:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08); /* Light blue */
  --color-bg-2: rgba(245, 158, 11, 0.08); /* Light yellow */
  --color-bg-3: rgba(34, 197, 94, 0.08); /* Light green */
  --color-bg-4: rgba(239, 68, 68, 0.08); /* Light red */
  --color-bg-5: rgba(147, 51, 234, 0.08); /* Light purple */
  --color-bg-6: rgba(249, 115, 22, 0.08); /* Light orange */
  --color-bg-7: rgba(236, 72, 153, 0.08); /* Light pink */
  --color-bg-8: rgba(6, 182, 212, 0.08); /* Light cyan */

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    /* RGB versions for opacity control (Dark Mode) */
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    /* Background color tokens (Dark Mode) */
    --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
    --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
    --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
    --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
    --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
    --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
    --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
    --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

    /* Semantic Color Tokens (Dark Mode) */
    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --button-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

    /* Common style patterns - updated for dark mode */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* RGB versions for dark mode */
    --color-success-rgb: var(--color-teal-300-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: var(--color-gray-300-rgb);
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  /* RGB versions for opacity control (dark mode) */
  --color-gray-400-rgb: 119, 124, 124;
  --color-teal-300-rgb: 50, 184, 198;
  --color-gray-300-rgb: 167, 169, 169;
  --color-gray-200-rgb: 245, 245, 245;

  /* Colorful background palette - Dark Mode */
  --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
  --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
  --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
  --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
  --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
  --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
  --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
  --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

  /* Semantic Color Tokens (Dark Mode) */
  --color-background: var(--color-charcoal-700);
  --color-surface: var(--color-charcoal-800);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
  --color-primary: var(--color-teal-300);
  --color-primary-hover: var(--color-teal-400);
  --color-primary-active: var(--color-teal-800);
  --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
  --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
  --color-border: rgba(var(--color-gray-400-rgb), 0.3);
  --color-error: var(--color-red-400);
  --color-success: var(--color-teal-300);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-gray-300);
  --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
  --color-btn-primary-text: var(--color-slate-900);
  --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
  --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

  /* Common style patterns - updated for dark mode */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for dark mode */
  --color-success-rgb: var(--color-teal-300-rgb);
  --color-error-rgb: var(--color-red-400-rgb);
  --color-warning-rgb: var(--color-orange-400-rgb);
  --color-info-rgb: var(--color-gray-300-rgb);
}

[data-color-scheme="light"] {
  /* RGB versions for opacity control (light mode) */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);

  /* RGB versions for light mode */
  --color-success-rgb: var(--color-teal-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: var(--color-slate-500-rgb);
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-md);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--color-primary-hover);
}

code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  border: none;
  text-decoration: none;
  position: relative;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

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

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

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

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

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

.btn--secondary:active {
  background: var(--color-secondary-active);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover {
  background: var(--color-secondary);
}

.btn--sm {
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: var(--space-10) var(--space-20);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.btn--full-width {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form elements */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

textarea.form-control {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
}

select.form-control {
  padding: var(--space-8) var(--space-12);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
}

/* Add a dark mode specific caret */
@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

/* Also handle data-color-scheme */
[data-color-scheme="dark"] select.form-control {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
  background-image: var(--select-caret-light);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: var(--focus-outline);
}

.form-label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.form-group {
  margin-bottom: var(--space-16);
}

/* Card component */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__body {
  padding: var(--space-16);
}

.card__header,
.card__footer {
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-card-border-inner);
}

/* Status indicators - simplified with CSS variables */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.status--success {
  background-color: rgba(
    var(--color-success-rgb, 33, 128, 141),
    var(--status-bg-opacity)
  );
  color: var(--color-success);
  border: 1px solid
    rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(
    var(--color-error-rgb, 192, 21, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-error);
  border: 1px solid
    rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(
    var(--color-warning-rgb, 168, 75, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-warning);
  border: 1px solid
    rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(
    var(--color-info-rgb, 98, 108, 113),
    var(--status-bg-opacity)
  );
  color: var(--color-info);
  border: 1px solid
    rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* Container layout */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-16);
  padding-left: var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* Utility classes */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-4 {
  gap: var(--space-4);
}
.gap-8 {
  gap: var(--space-8);
}
.gap-16 {
  gap: var(--space-16);
}

