/* ============================================================
  Teka Ready — auth.css
   Modern Auth Page — Total Rework 2026
   ============================================================ */

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

a[href], button, label[for], select, summary,
input[type="checkbox"], input[type="radio"],
input[type="submit"], input[type="button"] {
  cursor: pointer;
}

:root {
  --primary: #6366F1;
  --primary-dark: #4F46E5;
  --primary-light: #818CF8;
  --accent: #06B6D4;
  --accent-warm: #F59E0B;
  --text-main: #0F172A;
  --text-muted: #64748B;
  --surface: #FFFFFF;
  --surface-soft: #F8FAFC;
  --surface-soft-2: #EEF2FF;
  --border: rgba(148,163,184,.2);
  --bg: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --bg-mesh: radial-gradient(at 20% 80%, rgba(99,102,241,.25) 0%, transparent 50%),
             radial-gradient(at 80% 20%, rgba(139,92,246,.2) 0%, transparent 50%),
             radial-gradient(at 50% 50%, rgba(6,182,212,.1) 0%, transparent 60%);
}

[data-theme="dark"] {
  --text-main: #E2E8F0;
  --text-muted: #94A3B8;
  --surface: #0f1629;
  --surface-soft: #111827;
  --surface-soft-2: rgba(99,102,241,.12);
  --border: rgba(148,163,184,.12);
  --bg: linear-gradient(135deg, #0F0C29 0%, #1a1145 50%, #302B63 100%);
}

body {
  min-height: 100vh;
  font-family: 'Plus Jakarta Sans', 'DM Sans', system-ui, -apple-system, sans-serif;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--bg-mesh);
  pointer-events: none;
  z-index: 0;
}

@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(20px, -30px) scale(1.05); }
  50% { transform: translate(-15px, 15px) scale(.95); }
  75% { transform: translate(10px, 25px) scale(1.02); }
}

.auth-layout {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(520px, 92%);
  margin: 0 auto;
  padding: 72px 0 32px;
  position: relative;
  z-index: 1;
}

.auth-panel {
  width: 100%;
  position: relative;
  z-index: 2;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 36px 32px;
  backdrop-filter: blur(24px) saturate(1.6);
  -webkit-backdrop-filter: blur(24px) saturate(1.6);
  box-shadow: 0 32px 64px rgba(0,0,0,.18), 0 0 0 1px rgba(255,255,255,.05) inset;
  animation: fade-up .6s ease-out;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.back-link {
  display: inline-flex;
  align-items: center;
  position: fixed;
  top: 16px;
  left: 18px;
  z-index: 30;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 9999px;
  padding: 8px 16px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: .85rem;
  font-weight: 500;
  transition: all .25s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
}

.back-link:hover {
  color: var(--primary);
  border-color: rgba(99,102,241,.3);
  transform: translateX(-2px);
  box-shadow: 0 4px 16px rgba(99,102,241,.1);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}

.panel-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.025em;
  margin-bottom: 4px;
}

.panel-subtitle {
  color: var(--text-muted);
  font-size: .84rem;
  line-height: 1.5;
}

.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 4px;
  margin-bottom: 24px;
}

.tab-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 12px;
  border-radius: 12px;
  font-family: inherit;
  font-weight: 600;
  font-size: .9rem;
  cursor: pointer;
  transition: all .3s cubic-bezier(.4,0,.2,1);
  position: relative;
}

.tab-btn.active {
  background: var(--surface);
  color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.08);
}

.auth-form {
  display: none;
  gap: 10px;
}

.auth-form.active {
  display: grid;
  animation: fade-up .35s ease-out;
}

.auth-form label {
  font-size: .84rem;
  font-weight: 600;
  margin-top: 6px;
  color: var(--text-main);
}

.auth-form input {
  border: 1.5px solid var(--border);
  background: color-mix(in srgb, var(--surface-soft) 80%, var(--surface));
  color: var(--text-main);
  padding: 13px 16px;
  border-radius: 12px;
  font-family: inherit;
  font-size: .9rem;
  transition: all .3s ease;
}

.auth-form input::placeholder {
  color: color-mix(in srgb, var(--text-muted) 65%, transparent);
}

.auth-form input:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}

.password-wrap { position: relative; }
.password-wrap input { width: 100%; padding-right: 75px; }

.password-toggle {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: .74rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all .25s ease;
}

.password-toggle:hover {
  color: var(--primary);
  border-color: rgba(99,102,241,.3);
}

.remember-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  font-size: .84rem;
  font-weight: 500;
  color: var(--text-muted);
}

.remember-wrap input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  border-radius: 4px;
}

