/* Avcros — Auth pages stylesheet
   Design system based on Supabase's aesthetic:
   dark surfaces, single green accent, sharp corners. */

/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */

:root {
  /* Light mode */
  --bg: #fafafa;
  --bg-2: #f5f5f5;
  --surface: #ffffff;
  --surface-2: #f9f9f9;
  --border: #e5e5e5;
  --border-hover: #d4d4d4;

  --text: #171717;
  --text-2: #666666;
  --text-3: #999999;

  --green: #3ecf8e;
  --green-hover: #24b47e;
  --green-tint: rgba(62, 207, 142, 0.10);
  --green-glow: rgba(62, 207, 142, 0.22);

  --red: #ef4444;
  --red-tint: rgba(239, 68, 68, 0.08);
  --amber: #f59e0b;
}

body.dark-theme {
  --bg: #121212;
  --bg-2: #171717;
  --surface: #1c1c1c;
  --surface-2: #222222;
  --border: #2e2e2e;
  --border-hover: #404040;

  --text: #ededed;
  --text-2: #a0a0a0;
  --text-3: #666666;

  --green: #3ecf8e;
  --green-hover: #4fdb9b;
  --green-tint: rgba(62, 207, 142, 0.12);
  --green-glow: rgba(62, 207, 142, 0.28);

  --red: #f87171;
  --red-tint: rgba(248, 113, 113, 0.10);
  --amber: #fbbf24;
}

/* ============================================================
   2. BASE
   ============================================================ */

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.2s ease, color 0.2s ease;
}

*:focus { outline: none; }
*:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* ============================================================
   3. PAGE LAYOUT
   ============================================================ */

.auth-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.auth-header {
  padding: 24px 40px;
  border-bottom: 1px solid var(--border);
}
.auth-brand {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 3px;
  color: var(--text);
  text-decoration: none;
  transition: color 0.15s ease;
}
.auth-brand:hover { color: var(--green); }

.auth-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 40px 36px 32px;
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 8px;
  color: var(--text);
}

.auth-subtitle {
  font-size: 0.9rem;
  color: var(--text-2);
  margin-bottom: 32px;
  line-height: 1.5;
}

/* ============================================================
   4. OAUTH BUTTONS
   ============================================================ */

.auth-oauth-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.auth-oauth-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
  min-height: 42px;
}
.auth-oauth-btn:hover {
  background: var(--surface-2);
  border-color: var(--border-hover);
}
.auth-oauth-btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.auth-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 22px 0 18px;
  color: var(--text-3);
  font-size: 0.68rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 600;
}
.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ============================================================
   5. FORM FIELDS
   ============================================================ */

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.auth-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.1px;
}

.auth-field input,
.auth-input-prefixed input,
.auth-input-with-toggle input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.auth-field input::placeholder,
.auth-input-prefixed input::placeholder,
.auth-input-with-toggle input::placeholder {
  color: var(--text-3);
}

.auth-field input:focus,
.auth-input-prefixed input:focus,
.auth-input-with-toggle input:focus {
  border-color: var(--green);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--green-glow);
}

/* Prefixed input (@username) */
.auth-input-prefixed {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  background: var(--bg);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.auth-input-prefixed:focus-within {
  border-color: var(--green);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--green-glow);
}
.auth-prefix {
  padding: 10px 0 10px 12px;
  color: var(--text-3);
  font-size: 0.92rem;
  font-weight: 500;
  user-select: none;
  flex-shrink: 0;
}
.auth-input-prefixed input {
  border: none;
  background: transparent;
  padding-left: 4px;
  box-shadow: none !important;
}
.auth-input-prefixed input:focus { background: transparent; }

/* Password toggle wrapper */
.auth-input-with-toggle {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}
.auth-input-with-toggle input { padding-right: 44px; }

.auth-password-toggle {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border: none;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease, background 0.15s ease;
  padding: 0;
  font-family: inherit;
}
.auth-password-toggle:hover {
  color: var(--text);
  background: var(--surface-2);
}
.auth-password-toggle svg { width: 16px; height: 16px; display: block; }
.auth-password-toggle .icon-eye-off { display: none; }
.auth-password-toggle.showing .icon-eye { display: none; }
.auth-password-toggle.showing .icon-eye-off { display: block; }

/* Field hints */
.auth-field-hint {
  display: block;
  font-size: 0.72rem;
  line-height: 1.4;
  color: var(--text-3);
  min-height: 1.05em;
  transition: color 0.15s ease;
}
.auth-field-hint.valid { color: var(--green); }
.auth-field-hint.invalid { color: var(--red); }

