/* ===== Radix UI Inspired Portfolio Styles ===== */

/* ===== CSS Custom Properties (Design Tokens) ===== */
:root {
  /* Colors - Radix inspired neutral palette */
  --color-background: 10, 10, 10;
  --color-foreground: 250, 250, 250;
  --color-muted: 113, 113, 122;
  --color-muted-foreground: 161, 161, 170;
  --color-popover: 23, 23, 23;
  --color-popover-foreground: 250, 250, 250;
  --color-card: 23, 23, 23;
  --color-card-foreground: 250, 250, 250;
  --color-border: 64, 64, 64;
  --color-input: 38, 38, 38;
  --color-ring: 96, 165, 250;

  /* Accent colors */
  --color-primary: 96, 165, 250;
  --color-primary-foreground: 10, 10, 10;
  --color-secondary: 38, 38, 38;
  --color-secondary-foreground: 250, 250, 250;
  --color-accent: 64, 64, 64;
  --color-accent-foreground: 250, 250, 250;
  --color-destructive: 239, 68, 68;
  --color-destructive-foreground: 250, 250, 250;

  /* Semantic colors */
  --color-success: 34, 197, 94;
  --color-warning: 245, 158, 11;
  --color-info: 59, 130, 246;

  /* Border radius */
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-floating: 0 8px 32px rgba(0, 0, 0, 0.2), 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-floating-hover: 0 12px 40px rgba(0, 0, 0, 0.3), 0 6px 20px rgba(0, 0, 0, 0.15);

  /* Z-index scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;

  /* Transitions */
  --transition-duration: 150ms;
  --transition-duration-slow: 300ms;
  --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-timing-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ===== Base Styles ===== */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: rgb(var(--color-background));
  color: rgb(var(--color-foreground));
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Focus Management ===== */
:focus-visible {
  outline: 2px solid rgb(var(--color-ring));
  outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: rgb(var(--color-primary));
  color: rgb(var(--color-primary-foreground));
  padding: 8px;
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  transition: top var(--transition-duration) var(--transition-timing);
}

.skip-link:focus {
  top: 6px;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: rgb(var(--color-foreground));
}

h1 { font-size: 3rem; font-weight: 700; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

/* ===== Layout Components ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (min-width: 640px) {
  .container { padding: 0 var(--space-8); }
}

/* ===== Header/Navigation ===== */
.header {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-fixed);
  transition: all var(--transition-duration-slow) var(--transition-timing-smooth);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(var(--color-background), 0.85);
  backdrop-filter: blur(16px);
  opacity: 1;
  transition: opacity var(--transition-duration-slow) var(--transition-timing-smooth);
  border-radius: var(--radius-xl);
}

.header::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 1px solid rgba(var(--color-border), 0.5);
  border-radius: var(--radius-xl);
  pointer-events: none;
  transition: border-color var(--transition-duration-slow) var(--transition-timing-smooth);
}

.header.at-top::before {
  opacity: 0;
}

.header.at-top::after {
  border-color: transparent;
}

.header.scrolled {
  box-shadow: var(--shadow-floating-hover);
}

@media (min-width: 640px) {
  .header {
    left: var(--space-6);
    right: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .header {
    left: var(--space-8);
    right: var(--space-8);
  }
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  position: relative;
  z-index: 1;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: rgb(var(--color-foreground));
  text-decoration: none;
  transition: color var(--transition-duration-slow) var(--transition-timing-smooth);
}

.logo:hover {
  color: rgb(var(--color-primary));
}

.header.at-top .logo {
  color: rgb(var(--color-foreground));
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: rgb(var(--color-muted-foreground));
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-duration-slow) var(--transition-timing-smooth), opacity var(--transition-duration-slow) var(--transition-timing-smooth);
  position: relative;
  opacity: 1;
}

.nav-link:hover {
  color: rgb(var(--color-foreground));
  background: rgba(var(--color-accent), 0.5);
}

.header.at-top .nav-link {
  opacity: 0.8;
  transition: all var(--transition-duration-slow) var(--transition-timing-smooth), opacity var(--transition-duration-slow) var(--transition-timing-smooth);
}

.header.at-top .nav-link:hover {
  opacity: 1;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: rgb(var(--color-primary));
  transition: all var(--transition-duration) var(--transition-timing);
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 80%;
}