.password-hint {
  font-size: .75rem;
  color: var(--text-muted);
  margin-top: -2px;
  line-height: 1.5;
}

.password-strength {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.password-strength-bars {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.password-strength-bars span {
  display: block;
  height: 8px;
  border-radius: 9999px;
  background: color-mix(in srgb, var(--surface-soft-2) 60%, var(--surface));
  border: 1px solid var(--border);
  transition: background-color .25s ease, border-color .25s ease, transform .25s ease;
}

.password-strength-text {
  font-size: .75rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.password-strength[data-tone="weak"] .password-strength-bars span:nth-child(-n+1) {
  background: rgba(239,68,68,.8);
  border-color: rgba(239,68,68,.35);
}

.password-strength[data-tone="fair"] .password-strength-bars span:nth-child(-n+2) {
  background: rgba(245,158,11,.85);
  border-color: rgba(245,158,11,.35);
}

.password-strength[data-tone="good"] .password-strength-bars span:nth-child(-n+3) {
  background: rgba(59,130,246,.85);
  border-color: rgba(59,130,246,.35);
}

.password-strength[data-tone="strong"] .password-strength-bars span:nth-child(-n+4) {
  background: rgba(16,185,129,.85);
  border-color: rgba(16,185,129,.35);
}

.password-strength[data-tone="weak"] .password-strength-text { color: #DC2626; }
.password-strength[data-tone="fair"] .password-strength-text { color: #D97706; }
.password-strength[data-tone="good"] .password-strength-text { color: #2563EB; }
.password-strength[data-tone="strong"] .password-strength-text { color: #059669; }

[data-theme="dark"] .password-strength[data-tone="weak"] .password-strength-text { color: #F87171; }
[data-theme="dark"] .password-strength[data-tone="fair"] .password-strength-text { color: #FBBF24; }
[data-theme="dark"] .password-strength[data-tone="good"] .password-strength-text { color: #93C5FD; }
[data-theme="dark"] .password-strength[data-tone="strong"] .password-strength-text { color: #34D399; }

.submit-btn {
  margin-top: 14px;
  border: none;
  border-radius: 14px;
  padding: 14px;
  font-family: inherit;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  color: white;
  background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #06B6D4 100%);
  background-size: 200% 200%;
  box-shadow: 0 10px 25px rgba(99,102,241,.3);
  transition: all .3s cubic-bezier(.4,0,.2,1);
  position: relative;
  overflow: hidden;
}

.submit-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.15), transparent);
  opacity: 0;
  transition: opacity .3s ease;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(99,102,241,.35);
  background-position: 100% 50%;
}

.submit-btn:hover::after { opacity: 1; }
.submit-btn:active { transform: translateY(0); }

.form-footnote {
  margin-top: 8px;
  color: var(--text-muted);
  font-size: .76rem;
  line-height: 1.6;
}

.form-footnote a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.form-footnote a:hover { text-decoration: underline; }

.auth-message {
  min-height: 44px;
  margin-top: 16px;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: .86rem;
  color: var(--text-muted);
  background: color-mix(in srgb, var(--surface-soft-2) 30%, transparent);
  transition: all .3s ease;
}

.auth-message:empty {
  min-height: 0;
  margin-top: 0;
  border: 0;
  padding: 0;
  background: transparent;
}

.auth-message.success {
  color: #059669;
  border-color: rgba(16,185,129,.25);
  background: rgba(16,185,129,.06);
}

.auth-message.error {
  color: #DC2626;
  border-color: rgba(220,38,38,.25);
  background: rgba(220,38,38,.06);
}

/* ===== THEME TOGGLE ===== */
.switch {
  font-size: 17px;
  position: relative;
  display: inline-block;
  width: 4em;
  height: 2.2em;
  border-radius: 30px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #2a2a2a;
  transition: 0.4s;
  border-radius: 30px;
  overflow: hidden;
}
.slider:before {
  position: absolute;
  content: "";
  height: 1.2em;
  width: 1.2em;
  border-radius: 20px;
  left: 0.5em;
  bottom: 0.5em;
  transition: 0.4s;
  transition-timing-function: cubic-bezier(0.81, -0.04, 0.38, 1.5);
  box-shadow: inset 8px -4px 0px 0px #fff;
}
.switch input:checked + .slider {
  background-color: #00a6ff;
}
.switch input:checked + .slider:before {
  transform: translateX(1.8em);
  box-shadow: inset 15px -4px 0px 15px #ffcf48;
}
.star {
  background-color: #fff;
  border-radius: 50%;
  position: absolute;
  width: 5px;
  transition: all 0.4s;
  height: 5px;
}
.star_1 { left: 2.5em; top: 0.5em; }
.star_2 { left: 2.2em; top: 1.2em; }
.star_3 { left: 3em;   top: 0.9em; }
.switch input:checked ~ .slider .star { opacity: 0; }
.cloud {
  width: 3.5em;
  position: absolute;
  bottom: -1.4em;
  left: -1.1em;
  opacity: 0;
  transition: all 0.4s;
}
.switch input:checked ~ .slider .cloud { opacity: 1; }