.m-0 {
  margin: 0;
}
.mt-8 {
  margin-top: var(--space-8);
}
.mb-8 {
  margin-bottom: var(--space-8);
}
.mx-8 {
  margin-left: var(--space-8);
  margin-right: var(--space-8);
}
.my-8 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.p-0 {
  padding: 0;
}
.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
.px-8 {
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}
.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}
.px-16 {
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

.block {
  display: block;
}
.hidden {
  display: none;
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Dark mode specifics */
[data-color-scheme="dark"] .btn--outline {
  border: 1px solid var(--color-border-secondary);
}

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2')
    format('woff2');
}

/* END PERPLEXITY DESIGN SYSTEM */
/* Import premium fonts and reset */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* Premium CSS Variables & Color System */
:root {
  /* Premium Color Palette */
  --glass-primary: rgba(255, 255, 255, 0.12);
  --glass-secondary: rgba(255, 255, 255, 0.08);
  --glass-tertiary: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-border-secondary: rgba(255, 255, 255, 0.1);
  
  /* Premium Gradients */
  --gradient-cosmic: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);
  --gradient-aurora: linear-gradient(135deg, #00d4ff 0%, #091a7a 25%, #1e3c72 50%, #2a5298 75%, #00d4ff 100%);
  --gradient-sunset: linear-gradient(135deg, #ff6b9d 0%, #c44569 25%, #f8b500 50%, #feca57 75%, #ff9ff3 100%);
  --gradient-ocean: linear-gradient(135deg, #4facfe 0%, #00f2fe 25%, #43e97b 50%, #38f9d7 75%, #4facfe 100%);
  --gradient-space: linear-gradient(135deg, #1a1a2e 0%, #16213e 25%, #0f3460 50%, #533483 75%, #1a1a2e 100%);
  
  /* Element Type Gradients */
  --gradient-s-block: linear-gradient(135deg, #ff6b9d 0%, #ff8fab 50%, #ffb3c1 100%);
  --gradient-p-block: linear-gradient(135deg, #4facfe 0%, #00f2fe 50%, #43e97b 100%);
  --gradient-d-block: linear-gradient(135deg, #feca57 0%, #ff9ff3 50%, #f093fb 100%);
  --gradient-f-block: linear-gradient(135deg, #43e97b 0%, #38f9d7 50%, #4facfe 100%);
  
  /* Phase Gradients */
  --gradient-solid: linear-gradient(135deg, #8b4513 0%, #cd853f 50%, #daa520 100%);
  --gradient-liquid: linear-gradient(135deg, #1e90ff 0%, #00bfff 50%, #87ceeb 100%);
  --gradient-gas: linear-gradient(135deg, #ff6347 0%, #ff7f50 50%, #ffa07a 100%);
  
  /* Category Gradients */
  --gradient-alkali: linear-gradient(135deg, #ff6b9d 0%, #ff8fab 50%, #ffb3c1 100%);
  --gradient-alkaline: linear-gradient(135deg, #ff9a8b 0%, #ffa07a 50%, #ffb6c1 100%);
  --gradient-transition: linear-gradient(135deg, #ffd93d 0%, #ffcd3c 50%, #ffc107 100%);
  --gradient-post-transition: linear-gradient(135deg, #87ceeb 0%, #98fb98 50%, #afeeee 100%);
  --gradient-metalloid: linear-gradient(135deg, #dda0dd 0%, #d8bfd8 50%, #e6e6fa 100%);
  --gradient-nonmetal: linear-gradient(135deg, #4ecdc4 0%, #44a08d 50%, #3cb371 100%);
  --gradient-halogen: linear-gradient(135deg, #ff69b4 0%, #ff1493 50%, #dc143c 100%);
  --gradient-noble: linear-gradient(135deg, #9370db 0%, #8a2be2 50%, #9932cc 100%);
  --gradient-lanthanide: linear-gradient(135deg, #6bcf7f 0%, #4bc0c8 50%, #00d4aa 100%);
  --gradient-actinide: linear-gradient(135deg, #32cd32 0%, #00ced1 50%, #20b2aa 100%);
  