/* Mobile menu button - Hamburger animato */
.mobile-menu-button {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(var(--color-accent), 0.3);
  border: 1px solid rgba(var(--color-border), 0.5);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  position: relative;
  transition: all 0.3s ease;
}

.mobile-menu-button:hover {
  background: rgba(var(--color-accent), 0.5);
  border-color: rgba(var(--color-border), 0.8);
}

.mobile-menu-button svg {
  width: 22px;
  height: 22px;
  color: rgb(var(--color-foreground));
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.mobile-menu-button img {
  width: 22px;
  height: 22px;
  filter: invert(1);
  transition: all 0.3s ease;
  display: block;
}

.mobile-menu-button:hover svg,
.mobile-menu-button:hover img {
  transform: scale(1.1);
}

/* Show hamburger menu only on small mobile devices */
@media (max-width: 768px) {
  .nav-list { display: none; }
  .mobile-menu-button { display: flex; }
}

/* Tablet adjustments for nav */
@media (min-width: 768px) and (max-width: 1024px) {
  .nav-list {
    gap: var(--space-4);
  }
  
  .nav-link {
    font-size: 0.875rem;
    padding: var(--space-2);
  }
  
  .button.button-sm {
    padding: var(--space-2) var(--space-3);
    font-size: 0.75rem;
  }
}

/* ===== Button Components (Radix style) ===== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: 9999px;
  cursor: pointer;
  transition: all var(--transition-duration) var(--transition-timing);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.button:focus-visible {
  outline: 2px solid rgb(var(--color-ring));
  outline-offset: 2px;
}

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

/* Button variants */
.button-primary {
  background: rgb(var(--color-foreground));
  color: rgb(var(--color-background));
  box-shadow: var(--shadow-sm);
}

.button-primary:hover:not(:disabled) {
  background: rgb(var(--color-muted));
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.button-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.button-secondary {
  background: rgb(var(--color-secondary));
  color: rgb(var(--color-secondary-foreground));
  border: 1px solid rgb(var(--color-border));
}

.button-secondary:hover:not(:disabled) {
  background: rgb(var(--color-accent));
  border-color: rgb(var(--color-muted));
}

.button-ghost {
  background: transparent;
  color: rgb(var(--color-muted-foreground));
}

.button-ghost:hover:not(:disabled) {
  background: rgba(var(--color-accent), 0.5);
  color: rgb(var(--color-foreground));
}

.button-outline {
  background: transparent;
  color: rgb(var(--color-foreground));
  border: 1px solid rgb(var(--color-border));
}

.button-outline:hover:not(:disabled) {
  background: rgba(var(--color-accent), 0.5);
  border-color: rgb(var(--color-muted));
}

/* Button sizes */
.button-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.75rem;
}

.button-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
}

/* ===== Card Components ===== */
.card {
  background: rgba(var(--color-card), 0.5);
  border: 1px solid rgb(var(--color-border));
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-duration-slow) var(--transition-timing-smooth);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: rgb(var(--color-primary));
  background: rgba(var(--color-card), 0.8);
  transform: translateY(-4px);
  box-shadow: var(--shadow-floating-hover);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgb(var(--color-primary)), transparent);
  opacity: 0;
  transition: opacity var(--transition-duration) var(--transition-timing);
}

.card:hover::before {
  opacity: 0.3;
}

.card-header {
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: rgb(var(--color-card-foreground));
  margin: 0 0 var(--space-2) 0;
}

.card-description {
  color: rgb(var(--color-muted-foreground));
  font-size: 0.875rem;
  line-height: 1.5;
}

.card-content {
  color: rgb(var(--color-card-foreground));
}

.card-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid rgb(var(--color-border));
}

/* ===== Project Cards ===== */
.project-card {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
  height: 100%;
}

.project-card .card-header {
  flex: 0 0 auto;
}

.project-card .card-content {
  flex: 1 1 auto;
}

.project-card .card-footer {
  flex: 0 0 auto;
  margin-top: auto;
}

.project-card:focus-visible {
  outline: 2px solid rgb(var(--color-ring));
  outline-offset: 2px;
}

.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-4) 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(var(--color-primary), 0.1);
  color: rgb(var(--color-primary));
  border: 1px solid rgba(var(--color-primary), 0.2);
  border-radius: 9999px;
  transition: all var(--transition-duration) var(--transition-timing);
}