/* Responsive */

/* ============================================================
   RESPONSIVE — auth.css
   Mobile = bottom-sheet style, full-width panel
   ============================================================ */

@media (max-width: 640px) {
  body { background-attachment: scroll; }

  /* Auth layout — full bottom sheet */
  .auth-layout {
    width: 100%;
    padding: 0;
    min-height: 100dvh;
    align-items: flex-end;
    justify-content: flex-end;
  }

  .auth-panel {
    width: 100%;
    border-radius: 28px 28px 0 0;
    border-bottom: none;
    padding: 8px 22px 40px;
    min-height: 72dvh;
    box-shadow: 0 -12px 48px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.08);
    animation: auth-slide-up .38s cubic-bezier(.25,.46,.45,.94);
  }

  @keyframes auth-slide-up {
    from { transform: translateY(50px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
  }

  /* Drag handle */
  .auth-panel::before {
    content: '';
    display: block;
    width: 44px;
    height: 4px;
    background: rgba(148,163,184,.3);
    border-radius: 2px;
    margin: 12px auto 20px;
  }

  /* Back link floats on top of the gradient */
  .back-link {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 50;
    color: rgba(255,255,255,.9);
    background: rgba(255,255,255,.15);
    border-color: rgba(255,255,255,.28);
    font-size: .8rem;
    padding: 8px 14px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }
  .back-link:hover {
    color: white;
    background: rgba(255,255,255,.22);
    border-color: rgba(255,255,255,.45);
    transform: translateX(-2px);
  }

  /* Panel header */
  .panel-header { margin-bottom: 18px; gap: 10px; }
  .panel-header h2 { font-size: 1.12rem; }
  .panel-subtitle { font-size: .78rem; }

  /* Tabs */
  .auth-tabs { border-radius: 14px; padding: 3px; margin-bottom: 18px; }
  .tab-btn   { padding: 12px 8px; font-size: .88rem; border-radius: 12px; }

  /* Form fields — big tap targets */
  .auth-form        { gap: 8px; }
  .auth-form label  { font-size: .82rem; margin-top: 4px; }
  .auth-form input  {
    padding: 15px 16px;
    font-size: .93rem;
    border-radius: 14px;
    min-height: 52px;
  }
  .password-wrap input { padding-right: 80px; }
  .password-toggle {
    right: 10px;
    padding: 8px 12px;
    font-size: .72rem;
    min-height: 38px;
    border-radius: 10px;
  }

  /* Remember me */
  .remember-wrap { font-size: .82rem; gap: 10px; margin-top: 4px; }
  .remember-wrap input { width: 20px; height: 20px; }

  /* Submit — full width, prominent */
  .submit-btn {
    width: 100%;
    padding: 16px;
    font-size: .97rem;
    border-radius: 16px;
    margin-top: 14px;
    min-height: 56px;
    letter-spacing: -.01em;
  }

  /* Password strength */
  .password-strength-bars span { height: 6px; }
  .password-strength-text { font-size: .72rem; }
  .password-hint { font-size: .72rem; }

  /* Messages */
  .auth-message { font-size: .83rem; padding: 13px 16px; border-radius: 14px; }

  /* Footnote */
  .form-footnote { font-size: .74rem; text-align: center; line-height: 1.6; }
}

/* ── XS ── */
@media (max-width: 390px) {
  .auth-panel { padding: 8px 18px 36px; min-height: 76dvh; }
  .panel-header h2 { font-size: 1.02rem; }
  .auth-form input { min-height: 50px; }
  .submit-btn { min-height: 52px; font-size: .92rem; }
}

/* ===== TYPOGRAPHY POLISH ===== */
h1, h2, h3, .panel-header h2 {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
}
p, label, input, .panel-subtitle, .form-footnote {
  font-family: 'DM Sans', 'Plus Jakarta Sans', system-ui, sans-serif;
}
button, .tab-btn, .submit-btn, .password-toggle {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-weight: 700;
}
.auth-panel       { border-radius: 32px; }
.auth-form input  { font-family: 'DM Sans', system-ui, sans-serif; }
.submit-btn       { letter-spacing: -.01em; }