:root {
  --color-white: rgba(255, 255, 255, 1); 
  --color-black: rgba(0, 0, 0, 1);
 
  --color-indigo-300: rgba(156, 136, 255, 1); /* #9C88FF - Lighter for dark mode primary hover/gradient */
  --color-indigo-400: rgba(102, 92, 224, 1); /* #665CE0 - Dark mode primary, light mode gradient start */
  --color-indigo-500: rgba(88, 75, 207, 1); /* #584BCF - Light mode primary, light mode gradient end */
  --color-indigo-600: rgba(70, 59, 168, 1); /* #463BA8 - Light mode primary hover/active */

  /* Cool Grays for Light Mode */ 
  --color-light-gray-50: rgba(245, 247, 250, 1); /* #F5F7FA - Background */
  --color-light-gray-100: rgba(255, 255, 255, 1); /* #FFFFFF - Surface */
  --color-light-gray-200: rgba(226, 232, 240, 1); /* #E2E8F0 - Border */
  --color-light-gray-500: rgba(113, 128, 150, 1); /* #718096 - Secondary Text */
  --color-light-gray-700: rgba(45, 55, 72, 1); /* #2D3748 - Text */

  /* Cool Grays for Dark Mode */
  --color-dark-gray-900: rgba(24, 29, 38, 1); /* #181D26 - Background */
  --color-dark-gray-800: rgba(36, 44, 58, 1); /* #242C3A - Surface */
  --color-dark-gray-700: rgba(59, 70, 89, 1); /* #3B4659 - Border */
  --color-dark-gray-400: rgba(129, 140, 153, 1); /* #818C99 - Secondary Text */
  --color-dark-gray-200: rgba(203, 213, 225, 1); /* #CBD5E1 - Text */

  /* Secondary Accent Color (Subtle Rose) */
  --color-rose-300: rgba(251, 182, 206, 1); /* #FBB6CE - Light mode secondary accent */
  --color-rose-400: rgba(244, 114, 182, 1); /* #F472B6 - Dark mode secondary accent */

  --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-indigo-500-rgb: 88, 75, 207;
  --color-light-gray-700-rgb: 45, 55, 72;
  --color-rose-300-rgb: 251, 182, 206;
  --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-light-gray-50);
  --color-surface: var(--color-light-gray-100);
  --color-text: var(--color-light-gray-700);
  --color-text-secondary: var(--color-light-gray-500);
  --color-primary: var(--color-indigo-500);
  --color-primary-hover: var(--color-indigo-600);
  --color-primary-active: var(--color-indigo-600);
  --color-secondary: rgba(var(--color-indigo-500-rgb), 0.08);
  --color-secondary-hover: rgba(var(--color-indigo-500-rgb), 0.15);
  --color-secondary-active: rgba(var(--color-indigo-500-rgb), 0.2);
  --color-border: var(--color-light-gray-200);
  --color-btn-primary-text: var(--color-white);
  --color-card-border: rgba(var(--color-light-gray-700-rgb), 0.08);
  --color-card-border-inner: rgba(var(--color-light-gray-700-rgb), 0.08);
  --color-error: var(--color-red-500);
  --color-success: var(--color-indigo-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-light-gray-500);
  --color-focus-ring: rgba(var(--color-indigo-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-light-gray-700-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='%232D3748' 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: 88, 75, 207;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 113, 128, 150;

  /* 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-indigo-400-rgb: 102, 92, 224;
    --color-indigo-300-rgb: 156, 136, 255;
    --color-dark-gray-200-rgb: 203, 213, 225;
    --color-rose-400-rgb: 244, 114, 182;

