ---- */
:root,
[data-theme="light"] {
  --primary:        #1a56db;
  --primary-light:  #3b82f6;
  --primary-glow:   rgba(26,86,219,0.18);
  --success:        #10b981;
  --danger:         #ef4444;

  --bg:             #f0f4ff;
  --surface:        #ffffff;
  --surface-2:      #f6f9ff;
  --border:         #dde4f5;

  --text-1:         #0d1b3e;
  --text-2:         #4b5a80;
  --text-3:         #8898b8;

  --equity-bg:      #f0fdf4;
  --equity-text:    #15803d;
  --assets-bg:      #eff6ff;
  --assets-text:    #1d4ed8;

  --card-shadow:    0 20px 60px rgba(13,27,62,0.14);
  --input-bg:       #ffffff;

  --canvas-dot:     rgba(26,86,219,0.12);
  --canvas-line:    rgba(26,86,219,0.06);

  --font: 'Sora', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', monospace;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
}

/* ---- DARK THEME VARIABLES ---- */
[data-theme="dark"] {
  --primary:        #3b82f6;
  --primary-light:  #60a5fa;
  --primary-glow:   rgba(59,130,246,0.22);
  --success:        #34d399;
  --danger:         #f87171;

  --bg:             #0b0f1e;
  --surface:        #111827;
  --surface-2:      #1a2235;
  --border:         #1f2d45;

  --text-1:         #e8edf8;
  --text-2:         #94a3c0;
  --text-3:         #4b6080;

  --equity-bg:      #052e16;
  --equity-text:    #34d399;
  --assets-bg:      #0f1f3a;
  --assets-text:    #60a5fa;

  --card-shadow:    0 20px 60px rgba(0,0,0,0.5);
  --input-bg:       #0f172a;

  --canvas-dot:     rgba(59,130,246,0.15);
  --canvas-line:    rgba(59,130,246,0.07);
}

/* ---- BASE ---- */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-1);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}

/* ---- BACKGROUND CANVAS ---- */
#bgCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---- THEME TOGGLE BUTTON ---- */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--text-2);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
  transition: all 0.2s;
}
.theme-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: scale(1.08);
}

/* ---- AUTH WRAPPER ---- */
.auth-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 480px;
  padding: 24px 16px;
  margin: auto;
}

/* ---- AUTH CARD ---- */
.auth-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--card-shadow);
  padding: 40px 36px;
  animation: cardIn 0.45s cubic-bezier(.34,1.4,.64,1) both;
  transition: background 0.3s, border-color 0.3s;
}
.auth-card-wide { max-width: 600px; width: 100%; }

.auth-wrapper.wide { max-width: 640px; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---- LOGO ---- */
.auth-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.auth-logo img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-light);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.auth-logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.auth-logo-name { font-size: 1rem; font-weight: 700; color: var(--primary); letter-spacing: -0.3px; }
.auth-logo-sub  { font-size: 0.68rem; color: var(--text-3); }

/* ---- DIVIDER ---- */
.auth-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 20px;
}

/* ---- BADGE / TITLE / SUBTITLE ---- */
.auth-badge {
  display: inline-flex;
  background: var(--assets-bg);
  color: var(--primary);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: -0.5px;
  margin-bottom: 6px;
  line-height: 1.2;
}

.auth-subtitle {
  font-size: 0.82rem;
  color: var(--text-3);
  margin-bottom: 20px;
}

/* ---- BANNERS ---- */
.auth-banner {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.83rem;
  font-weight: 500;
  margin-bottom: 16px;
  line-height: 1.4;
}
.auth-banner.error   { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.auth-banner.success { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }

[data-theme="dark"] .auth-banner.error   { background: #2d0a0a; color: #f87171; border-color: #7f1d1d; }
[data-theme="dark"] .auth-banner.success { background: #052e16; color: #34d399; border-color: #14532d; }

/* ---- FORM ---- */
.form-group { margin-bottom: 14px; }
.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.form-group label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 5px;
}
.form-group label i { color: var(--primary); }

.optional-label {
  text-transform: none;
  font-weight: 400;
  color: var(--text-3);
  font-size: 0.7rem;
  letter-spacing: 0;
}

/* ---- INPUT WRAP ---- */
.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrap input {
  width: 100%;
  font-family: var(--font);
  font-size: 0.875rem;
  color: var(--text-1);
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.3s;
}
.input-wrap input:hover  { border-color: var(--primary-light); }
.input-wrap input:focus  { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-glow); }
.input-wrap input::placeholder { color: var(--text-3); }

/* right-side icons inside input */
.toggle-pw, .input-status {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-3);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0;
  transition: color 0.2s;
}
.toggle-pw:hover { color: var(--primary); }

/* make room for icons */
.input-wrap input:not(:only-child) { padding-right: 36px; }

/* ---- FIELD ERRORS ---- */
.field-error {
  display: block;
  font-size: 0.72rem;
  color: var(--danger);
  margin-top: 4px;
  min-height: 16px;
  font-weight: 500;
}

/* ---- PASSWORD STRENGTH ---- */
.strength-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin-top: 7px;
  overflow: hidden;
}
.strength-fill {
  height: 100%;
  width: 0;
  border-radius: 2px;
  transition: width 0.3s, background 0.3s;
}
.strength-label {
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 3px;
  display: block;
  transition: color 0.3s;
}

/* ---- TERMS ROW ---- */
.terms-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 4px;
}
.terms-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--primary);
}
.terms-row label {
  font-size: 0.78rem;
  color: var(--text-2);
  line-height: 1.5;
  cursor: pointer;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}
.terms-row label a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.terms-row label a:hover { text-decoration: underline; }

/* ---- SUBMIT BUTTON ---- */
.btn-auth {
  width: 100%;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
  transition: all 0.2s;
  box-shadow: 0 2px 12px var(--primary-glow);
  letter-spacing: 0.2px;
}
.btn-auth:hover:not(:disabled) {
  background: #1248b5;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--primary-glow);
}
.btn-auth:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* ---- SWITCH LINK ---- */
.auth-switch {
  text-align: center;
  margin-top: 22px;
  font-size: 0.82rem;
  color: var(--text-3);
}
.auth-switch a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  margin-left: 4px;
}
.auth-switch a:hover { text-decoration: underline; }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ---- RESPONSIVE ---- */
@media (max-width: 540px) {
  .auth-card { padding: 28px 20px; }
  .form-row  { grid-template-columns: 1fr; }
  .auth-title { font-size: 1.3rem; }
}