/* ==========================================================================
   AUTH.CSS — Shared Design System for all Authentication Pages
   Pages: unified-login, register, verify-email, partner-login, affiliate-register
   ========================================================================== */

/* ---------- Design Tokens (Light Mode) ---------- */
:root {
  --white: #ffffff;
  --accent: #00c2d1;
  --accent-hover: #00a8b5;
  --accent-light: rgba(0, 194, 209, 0.1);
  --dark: #2f3e46;
  --dark-light: #354f52;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #717a85;
  --gray-500: #5c6370;
  --gray-600: #4b5563;
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --purple: #8b5cf6;
  --purple-bg: rgba(139, 92, 246, 0.1);
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 2px 4px rgba(0,0,0,0.03), 0 4px 8px rgba(0,0,0,0.03), 0 8px 16px rgba(0,0,0,0.02), 0 16px 32px rgba(0,0,0,0.02);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* ---------- Dark Mode Tokens ---------- */
[data-theme="dark"] {
  --white: #1e1e2e;
  --dark: #e0e0e0;
  --dark-light: #1a1a2e;
  --gray-50: #2a2a3e;
  --gray-100: #252538;
  --gray-200: #3a3a50;
  --gray-300: #4a4a60;
  --gray-400: #8a8aa0;
  --gray-500: #a0a0b8;
  --gray-600: #c0c0d0;
  --error-bg: rgba(239, 68, 68, 0.15);
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning-bg: rgba(245, 158, 11, 0.15);
  --purple-bg: rgba(139, 92, 246, 0.15);
  --shadow-card: 0 2px 4px rgba(0,0,0,0.2), 0 4px 8px rgba(0,0,0,0.15), 0 8px 16px rgba(0,0,0,0.1), 0 16px 32px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

/* ---------- Body / Page Background ---------- */
body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 50%, #f0f4f8 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  color: var(--dark);
}

[data-theme="dark"] body {
  background: linear-gradient(135deg, #0a0e14 0%, #141c28 50%, #0a0e14 100%);
}

/* ---------- Auth Card ---------- */
.auth-card {
  background: #ffffff;
  border: 1px solid var(--gray-200);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  width: 100%;
  animation: authFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] .auth-card {
  background: #1a1f2e;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ---------- Logo ---------- */
.auth-logo {
  width: clamp(220px, 25vw + 120px, 320px);
  margin: 0 auto 16px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 12px 16px;
}

.auth-logo img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

[data-theme="dark"] .auth-logo {
  background: rgba(255, 255, 255, 0.06);
}

.logo-section {
  text-align: center;
  margin-bottom: 28px;
}

.logo-section h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.logo-section h1 span { color: var(--accent); }

.logo-section p {
  color: var(--gray-500);
  font-size: 14px;
}

[data-theme="dark"] .logo-section h1 {
  color: #e2e8f0;
}

/* ---------- Alerts ---------- */
.alert {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 14px;
  font-weight: 500;
  display: none;
  align-items: center;
  gap: 12px;
}

.alert.show { display: flex; }
.alert-error, .alert.error { background: var(--error-bg); color: var(--error); border: 1px solid rgba(239, 68, 68, 0.2); }
.alert-success, .alert.success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.2); }
.alert-warning, .alert.warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.2); }

/* ---------- Form Elements ---------- */
.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}

.form-label .optional {
  font-weight: 400;
  color: var(--gray-400);
}

[data-theme="dark"] .form-label {
  color: var(--gray-500);
}

.input-wrapper { position: relative; }

.form-input,
.form-select {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px;
  font-family: inherit;
  color: var(--dark);
  background: var(--white);
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.form-input:hover,
.form-select:hover { border-color: var(--gray-400); }

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-input::placeholder { color: var(--gray-400); }

.form-input.error { border-color: var(--error); background: var(--error-bg); }
.form-input.error:focus { box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15); }
.form-input.valid { border-color: var(--success); }