    /* 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-dark-gray-900);
    --color-surface: var(--color-dark-gray-800);
    --color-text: var(--color-dark-gray-200);
    --color-text-secondary: var(--color-dark-gray-400);
    --color-primary: var(--color-indigo-400);
    --color-primary-hover: var(--color-indigo-300);
    --color-primary-active: var(--color-indigo-300);
    --color-secondary: rgba(var(--color-indigo-400-rgb), 0.1);
    --color-secondary-hover: rgba(var(--color-indigo-400-rgb), 0.15);
    --color-secondary-active: rgba(var(--color-indigo-400-rgb), 0.2);
    --color-border: var(--color-dark-gray-700);
    --color-error: var(--color-red-400);
    --color-success: var(--color-indigo-400);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-dark-gray-400);
    --color-focus-ring: rgba(var(--color-indigo-400-rgb), 0.4);
    --color-btn-primary-text: var(--color-dark-gray-900);
    --color-card-border: rgba(var(--color-dark-gray-200-rgb), 0.1);
    --color-card-border-inner: rgba(var(--color-dark-gray-200-rgb), 0.1);
    --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-dark-gray-200-rgb), 0.2);
    --color-border-secondary: rgba(var(--color-dark-gray-200-rgb), 0.2);
    --color-select-caret: rgba(var(--color-dark-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-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='%23CBD5E1' 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-indigo-400-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: 129, 140, 153; /* --color-dark-gray-400 */
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  /* RGB versions for opacity control (dark mode) */
  --color-indigo-400-rgb: 102, 92, 224;
  --color-indigo-300-rgb: 156, 136, 255;
  --color-dark-gray-200-rgb: 203, 213, 225;
  --color-rose-400-rgb: 244, 114, 182;

  /* 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-dark-gray-900);
  --color-surface: var(--color-dark-gray-800);
  --color-text: var(--color-dark-gray-200);
  --color-text-secondary: var(--color-dark-gray-400);
  --color-primary: var(--color-indigo-400);
  --color-primary-hover: var(--color-indigo-300);
  --color-primary-active: var(--color-indigo-300);
  --color-secondary: rgba(var(--color-indigo-400-rgb), 0.1);
  --color-secondary-hover: rgba(var(--color-indigo-400-rgb), 0.15);
  --color-secondary-active: rgba(var(--color-indigo-400-rgb), 0.2);
  --color-border: var(--color-dark-gray-700);
  --color-error: var(--color-red-400);
  --color-success: var(--color-indigo-400);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-dark-gray-400);
  --color-focus-ring: rgba(var(--color-indigo-400-rgb), 0.4);
  --color-btn-primary-text: var(--color-dark-gray-900);
  --color-card-border: rgba(var(--color-dark-gray-200-rgb), 0.1);
  --color-card-border-inner: rgba(var(--color-dark-gray-200-rgb), 0.1);
  --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-dark-gray-200-rgb), 0.2);
  --color-select-caret: rgba(var(--color-dark-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-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='%23CBD5E1' 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-indigo-400-rgb);
  --color-error-rgb: var(--color-red-400-rgb);
  --color-warning-rgb: var(--color-orange-400-rgb);
  --color-info-rgb: 129, 140, 153; /* --color-dark-gray-400 */
}

[data-color-scheme="light"] {
  /* RGB versions for opacity control (light mode) */
  --color-indigo-500-rgb: 88, 75, 207;
  --color-light-gray-700-rgb: 45, 55, 72;
  --color-rose-300-rgb: 251, 182, 206;
  
  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-light-gray-50);
  --color-surface: var(--color-light-gray-100);
  --color-text: var(--color-light-gray-700);
  --color-text-secondary: var(--color-light-gray-500);
  --color-primary: var(--color-indigo-500);
  --color-primary-hover: var(--color-indigo-600);
  --color-primary-active: var(--color-indigo-600);
  --color-secondary: rgba(var(--color-indigo-500-rgb), 0.08);
  --color-secondary-hover: rgba(var(--color-indigo-500-rgb), 0.15);
  --color-secondary-active: rgba(var(--color-indigo-500-rgb), 0.2);
  --color-border: var(--color-light-gray-200);
  --color-btn-primary-text: var(--color-white);
  --color-card-border: rgba(var(--color-light-gray-700-rgb), 0.08);
  --color-card-border-inner: rgba(var(--color-light-gray-700-rgb), 0.08);
  --color-error: var(--color-red-500);
  --color-success: var(--color-indigo-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-light-gray-500);
  --color-focus-ring: rgba(var(--color-indigo-500-rgb), 0.4);

  /* RGB versions for light mode */
  --color-success-rgb: var(--color-indigo-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: 113, 128, 150; /* --color-light-gray-500 */
}

/* 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 */
/* Enhanced Portfolio CSS with all functionality working */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-base);
    background: var(--color-background);
    color: var(--color-text);
    overflow-x: hidden;
    line-height: 1.6;
}

