/* ============================================================
   Atlas OS — Auth Screens v5.0
   Modern two-panel layout, 21st.dev inspired
   ============================================================ */

/* ── Reset & Base ── */
*,
*::before,
*::after { box-sizing: border-box; }

:root {
  --accent: #d4a843;
  --accent-hover: #e0b84e;
  --bg-deep: #050505;
  --bg-panel: #080808;
  --bg-form: #0a0a0a;
  --bg-input: #0f0f0f;
  --border: #1a1a1a;
  --border-focus: #2a2a2a;
  --text: #f0f0f0;
  --text-secondary: #777;
  --text-muted: #555;
  --danger: #ef4444;
  --danger-dim: rgba(239,68,68,0.08);
  --success: #22c55e;
  --radius: 10px;
  --transition: 0.2s ease;
  --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
}

.auth-wrapper {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  overflow: hidden;
  background: var(--bg-deep);
  font-family: var(--font);
}

/* ── Brand Panel ── */
.auth-brand-panel {
  flex: 0 0 46%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 50% 45%, rgba(212,168,67,0.06) 0%, transparent 55%),
    radial-gradient(ellipse 40% 70% at 25% 80%, rgba(212,168,67,0.04) 0%, transparent 50%),
    var(--bg-panel);
  border-right: 1px solid var(--border);
}

.auth-brand-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212,168,67,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212,168,67,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.auth-brand-panel::after {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,168,67,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.auth-brand-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 360px;
}

.auth-brand-logo {
  max-width: 260px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 1.75rem;
  filter: drop-shadow(0 8px 32px rgba(212,168,67,0.10));
}

.auth-brand-name {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.auth-brand-divider {
  width: 36px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(212,168,67,0.4), transparent);
  margin: 1.25rem auto;
  border-radius: 1px;
}

.auth-brand-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}

/* ── Form Panel ── */
.auth-form-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: var(--bg-form);
}

.auth-form-card {
  width: 100%;
  max-width: 420px;
  padding: 0.5rem 0;
}

.auth-form-header {
  margin-bottom: 2rem;
}

.auth-form-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.35rem;
  letter-spacing: -0.03em;
  line-height: 1.25;
}

.auth-form-subtitle {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

/* ── Flash Messages ── */
.auth-flash {
  background: var(--danger-dim);
  border: 1px solid rgba(239,68,68,0.12);
  border-left: 3px solid var(--danger);
  border-radius: 6px;
  padding: 0.75rem 0.9rem;
  margin-bottom: 1.25rem;
  font-size: 0.8rem;
  color: var(--danger);
  display: none;
  line-height: 1.5;
}

.auth-flash.show { display: block; }

.auth-flash.success {
  background: rgba(34,197,94,0.06);
  border-color: rgba(34,197,94,0.12);
  border-left-color: var(--success);
  color: var(--success);
}

/* ── Form Groups ── */
.auth-form-group {
  margin-bottom: 1.2rem;
}

.auth-form-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.auth-input,
.auth-select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.92rem;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  outline: none;
}

.auth-input::placeholder { color: #3a3a3a; }

.auth-input:focus,
.auth-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.08);
  background: #131313;
}

.auth-input:-webkit-autofill {
  -webkit-box-shadow: 0 0 0 30px var(--bg-input) inset;
  -webkit-text-fill-color: var(--text);
  caret-color: var(--text);
}

/* ── Password Wrapper ── */
.auth-input-wrap {
  position: relative;
}

.auth-toggle-password {
  position: absolute;
  right: 0.4rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 1.05rem;
  line-height: 1;
  transition: color var(--transition);
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-toggle-password:hover { color: var(--accent); }

/* ── Select ── */
.auth-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23555' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

/* ── Submit Button ── */
.auth-submit {
  width: 100%;
  padding: 0.82rem;
  background: linear-gradient(135deg, #b89230, #d4a843, #b89230);
  border: none;
  border-radius: var(--radius);
  color: #050505;
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: opacity var(--transition), transform 0.15s, box-shadow var(--transition);
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 50px;
}

.auth-submit:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(212,168,67,0.18);
}

.auth-submit:active { transform: translateY(0); }

.auth-submit:disabled,
.auth-submit.loading {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.auth-submit:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.auth-submit .spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid transparent;
  border-top-color: #050505;
  border-radius: 50%;
  animation: auth-spin 0.6s linear infinite;
}

.auth-submit.loading .spinner { display: inline-block; }

@keyframes auth-spin { to { transform: rotate(360deg); } }

/* ── Links ── */
.auth-links {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.auth-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.auth-links a:hover { color: var(--accent); }

