/* ========================================
   CSS Custom Properties & Foundations
   ======================================== */

:root {
  /* Colors - Light Theme */
  --color-primary: #1a1a1a;
  --color-secondary: #4a4a4a;
  --color-accent: #ef4444;
  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-text: #1a1a1a;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-shadow: rgba(15, 23, 42, 0.08);
  --color-overlay: rgba(15, 23, 42, 0.8);
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;
  
  /* Grid System */
  --grid-columns: 12;
  --grid-gap: 2rem;
  --grid-margin: 1.5rem;
  --grid-max-width: 1200px;
  
  /* Spacing Scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 50%;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* Dark Theme */
[data-theme="dark"] {
  --color-primary: #f8fafc;
  --color-secondary: #cbd5e1;
  --color-accent: #f87171;
  --color-background: #0f172a;
  --color-surface: #1e293b;
  --color-text: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-border: #334155;
  --color-border-hover: #475569;
  --color-shadow: rgba(0, 0, 0, 0.25);
  --color-overlay: rgba(0, 0, 0, 0.85);
}

/* ========================================
   Reset & Base Styles
   ======================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  overflow-x: hidden; /* Prevent horizontal scroll */
}

body {
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-regular);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden; /* Prevent horizontal scroll */
  width: 100%;
  min-width: 320px; /* Minimum width for very small screens */
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  border: none;
  background: none;
  font: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
}

/* ========================================
   Grid System & Layout
   ======================================== */

.section__container {
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--grid-margin);
  width: 100%;
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns), 1fr);
  gap: var(--grid-gap);
  width: 100%;
}

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

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Column Spans */
.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
  word-wrap: break-word;
  hyphens: auto;
}

h1 { font-size: clamp(2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.125rem, 2.5vw, 1.25rem); }
h5 { font-size: clamp(1rem, 2vw, 1.125rem); }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--space-sm);
  max-width: 65ch;
  color: var(--color-text);
  word-wrap: break-word;
  hyphens: auto;
}

/* ========================================
   Navigation
   ======================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(248, 250, 252, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
  width: 100%;
}

[data-theme="dark"] .nav {
  background: rgba(15, 23, 42, 0.95);
}

.nav__container {
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--grid-margin);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 80px;
  gap: var(--space-lg);
  width: 100%;
}

.nav__logo {
  font-size: 1.5rem;
  font-weight: var(--font-weight-black);
  color: var(--color-primary);
}

.nav__menu {
  justify-self: center;
}

.nav__list {
  display: grid;
  grid-auto-flow: column;
  gap: var(--space-xl);
  align-items: center;
}

.nav__link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-normal);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__controls {
  display: grid;
  grid-auto-flow: column;
  gap: var(--space-sm);
  align-items: center;
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--color-border);
  transform: scale(1.05);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  width: 44px;
  height: 44px;
  justify-content: center;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.nav__toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding: calc(80px + var(--space-xl)) 0 var(--space-xl);
  background: var(--color-background);
  position: relative;
  overflow: hidden;
  width: 100%;
}

.hero__grid {
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--grid-margin);
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--space-3xl);
  align-items: center;
  width: 100%;
}

.hero__badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
  width: fit-content;
}

.hero__badge-text {
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: var(--font-weight-black);
  line-height: 1.1;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.hero__title-line {
  display: block;
}

.hero__subtitle {
  font-size: clamp(1rem, 3vw, 1.25rem);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.hero__description {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-xl);
}

.hero__cta {
  display: grid;
  grid-auto-flow: column;
  gap: var(--space-md);
  justify-content: start;
  margin-bottom: var(--space-xl);
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  max-width: 400px;
}

.hero__stat {
  text-align: center;
}

.hero__stat-number {
  display: block;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: var(--font-weight-black);
  color: var(--color-accent);
}

.hero__stat-label {
  font-size: clamp(0.75rem, 2vw, 0.875rem);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.hero__visual {
  position: relative;
  display: grid;
  place-items: center;
}

.hero__image-container {
  position: relative;
  width: 350px;
  height: 350px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--color-surface);
  border: 4px solid var(--color-border);
  max-width: 100%;
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero__image-container:hover .hero__image {
  transform: scale(1.05);
}

.hero__image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(239, 68, 68, 0.1) 100%);
  pointer-events: none;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
  min-height: 48px;
  font-size: 1rem;
  text-align: center;
  white-space: nowrap;
}

.btn--sm {
  padding: 8px 16px;
  font-size: 0.875rem;
  min-height: 36px;
}

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

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

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

.btn--secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-text);
}

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

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

.btn--full {
  width: 100%;
}

/* ========================================
   Sections
   ======================================== */

section {
  padding: var(--space-3xl) 0;
  width: 100%;
  overflow-x: hidden;
}

.section__header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-lg);
  align-items: center;
  margin-bottom: var(--space-3xl);
  width: 100%;
}

.section__number {
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  padding: var(--space-xs) var(--space-sm);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-md);
  min-width: 60px;
  text-align: center;
  flex-shrink: 0;
}

.section__title {
  font-size: clamp(1.5rem, 4vw, 3rem);
  font-weight: var(--font-weight-black);
  margin: 0;
  color: var(--color-text);
}

