/* =============================================================
   URBot.net — Login / Sign Up / Forgot Password Page Styles
   Brand: dark #1a1a2e, orange #FF6B35, green #10b981
   ============================================================= */

/* ---- Reset & base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --brand-orange: #FF6B35;
  --brand-orange-dark: #e55a28;
  --brand-orange-glow: rgba(255, 107, 53, 0.15);
  --brand-orange-glow-focus: rgba(255, 107, 53, 0.2);
  --brand-green: #10b981;
  --bg-deep: #1a1a2e;
  --bg-mid: #16213e;
  --bg-dark: #0f3460;
  --text-dark: #1e293b;
  --text-mid: #374151;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border-light: #e2e8f0;
  --border-focus: #FF6B35;
  --card-bg: #ffffff;
  --card-shadow: 0 25px 60px rgba(0, 0, 0, 0.35), 0 10px 20px rgba(0, 0, 0, 0.2);
  --font: 'Segoe UI', Roboto, Arial, sans-serif;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --transition: 0.18s ease;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: linear-gradient(135deg, var(--bg-deep) 0%, var(--bg-mid) 50%, var(--bg-dark) 100%);
  min-height: 100vh;
  color: var(--text-dark);
  -webkit-font-smoothing: antialiased;
}

/* ---- Navigation ---- */
.login-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 2rem;
  background: rgba(26, 26, 46, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.login-nav .logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  transition: opacity var(--transition);
}

.login-nav .logo:hover {
  opacity: 0.85;
}

.login-nav .logo img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(255, 107, 53, 0.3));
}

.login-nav .back-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-sm);
}

.login-nav .back-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
}

.login-nav .back-link svg {
  flex-shrink: 0;
}

/* ---- Main layout ---- */
.login-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 5.5rem 1rem 2.5rem;
}

/* ---- Card ---- */
.login-card {
  background: var(--card-bg);
  border-radius: var(--radius-2xl);
  padding: 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--card-shadow);
  position: relative;
  /* Subtle orange top accent line */
  border-top: 3px solid var(--brand-orange);
}

/* ---- Tabs ---- */
.login-tabs {
  display: flex;
  gap: 0.15rem;
  border-bottom: 2px solid #f1f5f9;
  margin-bottom: 1.75rem;
}

.tab-btn {
  flex: 1;
  padding: 0.625rem 0.5rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2.5px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tab-btn:hover:not(.active) {
  color: var(--text-mid);
  background: rgba(255, 107, 53, 0.04);
}

.tab-btn.active {
  color: var(--brand-orange);
  border-bottom-color: var(--brand-orange);
  font-weight: 600;
}

/* ---- Forms ---- */
.login-form {
  display: none;
  flex-direction: column;
  gap: 1.1rem;
}

.login-form.active {
  display: flex;
}

.form-intro {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 0.25rem;
}

/* ---- Form groups ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.form-group label {
  display: block;
  font-size: 0.8375rem;
  font-weight: 600;
  color: var(--text-mid);
  margin-bottom: 0.35rem;
  letter-spacing: 0.01em;
}

.label-optional {
  font-weight: 400;
  color: var(--text-light);
  font-size: 0.8rem;
}

/* ---- Inputs ---- */
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font);
  color: var(--text-dark);
  background: #ffffff;
  outline: none;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder {
  color: #c4cdd6;
}

.form-input:hover:not(:focus) {
  border-color: #c4d0e8;
}

.form-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--brand-orange-glow);
}

.form-input.input-error {
  border-color: #f87171;
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}

/* ---- Password field with toggle ---- */
.password-wrap {
  position: relative;
}

.password-wrap .form-input {
  padding-right: 2.85rem;
}

.password-toggle {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition), background var(--transition);
  line-height: 0;
}

.password-toggle:hover {
  color: var(--brand-orange);
  background: var(--brand-orange-glow);
}

.password-toggle:focus-visible {
  outline: 2px solid var(--brand-orange);
  outline-offset: 1px;
}

/* Eye-slash icon (hidden by default, shown when password is visible) */
.eye-slash-icon {
  display: none;
}

.password-toggle.showing .eye-icon {
  display: none;
}

.password-toggle.showing .eye-slash-icon {
  display: block;
}

/* ---- Submit button ---- */
.login-btn {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--brand-orange);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font);
  font-weight: 700;
  cursor: pointer;
  transition:
    background var(--transition),
    transform var(--transition),
    box-shadow var(--transition),
    opacity var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  letter-spacing: 0.01em;
  margin-top: 0.25rem;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.login-btn:hover:not(:disabled) {
  background: var(--brand-orange-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(255, 107, 53, 0.4);
}

