/* Consolidated Design System and Portfolio CSS */

/* Root Variables - Updated for Professional AI/ML Theme */
:root {
  /* Primitive Color Tokens - Refined for tech-professional look: Cooler blues, subtle accents */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-neutral-50: rgba(250, 250, 250, 1); /* Softer cream for backgrounds */
  --color-neutral-100: rgba(245, 245, 245, 1);
  --color-gray-200: rgba(229, 231, 235, 1); /* Lighter grays for dividers */
  --color-gray-300: rgba(156, 163, 175, 1);
  --color-gray-400: rgba(107, 114, 128, 1);
  --color-slate-500: rgba(100, 116, 139, 1); /* Adjusted slate for secondary text */
  --color-brown-600: rgba(87, 83, 78, 1); /* Neutralized brown for borders */
  --color-charcoal-700: rgba(31, 41, 55, 1); /* Deeper charcoal for dark mode */
  --color-charcoal-800: rgba(17, 24, 39, 1);
  --color-slate-900: rgba(15, 23, 42, 1); /* Darker slate for text */
  --color-blue-300: rgba(59, 130, 246, 1); /* AI-inspired blue accents */
  --color-blue-400: rgba(37, 99, 235, 1);
  --color-blue-500: rgba(29, 78, 216, 1);
  --color-blue-600: rgba(30, 64, 175, 1);
  --color-blue-700: rgba(30, 58, 138, 1);
  --color-blue-800: rgba(23, 37, 84, 1);
  --color-red-400: rgba(248, 113, 113, 1); /* Softer red for errors */
  --color-red-500: rgba(220, 38, 38, 1);
  --color-orange-400: rgba(251, 146, 60, 1); /* Muted orange for warnings */
  --color-orange-500: rgba(234, 88, 12, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 87, 83, 78;
  --color-blue-500-rgb: 29, 78, 216;
  --color-slate-900-rgb: 15, 23, 42;
  --color-slate-500-rgb: 100, 116, 139;
  --color-red-500-rgb: 220, 38, 38;
  --color-red-400-rgb: 248, 113, 113;
  --color-orange-500-rgb: 234, 88, 12;
  --color-orange-400-rgb: 251, 146, 60;
  --color-gray-400-rgb: 107, 114, 128;
  --color-blue-300-rgb: 59, 130, 246;
  --color-gray-300-rgb: 156, 163, 175;
  --color-gray-200-rgb: 229, 231, 235;

  /* Background color tokens (Light Mode) - Subtle, professional gradients */
  --color-bg-1: rgba(59, 130, 246, 0.05); /* Subtle blue tint */
  --color-bg-2: rgba(245, 158, 11, 0.05);
  --color-bg-3: rgba(34, 197, 94, 0.05);
  --color-bg-4: rgba(239, 68, 68, 0.05);
  --color-bg-5: rgba(147, 51, 234, 0.05);
  --color-bg-6: rgba(249, 115, 22, 0.05);
  --color-bg-7: rgba(236, 72, 153, 0.05);
  --color-bg-8: rgba(6, 182, 212, 0.05);

  /* Semantic Color Tokens (Light Mode) - Clean, high-contrast */
  --color-background: var(--color-neutral-50);
  --color-surface: var(--color-neutral-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-blue-500);
  --color-primary-hover: var(--color-blue-600);
  --color-primary-active: var(--color-blue-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.1);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.15);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.2);
  --color-border: rgba(var(--color-brown-600-rgb), 0.15);
  --color-btn-primary-text: var(--color-white);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.1);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.1);
  --color-error: var(--color-red-500);
  --color-success: var(--color-blue-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-blue-500-rgb), 0.3);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.7);

  /* Common style patterns - Subtler focus rings */
  --focus-ring: 0 0 0 2px var(--color-focus-ring);
  --focus-outline: 1px solid var(--color-primary);
  --status-bg-opacity: 0.1;
  --status-border-opacity: 0.2;
  --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='%2315233A' 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"); /* Darker stroke for visibility */
  --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='%23E5E7EB' 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: 29, 78, 216;
  --color-error-rgb: 220, 38, 38;
  --color-warning-rgb: 234, 88, 12;
  --color-info-rgb: 100, 116, 139;