.project-card:hover .tag {
  background: rgba(var(--color-primary), 0.2);
  border-color: rgba(var(--color-primary), 0.3);
}

/* ===== Modal Component ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal-backdrop);
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-duration) var(--transition-timing);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: rgb(var(--color-popover));
  border: 1px solid rgb(var(--color-border));
  border-radius: var(--radius-xl);
  max-width: 90vw;
  max-height: 90vh;
  width: 100%;
  max-width: 1024px;
  overflow: auto;
  position: relative;
  transform: scale(0.95) translateY(10px);
  transition: all var(--transition-duration) var(--transition-timing);
  box-shadow: var(--shadow-2xl);
}

.modal-overlay.open .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: var(--space-8) var(--space-8) var(--space-4) var(--space-8);
  border-bottom: 1px solid rgb(var(--color-border));
}

.modal-title {
  font-size: 2rem;
  font-weight: 700;
  margin: 0;
  color: rgb(var(--color-popover-foreground));
}

.modal-body {
  padding: var(--space-8);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-2);
  color: rgb(var(--color-muted-foreground));
  border-radius: var(--radius-md);
  transition: all var(--transition-duration) var(--transition-timing);
}

.modal-close:hover {
  background: rgba(var(--color-accent), 0.5);
  color: rgb(var(--color-foreground));
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(var(--color-primary), 0.2) 0%, transparent 70%);
  filter: blur(80px);
  border-radius: 50%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
  z-index: 10;
  position: relative;
}

@media (min-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-text {
  padding: var(--space-8);
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, rgb(var(--color-foreground)) 0%, rgb(var(--color-muted-foreground)) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (min-width: 768px) {
  .hero-title { font-size: 4.5rem; }
}

.hero-subtitle {
  font-size: 2rem;
  font-weight: 600;
  color: rgb(var(--color-muted-foreground));
  margin-bottom: var(--space-6);
}

.hero-description {
  font-size: 1.125rem;
  color: rgb(var(--color-muted-foreground));
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero-image {
  position: absolute;
  right: 4rem;
  top: -2rem;
  max-height: 110vh;
  width: auto;
  height: auto;
  z-index: 10;
  transform: scale(1.3);
  border-radius: var(--radius-xl);
  filter: grayscale(100%) drop-shadow(15px 10px 0px rgba(0, 0, 0, 0.3));
  transition: all var(--transition-duration) var(--transition-timing);
  cursor: pointer;
}

.hero-image:hover {
  transform: scale(1.45);
  filter: grayscale(0%) drop-shadow(30px 25px 20px rgba(0, 0, 0, 0.6));
}

.about-image {
  filter: grayscale(100%);
  transition: all var(--transition-duration-slow) var(--transition-timing-smooth);
  cursor: pointer;
  border-radius: var(--radius-xl);
}

.about-image:hover {
  filter: grayscale(0%) drop-shadow(15px 15px 10px rgba(0, 0, 0, 0.4));
  transform: scale(1.05);
}

@media (min-width: 768px) {
  .hero-image {
    position: absolute;
    right: 2rem;
    top: -3rem;
    max-width: 160%;
    transform: scale(1.3);
    z-index: 10;
    border-radius: var(--radius-xl);
  }
}

/* ===== Sections ===== */
.section {
  padding: var(--space-24) 0;
  border-top: 1px solid rgb(var(--color-border));
  border-bottom: 1px solid rgb(var(--color-border));
  background: rgba(var(--color-card), 0.5);
  backdrop-filter: blur(12px);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: rgb(var(--color-foreground));
}

.section-subtitle {
  font-size: 1.25rem;
  font-weight: 600;
  color: rgb(var(--color-muted-foreground));
  margin-bottom: var(--space-6);
}

.section-description {
  font-size: 1.125rem;
  color: rgb(var(--color-muted-foreground));
  max-width: 42rem;
  margin: 0 auto;
}

/* ===== Stats Grid ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.stat-card {
  background: rgba(var(--color-card), 0.5);
  border: 1px solid rgb(var(--color-border));
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-duration-slow) var(--transition-timing-smooth);
}

.stat-card:hover {
  border-color: rgb(var(--color-primary));
  transform: translateY(-4px);
  box-shadow: var(--shadow-floating-hover);
}