.login-btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.25);
}

.login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.login-btn:focus-visible {
  outline: 2px solid var(--brand-orange);
  outline-offset: 2px;
}

/* Button spinner */
.btn-spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.35);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  flex-shrink: 0;
}

.login-btn.loading .btn-text {
  opacity: 0.7;
}

.login-btn.loading .btn-spinner {
  display: block;
}

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

/* ---- Nav links inside forms ---- */
.login-link {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

.login-link a {
  color: var(--brand-orange);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition);
}

.login-link a:hover {
  color: var(--brand-orange-dark);
  text-decoration: underline;
}

/* ---- Avatar picker ---- */
.avatar-picker {
  margin-top: 0.2rem;
}

.avatar-picker-label {
  font-size: 0.8375rem;
  font-weight: 600;
  color: var(--text-mid);
  margin-bottom: 0.6rem;
  letter-spacing: 0.01em;
}

.avatar-row {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) transparent;
  /* Fade edges to hint scrollability */
  mask-image: linear-gradient(to right, transparent 0, black 0.75rem, black calc(100% - 0.75rem), transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0, black 0.75rem, black calc(100% - 0.75rem), transparent 100%);
  padding-left: 0.5rem;
  padding-right: 0.5rem;
  margin-left: -0.5rem;
  margin-right: -0.5rem;
}

.avatar-row::-webkit-scrollbar {
  height: 3px;
}

.avatar-row::-webkit-scrollbar-track {
  background: transparent;
}

.avatar-row::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 99px;
}

.avatar-opt {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--border-light);
  cursor: pointer;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  overflow: hidden;
  flex-shrink: 0;
  padding: 4px;
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Reset button styles */
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.avatar-opt:hover {
  border-color: var(--brand-orange);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.2);
}

.avatar-opt.selected {
  border-color: var(--brand-orange);
  box-shadow: 0 0 0 3px var(--brand-orange-glow-focus);
  background: #fff8f5;
}

.avatar-opt:focus-visible {
  border-color: var(--brand-orange);
  box-shadow: 0 0 0 3px var(--brand-orange-glow);
}

.avatar-opt img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  display: block;
}

/* ---- Message / alert area ---- */
.login-message {
  margin-top: 1rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  text-align: center;
  display: none;
  line-height: 1.5;
  font-weight: 500;
}

.login-message.error {
  display: block;
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

.login-message.success {
  display: block;
  background: #f0fdf4;
  color: #16a34a;
  border: 1px solid #bbf7d0;
}

.login-message.info {
  display: block;
  background: #eff6ff;
  color: #2563eb;
  border: 1px solid #bfdbfe;
}

.login-message.warning {
  display: block;
  background: #fffbeb;
  color: #d97706;
  border: 1px solid #fde68a;
}

/* ---- Decorative background elements ---- */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.06) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  bottom: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
  .login-nav {
    padding: 0.75rem 1.25rem;
  }

  .login-nav .logo img {
    width: 38px;
    height: 38px;
  }

  .login-nav .logo span {
    font-size: 1rem;
  }

  .login-main {
    padding: 5rem 0.75rem 2rem;
    align-items: flex-start;
  }

  .login-card {
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3), 0 5px 12px rgba(0, 0, 0, 0.15);
  }

  .tab-btn {
    font-size: 0.8125rem;
    padding: 0.5rem 0.25rem;
  }

  .login-btn {
    padding: 0.8rem;
    font-size: 0.9375rem;
  }

  .avatar-opt {
    width: 48px;
    height: 48px;
  }
}

@media (max-width: 360px) {
  .login-card {
    padding: 1.25rem;
  }

  .form-input {
    font-size: 0.9375rem;
  }
}

/* ---- Reduce motion ---- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- Focus visible (keyboard nav) ---- */
.form-input:focus-visible {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--brand-orange-glow);
}

a:focus-visible {
  outline: 2px solid var(--brand-orange);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---- Password strength indicator (optional visual) ---- */
.password-strength {
  height: 3px;
  border-radius: 99px;
  background: var(--border-light);
  margin-top: 0.4rem;
  overflow: hidden;
  transition: opacity var(--transition);
}

.password-strength-bar {
  height: 100%;
  border-radius: 99px;
  transition: width 0.3s ease, background 0.3s ease;
  width: 0;
}

.password-strength-bar.weak   { width: 25%; background: #f87171; }
.password-strength-bar.fair   { width: 50%; background: #fb923c; }
.password-strength-bar.good   { width: 75%; background: #facc15; }
.password-strength-bar.strong { width: 100%; background: var(--brand-green); }