  /* Typography - Enhanced with variable fonts for better performance */
  --font-family-base: "Inter Variable", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; /* Professional mono font */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600; /* Adjusted for bolder headings */
  --font-weight-bold: 700;
  --line-height-tight: 1.25; /* Tighter for headings */
  --line-height-normal: 1.6; /* More readable body */
  --letter-spacing-tight: -0.025em; /* Subtle tightening for professionalism */

  /* Spacing - Consistent, modular scale */
  --space-0: 0;
  --space-1: 0.25rem; /* Updated to rem for scalability */
  --space-2: 0.5rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius - Softer for modern feel */
  --radius-sm: 0.375rem;
  --radius-base: 0.5rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.75rem;
  --radius-full: 9999px;

  /* Shadows - Subtler, layered for depth */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1), inset 0 -1px 0 rgba(0, 0, 0, 0.1);

  /* Animation - Slower, smoother for professionalism */
  --duration-fast: 200ms;
  --duration-normal: 300ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1); /* Ease-out for subtle reveals */

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

  /* Portfolio Specific - AI-focused: Blues for trust, neutrals for clarity */
  --color-primary: #1E40AF; /* Deep blue for tech trust */
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1E3A8A;
  --color-accent: #10B981; /* Green accent for innovation */
  --color-accent-light: #34D399;
  --color-accent-dark: #059669;
  --color-bg-light: #F9FAFB;
  --color-surface-light: rgba(255, 255, 255, 0.95);
  --color-text-light: #111827;
  --color-text-secondary-light: #4B5563;
  --color-bg-dark: #111827;
  --color-surface-dark: rgba(31, 41, 55, 0.95);
  --color-text-dark: #F9FAFB;
  --color-text-secondary-dark: #9CA3AF;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-backdrop: blur(16px); /* Softer blur */
  --header-height: 80px; /* Slightly taller for presence */
  --section-padding: 120px; /* More breathing room */
  --container-max-width: 1280px;
  --transition-smooth: all 0.3s cubic-bezier(0.2, 0, 0, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.34, 1.61, 0.7, 1.3); /* Subtler bounce */
}

/* Dynamic Theme Variables - Enhanced contrast in dark mode */
.light {
  --color-bg: var(--color-bg-light);
  --color-surface: var(--color-surface-light);
  --color-text: var(--color-text-light);
  --color-text-secondary: var(--color-text-secondary-light);
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(0, 0, 0, 0.05);
  --color-success-rgb: var(--color-blue-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);
}

.dark {
  --color-bg: var(--color-bg-dark);
  --color-surface: var(--color-surface-dark);
  --color-text: var(--color-text-dark);
  --color-text-secondary: var(--color-text-secondary-dark);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.05);
  --color-bg-1: rgba(59, 130, 246, 0.1);
  --color-bg-2: rgba(245, 158, 11, 0.1);
  --color-bg-3: rgba(34, 197, 94, 0.1);
  --color-bg-4: rgba(239, 68, 68, 0.1);
  --color-bg-5: rgba(147, 51, 234, 0.1);
  --color-bg-6: rgba(249, 115, 22, 0.1);
  --color-bg-7: rgba(236, 72, 153, 0.1);
  --color-bg-8: rgba(6, 182, 212, 0.1);
  --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-blue-300);
  --color-primary-hover: var(--color-blue-400);
  --color-primary-active: var(--color-blue-800);
  --color-secondary: rgba(var(--color-gray-400-rgb), 0.1);
  --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.15);
  --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.2);
  --color-border: rgba(var(--color-gray-400-rgb), 0.2);
  --color-error: var(--color-red-400);
  --color-success: var(--color-blue-300);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-gray-300);
  --color-focus-ring: rgba(var(--color-blue-300-rgb), 0.3);
  --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), 0.1);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.05), inset 0 -1px 0 rgba(0, 0, 0, 0.1);
  --button-border-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.7);
  --color-success-rgb: var(--color-blue-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);
}

/* Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}
.profile-container {
  text-align: center;
  margin-top: 5rem; /* Moves the block further down */
}

/* Typography - Cleaner, more readable */
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-normal) 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 - Subtler hovers, professional feel */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  position: relative;
  overflow: hidden;
}