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    background: radial-gradient(circle, var(--color-dark-gray-800) 0%, var(--color-dark-gray-900) 80%); /* Subtle gradient background */
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-20); /* Space between elements */
}

.loading-logo {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-size: var(--font-size-3xl); /* Larger size for loading screen */
    font-weight: var(--font-weight-bold);
    color: var(--color-primary); /* Use primary color for branding */
    text-decoration: none;
    animation: pulse 1.5s infinite alternate; /* Subtle animation */
}

.loading-logo i {
    font-size: var(--font-size-4xl); /* Larger icon */
}

.loading-logo span {
    font-family: var(--font-family-mono);
}

.loading-text {
    font-size: var(--font-size-xl);
    color: var(--color-text); /* Use general text color */
    animation: fade-text 2s ease-in-out infinite;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

#c {
  width: 240px;
  height: 240px;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-crisp-edges;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* Main container */
.portfolio-container {
    min-height: 100vh;
    position: relative;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(var(--color-surface), 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--duration-normal) var(--ease-standard);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-16) var(--space-32);
    max-width: 1400px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-decoration: none;
}

.logo i {
    font-size: var(--font-size-2xl);
}

.logo-text {
    font-family: var(--font-family-mono);
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    /* New styles for segmented look */
    position: relative;
    background: var(--color-secondary);
    border-radius: var(--radius-full);
    padding: var(--space-4);
}



.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-12) var(--space-16);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-base);
    border-radius: var(--radius-full); /* Ensure consistent rounded corners with highlighter */
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    transition: all var(--duration-normal) var(--ease-standard);
    /* New styles for segmented look */
    position: relative; /* This is the fix to make z-index work */
    z-index: 2; /* Above the highlighter */
    background: none;
    color: var(--color-text-secondary);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
    background: none; /* Remove individual backgrounds */
    transform: none; /* Remove translateY */
}

.nav-link i {
    font-size: var(--font-size-md);
}

.nav-highlighter {
    position: absolute;
    top: var(--space-4);
    height: calc(100% - var(--space-8));
    background-color: var(--color-surface);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    z-index: 1;
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: var(--space-12);
}

.theme-toggle {
    background: var(--color-secondary);
    border: none;
    color: var(--color-text);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-base);
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: all var(--duration-normal) var(--ease-standard);
    position: relative;
    overflow: hidden;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: all var(--duration-normal) var(--ease-standard);
    transform: translate(-50%, -50%);
}

.theme-toggle:hover::before {
    width: 100%;
    height: 100%;
}

.theme-toggle:hover {
    color: white;
    transform: scale(1.05);
}

.theme-toggle i {
    position: relative;
    z-index: 1;
}

.mobile-menu-toggle {
    display: none;
    background: var(--color-secondary);
    border: none;
    color: var(--color-text);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-base);
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: all var(--duration-normal) var(--ease-standard);
}

.mobile-menu-toggle:hover {
    background: var(--color-secondary-hover);
    transform: scale(1.05);
}

/* Main content */
.main-content {
    padding-top: 80px;
    min-height: 100vh;
}

.section {
    min-height: 100vh;
    padding: var(--space-32);
    display: none;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.section.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-32);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-20);
    background: linear-gradient(135deg, var(--color-indigo-400), var(--color-indigo-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Hero Section */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 80px);
    padding: var(--space-32);
}

.hero-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-32);
    align-items: center;
    max-width: 1200px;
    width: 100%;
}

.hero-image {
    position: relative;
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: transform var(--duration-normal) var(--ease-standard);
}

.profile-img:hover {
    transform: scale(1.05) rotate(2deg);
}

.hero-text {
    text-align: left;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--space-20);
}

.greeting {
    display: block;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--space-8);
}

.name {
    display: block;
    background: linear-gradient(135deg, var(--color-light-gray-700), var(--color-indigo-500));
    -webkit-background-clip: text; /* For Safari/Chrome */
    -webkit-text-fill-color: transparent; /* For Safari/Chrome */
    background-clip: text; /* Standard */
}

.typing-text {
    display: block;
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    min-height: 1.2em;
    margin-top: var(--space-8);
}

.typing-text::after {
    content: '|';
    animation: blink 1s infinite;
    color: var(--color-primary);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    margin-bottom: var(--space-32);
    opacity: 0.9;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: var(--space-16);
    margin-bottom: var(--space-32);
    flex-wrap: wrap;
}

