:root, [data-theme="dark"] {
  --bg: #0d0e11;
  --surface: #15171c;
  --card: #1c1f27;
  --input-bg: #12141a;
  --accent: #e8c96a;
  --accent2: #5be5c5;
  --text: #f0eeea;
  --muted: #7a7e8a;
  --border: rgba(255,255,255,0.08);
  --border-focus: rgba(232,201,106,0.5);
  --error: #ff6b6b;
  --success: #5be5c5;
}
[data-theme="light"] {
  --bg: #f0ede8;
  --surface: #e8e5e0;
  --card: #ffffff;
  --input-bg: #f5f3ef;
  --accent: #c9a030;
  --accent2: #2aab8e;
  --text: #1a1a1a;
  --muted: #888;
  --border: rgba(0,0,0,0.1);
  --border-focus: rgba(201,160,48,0.5);
  --error: #d94040;
  --success: #2aab8e;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
}

/* Noise texture */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0;
}

/* ── LEFT PANEL ── */
.left-panel {
  position: relative;
  width: 45%;
  min-height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 3rem;
  overflow: hidden;
  flex-shrink: 0;
}

.panel-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.pg1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(232,201,106,.13) 0%, transparent 70%);
  top: -100px; left: -100px;
}
.pg2 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(91,229,197,.09) 0%, transparent 70%);
  bottom: 80px; right: -80px;
}

.panel-logo {
  position: relative; z-index: 1;
  font-family: 'Playfair Display', serif;
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -.5px;
}
.panel-logo span { color: var(--text); }

.panel-content {
  position: relative; z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 0;
}

.panel-eyebrow {
  font-size: .75rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent2);
  font-weight: 500;
  margin-bottom: 1rem;
}

.panel-headline {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 1.5rem;
}
.panel-headline em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.panel-desc {
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.8;
  font-weight: 300;
  max-width: 360px;
  margin-bottom: 2.5rem;
}

.panel-perks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .9rem;
}
.panel-perks li {
  display: flex;
  align-items: center;
  gap: .8rem;
  font-size: .88rem;
  color: var(--muted);
  font-weight: 300;
}
.perk-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: rgba(232,201,106,.1);
  display: flex; align-items: center; justify-content: center;
  font-size: .95rem;
  flex-shrink: 0;
}
.perk-icon.teal { background: rgba(91,229,197,.1); }

.panel-testimonial {
  position: relative; z-index: 1;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem 1.6rem;
}
.testimonial-text {
  font-size: .87rem;
  line-height: 1.7;
  color: var(--muted);
  font-weight: 300;
  margin-bottom: .9rem;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: .7rem;
}
.author-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem; font-weight: 700; color: #0d0e11;
}
.author-name { font-size: .82rem; font-weight: 600; }
.author-role { font-size: .75rem; color: var(--muted); }

/* Decorative grid pattern */
.panel-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: .4;
  pointer-events: none;
}

/* ── RIGHT PANEL (FORM) ── */
.right-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

.auth-box {
  width: 100%;
  max-width: 460px;
}

/* Tabs */
.auth-tabs {
  display: flex;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 5px;
  margin-bottom: 2.5rem;
}
.tab-btn {
  flex: 1;
  padding: .7rem;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
  font-size: .9rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: all .25s;
}
.tab-btn.active {
  background: var(--accent);
  color: #0d0e11;
  font-weight: 600;
}

/* Form panels */
.form-panel { display: none; animation: formFadeIn .35s ease; }
.form-panel.active { display: block; }

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

.form-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.9rem;
  font-weight: 900;
  letter-spacing: -.5px;
  margin-bottom: .4rem;
}
.form-sub {
  color: var(--muted);
  font-size: .88rem;
  font-weight: 300;
  margin-bottom: 2rem;
  line-height: 1.6;
}
.form-sub a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

/* Input groups */
.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.input-group {
  margin-bottom: 1.2rem;
}
.input-label {
  display: block;
  font-size: .8rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: .3px;
  margin-bottom: .5rem;
}
.input-wrap {
  position: relative;
}
.input-icon {
  position: absolute;
  left: 1rem; top: 50%;
  transform: translateY(-50%);
  font-size: .95rem;
  pointer-events: none;
  opacity: .5;
}
.input-wrap input,
.input-wrap select {
  width: 100%;
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: 9px;
  padding: .8rem 1rem .8rem 2.7rem;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: .9rem;
  font-weight: 300;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  -webkit-appearance: none;
}
.input-wrap select {
  cursor: pointer;
}
.input-wrap input::placeholder { color: var(--muted); }
.input-wrap input:focus,
.input-wrap select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(232,201,106,.08);
}
.input-wrap input.error { border-color: var(--error); }

/* Password toggle */
.pw-toggle {
  position: absolute;
  right: 1rem; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: .9rem;
  transition: color .2s;
  padding: 0;
}
.pw-toggle:hover { color: var(--text); }

/* Password strength */
.strength-bar {
  display: flex;
  gap: 4px;
  margin-top: .5rem;
}
.strength-seg {
  flex: 1; height: 3px;
  background: var(--border);
  border-radius: 2px;
  transition: background .3s;
}
.strength-seg.weak   { background: #ff6b6b; }
.strength-seg.medium { background: var(--accent); }
.strength-seg.strong { background: var(--accent2); }
.strength-label {
  font-size: .72rem;
  color: var(--muted);
  margin-top: .3rem;
}