  /* Search Highlight */
  --gradient-search: linear-gradient(135deg, #ff6b35 0%, #f7931e 50%, #ffb347 100%);
  
  /* Premium Shadows & Effects */
  --shadow-glass: 0 8px 32px rgba(31, 38, 135, 0.37);
  --shadow-glass-hover: 0 15px 35px rgba(31, 38, 135, 0.4);
  --shadow-glow: 0 0 20px rgba(255, 255, 255, 0.1);
  --shadow-glow-colored: 0 0 30px rgba(79, 172, 254, 0.3);
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.2);
  
  /* Advanced Blur Effects */
  --blur-glass: blur(20px);
  --blur-glass-strong: blur(40px);
  --blur-backdrop: blur(12px);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Animations */
  --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 600ms;
}

/* Advanced Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-primary);
  background: #0f0f23;
  color: white;
  overflow-x: hidden;
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background & Atmospheric Effects */
.background-gradient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-space);
  z-index: -2;
}

.background-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(79, 172, 254, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 107, 157, 0.1) 0%, transparent 50%);
  animation: backgroundShift 20s ease-in-out infinite alternate;
}

/* Floating Orbs Animation */
.floating-orbs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
  animation: float 6s ease-in-out infinite;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(79, 172, 254, 0.1) 0%, transparent 70%);
  top: 10%;
  right: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.08) 0%, transparent 70%);
  bottom: 20%;
  left: 15%;
  animation-delay: 2s;
}

.orb-3 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(67, 233, 123, 0.06) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 4s;
}

/* Main App Container */
.app-container {
  position: relative;
  width: 100%;
  min-height: 100vh;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Premium Glass Header */
.glass-header {
  background: var(--glass-primary);
  backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-glass);
  position: relative;
  overflow: hidden;
}

.glass-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  position: relative;
  z-index: 1;
}

.title-section {
  flex: 1;
}

.main-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.title-quantum {
  background: var(--gradient-cosmic);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.title-periodic {
  color: rgba(255, 255, 255, 0.9);
  display: block;
  font-weight: 600;
}

.subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 400;
}

/* Controls Section */
.controls-section {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

/* Premium Search Input */
.search-glass-container {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 1rem;
  color: rgba(255, 255, 255, 0.6);
  z-index: 2;
  pointer-events: none;
}

.glass-search {
  background: var(--glass-secondary);
  backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--glass-border-secondary);
  border-radius: 50px;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  font-size: 0.95rem;
  color: white;
  width: 280px;
  transition: all var(--duration-normal) var(--ease-premium);
  box-shadow: var(--shadow-inset);
}

.glass-search::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.glass-search:focus {
  outline: none;
  border-color: rgba(79, 172, 254, 0.6);
  box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.2), var(--shadow-glow-colored);
  transform: translateY(-1px);
}

/* Glass Buttons */
.view-controls-glass {
  display: flex;
  gap: 0.5rem;
}

.glass-btn {
  background: var(--glass-secondary);
  backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--glass-border-secondary);
  border-radius: 16px;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-premium);
  position: relative;
  overflow: hidden;
}

.glass-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--duration-slow) var(--ease-premium);
}

.glass-btn:hover::before {
  left: 100%;
}

.glass-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glass-hover);
  border-color: rgba(255, 255, 255, 0.3);
}

.glass-btn--primary.active {
  background: linear-gradient(135deg, rgba(79, 172, 254, 0.3), rgba(79, 172, 254, 0.1));
  border-color: rgba(79, 172, 254, 0.6);
  color: white;
  box-shadow: 0 0 20px rgba(79, 172, 254, 0.3);
}

/* Main Content Glass Container */
.main-glass-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  flex: 1;
}

/* Periodic Table Glass Container */
.periodic-glass-container {
  background: var(--glass-primary);
  backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-glass);
  position: relative;
  overflow: hidden;
}

.periodic-glass-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.table-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
}