.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);
  transform: translateY(-1px); /* Subtler lift */
  box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.15); /* Softer shadow */
}

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

.btn--outline:hover {
  background: rgba(var(--color-primary-rgb), 0.05);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.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--sm {
  padding: var(--space-2) var(--space-8);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: var(--space-6) var(--space-16);
  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 - Cleaner, more accessible */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
  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-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
}

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

select.form-control {
  padding: var(--space-4) var(--space-8);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-8) center;
  background-size: 16px;
  padding-right: var(--space-24);
}

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

.form-control:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb), 0.15); /* Subtler focus */
}

.form-control::placeholder {
  color: var(--color-text-secondary);
}

.form-label {
  display: block;
  margin-bottom: var(--space-4);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.form-group {
  margin-bottom: var(--space-12);
}

/* Card component - Cleaner, with subtle depth */
.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),
    transform var(--duration-normal) var(--ease-standard);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px); /* Subtler hover lift */
}

.card__body {
  padding: var(--space-12);
}

.card__header,
.card__footer {
  padding: var(--space-12);
  border-bottom: 1px solid var(--color-card-border-inner);
}

/* Status indicators - Minimalist */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-4) var(--space-8);
  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), var(--status-bg-opacity));
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb), var(--status-border-opacity));
}

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

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

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

/* Container layout - Wider for modern screens */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-left: clamp(1rem, 4%, 2rem);
  padding-right: clamp(1rem, 4%, 2rem);
}

#nav-hamburger {
  display: none !important;
}


@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 - Stronger focus */
.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;
  box-shadow: var(--focus-ring);
}

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

.loader {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.loader-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: loader-bounce 1.4s ease-in-out infinite both;
}

.loader-dot:nth-child(1) { animation-delay: -0.32s; }
.loader-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes loader-bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* Navigation - Cleaner, with subtle hover */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: var(--transition-smooth);
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  gap: 30px;
  list-style: none;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  padding: 10px 0;
  transition: color var(--duration-normal) var(--ease-standard);
}

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

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

.nav-controls {
  display: flex;
  align-items: center;
  gap: 15px;
}

.theme-toggle {
  width: 44px;
  height: 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.theme-icon {
  position: absolute;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 50%;
  top: 2px;
  left: 2px;
  transition: transform 0.3s ease;
}

.dark .theme-icon {
  transform: translateX(18px);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

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

/* Hero Section - Subtler animations */
.hero-section {
  height: 200vh; /* Dynamic height for devices */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
}

.hero-content {
  position: relative;
  top: 0;
  left: 0;
  transform: none;
  max-width: 90%;
  text-align: center;
  margin-bottom: 2rem;
}


.hero-canvas-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.profile-pic {
  position: absolute;
  top: 150px; /* Desktop vertical placement */
  right: 200px; /* Desktop horizontal placement */
  width: 28vw; /* Scales dynamically with screen width */
  max-width: 500px;
  height: auto;
  aspect-ratio: 1 / 1; /* Maintains a perfect circle */
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid #4CAF50;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
  z-index: 10;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Tablet (Medium Screens) */
@media (max-width: 1024px) {
  .profile-pic {
    top: 120px;
    right: 80px;
    width: 35vw;   /* Slightly smaller image */
    max-width: 350px;
  }
}

.profile-pic:hover {
  transform: scale(1.05); /* No translate needed when aligned right */
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.5);
}


.hero-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-content {
  position: absolute;
  top: 40%;
  left: 400px; /* Desktop distance from left */
  transform: translateY(-50%);
  text-align: left;
  max-width: 500px;
  z-index: 5;
  transition: all 0.3s ease-in-out;
}

/* Tablet Screens */
@media (max-width: 1024px) {
  .hero-content {
    left: 150px; /* Bring content closer to the center */
    max-width: 400px;
  }
}


.hero-text {
  text-align: left; /* Ensures headings and paragraphs align left */
}

.hero-title {
  margin-bottom: 30px;
}

.hero-greeting {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.2s forwards; /* Shorter duration */
}

.hero-name {
  display: block;
  font-size: var(--font-size-6xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-subtitle {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 500;
  color: var(--color-text);
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.8s forwards;
}