.stat-value {
  font-size: 3rem;
  font-weight: 700;
  color: rgb(var(--color-primary));
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: 1.125rem;
  font-weight: 500;
  color: rgb(var(--color-muted-foreground));
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  gap: var(--space-6);
}

.skill-category {
  background: rgba(var(--color-card), 0.5);
  border: 1px solid rgb(var(--color-border));
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-duration-slow) var(--transition-timing-smooth);
}

.skill-category:hover {
  border-color: rgb(var(--color-primary));
  transform: translateY(-4px);
  box-shadow: var(--shadow-floating-hover);
}

.skill-category h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: rgb(var(--color-foreground));
  margin: 0;
}

.skill-category svg {
  flex-shrink: 0;
  vertical-align: middle;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
  font-weight: 500;
  background: rgba(var(--color-accent), 0.5);
  color: rgb(var(--color-muted-foreground));
  border: 1px solid rgba(var(--color-border), 0.5);
  border-radius: var(--radius-md);
  transition: all var(--transition-duration) var(--transition-timing);
}

.skill-badge:hover {
  background: rgba(var(--color-accent), 0.8);
  border-color: rgb(var(--color-muted));
  color: rgb(var(--color-foreground));
}

.skill-badge-featured {
  background: rgba(59, 130, 246, 0.15);
  color: rgb(147, 197, 253);
  border: 1.5px solid rgba(59, 130, 246, 0.5);
  font-weight: 600;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.skill-badge-featured:hover {
  background: rgba(59, 130, 246, 0.25);
  border-color: rgb(59, 130, 246);
  color: rgb(191, 219, 254);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

/* ===== Tables ===== */
.table-container {
  background: rgba(var(--color-card), 0.5);
  border: 1px solid rgb(var(--color-border));
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin: var(--space-6) 0;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table th,
.table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid rgb(var(--color-border));
}

.table th {
  background: rgba(var(--color-accent), 0.5);
  font-weight: 600;
  color: rgb(var(--color-foreground));
}

.table tbody tr:hover {
  background: rgba(var(--color-accent), 0.3);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* ===== Confusion Matrix ===== */
.confusion-matrix {
  width: 100%;
  max-width: 24rem;
  margin: 0 auto;
  border-collapse: collapse;
  text-align: center;
  font-size: 0.875rem;
}

.confusion-matrix th,
.confusion-matrix td {
  padding: var(--space-4);
  border: 1px solid rgb(var(--color-border));
}

.confusion-matrix th {
  background: rgba(var(--color-accent), 0.6);
  font-weight: 600;
  color: rgb(var(--color-foreground));
}

.confusion-matrix .label-col {
  background: rgba(var(--color-accent), 0.6);
  font-weight: 600;
}

.confusion-matrix .diag-correct {
  background: rgba(var(--color-success), 0.2);
  color: rgb(var(--color-success));
  font-weight: 700;
}

.confusion-matrix .diag-wrong {
  background: rgba(var(--color-destructive), 0.2);
  color: rgb(var(--color-destructive));
  font-weight: 600;
}

/* ===== Chart Container ===== */
.chart-container {
  position: relative;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  height: 300px;
  max-height: 350px;
}

@media (min-width: 768px) {
  .chart-container {
    height: 350px;
  }
}

/* ===== Footer ===== */
.footer-wrapper {
  background: rgba(var(--color-card), 0.5);
  backdrop-filter: blur(12px);
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.footer {
  background: rgba(var(--color-background), 0.85);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(var(--color-border), 0.5);
  border-radius: var(--radius-xl);
  padding: var(--space-20) var(--space-6) var(--space-10);
  margin: var(--space-8) var(--space-4) 0;
  box-shadow: var(--shadow-floating);
  transition: box-shadow var(--transition-duration-slow) var(--transition-timing-smooth);
}

.footer:hover {
  box-shadow: var(--shadow-floating-hover);
}

@media (min-width: 640px) {
  .footer-wrapper {
    padding-bottom: var(--space-6);
  }
  
  .footer {
    margin: var(--space-8) var(--space-6) 0;
    padding: var(--space-20) var(--space-8) var(--space-10);
  }
}

@media (min-width: 1024px) {
  .footer-wrapper {
    padding-bottom: var(--space-8);
  }
  
  .footer {
    margin: var(--space-8) var(--space-8) 0;
    padding: var(--space-20) var(--space-12) var(--space-10);
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-16);
  margin-bottom: var(--space-16);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(var(--color-border), 0.5);
}