.social-links {
    display: flex;
    gap: var(--space-16);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--color-secondary);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-lg);
    transition: all var(--duration-normal) var(--ease-standard);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    transition: left var(--duration-normal) var(--ease-standard);
}

.social-link:hover::before {
    left: 0;
}

.social-link:hover {
    color: white;
    transform: translateY(-3px);
}

.social-link i {
    position: relative;
    z-index: 1;
}

/* Card component */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-card-border);
    box-shadow: var(--shadow-sm);
    padding: var(--space-24);
    transition: all var(--duration-normal) var(--ease-standard);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left var(--duration-normal) var(--ease-standard);
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

/* About section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-32);
    max-width: 1200px;
    margin: 0 auto;
}

.about-text h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-20);
    color: var(--color-primary);
}

.about-text p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--space-16);
    opacity: 0.9;
}

.about-highlights {
    display: grid;
    gap: var(--space-16);
}

.highlight-card {
    padding: var(--space-20);
    text-align: center;
}

.highlight-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-12);
}

.highlight-card h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-8);
}

.highlight-card p {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    line-height: 1.5;
}

/* Skills section */
.skills-container {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 60vh;
}

.skill-sphere-container {
    width: 100%;
    max-width: 600px; /* Or adjust as needed */
}

#skill-canvas {
    width: 100%;
    height: 100%;
}

/* Projects section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-24);
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 0;
    box-shadow: var(--shadow-md);
    position: relative; /* For the gradient border */
    overflow: hidden; /* Hide overflowing gradient */
}

/* Gradient top border */
.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-indigo-400), var(--color-rose-400), var(--color-orange-400));
    background-size: 200% 200%;
    transform: scaleX(0.5);
    opacity: 0.5;
    transition: transform var(--duration-normal) var(--ease-standard), opacity var(--duration-normal) var(--ease-standard);
    transform-origin: center;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(var(--color-primary-rgb), 0.2);
    border-color: var(--color-primary);
}

.project-card:hover::before {
    transform: scaleX(1);
    opacity: 1;
}

.project-content {
    padding: var(--space-24);
}

.project-header {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    margin-bottom: var(--space-16);
}

.project-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.project-header .status {
    margin-left: auto;
    flex-shrink: 0;
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: 0;
    color: var(--color-text);
    line-height: 1.3;
}

.project-description {
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-20);
    min-height: 50px; /* Ensure cards have similar height */
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-8);
}

.tech-tag {
    padding: var(--space-4) var(--space-12);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    transition: all var(--duration-fast) ease;
    /* Default colors, will be overridden by JS */
    background-color: var(--color-bg-1);
    color: var(--color-primary);
}

.tech-tag:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.project-links {
    display: flex;
    gap: var(--space-12);
    padding: var(--space-16) var(--space-24);
    border-top: 1px solid var(--color-border);
    background: var(--color-secondary);
    /* Slide-up effect on hover */
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    transform: translateY(100%);
    opacity: 0; /* Start hidden */
    transition: transform 0.3s var(--ease-standard), opacity 0.3s var(--ease-standard);
}

/* Experience section */
.experience-timeline {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-32) var(--space-16);
}

.timeline-item {
    display: flex;
    position: relative;
    margin: 0 20%; /* Creates the central gap */
    margin-bottom: var(--space-32); /* Space between items */
}

/* Icon Marker */
.timeline-item::before {
    /* Using Font Awesome unicode from data-icon */
    content: attr(data-icon);
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    top: var(--space-24);
    font-size: 1.5rem;
    color: var(--color-primary);
    z-index: 1;
}

/* Period/Date display */
.timeline-item::after {
    content: attr(data-period);
    position: absolute;
    top: calc(var(--space-24) + 4px); /* Align with icon */
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    max-width: 20%;
}

/* L-shaped border container */
.timeline-item__wrapper {
    display: flex;
    flex-direction: column;
    width: 100%;
    padding: 0 var(--space-24);
    border-top: 3px solid var(--color-primary);
    position: relative;
}

/* Left-side items */
.timeline-item:nth-child(odd) .timeline-item__wrapper {
    border-left: 3px solid var(--color-primary);
}

.timeline-item:nth-child(odd)::before {
    left: 0;
    transform: translateX(calc(-100% - var(--space-24)));
}