/* Checkbox */
.check-group {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  margin-bottom: 1.4rem;
}
.check-group input[type="checkbox"] {
  width: 17px; height: 17px;
  accent-color: var(--accent);
  margin-top: 2px;
  flex-shrink: 0;
  cursor: pointer;
}
.check-group label {
  font-size: .82rem;
  color: var(--muted);
  line-height: 1.6;
  cursor: pointer;
}
.check-group label a { color: var(--accent); text-decoration: none; }

/* Error message */
.field-error {
  font-size: .75rem;
  color: var(--error);
  margin-top: .35rem;
  display: none;
}
.field-error.show { display: block; }

/* Submit button */
.btn-submit {
  width: 100%;
  padding: .95rem;
  background: var(--accent);
  color: #0d0e11;
  border: none;
  border-radius: 10px;
  font-family: 'DM Sans', sans-serif;
  font-size: .95rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, opacity .2s;
  box-shadow: 0 4px 20px rgba(232,201,106,.25);
  letter-spacing: .2px;
  position: relative;
  overflow: hidden;
}
.btn-submit::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.15), transparent);
  opacity: 0; transition: opacity .2s;
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,201,106,.35); }
.btn-submit:hover::after { opacity: 1; }
.btn-submit:active { transform: translateY(0); }
.btn-submit.loading { opacity: .7; pointer-events: none; }

/* Divider */
.divider {
  display: flex; align-items: center; gap: 1rem;
  margin: 1.5rem 0;
}
.divider::before, .divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}
.divider span { font-size: .78rem; color: var(--muted); white-space: nowrap; }

/* Social row */
.social-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
}
.social-btn {
  display: flex; align-items: center; justify-content: center; gap: .6rem;
  padding: .8rem .6rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: .84rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color .2s, background .2s, transform .15s, box-shadow .2s;
  text-decoration: none;
  white-space: nowrap;
}
.social-btn:hover { border-color: rgba(255,255,255,.22); background: rgba(255,255,255,.05); transform: translateY(-1px); }

/* Google button */
.google-btn {
  background: #fff;
  color: #3c4043;
  border-color: #dadce0;
  font-weight: 600;
}
.google-btn:hover {
  background: #f8f9fa;
  border-color: #bdc1c6;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
  transform: translateY(-1px);
}
.g-logo { flex-shrink: 0; }

/* Compulsory terms highlight */
.check-group.required-shake { animation: shake .4s ease; }
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-6px); }
  40%      { transform: translateX(6px); }
  60%      { transform: translateX(-4px); }
  80%      { transform: translateX(4px); }
}
.check-group input[type="checkbox"].must-check {
  outline: 2px solid var(--error);
  outline-offset: 2px;
}

.input-icon.at-sign {
  font-size: .95rem;
  font-weight: 700;
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
}
.forgot-link {
  display: block;
  text-align: right;
  font-size: .8rem;
  color: var(--accent);
  text-decoration: none;
  margin-top: -.6rem;
  margin-bottom: 1.4rem;
  transition: opacity .2s;
}
.forgot-link:hover { opacity: .75; }

/* Success toast */
.toast {
  position: fixed;
  bottom: 2rem; right: 2rem;
  background: var(--card);
  border: 1px solid rgba(91,229,197,.35);
  border-radius: 12px;
  padding: 1rem 1.4rem;
  display: flex; align-items: center; gap: .8rem;
  font-size: .88rem;
  color: var(--text);
  box-shadow: 0 8px 32px rgba(0,0,0,.4);
  z-index: 999;
  transform: translateY(100px);
  opacity: 0;
  transition: transform .4s cubic-bezier(.34,1.56,.64,1), opacity .3s;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast-icon { font-size: 1.2rem; }

/* Floating decorative elements */
.deco-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border);
  pointer-events: none;
}
.dr1 { width: 300px; height: 300px; top: -50px; right: -80px; }
.dr2 { width: 180px; height: 180px; bottom: 60px; left: -60px; border-color: rgba(232,201,106,.08); }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .left-panel { display: none; }
  .right-panel { padding: 2rem 1.5rem; align-items: flex-start; padding-top: 3rem; }
  body { display: block; }
}

@media (max-width: 480px) {
  .input-row { grid-template-columns: 1fr; }
  .right-panel { padding: 1.5rem 1.2rem; }
  .auth-box { max-width: 100%; }
  .form-title { font-size: 1.6rem; }
  .tab-btn { font-size: .82rem; padding: .6rem .4rem; }
  .social-row { grid-template-columns: 1fr; }
  .btn-submit { padding: .85rem; font-size: .9rem; }
  .check-group label { font-size: .78rem; }
}
@media (max-width: 360px) {
  .right-panel { padding: 1.2rem .9rem; }
  .auth-tabs { padding: 4px; }
  .input-wrap input, .input-wrap select { font-size: .85rem; padding: .72rem .9rem .72rem 2.5rem; }
}

/* Back to home link */
.back-home {
  display: inline-flex; align-items: center; gap: .5rem;
  text-decoration: none;
  color: var(--muted);
  font-size: .82rem;
  margin-bottom: 2rem;
  transition: color .2s;
}
.back-home:hover { color: var(--text); }

/* Mobile logo */
.mobile-logo {
  display: none;
  font-family: 'Playfair Display', serif;
  font-weight: 900;
  font-size: 1.4rem;
  color: var(--accent);
  text-decoration: none;
  margin-bottom: 2rem;
}
.mobile-logo span { color: var(--text); }

@media (max-width: 900px) {
  .mobile-logo { display: block; }
  .back-home { margin-bottom: 1rem; }
}