.footer-section {
  display: flex;
  flex-direction: column;
}

.footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: rgb(var(--color-foreground));
}

.footer-section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-6);
  color: rgb(var(--color-foreground));
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-description {
  font-size: 0.95rem;
  color: rgb(var(--color-muted-foreground));
  margin-bottom: var(--space-6);
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.footer-social .footer-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(var(--color-foreground), 0.05);
  transition: all var(--transition-duration) var(--transition-timing);
}

.footer-social .footer-link:hover {
  background: rgba(var(--color-foreground), 0.1);
  transform: translateY(-2px);
}

.footer-social .footer-link img {
  filter: brightness(0) saturate(100%) invert(85%) sepia(0%) saturate(0%) hue-rotate(0deg);
  transition: filter var(--transition-duration) var(--transition-timing);
}

.footer-social .footer-link:hover img {
  filter: brightness(0) saturate(100%) invert(100%) sepia(0%) saturate(0%) hue-rotate(0deg);
}

.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  color: rgb(var(--color-muted-foreground));
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-duration) var(--transition-timing);
  font-size: 0.95rem;
}

.footer-link:hover {
  color: rgb(var(--color-foreground));
}

.footer-link-small {
  font-size: 0.875rem;
}

.footer-tech-tag {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: rgba(var(--color-foreground), 0.05);
  color: rgb(var(--color-muted-foreground));
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-8);
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-separator {
  color: rgb(var(--color-muted));
  font-size: 0.875rem;
}

.footer-copyright {
  color: rgb(var(--color-muted));
  font-size: 0.875rem;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }

  .footer-copyright {
    text-align: left;
  }
}

/* ===== Mobile Menu ===== */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, rgba(var(--color-background), 0.98) 0%, rgba(var(--color-popover), 0.98) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  visibility: hidden;
  transform: scale(0.95);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.mobile-menu-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: var(--space-4) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-menu-header h2 {
  display: none;
}

.mobile-menu-close {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(var(--color-accent), 0.3);
  border: 1px solid rgba(var(--color-border), 0.5);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: auto;
}

.mobile-menu-close:hover {
  background: rgba(var(--color-accent), 0.6);
  transform: rotate(90deg);
}

.mobile-menu-close img {
  width: 24px;
  height: 24px;
  filter: invert(1);
}

.mobile-menu-nav {
  width: 100%;
  max-width: 400px;
  padding: var(--space-8);
}

.mobile-menu-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-menu-nav-item {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.open .mobile-menu-nav-item {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu.open .mobile-menu-nav-item:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.open .mobile-menu-nav-item:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.open .mobile-menu-nav-item:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.open .mobile-menu-nav-item:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.open .mobile-menu-nav-item:nth-child(5) { transition-delay: 0.3s; }

.mobile-menu-nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4) var(--space-6);
  color: rgb(var(--color-foreground));
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  font-weight: 600;
  font-size: 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.mobile-menu-nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(var(--color-primary), 0.1) 0%, rgba(var(--color-primary), 0.05) 100%);
  border-radius: var(--radius-lg);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-menu-nav-link:hover::before,
.mobile-menu-nav-link:focus::before {
  opacity: 1;
}

.mobile-menu-nav-link:hover,
.mobile-menu-nav-link:focus {
  color: rgb(var(--color-primary));
  transform: scale(1.05);
}

/* Contact button special styling in mobile menu */
.mobile-menu-nav-item:last-child .mobile-menu-nav-link {
  background: linear-gradient(135deg, rgb(var(--color-primary)) 0%, rgba(var(--color-primary), 0.8) 100%);
  color: rgb(var(--color-primary-foreground));
  margin-top: var(--space-4);
  font-size: 1.125rem;
}

.mobile-menu-nav-item:last-child .mobile-menu-nav-link::before {
  display: none;
}

.mobile-menu-nav-item:last-child .mobile-menu-nav-link:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 30px rgba(var(--color-primary), 0.3);
  color: rgb(var(--color-primary-foreground));
}

/* Mobile menu decorative elements */
.mobile-menu::before {
  content: '';
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(var(--color-primary), 0.15) 0%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: -1;
}

