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

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

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

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

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

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

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --color-accent: #dc2626;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

@font-face {
  font-family: "Augustine Regular";
  src: url("./fonts/Augustyn.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-family-base);
}

body {
  background: var(--color-background);
  color: var(--color-text);
  line-height: var(--line-height-normal);
  overflow-x: hidden;
}

/* Loading Animation */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-background);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loader {
  width: 50px;
  height: 50px;
  border: 3px solid var(--color-secondary);
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: var(--space-16) 0;
  background: rgba(var(--color-background), 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: all 0.3s ease;
  transform: translateY(-100%);
}

.header.visible {
  transform: translateY(0);
}

.nav {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-24);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: "Augustine Regular", sans-serif;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  display: inline-block;
}

.logo-img {
  width: 150px;
  /* Adjust size as needed */
  /* height: auto; */
  display: block;
  /* Removes unwanted bottom space */
  margin: 0 auto;
  /* Centers image inside inline block */
}

.logo-container {
  text-align: center;
  /* Centers the whole logo area */
  padding: 10px 0;
  /* Optional: adds vertical spacing */
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-32);
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--color-text);
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--space-8);
  border-radius: var(--radius-base);
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background: var(--color-secondary);
  transform: scale(1.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-8);
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--color-text);
  margin: 3px 0;
  transition: 0.3s;
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background: linear-gradient(135deg, var(--color-bg-1), var(--color-bg-3));
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a"><stop offset="0" stop-color="%23ffffff" stop-opacity=".1"/><stop offset="1" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="100" cy="100" r="2" fill="url(%23a)"/><circle cx="200" cy="200" r="2" fill="url(%23a)"/><circle cx="300" cy="150" r="2" fill="url(%23a)"/><circle cx="400" cy="250" r="2" fill="url(%23a)"/><circle cx="500" cy="100" r="2" fill="url(%23a)"/><circle cx="600" cy="300" r="2" fill="url(%23a)"/><circle cx="700" cy="150" r="2" fill="url(%23a)"/><circle cx="800" cy="200" r="2" fill="url(%23a)"/><circle cx="900" cy="100" r="2" fill="url(%23a)"/></svg>') repeat;
  animation: float 20s ease-in-out infinite;
  opacity: 0.5;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0) translateX(0);
  }

  33% {
    transform: translateY(-20px) translateX(10px);
  }

  66% {
    transform: translateY(10px) translateX(-10px);
  }
}

.hero-content {
  z-index: 1;
  max-width: 800px;
  padding: 0 var(--space-24);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-16);
  background: linear-gradient(135deg,
      var(--color-primary),
      var(--color-accent));
  -webkit-background-clip: text;
  /* -webkit-text-fill-color: transparent; */
  background-clip: text;
}

.typing-text {
  min-height: 60px;
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-32);
}

.cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--color-primary);
  animation: blink 1s infinite;
  margin-left: 2px;
}

@keyframes blink {

  0%,
  50% {
    opacity: 1;
  }

  51%,
  100% {
    opacity: 0;
  }
}

.hero-buttons {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-32);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-24);
  border: none;
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(var(--color-primary), 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-secondary);
  transform: translateY(-2px);
}

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

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 20px rgba(var(--color-primary), 0.3);
}

/* Section Styles */
.section {
  padding: 100px 0;
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-24);
}
span {
  display: inline-flex;
  align-items: center;
  gap: 6px; /* automatic spacing */
  
}

.section-title {
  text-align: center;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-16);
  position: relative;
}

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

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-32);
  font-size: var(--font-size-lg);
}

/* Skills styles removed — skills will be managed with static HTML per user request */
.section.skills {
  /* Use theme-aware variables so dark mode applies correctly */
  background: var(--color-surface);
  padding: 60px 0;
  color: var(--color-text);
  font-family: "Inter", sans-serif;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

.skills-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 40px;
  margin-left: 70px;
}

.skill-category {
  margin-bottom: 30px;
}

.skill-category h3 {
  font-size: 0.8rem;
  /* primary accent should follow theme color */
  color: var(--color-primary);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skills-list span {
  background: var(--color-background);
  border: 1px solid var(--color-card-border);
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  transition: all 0.2s ease;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.75rem;
  }

  .section-subtitle {
    font-size: 0.95rem;
  }

  .skills-wrapper {
    grid-template-columns: 1fr;
    gap: 20px;
    /* margin-right: 10px; */
    margin-left: 10px;
  }
}

@media (max-width: 480px) {
  .skills-list span {
    font-size: 0.85rem;
    padding: 5px 10px;
  }

  .skill-category h3 {
    font-size: 1rem;
  }
}

/* .skills-list span:hover {
  background: #007bff;
  color: #fff;
  border-color: #007bff;
  transform: translateY(-2px);
} */

/* Projects Section */
.projects {
  background: var(--color-bg-2);
}

.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-16);
  margin-bottom: var(--space-32);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-8) var(--space-16);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: var(--font-size-sm);
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-24);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  opacity: 1;
  transform: scale(1);
}

.project-card.hidden {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

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

.project-image {
  height: 200px;
  background: linear-gradient(135deg,
      var(--color-primary),
      var(--color-primary-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-btn-primary-text);
  font-size: var(--font-size-4xl);
  position: relative;
  overflow: hidden;
}

/* Ensure images fill the project area and add a subtle dark overlay */
.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease, filter 0.3s ease;
}