/* ── Onboarding specific ── */
.onboarding-wrapper {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  overflow-x: hidden;
  background: var(--bg-deep);
  font-family: var(--font);
}

.onboarding-brand {
  flex: 0 0 46%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  position: relative;
  background:
    radial-gradient(ellipse 80% 60% at 50% 45%, rgba(212,168,67,0.06) 0%, transparent 55%),
    radial-gradient(ellipse 40% 70% at 25% 80%, rgba(212,168,67,0.04) 0%, transparent 50%),
    var(--bg-panel);
  border-right: 1px solid var(--border);
}

.onboarding-brand::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212,168,67,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212,168,67,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.onboarding-brand-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 360px;
}

.onboarding-form-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: var(--bg-form);
}

.onboarding-form-card {
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.onboarding-form-card h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
  letter-spacing: -0.03em;
}

.onboarding-form-card .onboarding-subtitle {
  color: var(--text-muted);
  font-size: 0.84rem;
  margin-bottom: 1.75rem;
}

.onboarding-field { margin-bottom: 1.1rem; }

.onboarding-field label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.onboarding-field input {
  width: 100%;
  padding: 0.75rem 0.9rem;
  font-size: 0.92rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  font-family: var(--font);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.onboarding-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.08);
}

.onboarding-field input::placeholder { color: #3a3a3a; }

.subdomain-feedback {
  font-size: 0.72rem;
  margin-top: 0.3rem;
  min-height: 1.2em;
}
.subdomain-feedback.ok { color: var(--success); }
.subdomain-feedback.erro { color: var(--danger); }

.onboarding-submit {
  width: 100%;
  padding: 0.82rem;
  font-size: 0.92rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #b89230, #d4a843, #b89230);
  color: #050505;
  cursor: pointer;
  transition: opacity var(--transition), transform 0.15s, box-shadow var(--transition);
  margin-top: 0.5rem;
  min-height: 50px;
  font-family: var(--font);
  letter-spacing: 0.02em;
}

.onboarding-submit:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(212,168,67,0.18);
}

.onboarding-submit:active { transform: translateY(0); }

.onboarding-submit:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.onboarding-link {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.8rem;
}

.onboarding-link a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.onboarding-link a:hover { color: var(--accent); }

/* ═════════════════════════════════════════════════════════
   RESPONSIVE
   ═════════════════════════════════════════════════════════ */

/* Mobile (< 768px) */
@media (max-width: 767.98px) {
  .auth-wrapper,
  .onboarding-wrapper {
    flex-direction: column;
  }

  .auth-brand-panel,
  .onboarding-brand {
    flex: 0 0 auto;
    padding: 2rem 1.5rem 1.5rem;
    border-right: none;
    border-bottom: 1px solid var(--border);
    min-height: auto;
  }

  .auth-brand-panel::after { display: none; }

  .auth-brand-logo {
    max-width: 180px;
    margin-bottom: 1rem;
  }

  .auth-brand-name { font-size: 0.62rem; }
  .auth-brand-subtitle { font-size: 0.76rem; }
  .auth-brand-divider { margin: 0.75rem auto; }

  .auth-form-panel,
  .onboarding-form-panel {
    padding: 1.5rem 1.25rem 2rem;
    flex: 1;
    align-items: flex-start;
    padding-top: 2rem;
  }

  .auth-form-title,
  .onboarding-form-card h1 {
    font-size: 1.35rem;
    text-align: center;
  }

  .auth-form-subtitle,
  .onboarding-form-card .onboarding-subtitle {
    text-align: center;
  }

  .auth-form-header { margin-bottom: 1.5rem; }
  .auth-form-card,
  .onboarding-form-card { max-width: none; }
}

/* Small mobile (< 375px) */
@media (max-width: 374.98px) {
  .auth-brand-panel,
  .onboarding-brand {
    padding: 1.5rem 1rem 1rem;
  }

  .auth-brand-logo { max-width: 150px; margin-bottom: 0.75rem; }

  .auth-form-panel,
  .onboarding-form-panel {
    padding: 1.25rem 1rem 1.5rem;
  }

  .auth-form-title,
  .onboarding-form-card h1 { font-size: 1.2rem; }

  .auth-input,
  .auth-select,
  .onboarding-field input {
    padding: 0.65rem 0.75rem;
    font-size: 0.87rem;
  }

  .auth-submit,
  .onboarding-submit {
    padding: 0.7rem;
    font-size: 0.87rem;
    min-height: 46px;
  }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  .auth-submit,
  .onboarding-submit,
  .auth-input,
  .auth-select,
  .onboarding-field input,
  .auth-submit .spinner {
    transition: none;
    animation: none;
  }
  .auth-submit:hover,
  .onboarding-submit:hover { transform: none; }
}