.mobile-menu::after {
  content: '';
  position: absolute;
  bottom: 20%;
  left: 50%;
  transform: translate(-50%, 50%);
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(var(--color-ring), 0.1) 0%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: -1;
}

/* Mobile menu social links at bottom */
.mobile-menu-footer {
  position: absolute;
  bottom: var(--space-8);
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-4);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: 0.35s;
}

.mobile-menu.open .mobile-menu-footer {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu-footer a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(var(--color-accent), 0.3);
  border: 1px solid rgba(var(--color-border), 0.3);
  color: rgb(var(--color-muted-foreground));
  transition: all 0.3s ease;
}

.mobile-menu-footer a:hover {
  background: rgba(var(--color-primary), 0.2);
  border-color: rgba(var(--color-primary), 0.4);
  color: rgb(var(--color-primary));
  transform: translateY(-3px);
}

.mobile-menu-footer a svg {
  width: 20px;
  height: 20px;
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* SVG Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes glow {
  0%, 100% { filter: drop-shadow(0 0 2px rgba(var(--color-primary), 0.3)); }
  50% { filter: drop-shadow(0 0 8px rgba(var(--color-primary), 0.6)); }
}

@keyframes dataFlow {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* SVG Animation Classes */
.svg-animate-float {
  animation: float 3s ease-in-out infinite;
}

.svg-animate-glow {
  animation: glow 2s ease-in-out infinite;
}

.svg-animate-rotate-slow {
  animation: rotate 20s linear infinite;
}

/* Enhanced hover effects for SVG images */
img[src*="svg"] {
  transition: all var(--transition-duration) var(--transition-timing);
}

img[src*="svg"]:hover {
  transform: scale(1.05);
  filter: brightness(1.2);
}

/* Navigation icon animations */
.mobile-menu-button img:hover {
  animation: pulse 0.5s ease-in-out;
}

.mobile-menu-close img:hover {
  animation: rotate 0.3s ease-in-out;
}

/* Project card SVG animations */
.project-card img[src*="svg"] {
  transition: all var(--transition-duration) var(--transition-timing);
}

.project-card:hover img[src*="svg"] {
  transform: translateY(-5px) scale(1.02);
}

/* Skill icon animations */
.skill-category img[src*="svg"] {
  transition: all var(--transition-duration) var(--transition-timing);
}

.skill-category:hover img[src*="svg"] {
  transform: rotate(5deg) scale(1.1);
  filter: brightness(1.3);
}

/* Social link SVG animations */
.footer-link img[src*="svg"] {
  transition: all var(--transition-duration) var(--transition-timing);
}

.footer-link:hover img[src*="svg"] {
  transform: translateY(-2px) scale(1.1);
  filter: brightness(1.2) drop-shadow(0 4px 8px rgba(var(--color-primary), 0.4));
}

/* Hero background SVG animation */
.hero-gradient img[src*="svg"] {
  opacity: 0.2;
  transition: opacity var(--transition-duration) var(--transition-timing);
}

.hero:hover .hero-gradient img[src*="svg"] {
  opacity: 0.4;
}

/* Logo animations */
.logo img[src*="svg"] {
  transition: all var(--transition-duration) var(--transition-timing);
}

.logo:hover img[src*="svg"] {
  filter: brightness(1.2) drop-shadow(0 4px 12px rgba(var(--color-primary), 0.4));
}

/* Loading animation for SVGs */
.svg-loading {
  opacity: 0;
  animation: fadeIn 0.5s ease-out forwards;
}

/* Reduce motion support */
@media (prefers-reduced-motion: reduce) {
  .svg-animate-float,
  .svg-animate-glow,
  .svg-animate-rotate-slow {
    animation: none;
  }

  img[src*="svg"],
  .mobile-menu-button img,
  .mobile-menu-close img,
  .project-card img[src*="svg"],
  .skill-category img[src*="svg"],
  .footer-link img[src*="svg"],
  .logo img[src*="svg"] {
    transition: none;
  }

  .project-card:hover img[src*="svg"],
  .skill-category:hover img[src*="svg"],
  .footer-link:hover img[src*="svg"],
  .logo:hover img[src*="svg"] {
    transform: none;
    filter: none;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.6s ease-out forwards;
}

.animate-scale-in {
  animation: scaleIn 0.6s ease-out forwards;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ===== Scroll Animation Classes ===== */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.scroll-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

