: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: #ffffff;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-secondary: #475569;
  --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: #e2e8f0;
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: #e2e8f0;
  --color-card-border-inner: #e2e8f0;
  --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: #0f172a;
    --color-surface: #1e293b;
    --color-text: #f8fafc;
    --color-text-secondary: #94a3b8;
    --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: #334155;
    --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: #334155;
    --color-card-border-inner: #334155;
    --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: #334155;
    --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: #0f172a;
  --color-surface: #1e293b;
  --color-text: #f8fafc;
  --color-text-secondary: #94a3b8;
  --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: #334155;
  --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: #334155;
  --color-card-border-inner: #334155;
  --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: #334155;
  --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: #ffffff;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-secondary: #475569;
  --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: #e2e8f0;
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: #e2e8f0;
  --color-card-border-inner: #e2e8f0;
  --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 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* ====== Professional Portfolio Palette ====== */
    
    /* Primary: Elegant Blue */
    --primary-color: #898DE0;
    --primary-hover: #818cf8;
    --primary-active: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.12);
    
    /* Secondary: Warm Slate */
    --secondary-color: #64748b;
    --secondary-hover: #475569;
    
    /* Accent: Soft Violet */
    --accent-color: #a78bfa;
    --accent-light: rgba(167, 139, 250, 0.12);
    
    /* Semantic Status Colors */
    --color-success-portfolio: #10b981;
    --color-warning-portfolio: #f59e0b;
    --color-error-portfolio: #ef4444;
    
    /* Light Theme Primitives */
    --text-dark: #1e293b;
    --text-muted-dark: #475569;
    --text-light: #f1f5f9;
    --text-muted-light: #94a3b8;
    
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --bg-alt-light: #ffffff;
    --bg-alt-dark: #1e293b;
    --card-bg-light: #ffffff;
    --card-bg-dark: #1e293b;
    --border-light: #e2e8f0;
    --border-dark: #334155;
    
    --shadow-light: rgba(15, 23, 42, 0.06);
    --shadow-light-soft: rgba(15, 23, 42, 0.03);
    --shadow-dark: rgba(0, 0, 0, 0.35);
    --shadow-dark-soft: rgba(0, 0, 0, 0.2);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Mapped Theme Variables (Light by default) */
    --text-color: var(--text-dark);
    --text-secondary-portfolio: var(--text-muted-dark);
    --bg-color: var(--bg-light);
    --bg-alt: var(--bg-alt-light);
    --card-bg: var(--card-bg-light);
    --border-color: var(--border-light);
    --shadow: var(--shadow-light);
    --shadow-soft: var(--shadow-light-soft);
    
    /* Component Colors (Light) */
    --hero-gradient-1: #4f46e5;
    --hero-gradient-2: #7c3aed;
    --hero-gradient-3: #6366f1;
    --card-surface: #ffffff;
    --card-surface-alt: #f8fafc;
    --card-border: #e2e8f0;
    --tag-bg-1: rgba(99, 102, 241, 0.1);
    --tag-bg-2: rgba(16, 185, 129, 0.1);
    --tag-bg-3: rgba(245, 158, 11, 0.1);
    --tag-bg-4: rgba(167, 139, 250, 0.1);
    --tag-border-1: rgba(99, 102, 241, 0.2);
    --tag-border-2: rgba(16, 185, 129, 0.2);
    --tag-border-3: rgba(245, 158, 11, 0.2);
    --tag-border-4: rgba(167, 139, 250, 0.2);
    --tag-text: #334155;
    --input-bg: #ffffff;
    --input-border: #e2e8f0;
    --input-focus-bg: #f8fafc;
    --input-text: #1e293b;
    --badge-bg: rgba(99, 102, 241, 0.15);
    --badge-text: #4f46e5;
    --badge-border: rgba(99, 102, 241, 0.25);
    --skill-bar-bg: #e2e8f0;
    --skill-bar-border: #cbd5e1;
    --stat-bg: #f1f5f9;
    --stat-border: #e2e8f0;
    --timeline-bg: var(--card-surface);
    --timeline-border: #e2e8f0;
    --timeline-line-gradient-1: var(--primary-color);
    --timeline-line-gradient-2: var(--accent-color);
    --timeline-period: var(--primary-color);
    --experience-bg: #f8fafc;
    --experience-border: #e2e8f0;
    --experience-heading: var(--primary-color);
    --achievement-bg: #f8fafc;
    --achievement-border: #e2e8f0;
    --cert-bg: #f8fafc;
    --cert-border: #e2e8f0;
    --cert-highlight-bg: linear-gradient(135deg, rgba(99,102,241,0.06), rgba(167,139,250,0.06));
    --cert-credential: #64748b;
    --cert-year: var(--primary-color);
    --activity-bg: #f8fafc;
    --activity-border: #e2e8f0;
    --activity-accent: var(--primary-color);
    --contact-card-bg: #ffffff;
    --contact-card-border: #e2e8f0;
    --contact-form-bg: #ffffff;
    --contact-form-border: #e2e8f0;
    --form-heading: var(--primary-color);
    --footer-bg: #f1f5f9;
    --footer-border: #e2e8f0;
    --success-bg: rgba(16, 185, 129, 0.1);
    --success-text: #059669;
    --success-border: rgba(16, 185, 129, 0.25);
    --error-bg: rgba(239, 68, 68, 0.1);
    --error-text: #dc2626;
    --error-border: rgba(239, 68, 68, 0.25);
    --about-heading: var(--primary-color);
    --stat-gradient-1: var(--primary-color);
    --stat-gradient-2: var(--accent-color);
    --skills-chart-bg: #ffffff;
    --skills-chart-border: #e2e8f0;
    --skills-chart-heading: var(--primary-color);
    --tab-bg: #f1f5f9;
    --tab-text: #475569;
    --tab-border: #e2e8f0;
    --tab-active-text: #ffffff;
    --download-border: var(--primary-color);
    --nav-mobile-bg: #ffffff;
    --section-title-gradient-1: var(--primary-color);
    --section-title-gradient-2: var(--accent-color);
}