/* ============================================================
   6. PASSWORD STRENGTH
   ============================================================ */

.auth-strength {
  display: flex;
  gap: 4px;
  margin-top: 4px;
}
.auth-strength-bar {
  flex: 1;
  height: 3px;
  background: var(--border);
  transition: background 0.2s ease;
}
.auth-strength[data-level="1"] .auth-strength-bar:nth-child(1) { background: var(--red); }
.auth-strength[data-level="2"] .auth-strength-bar:nth-child(-n+2) { background: var(--amber); }
.auth-strength[data-level="3"] .auth-strength-bar { background: var(--green); }

.auth-strength-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 6px;
  letter-spacing: 0.3px;
  color: var(--text-3);
  min-height: 1em;
}
.auth-strength-label[data-level="1"] { color: var(--red); }
.auth-strength-label[data-level="2"] { color: var(--amber); }
.auth-strength-label[data-level="3"] { color: var(--green); }

/* ============================================================
   7. REMEMBER / FORGOT
   ============================================================ */

.auth-remember {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: -2px;
}

.auth-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-2);
  cursor: pointer;
  user-select: none;
}
.auth-checkbox input {
  appearance: none;
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  border: 1px solid var(--border-hover);
  background: var(--bg);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.auth-checkbox input:checked {
  background: var(--green);
  border-color: var(--green);
}
.auth-checkbox input:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 4px;
  height: 8px;
  border: solid #0a0a0a;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.auth-checkbox:hover { color: var(--text); }

.auth-forgot-link {
  font-size: 0.8rem;
  color: var(--text-2);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s ease;
}
.auth-forgot-link:hover { color: var(--green); }

/* ============================================================
   8. SUBMIT BUTTON
   ============================================================ */

.auth-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  background: var(--green);
  color: #0a0a0a;
  border: none;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  cursor: pointer;
  transition: background 0.15s ease;
  min-height: 42px;
  margin-top: 4px;
}
.auth-submit:hover:not(:disabled) { background: var(--green-hover); }
.auth-submit:disabled { opacity: 0.55; cursor: wait; }

/* ============================================================
   9. MESSAGES
   ============================================================ */

.auth-message {
  padding: 11px 14px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 0.83rem;
  line-height: 1.5;
  margin-top: 18px;
  color: var(--text);
}
.auth-message.error {
  color: var(--red);
  background: var(--red-tint);
  border-color: var(--red);
}
.auth-message.success {
  color: var(--green);
  background: var(--green-tint);
  border-color: var(--green);
}

/* ============================================================
   10. FOOTER LINKS BELOW FORM
   ============================================================ */

.auth-alt {
  margin-top: 24px;
  font-size: 0.84rem;
  color: var(--text-2);
  text-align: center;
}
.auth-alt a {
  color: var(--green);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.15s ease;
}
.auth-alt a:hover { color: var(--green-hover); }

.auth-terms {
  margin-top: 16px;
  font-size: 0.72rem;
  color: var(--text-3);
  line-height: 1.5;
  text-align: center;
}
.auth-terms a {
  color: var(--text-2);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.15s ease;
}
.auth-terms a:hover { color: var(--green); }

/* ============================================================
   11. RESEND CONFIRMATION
   ============================================================ */

.auth-resend {
  display: none;
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.5;
}
.auth-resend.show { display: block; }
.auth-resend button {
  background: transparent;
  border: none;
  color: var(--green);
  font-family: inherit;
  font-size: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  margin-left: 4px;
  transition: color 0.15s ease;
}
.auth-resend button:hover { color: var(--green-hover); }

/* ============================================================
   12. PAGE FOOTER
   ============================================================ */

.auth-footer {
  padding: 20px 40px;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-3);
  display: flex;
  justify-content: center;
  gap: 24px;
}
.auth-footer a {
  color: var(--text-3);
  text-decoration: none;
  transition: color 0.15s ease;
}
.auth-footer a:hover { color: var(--text); }

/* ============================================================
   13. RESPONSIVE
   ============================================================ */

@media (max-width: 500px) {
  .auth-header { padding: 20px 20px; }
  .auth-main { padding: 40px 16px; }
  .auth-card { padding: 32px 24px 24px; }
  .auth-footer { padding: 16px 20px; }
  .auth-title { font-size: 1.35rem; }
}