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

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }

.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-10 { margin-bottom: var(--space-10); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }

.mx-auto { margin-left: auto; margin-right: auto; }

.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-12 { gap: var(--space-12); }

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

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-full { border-radius: 9999px; }

.border { border: 1px solid rgb(var(--color-border)); }
.border-t { border-top: 1px solid rgb(var(--color-border)); }
.border-b { border-bottom: 1px solid rgb(var(--color-border)); }

.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-2xl { box-shadow: var(--shadow-2xl); }

.backdrop-blur-sm { backdrop-filter: blur(4px); }
.backdrop-blur-lg { backdrop-filter: blur(16px); }

.transition-all { transition: all var(--transition-duration) var(--transition-timing); }
.transition-colors { transition: color var(--transition-duration) var(--transition-timing); }
.transition-transform { transition: transform var(--transition-duration) var(--transition-timing); }

/* ===== Responsive Design ===== */

/* Tablet Portrait (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  /* Hero adjustments for tablet */
  .hero-title { 
    font-size: 3.5rem; 
    line-height: 1.1;
  }
  .hero-subtitle { 
    font-size: 1.75rem; 
  }
  .hero-description {
    font-size: 1.125rem;
  }
  .hero-text {
    padding: var(--space-6);
  }
  .hero-content {
    grid-template-columns: 1fr;
    max-width: 700px;
    margin: 0 auto;
  }
  
  /* Hide hero image on tablet portrait to avoid overlap */
  .hero-image {
    display: none;
  }
  
  /* Section adjustments */
  .section-title { 
    font-size: 2.25rem; 
  }
  .section-subtitle { 
    font-size: 1.125rem; 
  }
  .section-description {
    font-size: 1.125rem;
    max-width: 600px;
  }
  .section {
    padding: var(--space-20) 0;
  }
  .section-header {
    margin-bottom: var(--space-12);
  }
  
  /* Container */
  .container {
    padding: 0 var(--space-8);
    max-width: 900px;
  }
  
  /* Cards grid for tablet - 2 columns */
  .grid.md\:grid-cols-2 {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }
  
  .grid.md\:grid-cols-3 {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }
  
  /* Stats grid */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
  
  .stat-card {
    padding: var(--space-5);
  }
  
  .stat-value {
    font-size: 2.5rem;
  }
  
  /* Card adjustments */
  .card {
    padding: var(--space-5);
  }
  
  .card-title {
    font-size: 1.25rem;
  }
  
  /* Footer grid */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-10);
  }
  
  .footer {
    margin: var(--space-6) var(--space-6) 0;
    padding: var(--space-16) var(--space-6) var(--space-8);
  }
  
  /* Modal for tablet */
  .modal-content {
    max-width: 85vw;
    max-height: 90vh;
    border-radius: var(--radius-xl);
  }
  
  .modal-overlay {
    padding: var(--space-6);
  }
  
  .modal-body {
    padding: var(--space-6);
  }
  
  /* Skill categories */
  .skills-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .skill-category {
    padding: var(--space-5);
  }
  
  /* Experience cards layout */
  .flex.flex-col.md\:flex-row {
    flex-direction: row;
  }
  
  /* Tags */
  .tag {
    font-size: 0.7rem;
    padding: var(--space-1) var(--space-3);
  }
  
  /* About section image */
  .about-image {
    max-height: 400px;
    object-fit: cover;
  }
  
  /* Button sizes */
  .button-lg {
    padding: var(--space-3) var(--space-6);
    font-size: 0.9375rem;
  }
  
  /* Table adjustments */
  .table-container {
    overflow-x: auto;
  }
  
  .table {
    font-size: 0.8125rem;
    min-width: 500px;
  }
  
  /* Chart container */
  .chart-container {
    max-width: 450px;
    height: 300px;
  }
}

/* Tablet Landscape / Small Desktop (1024px - 1280px) */
@media (min-width: 1024px) and (max-width: 1280px) {
  .hero-title { 
    font-size: 4rem; 
  }
  .hero-subtitle { 
    font-size: 1.875rem; 
  }
  