.table-stats {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

.stat-divider {
  color: rgba(255, 255, 255, 0.3);
}

/* Glass Periodic Table */
.glass-periodic-table {
  display: grid;
  grid-template-columns: repeat(18, 1fr);
  gap: 4px;
  width: 100%;
  aspect-ratio: 18/10;
}

/* Premium Element Cards */
.element {
  background: var(--glass-secondary);
  backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--glass-border-secondary);
  border-radius: 12px;
  padding: 0.5rem 0.25rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-premium);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 60px;
  overflow: hidden;
  transform: translateZ(0);
}

.element::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.element:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: var(--shadow-glass-hover), var(--shadow-glow);
  border-color: rgba(255, 255, 255, 0.4);
  z-index: 10;
}

.element-number {
  font-size: 0.7rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-mono);
  margin-bottom: 2px;
}

.element-symbol {
  font-size: clamp(0.9rem, 1.2vw, 1.3rem);
  font-weight: 700;
  color: white;
  margin-bottom: 2px;
  line-height: 1;
}

.element-name {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Element Type Styles */
.element.s-block { background: linear-gradient(135deg, var(--glass-secondary), rgba(255, 107, 157, 0.2)); }
.element.p-block { background: linear-gradient(135deg, var(--glass-secondary), rgba(79, 172, 254, 0.2)); }
.element.d-block { background: linear-gradient(135deg, var(--glass-secondary), rgba(254, 202, 87, 0.2)); }
.element.f-block { background: linear-gradient(135deg, var(--glass-secondary), rgba(67, 233, 123, 0.2)); }

.element.solid-phase { background: linear-gradient(135deg, var(--glass-secondary), rgba(205, 133, 63, 0.3)); }
.element.liquid-phase { background: linear-gradient(135deg, var(--glass-secondary), rgba(30, 144, 255, 0.3)); }
.element.gas-phase { background: linear-gradient(135deg, var(--glass-secondary), rgba(255, 99, 71, 0.3)); }

.element.alkali-metal { background: linear-gradient(135deg, var(--glass-secondary), rgba(255, 107, 157, 0.3)); }
.element.alkaline-earth-metal { background: linear-gradient(135deg, var(--glass-secondary), rgba(255, 154, 139, 0.3)); }
.element.transition-metal { background: linear-gradient(135deg, var(--glass-secondary), rgba(255, 217, 61, 0.3)); }
.element.post-transition-metal { background: linear-gradient(135deg, var(--glass-secondary), rgba(135, 206, 235, 0.3)); }
.element.metalloid { background: linear-gradient(135deg, var(--glass-secondary), rgba(221, 160, 221, 0.3)); }
.element.nonmetal { background: linear-gradient(135deg, var(--glass-secondary), rgba(78, 205, 196, 0.3)); }
.element.halogen { background: linear-gradient(135deg, var(--glass-secondary), rgba(255, 105, 180, 0.3)); }
.element.noble-gas { background: linear-gradient(135deg, var(--glass-secondary), rgba(147, 112, 219, 0.3)); }
.element.lanthanide { background: linear-gradient(135deg, var(--glass-secondary), rgba(107, 207, 127, 0.3)); }
.element.actinide { background: linear-gradient(135deg, var(--glass-secondary), rgba(50, 205, 50, 0.3)); }

/* Search Highlighting */
.element.search-highlight {
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.4), rgba(247, 147, 30, 0.4)) !important;
  transform: translateY(-4px) scale(1.1) !important;
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.4), var(--shadow-glow) !important;
  border-color: rgba(255, 107, 53, 0.8) !important;
  z-index: 20 !important;
}

.element.search-dimmed {
  opacity: 0.3 !important;
  transform: scale(0.95) !important;
}

/* Legend Glass Container */
.legend-glass-container {
  background: var(--glass-primary);
  backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow-glass);
}

.legend-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.legend-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
}

.legend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--glass-secondary);
  border: 1px solid var(--glass-border-secondary);
  border-radius: 12px;
  transition: all var(--duration-fast) var(--ease-premium);
}

.legend-item:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.legend-color {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