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select {
  background: var(--gray-50);
  border-color: var(--gray-300);
  color: var(--dark);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus {
  border-color: var(--accent);
  background: var(--gray-100);
}

[data-theme="dark"] .form-input::placeholder { color: var(--gray-400); }
[data-theme="dark"] .form-input.error { background: rgba(239, 68, 68, 0.1); }

.field-error {
  color: var(--error);
  font-size: 12px;
  margin-top: 4px;
  display: none;
}
.field-error.visible { display: block; }

.password-toggle {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: 4px;
  font-size: 18px;
}

.password-toggle:hover { color: var(--gray-600); }

[data-theme="dark"] .password-toggle { color: var(--gray-400); }
[data-theme="dark"] .password-toggle:hover { color: var(--gray-500); }

/* ---------- Buttons ---------- */
.btn {
  width: 100%;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 194, 209, 0.25);
}

.btn-primary:active:not(:disabled) { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-secondary {
  width: 100%;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
  background: var(--white);
  color: var(--dark);
  margin-top: 12px;
}

.btn-secondary:hover { background: var(--gray-50); }

[data-theme="dark"] .btn-secondary {
  background: var(--gray-50);
  border-color: var(--gray-300);
  color: var(--dark);
}

[data-theme="dark"] .btn-secondary:hover { background: var(--gray-100); }

.btn-loading { position: relative; color: transparent !important; pointer-events: none; }
.btn-loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin: -10px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: authSpin 0.8s linear infinite;
}

.btn .spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: authSpin 0.8s linear infinite;
}

/* ---------- Security Note ---------- */
.security-note {
  margin-top: 32px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
}

.security-note p {
  font-size: 12px;
  color: var(--gray-500);
  line-height: 1.6;
}

.security-note strong { color: var(--dark); }

[data-theme="dark"] .security-note { border-color: var(--gray-300); }

/* ---------- Footer Links ---------- */
.footer-link,
.register-link,
.back-link-section {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--gray-500);
}

.footer-link a,
.register-link a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.footer-link a:hover,
.register-link a:hover { text-decoration: underline; }

.back-link {
  display: block;
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--gray-400);
  text-decoration: none;
}

.back-link:hover { color: var(--gray-500); }

[data-theme="dark"] .footer-link,
[data-theme="dark"] .register-link {
  border-top-color: var(--gray-300);
}

/* ---------- Strength Bar ---------- */
.strength-bar {
  height: 4px;
  background: var(--gray-200);
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  width: 0;
  border-radius: 2px;
  transition: all 0.3s;
}

.strength-fill.weak { width: 33%; background: var(--error); }
.strength-fill.medium { width: 66%; background: var(--warning); }
.strength-fill.strong { width: 100%; background: var(--success); }

.strength-text {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ---------- Theme Toggle ---------- */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--gray-300);
  background: var(--white);
  color: var(--dark);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  z-index: 100;
}

.theme-toggle:hover { background: var(--gray-50); transform: scale(1.1); }

[data-theme="dark"] .theme-toggle {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #e0e0e0;
}

[data-theme="dark"] .theme-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ---------- Theme Transition ---------- */
html.theme-transitioning, html.theme-transitioning * {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease !important;
}

/* ---------- Animations ---------- */
@keyframes authFadeIn {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes authCheckPop {
  from { transform: scale(0); }
  to { transform: scale(1); }
}

@keyframes authSpin {
  to { transform: rotate(360deg); }
}

/* ---------- Accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  .auth-card,
  .status-icon.success-pop,
  .btn-loading::after,
  .btn .spinner,
  .loading-spinner { animation: none !important; }
}

/* ---------- Mobile ---------- */
@media (max-width: 480px) {
  body { padding: 16px; }
  .auth-card { padding: 32px 24px; }
  .auth-logo { width: 180px; }
  .logo-section h1 { font-size: 22px; }
}

/* ---------- Utilities ---------- */
.hidden { display: none !important; }
.grecaptcha-badge { visibility: hidden !important; }