[data-theme="dark"] {
    --text-color: var(--text-light);
    --text-secondary-portfolio: var(--text-muted-light);
    --bg-color: var(--bg-dark);
    --bg-alt: var(--bg-alt-dark);
    --card-bg: var(--card-bg-dark);
    --border-color: var(--border-dark);
    --shadow: var(--shadow-dark);
    --shadow-soft: var(--shadow-dark-soft);
    
    --hero-gradient-1: #312e81;
    --hero-gradient-2: #4c1d95;
    --hero-gradient-3: #1e1b4b;
    --card-surface: #1e293b;
    --card-surface-alt: #162032;
    --card-border: #334155;
    --tag-bg-1: rgba(99, 102, 241, 0.15);
    --tag-bg-2: rgba(16, 185, 129, 0.15);
    --tag-bg-3: rgba(245, 158, 11, 0.15);
    --tag-bg-4: rgba(167, 139, 250, 0.15);
    --tag-border-1: rgba(99, 102, 241, 0.3);
    --tag-border-2: rgba(16, 185, 129, 0.3);
    --tag-border-3: rgba(245, 158, 11, 0.3);
    --tag-border-4: rgba(167, 139, 250, 0.3);
    --tag-text: #e2e8f0;
    --input-bg: #1e293b;
    --input-border: #334155;
    --input-focus-bg: #162032;
    --input-text: #f1f5f9;
    --badge-bg: rgba(129, 140, 248, 0.18);
    --badge-text: #a5b4fc;
    --badge-border: rgba(129, 140, 248, 0.3);
    --skill-bar-bg: #334155;
    --skill-bar-border: #475569;
    --stat-bg: #1e293b;
    --stat-border: #334155;
    --timeline-bg: #1e293b;
    --timeline-border: #334155;
    --timeline-period: #818cf8;
    --experience-bg: #1e293b;
    --experience-border: #334155;
    --experience-heading: #818cf8;
    --achievement-bg: #1e293b;
    --achievement-border: #334155;
    --cert-bg: #1e293b;
    --cert-border: #334155;
    --cert-highlight-bg: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(167,139,250,0.1));
    --cert-credential: #94a3b8;
    --cert-year: #818cf8;
    --activity-bg: #1e293b;
    --activity-border: #334155;
    --activity-accent: #818cf8;
    --contact-card-bg: #1e293b;
    --contact-card-border: #334155;
    --contact-form-bg: #1e293b;
    --contact-form-border: #334155;
    --form-heading: #818cf8;
    --footer-bg: #0f172a;
    --footer-border: #1e293b;
    --success-bg: rgba(16, 185, 129, 0.15);
    --success-text: #34d399;
    --success-border: rgba(16, 185, 129, 0.3);
    --error-bg: rgba(239, 68, 68, 0.15);
    --error-text: #f87171;
    --error-border: rgba(239, 68, 68, 0.3);
    --about-heading: #818cf8;
    --stat-gradient-1: #818cf8;
    --stat-gradient-2: #a78bfa;
    --skills-chart-bg: #1e293b;
    --skills-chart-border: #334155;
    --skills-chart-heading: #818cf8;
    --tab-bg: #1e293b;
    --tab-text: #94a3b8;
    --tab-border: #334155;
    --tab-active-text: #f1f5f9;
    --download-border: #818cf8;
    --nav-mobile-bg: #1e293b;
    --section-title-gradient-1: #818cf8;
    --section-title-gradient-2: #a78bfa;
}