.legend-color.s-block { background: var(--gradient-s-block); }
.legend-color.p-block { background: var(--gradient-p-block); }
.legend-color.d-block { background: var(--gradient-d-block); }
.legend-color.f-block { background: var(--gradient-f-block); }

.legend-color.solid-phase { background: var(--gradient-solid); }
.legend-color.liquid-phase { background: var(--gradient-liquid); }
.legend-color.gas-phase { background: var(--gradient-gas); }

.legend-color.alkali-metal { background: var(--gradient-alkali); }
.legend-color.alkaline-earth-metal { background: var(--gradient-alkaline); }
.legend-color.transition-metal { background: var(--gradient-transition); }
.legend-color.post-transition-metal { background: var(--gradient-post-transition); }
.legend-color.metalloid { background: var(--gradient-metalloid); }
.legend-color.nonmetal { background: var(--gradient-nonmetal); }
.legend-color.halogen { background: var(--gradient-halogen); }
.legend-color.noble-gas { background: var(--gradient-noble); }
.legend-color.lanthanide { background: var(--gradient-lanthanide); }
.legend-color.actinide { background: var(--gradient-actinide); }

.legend-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

/* Premium Modal */
.glass-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: var(--blur-glass);
}

.glass-modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 15, 35, 0.8);
}

.glass-modal-content {
  background: var(--glass-primary);
  backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: var(--shadow-glass-hover);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow: hidden;
  position: relative;
  z-index: 1;
  animation: modalEnter var(--duration-normal) var(--ease-premium);
}

.modal-glass-header {
  padding: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: linear-gradient(135deg, var(--glass-secondary), var(--glass-tertiary));
}

.modal-element-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.25rem;
}

.modal-element-subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-mono);
}

.glass-close-btn {
  background: var(--glass-secondary);
  border: 1px solid var(--glass-border-secondary);
  border-radius: 12px;
  padding: 0.5rem;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-premium);
}

.glass-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transform: rotate(90deg);
}

.modal-glass-body {
  padding: 2rem;
  overflow-y: auto;
}

.element-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.detail-item {
  background: var(--glass-secondary);
  border: 1px solid var(--glass-border-secondary);
  border-radius: 12px;
  padding: 1rem;
}

.detail-label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.detail-value {
  font-size: 1rem;
  color: white;
  font-weight: 600;
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-20px) rotate(1deg); }
  66% { transform: translateY(-10px) rotate(-1deg); }
}

@keyframes backgroundShift {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

@keyframes modalEnter {
  0% { 
    opacity: 0; 
    transform: scale(0.9) translateY(20px); 
  }
  100% { 
    opacity: 1; 
    transform: scale(1) translateY(0); 
  }
}

/* Responsive Design */
@media (max-width: 1200px) {
  .app-container { padding: 1.5rem; }
  .glass-periodic-table { gap: 3px; }
  .element { min-height: 50px; }
}

@media (max-width: 900px) {
  .header-content {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  
  .controls-section {
    flex-direction: column;
    gap: 1rem;
  }
  
  .glass-search { width: 100%; max-width: 300px; }
  .glass-periodic-table { aspect-ratio: 18/12; gap: 2px; }
  .element { min-height: 45px; padding: 0.25rem; }
  .element-symbol { font-size: clamp(0.8rem, 1vw, 1.1rem); }
}

@media (max-width: 600px) {
  .app-container { padding: 1rem; }
  .glass-header { padding: 1.5rem; border-radius: 16px; }
  .periodic-glass-container { padding: 1rem; border-radius: 16px; }
  .glass-periodic-table { aspect-ratio: 18/14; gap: 1px; }
  .element { 
    min-height: 35px; 
    padding: 0.125rem;
    border-radius: 8px;
  }
  .element-name { display: none; }
  .element-symbol { font-size: 0.75rem; }
  .element-number { font-size: 0.6rem; }
  
  .legend-grid { grid-template-columns: 1fr; }
  .glass-modal-content { width: 95%; border-radius: 16px; }
  .element-detail { grid-template-columns: 1fr; }
}

/* Performance Optimizations */
.element {
  will-change: transform, box-shadow;
}

.glass-btn {
  will-change: transform;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .orb { display: none; }
}