:root {
  --ua-blue: #14a3fb;
  --ua-dark: #1a3a5c;
  --ua-cyan: #00c8da;
  --ua-light: #f6f8fa;
  --ua-text: #384858;
  --ua-gradient: linear-gradient(135deg, #1a3a5c 0%, #2c5282 100%);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

html {
  font-size: 14px;
  background: linear-gradient(135deg, #f6f8fa 0%, #e9ecef 100%);
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

html, body {
  height: 100%;
  color: var(--ua-text);
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Navbar */
.navbar {
  min-height: 80px;
  background: var(--ua-gradient) !important;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
}

.navbar.has-background-grey-dark {
  background: var(--ua-gradient) !important;
}

.navbar-brand-text {
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* Buttons */
.button {
  transition: all var(--transition-normal);
  border-radius: 8px;
  font-weight: 500;
  letter-spacing: 0.2px;
}

.button.is-primary {
  background: linear-gradient(135deg, var(--ua-blue) 0%, #0d8dd6 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px rgba(20, 163, 251, 0.3);
}

.button.is-primary:hover {
  background: linear-gradient(135deg, #0d8dd6 0%, #0a7bc0 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(20, 163, 251, 0.4);
}

.button.is-dark {
  background-color: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  backdrop-filter: blur(4px);
}

.button.is-dark:hover {
  background-color: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.4);
  transform: translateY(-1px);
}

.button.is-info.is-outlined {
  background-color: #fff;
  border: 2px solid var(--ua-dark);
  color: var(--ua-dark);
  border-radius: 10px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.button.is-info.is-outlined:hover {
  background: linear-gradient(135deg, var(--ua-blue) 0%, var(--ua-cyan) 100%);
  border-color: transparent;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(20, 163, 251, 0.35);
}

/* Login provider buttons */
.login-provider-btn {
  background: #fff;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  padding: 1rem 1.5rem;
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.login-provider-btn:hover {
  border-color: var(--ua-blue);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.login-provider-btn.google-btn:hover {
  border-color: #DB4437;
  box-shadow: 0 8px 25px rgba(219, 68, 55, 0.2);
}

.login-provider-btn.microsoft-btn:hover {
  border-color: #00a4ef;
  box-shadow: 0 8px 25px rgba(0, 164, 239, 0.2);
}

/* Cards & Boxes */
.box, .card {
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0,0,0,0.04);
  background: #fff;
}

.login-box {
  border-top: none;
  position: relative;
  overflow: hidden;
}

.login-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ua-blue), var(--ua-cyan), var(--ua-blue));
  background-size: 200% 100%;
  animation: shimmer 3s ease infinite;
}

@keyframes shimmer {
  0%, 100% { background-position: 200% 0; }
  50% { background-position: 0 0; }
}

/* Site/Workspace cards */
.site-card-button {
  height: 100%;
  min-height: 160px;
  padding: 2rem;
  white-space: normal;
  text-align: center;
  border-radius: 16px !important;
  border: 2px solid #f0f2f5 !important;
  background: #fff;
  transition: all var(--transition-normal);
}

.site-card-button:hover {
  border-color: var(--ua-blue) !important;
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(20, 163, 251, 0.2);
}

.site-card-button:hover .icon {
  transform: scale(1.15);
}

.site-card-button .icon {
  transition: transform var(--transition-normal);
}

.site-card-button:active {
  transform: translateY(-2px);
}

/* Typography */
.title {
  color: var(--ua-dark);
  font-weight: 700;
  letter-spacing: -0.5px;
}

.subtitle {
  color: #6f7b86;
  font-weight: 400;
}

/* Language selector */
.language-dropdown {
  position: relative;
}

.language-btn {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  color: #fff;
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.language-btn:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.35);
}

.language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  min-width: 180px;
  padding: 0.5rem;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
}

.language-dropdown:hover .language-menu,
.language-dropdown:focus-within .language-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-menu a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--ua-text);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  transition: background var(--transition-fast);
}

.language-menu a:hover {
  background: var(--ua-light);
}

.language-menu a.active {
  background: linear-gradient(135deg, rgba(20, 163, 251, 0.1) 0%, rgba(0, 200, 218, 0.1) 100%);
  color: var(--ua-blue);
}

.flag-icon {
  width: 20px;
  height: 15px;
  border-radius: 2px;
  object-fit: cover;
}

/* Hero section */
.hero.is-fullheight-with-navbar {
  background: transparent;
}

.hero-body {
  padding-top: 2rem;
}

/* Footer */
.hero-foot {
  background: #fff;
  color: #6f7b86;
  border-top: 1px solid #e5e7eb;
  font-size: 0.875rem;
  padding: 1.5rem !important;
}

/* Welcome section styling */
.welcome-section {
  text-align: center;
  margin-bottom: 2rem;
}

.welcome-icon {
  width: 64px;
  height: 64px;
  background: var(--ua-dark);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 24px rgba(26, 58, 92, 0.3);
}

.welcome-icon i {
  font-size: 1.75rem;
  color: #fff;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .navbar {
    min-height: 64px;
  }

  .site-card-button {
    min-height: 120px;
    padding: 1.5rem;
  }

  .login-box {
    margin: 1rem;
  }
}

/* Focus states for accessibility */
.button:focus,
.language-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(20, 163, 251, 0.3);
}

/* Loading state for buttons */
.button.is-loading::after {
  border-color: transparent transparent currentColor currentColor !important;
}