.hero-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s ease 1s forwards;
}

.scroll-indicator {
  position: absolute;
  bottom: 190px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0;
  animation: fadeIn 0.8s ease 1.5s forwards;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 4px solid var(--color-accent);
  border-bottom: 4px solid var(--color-accent);
  transform: rotate(45deg);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); } /* Reduced distance for subtlety */
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
  40% { transform: rotate(45deg) translateY(-8px); } /* Softer bounce */
  60% { transform: rotate(45deg) translateY(-4px); }
}

/* Glass Card - Minimal glassmorphism for professionalism */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  transition: var(--transition-smooth);
  position: relative;
  box-shadow: var(--shadow-sm);
}

.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(var(--color-primary-rgb), 0.2);
}

/* Flip Card Styles - Refined for better readability */
.flip-card {
  perspective: 1000px;
  cursor: pointer;
}

.flipper {
  transition: transform 0.6s ease-in-out;
  transform-style: preserve-3d;
  position: relative;
  height: 100%;
}

.front, .back {
  backface-visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: var(--space-12);
  box-sizing: border-box;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  overflow-y: auto;
}

img, video {
  max-width: 100%;
  height: auto;
}

.back {
  transform: rotateY(180deg);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.flip-card.flipped .flipper {
  transform: rotateY(180deg);
}

/* Sections - More padding for readability */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: 60px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* About Section - Cleaner layout */
.about-content {
  max-width: 900px; /* Slightly wider */
  margin: 0 auto;
}

.about-text {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  margin-bottom: 40px;
}

.about-text p {
  margin-bottom: 20px;
  color: var(--color-text-secondary);
}

.achievement-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 30px;
  text-align: center;
}

.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.metric-number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}


/* Education Section - Balanced cards */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* Further reduced min for better responsiveness and to prevent horizontal scroll */
  gap: 30px;
  overflow: visible; /* Ensure no unwanted scrollbars */
}

.education-card {
  text-align: left;
  padding: 10px;
  background: rgba(255, 255, 255, 0.05); /* Semi-transparent white for glass effect on dark theme */
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  min-height: 405px; /* Add min-height to make blocks less small */
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.education-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 20px;
}

.education-icon {
  font-size: var(--font-size-3xl);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05); /* Semi-transparent for glass effect */
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.education-details h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 5px;
}

.education-details h4 {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
  margin-bottom: 5px;
}

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

.education-description {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Add media query for better responsiveness on small screens */
@media (max-width: 300px) {
  .education-grid {
    grid-template-columns: 1fr; /* Force single column to avoid horizontal scroll */
  }
}

/* Experience Section - Timeline with subtle lines */
.experience-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 1px; /* Thinner line */
  background: var(--color-border); /* Less prominent */
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 80px;
}

.timeline-marker {
  position: absolute;
  left: 24px; /* Centered on line */
  top: 30px;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
}

.timeline-content {
  margin-left: 0;
}

.experience-header {
  margin-bottom: 20px;
}

.experience-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 5px;
}

.experience-header h4 {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
  margin-bottom: 5px;
}

.experience-duration {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.experience-achievements {
  list-style: none;
  margin-bottom: 20px;
}

.experience-achievements li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  color: var(--color-text-secondary);
}

.experience-achievements li::before {
  content: '→'; /* Subtler arrow */
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: var(--font-size-xs);
}

.experience-metrics {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.metric-badge {
  padding: 6px 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  font-weight: 500;
}

/* Projects Section - Grid with hover effects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
}

.project-card {
  cursor: pointer;
  transition: var(--transition-smooth);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 15px;
}

.project-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
}

.project-links {
  display: flex;
  gap: 10px;
}

.project-link {
  color: var(--color-text-secondary);
  transition: var(--transition-smooth);
}

.project-link:hover {
  color: var(--color-accent);
  transform: scale(1.05); /* Subtler scale */
}

.project-description {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.project-metrics {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  padding: 4px 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* Skills Section - Progress bars with smooth transitions */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.skill-category-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 25px;
  text-align: center;
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.skill-name {
  font-weight: 500;
  color: var(--color-text);
}

.skill-percentage {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  font-weight: 600;
}