.timeline-item:nth-child(odd)::after {
    left: auto;
    right: calc(-20% - var(--space-32));
    transform: translateX(100%);
    text-align: left;
}

/* Right-side items */
.timeline-item:nth-child(even) {
    justify-content: flex-end;
}

.timeline-item:nth-child(even) .timeline-item__wrapper {
    border-right: 3px solid var(--color-primary);
    align-items: flex-end;
}

.timeline-item:nth-child(even) .timeline-item__content {
    text-align: right;
}

.timeline-item:nth-child(even)::before {
    right: 0;
    transform: translateX(calc(100% + var(--space-24)));
}

.timeline-item:nth-child(even)::after {
    right: auto;
    left: calc(-20% - var(--space-32));
    transform: translateX(-100%);
    text-align: right;
}

.timeline-item__content {
    padding: var(--space-24) 0;
}

.timeline-item__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-8);
    color: var(--color-text);
}

.timeline-item__meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-16);
    font-style: italic;
}

.company {
    font-weight: var(--font-weight-medium);
    font-style: normal;
    color: var(--color-primary);
}

.timeline-item__text h4 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--space-16);
    margin-bottom: var(--space-8);
    color: var(--color-text);
}

.timeline-item__text ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: var(--space-16);
}

.timeline-item__text li {
    position: relative;
    padding-left: var(--space-20);
    margin-bottom: var(--space-8);
}

.timeline-item__text li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

@media (max-width: 600px) {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.resume-controls {
    display: flex;
    gap: var(--space-12);
    justify-content: center;
    margin-bottom: var(--space-24);
    flex-wrap: wrap;
}

.resume-viewer {
    position: relative;
    overflow: auto;
    max-height: 70vh;
    border-radius: var(--radius-lg);
    background: white;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 500px;
}

/* Constrain resume viewer to A4 on wide screens and keep it responsive */
.resume-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-8);
}

/* Default (mobile/tablet): use container width */
.resume-viewer {
    width: 100%;
    max-width: 820px;
    height: auto;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    overflow: auto; /* allow pan/scroll when zoomed */
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Ensure image fits viewer by default */
#resume-image {
    width: 100%;
    height: auto;
    max-width: 100%;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}

/* Desktop: lock viewer to A4 aspect (210mm x 297mm) but never overflow viewport */
@media (min-width: 1024px) {
    .resume-viewer {
        width: 210mm;
        height: 297mm;
        max-width: calc(100vw - 80px);   /* keep margins from browser edges */
        max-height: calc(100vh - 160px); /* leave room for header/controls */
        overflow: auto;
        background: var(--color-white);
        box-shadow: var(--shadow-lg);
        border-radius: 10px;
    }

    /* Align controls to the viewer width so they don't stretch full page */
    .resume-controls {
        width: 210mm;
        max-width: calc(100vw - 80px);
        display: flex;
        gap: var(--space-8);
        flex-wrap: wrap;
        justify-content: flex-start;
    }
}

/* Small tweak for very small viewports */
@media (max-width: 420px) {
    .resume-viewer { max-width: calc(100vw - 24px); }
    .resume-controls { width: 100%; justify-content: space-between; }
}

/* Contact section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-32);
    max-width: 1200px;
    margin: 0 auto;
}

.contact-form-container h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-24);
    text-align: center;
    color: var(--color-primary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-20);
}

.form-group {
    position: relative;
}

.form-group.error .error-message {
    display: block;
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--space-4);
}

.form-group.error .form-control {
    border-color: var(--color-error);
    background: rgba(var(--color-error-rgb), 0.05);
}

.error-message {
    display: none;
}

.contact-cards {
    display: grid;
    gap: var(--space-16);
}

.contact-card {
    padding: var(--space-20);
    text-align: center;
    text-decoration: none;
    color: inherit;
    position: relative;
    display: block;
}

.contact-card:hover {
    color: inherit;
    text-decoration: none;
}

.contact-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-12);
}

.contact-card h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-8);
    color: var(--color-text);
}

.contact-card p {
    font-size: var(--font-size-md);
    opacity: 0.8;
    margin-bottom: var(--space-12);
}

.copy-contact-btn {
    background: var(--color-secondary);
    border: none;
    color: var(--color-text);
    padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-base);
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: all var(--duration-normal) var(--ease-standard);
    display: flex;
    align-items: center;
    gap: var(--space-6);
    margin: 0 auto;
}