  .container {
    max-width: 1000px;
    padding: 0 var(--space-8);
  }
  
  .hero-image {
    right: 1rem;
    transform: scale(1.1);
  }
  
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid.md\:grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Small Mobile (max-width: 640px) */
@media (max-width: 640px) {
  .hero-title { font-size: 2.25rem; line-height: 1.1; }
  .hero-subtitle { font-size: 1.25rem; }
  .section-title { font-size: 1.75rem; }
  .section-subtitle { font-size: 1rem; }
  .section-description { font-size: 1rem; }
  .hero-text { padding: var(--space-4); }
  .hero-description { font-size: 1rem; }
  .modal-body { padding: var(--space-4); }
  .modal-header { padding: var(--space-4) var(--space-4) var(--space-2) var(--space-4); }
  .modal-title { font-size: 1.5rem; }
  
  /* Header adjustments */
  .header {
    left: var(--space-3);
    right: var(--space-3);
    top: var(--space-3);
  }
  
  .header-content {
    padding: var(--space-3) var(--space-4);
  }
  
  .logo span {
    font-size: 1rem;
  }
  
  .logo svg {
    width: 32px;
    height: 32px;
  }
  
  /* Button adjustments */
  .button-lg {
    padding: var(--space-3) var(--space-5);
    font-size: 0.875rem;
  }
  
  /* Stats grid */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }
  
  .stat-card {
    padding: var(--space-4);
  }
  
  .stat-value {
    font-size: 2rem;
  }
  
  .stat-label {
    font-size: 0.875rem;
  }
  
  /* Card adjustments */
  .card {
    padding: var(--space-4);
  }
  
  .card-title {
    font-size: 1.125rem;
  }
  
  /* Footer grid */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-8);
  }
  
  .footer {
    margin: var(--space-4) var(--space-3) 0;
    padding: var(--space-12) var(--space-4) var(--space-6);
  }
  
  /* Section padding */
  .section {
    padding: var(--space-16) 0;
  }
  
  .section-header {
    margin-bottom: var(--space-10);
  }
  
  /* Container padding */
  .container {
    padding: 0 var(--space-4);
  }
  
  /* Skill badges */
  .skill-badge {
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
  }
  
  /* Tags */
  .tag {
    font-size: 0.65rem;
    padding: 2px var(--space-2);
  }
}

/* Mobile devices (max-width: 768px) */
@media (max-width: 768px) {
  .hero-image {
    display: none;
  }
  
  .hero-title { font-size: 2.5rem; }
  .hero-subtitle { font-size: 1.5rem; }
  
  /* Modal fullscreen on mobile */
  .modal-content {
    max-width: 100%;
    max-height: 100%;
    border-radius: 0;
    margin: 0;
  }
  
  .modal-overlay {
    padding: 0;
  }
  
  /* Confusion matrix responsive */
  .confusion-matrix {
    font-size: 0.75rem;
  }
  
  .confusion-matrix th,
  .confusion-matrix td {
    padding: var(--space-2);
  }
  
  /* Table responsive */
  .table {
    font-size: 0.75rem;
  }
  
  .table th,
  .table td {
    padding: var(--space-2) var(--space-3);
  }
  
  /* Grid stack on mobile */
  .grid.md\:grid-cols-2,
  .grid.md\:grid-cols-3 {
    grid-template-columns: 1fr;
  }
  
  /* Flex column on mobile */
  .flex.flex-col.md\:flex-row {
    flex-direction: column;
  }
  
  /* About image */
  .about-image {
    max-height: 300px;
    object-fit: cover;
  }
}

/* Very small screens (max-width: 480px) */
@media (max-width: 480px) {
  .hero-title { font-size: 1.875rem; }
  .hero-subtitle { font-size: 1.125rem; }
  .section-title { font-size: 1.5rem; }
  
  /* Flex column for buttons */
  .flex.flex-col.sm\:flex-row {
    flex-direction: column !important;
    width: 100%;
  }
  
  .flex.flex-col.sm\:flex-row > * {
    width: 100%;
    justify-content: center;
  }
  
  /* Social links */
  .flex.gap-3.items-center {
    justify-content: center;
    margin-top: var(--space-2);
  }
  
  /* Stats single column on very small screens */
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  /* Mobile menu adjustments */
  .mobile-menu-nav-link {
    font-size: 1.25rem;
    padding: var(--space-3) var(--space-4);
  }
}

/* ===== Print Styles ===== */
@media print {
  .header, .mobile-menu-button, .modal-close, .footer-links {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .hero {
    min-height: auto;
    padding: var(--space-8) 0;
  }
}