[data-theme="light"] {
    --text-color: var(--text-dark);
    --text-secondary-portfolio: var(--text-muted-dark);
    --bg-color: var(--bg-light);
    --bg-alt: var(--bg-alt-light);
    --card-bg: var(--card-bg-light);
    --border-color: var(--border-light);
    --shadow: var(--shadow-light);
    --shadow-soft: var(--shadow-light-soft);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--card-bg);
    box-shadow: 0 2px 10px var(--shadow-soft);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;

}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 3px 0;
    transition: var(--transition);
}

.theme-toggle {
    background: var(--bg-alt);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--text-color);
}

.theme-toggle:hover {
    transform: scale(1.1);
    background: var(--primary-color);
    color: var(--text-light);
    border-color: var(--primary-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--hero-gradient-1) 0%, var(--hero-gradient-2) 50%, var(--hero-gradient-3) 100%);
    color: var(--text-light);
    padding: 2rem;
    margin-top: 70px;
}

.hero-content {
    text-align: center;
    max-width: 800px;
}

.hero-greeting {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    animation: fadeInUp 0.6s ease;
}

.hero-name {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero-role {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease;
}

.hero-tagline {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.85;
    line-height: 1.8;
    animation: fadeInUp 1.2s ease;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
    animation: fadeInUp 1.4s ease;
}

.btn {
    padding: 0.8rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--text-light);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px var(--shadow);
    background: linear-gradient(135deg, var(--primary-hover), var(--accent-color));
}

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    border-color: rgba(255, 255, 255, 0.7);
}

.hero-social {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 1.6s ease;
}

.hero-social a {
    color: #fff;
    font-size: 1.8rem;
    transition: var(--transition);
}

.hero-social a:hover {
    transform: translateY(-5px);
    opacity: 0.8;
}

/* Sections */
.section {
    padding: 5rem 2rem;
    background: var(--bg-color);
}

.section-alt {
    background: var(--bg-alt);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--section-title-gradient-1), var(--section-title-gradient-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text h3 {
    color: var(--about-heading);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.languages {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.language-badge {
    background: var(--badge-bg);
    color: var(--badge-text);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--badge-border);
}

.stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--stat-bg);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    border: 1px solid var(--stat-border);
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--stat-gradient-1), var(--stat-gradient-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary-portfolio);
    font-weight: 500;
    margin-top: 0.5rem;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background: linear-gradient(180deg, var(--timeline-line-gradient-1), var(--timeline-line-gradient-2));
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -2.5rem;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 3px solid var(--bg-alt);
}

.timeline-content {
    background: var(--timeline-bg);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    border: 1px solid var(--timeline-border);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-institution {
    font-weight: 600;
    color: var(--text-color);
}

.timeline-period {
    color: var(--timeline-period);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.timeline-grade,
.gpa-info {
    margin-top: 0.5rem;
}

/* Skills Section */
.skills-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.skill-category {
    margin-bottom: 2rem;
}

.skill-category h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.skill-item {
    margin-bottom: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.skill-bar {
    height: 10px;
    background: var(--skill-bar-bg);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--skill-bar-border);
}

.skill-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 10px;
    width: 0;
    transition: width 1s ease;
}

.skill-progress.animate {
    animation: progressAnimation 1s ease forwards;
}

.skills-chart {
    background: var(--skills-chart-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    border: 1px solid var(--skills-chart-border);
}

.skills-chart h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--skills-chart-heading);
}

#skillsChart {
    max-height: 300px;
}

/* Projects Section */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.5rem;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--text-light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--card-surface);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    transition: var(--transition);
    opacity: 1;
    transform: scale(1);
    border: 1px solid var(--card-border);
}

.project-card.hidden {
    display: none;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px var(--shadow);
    border-color: var(--primary-color);
}

.project-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.tech-tag {
    background: var(--tag-bg-1);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.85rem;
    color: var(--tag-text);
    border: 1px solid var(--tag-border-1);
}