.skill-bar {
  height: 6px; /* Thinner for elegance */
  background: var(--glass-bg);
  border-radius: 4px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 4px;
  width: 0%;
  transition: width 1s ease-out; /* Smoother ease */
}

/* Certifications - Grid with balanced padding */
.certifications-section {
  margin-top: 60px;
}

.certifications-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-text);
  text-align: center;
  margin-bottom: 40px;
}

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.certification-card {
  text-align: center;
  padding: 30px 20px;
}

.certification-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: 20px;
}

.certification-card h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.certification-issuer {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Contact Section - Form with better spacing */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 20px;
}

.contact-info p {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 30px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 15px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.contact-link:hover {
  color: var(--color-accent);
  transform: translateX(5px);
}

.contact-form h3 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 30px;
  text-align: center;
}

.form-message {
  margin-top: 15px;
  text-align: center;
  font-weight: 500;
}

.form-message.success {
  color: var(--color-accent);
}

.form-message.error {
  color: #ff4757;
}

/* Button Loading State */
.btn-loader {
  display: none;
}

.btn-loader .spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Footer - Minimalist */
.footer {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  border-top: 1px solid var(--glass-border);
  padding: 40px 0;
  text-align: center;
}

.footer-content p {
  color: var(--color-text-secondary);
  margin-bottom: 5px;
}

/* Responsive Design - Enhanced breakpoints */
@media (max-width: 768px) {
  :root {
    --section-padding: 80px; /* Adjusted for mobile */
    --font-size-6xl: 2.5rem;
    --font-size-4xl: 1.8rem;
    --font-size-3xl: 1.5rem;
  }
  .nav-menu {
    display: none;
    flex-direction: column;
    gap: 20px;
    position: absolute;
    top: var(--header-height);
    right: 0;
    background: var(--color-surface);
    width: 200px;
    padding: 20px;
    box-shadow: var(--shadow-md);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-hamburger {
    display: flex;
  }  
  .nav-menu {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .profile-pic {
    position: relative; /* Removes fixed positioning */
    top: 0;
    right: 0;
    margin: 20px auto;
    display: block;
    width: 60vw;   /* Centered and scaled down */
    max-width: 250px;
  }
  
  .scroll-arrow {
    display: none;
  }
  
  .hero-content {
    position: relative;
    top: auto;
    left: 0;
    transform: none; /* Disable translate for natural flow */
    max-width: 90%;
    margin: 20px auto;
    text-align: center; /* Center text on mobile */
    padding: 0 15px;
  }

  .hero-text,
  .hero-title,
  .hero-greeting,
  .hero-name,
  .hero-subtitle,
  .hero-description {
    text-align: center; /* Align everything to center on mobile */
  }

  .hero-actions {
    justify-content: center;
  }

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

  .hero-actions .btn {
    width: 100%; /* Full-width on mobile */
  }

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

  .contact-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .timeline-item {
    padding-left: 60px;
  }

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

  .scroll-indicator {
    bottom: 40px;
  }

  .timeline-marker {
    left: 11px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .glass-card {
    padding: 20px;
  }

  .hero-content {
    padding: 0 15px;
  }

  .achievement-metrics {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .metric-number {
    font-size: var(--font-size-2xl);
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(0, 0, 0, 0.2);
  }

  .dark {
    --glass-bg: rgba(0, 0, 0, 0.95);
    --glass-border: rgba(255, 255, 255, 0.2);
  }
}

/* Focus Styles for Accessibility */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}


/* Print Styles */
@media print {
  .navbar,
  .scroll-indicator,
  .hero-canvas-container {
    display: none;
  }

  .hero-section {
    height: auto;
    padding: 40px 0;
  }

  .glass-card {
    background: white;
    border: 1px solid #ddd;
  }
}

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

@font-face {
  font-family: 'Inter Variable';
  src: url('https://fonts.gstatic.com/s/inter/v13/UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuLyfAZ9hiA.woff2') format('woff2');
  font-weight: 100 900; /* Variable font for flexibility */
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('https://fonts.gstatic.com/s/jetbrainsmono/v18/tDbY2o-flEEny0FZhsfKu5WU4zr3E_BX0PnT8RD8yK1jD4vTgA.woff2') format('woff2');
  font-weight: 400;
}