@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Material Design 2 Dark Theme */
  --bg-primary: #121212;      
  --bg-secondary: #1E1E1E;    
  --text-primary: rgba(255, 255, 255, 0.87);    
  --text-secondary: rgba(255, 255, 255, 0.60);  
  --accent-color: #BB86FC;    
  --accent-hover: #A670E0;
  --danger-color: #CF6679;    
  --success-color: #03DAC6;
  
  --glass-bg: rgba(30, 30, 30, 0.8);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  --input-bg: rgba(255, 255, 255, 0.05);
  
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --logo-filter: invert(1) brightness(2);
  --logo-blend: normal;
  --btn-text-color: #121212;
}

:root[data-theme="light"] {
  /* Material Design 2 Light Theme */
  --bg-primary: #F5F5F5;
  --bg-secondary: #FFFFFF;
  --text-primary: rgba(0, 0, 0, 0.87);
  --text-secondary: rgba(0, 0, 0, 0.60);
  --accent-color: #6200EE;
  --accent-hover: #3700B3;
  --danger-color: #B00020;    
  --success-color: #018786;
  
  --glass-bg: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(0, 0, 0, 0.12);
  --glass-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --input-bg: rgba(0, 0, 0, 0.04);
  --logo-filter: none;
  --logo-blend: normal;
  --btn-text-color: #FFFFFF;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

/* Glassmorphism utility */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: 2rem;
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Forms & Inputs */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.input-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-smooth);
}

.input-field {
  width: 100%;
  padding: 0.875rem 1rem;
  background-color: var(--input-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: background-color var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-smooth);
}

.input-field:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(187, 134, 252, 0.2);
}

select.input-field option {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.875rem 1.5rem;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

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

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(187, 134, 252, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Utilities */
.text-center { text-align: center; }
.mt-4 { margin-top: 1rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-6 { margin-bottom: 1.5rem; }

.error-message {
  color: var(--danger-color);
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: none;
  background-color: rgba(239, 68, 68, 0.1);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.error-message.show { display: block; }

/* Theme Toggle Button */
.theme-toggle {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
  z-index: 1000;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: var(--glass-shadow);
}

/* Native Accordion */
details.accordion > summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0;
  cursor: pointer;
  outline: none;
  font-weight: 700;
  color: var(--text-primary);
}
details.accordion > summary::-webkit-details-marker {
  display: none;
}
.accordion-icon {
  transition: transform var(--transition-smooth);
  font-size: 1rem;
  color: var(--text-secondary);
}
details.accordion[open] .accordion-icon {
  transform: rotate(180deg);
}
details.accordion[open] > summary {
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1rem;
}

.company-logo {
  height: 68px;
  object-fit: contain;
  filter: var(--logo-filter);
  transition: filter var(--transition-smooth), transform var(--transition-smooth);
}

.nav-locked {
    opacity: 0.3;
    pointer-events: none;
    filter: grayscale(1);
    cursor: not-allowed;
}

@keyframes pulse-border {
    0% { box-shadow: 0 0 0 0 rgba(187, 134, 252, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(187, 134, 252, 0); }
    100% { box-shadow: 0 0 0 0 rgba(187, 134, 252, 0); }
}

.pro-banner-pulse {
    animation: pulse-border 2.5s infinite;
    border: 1px solid rgba(187, 134, 252, 0.6) !important;
}

.order-slide-out {
    opacity: 0;
    transform: translateX(50px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}