.tech-tag:nth-child(2n) {
    background: var(--tag-bg-2);
    border-color: var(--tag-border-2);
}

.tech-tag:nth-child(3n) {
    background: var(--tag-bg-3);
    border-color: var(--tag-border-3);
}

.tech-tag:nth-child(4n) {
    background: var(--tag-bg-4);
    border-color: var(--tag-border-4);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    margin-top: 1rem;
    transition: var(--transition);
}

.project-link:hover {
    gap: 1rem;
}

/* Experience Section */
.tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.8rem 2rem;
    border: none;
    background: var(--tab-bg);
    color: var(--tab-text);
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid var(--tab-border);
}

.tab-btn:hover,
.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--text-light);
    border-color: var(--primary-color);
}

.tab-content {
    min-height: 400px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-pane.active {
    display: block;
}

.experience-list {
    display: grid;
    gap: 2rem;
}

.experience-item {
    background: var(--experience-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    border: 1px solid var(--experience-border);
}

.experience-item h3 {
    color: var(--experience-heading);
    margin-bottom: 0.5rem;
}

.exp-company {
    font-weight: 600;
    color: var(--text-color);
}

.exp-period {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background: var(--achievement-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--achievement-border);
}

.achievement-card:hover {
    transform: translateY(-5px);
}

.achievement-card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.achievement-card h3 {
    margin-bottom: 0.5rem;
}

.achievement-year {
    color: var(--primary-color);
    font-weight: 600;
}

/* Certifications */
.certifications-list {
    display: grid;
    gap: 1.5rem;
}

.cert-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: var(--cert-bg);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    transition: var(--transition);
    border: 1px solid var(--cert-border);
}

.cert-card.highlight {
    border: 2px solid var(--primary-color);
    background: var(--cert-highlight-bg);
}

.cert-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px var(--shadow);
}

.cert-icon {
    font-size: 3rem;
    color: var(--secondary-color);
}

.cert-details {
    flex: 1;
}

.cert-details h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.cert-issuer {
    font-weight: 600;
    color: var(--text-color);
}

.cert-credential {
    font-size: 0.9rem;
    color: var(--cert-credential);
    opacity: 0.8;
}

.cert-year {
    color: var(--cert-year);
    font-weight: 600;
    font-size: 0.9rem;
}

.download-btn {
    padding: 0.8rem 1.5rem;
    background: var(--primary-color);
    color: var(--text-light);
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    white-space: nowrap;
    border: 1px solid var(--download-border);
}

.download-btn:hover {
    background: var(--secondary-color);
    transform: scale(1.05);
    border-color: var(--secondary-color);
}

.download-btn i {
    font-size: 1rem;
}

/* Activities */
.activities-list {
    display: grid;
    gap: 1.5rem;
}

.activity-item {
    display: flex;
    align-items: start;
    gap: 1.5rem;
    background: var(--activity-bg);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    border: 1px solid var(--activity-border);
}

.activity-item i {
    font-size: 2rem;
    color: var(--activity-accent);
    margin-top: 0.5rem;
}

.activity-item h3 {
    color: var(--activity-accent);
    margin-bottom: 0.5rem;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.contact-card {
    background: var(--contact-card-bg);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    text-align: center;
    border: 1px solid var(--contact-card-border);
}

.contact-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-card h3 {
    margin-bottom: 0.5rem;
}

.contact-card a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-card a:hover {
    text-decoration: underline;
}

.contact-form {
    background: var(--contact-form-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-soft);
    border: 1px solid var(--contact-form-border);
}

.contact-form h3 {
    color: var(--form-heading);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--input-border);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--input-text);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--input-focus-bg);
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 5px;
    display: none;
}

.form-message.success {
    display: block;
    background: var(--success-bg);
    color: var(--success-text);
    border: 1px solid var(--success-border);
}

.form-message.error {
    display: block;
    background: var(--error-bg);
    color: var(--error-text);
    border: 1px solid var(--error-border);
}

/* Footer */
.footer {
    background: var(--footer-bg);
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--footer-border);
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

.footer-social a {
    color: var(--primary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.footer-social a:hover {
    color: var(--secondary-color);
    transform: scale(1.2);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--nav-mobile-bg);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px var(--shadow);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-name {
        font-size: 2.5rem;
    }

    .hero-greeting {
        font-size: 1.5rem;
    }

    .hero-role {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .about-content,
    .skills-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 3rem 1rem;
    }

    .cert-card {
        flex-direction: column;
        text-align: center;
    }

    .download-btn {
        width: 100%;
        justify-content: center;
    }
}