.project-image::after {
  content: "";
  position: absolute;
  inset: 0; /* top:0; right:0; bottom:0; left:0 */
  background: rgba(0, 0, 0, 0.05); /* slightly darken images */
  pointer-events: none;
  transition: background 0.3s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

/* Keep old sheen animation but place it above the overlay when hovered */
.project-image::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
  transition: left 0.5s ease;
  mix-blend-mode: overlay;
}

.project-card:hover .project-image::before {
  left: 100%;
}

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

.project-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-8);
}

.project-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-12);
}

.project-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-16);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

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

.tech-tag {
  padding: var(--space-4) var(--space-8);
  background: var(--color-bg-1);
  color: var(--color-primary);
  border-radius: var(--radius-base);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-32);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.7);
  transition: transform 0.3s ease;
}

/* Modal image adjustments: make preview fit and slightly darken */
.modal .project-image {
  height: 260px;
  width: 100%;
  overflow: hidden;
  border-radius: 8px;
  position: relative;
}

.modal .project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.8);
  transition: filter 0.25s ease, transform 0.3s ease;
}

.modal .project-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.2);
  pointer-events: none;
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: var(--space-16);
  right: var(--space-16);
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color 0.3s ease;
}

.modal-close:hover {
  color: var(--color-text);
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-32);
  align-items: center;
  margin-top: var(--space-32);
}

.about-image {
  width: 320px;
  height: 350px;
  background: linear-gradient(135deg,
      var(--color-primary),
      var(--color-primary-hover));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-btn-primary-text);
  font-size: var(--font-size-4xl);
  margin: 0 auto;
}
.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;  /* image perfectly fits container */
  display: block;
  border-radius: 40%;
}

.about-text {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-24);
}

/* Education Section */
.education {
  background: var(--color-bg-3);
}

/* Responsive timeline: grid layout for desktop, stacked for mobile */
.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space-24) 0;
  display: grid;
  row-gap: var(--space-24);
}

/* Vertical center line on desktop */
.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  top: 0;
  bottom: 0;
  background: var(--color-primary);
  z-index: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 64px 1fr;
  align-items: start;
  gap: var(--space-16);
  position: relative;
  z-index: 1;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Icon sits in the middle column */
.timeline-icon {
  grid-column: 2;
  justify-self: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-btn-primary-text);
  font-size: var(--font-size-lg);
}

.timeline-content {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  max-width: 520px;
}

/* Place content on left or right side */
.timeline-item:nth-child(odd) .timeline-content {
  grid-column: 1;
  text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
  grid-column: 3;
  text-align: left;
}



/* .timeline-content::before {
  content: "";
  position: absolute;
  top: 20px;
  width: 0;
  height: 0;
  border: 10px solid transparent;
} */

.timeline-item:nth-child(odd) .timeline-content::before {
  right: calc(50% - 28px);
  border-left-color: var(--color-surface);
}

.timeline-item:nth-child(even) .timeline-content::before {
  left: calc(50% - 28px);
  border-right-color: var(--color-surface);
}

.education-degree {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-8);
}

.education-institution {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-4);
}

.education-location,
.education-year {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Mobile: stack items, move line to left */
@media (max-width: 768px) {
  .timeline {
    padding-left: var(--space-24);
  }

  .timeline::before {
    left: 28px;
    transform: translateX(0);
  }

  .timeline-item {
    grid-template-columns: 166px 2fr;
    gap: var(--space-12);
  }

  .timeline-icon {
    grid-column: 1;
    justify-self: start;
  }

  .timeline-item .timeline-content {
    grid-column: 2;
    text-align: left;
    margin-bottom: 0;
  }

  .timeline-content::before {
    display: none;
  }
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-24);
  margin-top: var(--space-32);
}

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  text-align: center;
  transition: all 0.3s ease;
}

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

.contact-icon {
  width: 60px;
  height: 60px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-btn-primary-text);
  font-size: var(--font-size-xl);
  margin: 0 auto var(--space-16);
  transition: transform 0.3s ease;
}

.contact-card:hover .contact-icon {
  transform: scale(1.1) rotate(5deg);
}

.contact-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-8);
}

.contact-info {
  color: var(--color-text-secondary);
  font-size: 13px;
}

.contact-info a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Footer */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-32) 0;
  text-align: center;
}

.footer-content {
  margin-bottom: var(--space-24);
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: var(--space-16);
  margin-bottom: var(--space-24);
}

.footer-social .social-link {
  width: 40px;
  height: 40px;
}

.footer-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-8);
}

.footer-tagline {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--space-24);
  right: var(--space-24);
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: all 0.3s ease;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-hover);
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(var(--color-primary), 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right 0.3s ease;
    gap: var(--space-24);
  }

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

  .hamburger {
    display: flex;
    z-index: 1001;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    left: 60px;
    right: 0;
  }

  .timeline-item:nth-child(odd) .timeline-content::before,
  .timeline-item:nth-child(even) .timeline-content::before {
    left: -20px;
    border-right-color: var(--color-surface);
    border-left-color: transparent;
  }

  .timeline-icon {
    left: 20px;
    transform: translateX(-50%);
  }

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

  .section {
    padding: 60px 0;
  }

  .modal-content {
    width: 95%;
    padding: var(--space-24);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-16);
  }

  .nav {
    padding: 0 var(--space-16);
  }

  .hero-content {
    padding: 0 var(--space-16);
  }

  .project-filters {
    gap: var(--space-8);
  }

  .filter-btn {
    padding: var(--space-6) var(--space-12);
    font-size: var(--font-size-xs);
  }
}

/* Animation classes */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.5s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}