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

.copy-contact-btn.copied {
    background: var(--color-success);
    color: white;
}

.external-link {
    position: absolute;
    top: var(--space-16);
    right: var(--space-16);
    color: var(--color-primary);
    opacity: 0.7;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: var(--space-32);
    right: var(--space-32);
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: var(--font-size-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) var(--ease-standard);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary-hover);
    transform: translateY(-3px) scale(1.05);
}

.scroll-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: conic-gradient(var(--color-indigo-400) var(--scroll-progress, 0%), transparent 0%);
    border-radius: var(--radius-sm);
    opacity: 0.3;
}

/* Toast notification */
.toast {
    position: fixed;
    top: var(--space-24);
    right: var(--space-24);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--space-16);
    box-shadow: var(--shadow-lg);
    transform: translateX(120%);
    transition: transform var(--duration-normal) var(--ease-standard);
    z-index: 2000;
    max-width: 350px;
    min-width: 300px;
}

.toast.show {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--space-12);
}

.toast-icon {
    font-size: var(--font-size-lg);
}

.toast.success {
    border-color: var(--color-success);
}

.toast.success .toast-icon {
    color: var(--color-success);
}

.toast.error {
    border-color: var(--color-error);
}

.toast.error .toast-icon {
    color: var(--color-error);
}

.toast-message {
    flex: 1;
    font-size: var(--font-size-md);
    line-height: 1.4;
}

.toast-close {
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    padding: var(--space-4);
    border-radius: var(--radius-sm);
    opacity: 0.7;
    transition: opacity var(--duration-fast) var(--ease-standard);
}

.toast-close:hover {
    opacity: 1;
}

/* Mobile overlay */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) var(--ease-standard);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Responsive design */
@media (max-width: 1024px) {
    .nav {
        padding: var(--space-16) var(--space-24);
    }
    
    .nav-menu {
        gap: var(--space-4);
    }
    
    .nav-link {
        padding: var(--space-8) var(--space-12);
        font-size: var(--font-size-xs);
    }
    
    .nav-link span {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-24);
    }
    
    .profile-img {
        width: 250px;
        height: 250px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-24);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-24);
    }
    
    .playground-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--color-surface);
        border-top: 1px solid var(--color-border);
        padding: var(--space-16);
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-8);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--duration-normal) var(--ease-standard);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        justify-content: center;
        padding: var(--space-16);
    }
    
    .nav-link span {
        display: block;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .section {
        padding: var(--space-24) var(--space-16);
    }
    
    .hero-section {
        padding: var(--space-24) var(--space-16);
    }
    
    .profile-img {
        width: 200px;
        height: 200px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .experience-timeline::before {
        display: none;
    }

    .timeline-item {
        margin-left: var(--space-16);
    }
    
    .timeline-marker {
        left: -24px;
        width: 24px;
        height: 24px;
        font-size: var(--font-size-sm);
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .resume-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .resume-viewer {
        max-height: 60vh;
        min-height: 400px;
    }
    
    .back-to-top {
        bottom: var(--space-16);
        right: var(--space-16);
        width: 50px;
        height: 50px;
    }
    
    .toast {
        left: var(--space-16);
        right: var(--space-16);
        max-width: none;
        min-width: 0;
    }
}

@media (max-width: 480px) {
    .nav {
        padding: var(--space-12) var(--space-16);
    }
    
    .section {
        padding: var(--space-16) var(--space-12);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .profile-img {
        width: 180px;
        height: 180px;
    }
    
    .card {
        padding: var(--space-16);
    }
    
    .css-generator {
        padding: var(--space-16);
    }
    
    .controls {
        gap: var(--space-12);
    }
    
    .social-links {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .resume-viewer {
        max-height: 50vh;
        min-height: 300px;
    }
}

/* Animation classes */
.animate-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus styles for accessibility */
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .back-to-top,
    .toast {
        display: none;
    }
    
    .main-content {
        padding-top: 0;
    }
    
    .section {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* Keyframe for pulse animation */
@keyframes pulse {
    from {
        transform: scale(1);
        opacity: 0.8;
    }
    to {
        transform: scale(1.05);
        opacity: 1;
    }
}

/* Keyframe for loading text fade */
@keyframes fade-text {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}