/* ========================================
   About Section
   ======================================== */

.about {
  background: var(--color-surface);
}

.about__grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-3xl);
}

.about__text {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  max-width: none;
}

.about__companies {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.company-card {
  padding: var(--space-lg);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  display: grid;
  gap: var(--space-md);
}

.company-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 20px 40px var(--color-shadow);
}

.company-card__content {
  flex: 1;
}

.company-card__title {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.company-card__description {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.company-card__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-md);
}

.about__section-title {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.timeline {
  display: grid;
  gap: var(--space-lg);
}

.timeline__item {
  position: relative;
  padding-left: var(--space-lg);
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  border: 3px solid var(--color-background);
}

.timeline__item:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 12px;
  width: 2px;
  height: calc(100% + var(--space-lg));
  background: var(--color-border);
}

.timeline__title {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.timeline__institution {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.timeline__date {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

/* ========================================
   Experience Section
   ======================================== */

.experience__grid {
  display: grid;
  gap: var(--space-xl);
}

.experience__item {
  padding: var(--space-xl);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.experience__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px var(--color-shadow);
  border-color: var(--color-accent);
}

.experience__header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.experience__title {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.experience__company-name {
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
  margin: 0;
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.experience__date {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}

.experience__duties {
  display: grid;
  gap: var(--space-sm);
}

.experience__duties li {
  position: relative;
  padding-left: var(--space-lg);
  color: var(--color-text-secondary);
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.experience__duties li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

/* ========================================
   Projects Section
   ======================================== */

.projects {
  background: var(--color-surface);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 50px var(--color-shadow);
  border-color: var(--color-accent);
}

.project-card__image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-text));
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.project-card__placeholder {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: var(--font-weight-black);
  color: white;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.project-card__content {
  padding: var(--space-lg);
}

.project-card__title {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.project-card__description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.tag {
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

/* ========================================
   Certifications Section
   ======================================== */

.certifications {
  background: var(--color-background);
}

.certifications__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-xl);
}

.cert-category {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

.cert-category:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px var(--color-shadow);
  border-color: var(--color-accent);
}

.cert-category__title {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.cert-category__status {
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xl);
}

.cert-provider {
  margin-bottom: var(--space-xl);
}

.cert-provider:last-child {
  margin-bottom: 0;
}

.cert-provider__name {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.cert-list {
  display: grid;
  gap: var(--space-md);
}

.cert-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.cert-item:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px var(--color-shadow);
}

.cert-item__title {
  font-size: clamp(0.875rem, 2vw, 1rem);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin: 0;
}

.cert-item__status {
  font-size: clamp(0.65rem, 1.25vw, 0.75rem);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.cert-item__status--pursuing {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.cert-item__status--completed {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid #22c55e;
}

/* ========================================
   Skills Section
   ======================================== */

.skills {
  background: var(--color-surface);
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.skills__category {
  padding: var(--space-xl);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.skills__category:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px var(--color-shadow);
  border-color: var(--color-accent);
}

.skills__category-title {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.skills__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: var(--color-accent);
  color: var(--color-background);
  transform: translateY(-2px);
}

.skill-tag--primary {
  background: var(--color-accent);
  color: var(--color-background);
  border-color: var(--color-accent);
}

.skill-tag--primary:hover {
  background: var(--color-text);
  border-color: var(--color-text);
}

/* ========================================
   Contact Section
   ======================================== */

.contact {
  background: var(--color-background);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact__text {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: none;
}

.contact__info {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.contact__item {
  display: grid;
  gap: var(--space-xs);
}

.contact__label {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact__value {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  word-break: break-word;
}

.contact__social {
  display: grid;
  grid-auto-flow: column;
  gap: var(--space-lg);
  justify-content: start;
}

.social-link {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.social-link:hover {
  color: var(--color-accent);
}

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

.social-link:hover::after {
  width: 100%;
}

/* ========================================
   Forms
   ======================================== */

.form {
  display: grid;
  gap: var(--space-lg);
}

.form__group {
  position: relative;
}

.form__input {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-background);
  font-size: clamp(0.875rem, 2vw, 1rem);
  transition: all var(--transition-fast);
  outline: none;
  color: var(--color-text);
}

.form__input:focus {
  border-color: var(--color-accent);
}

.form__input:focus + .form__label,
.form__input:not(:placeholder-shown) + .form__label {
  transform: translateY(-140%) scale(0.875);
  color: var(--color-accent);
}

.form__label {
  position: absolute;
  left: var(--space-md);
  top: var(--space-md);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  pointer-events: none;
  background: var(--color-background);
  padding: 0 var(--space-xs);
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.form__textarea {
  min-height: 120px;
  resize: vertical;
}

/* ========================================
   Footer
   ======================================== */

.footer {
  background: var(--color-text);
  color: var(--color-background);
  padding: var(--space-xl) 0;
}

.footer__container {
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--grid-margin);
}

.footer__text {
  text-align: center;
  color: var(--color-background);
  opacity: 0.8;
  margin: 0;
  font-size: clamp(0.875rem, 2vw, 1rem);
}

/* ========================================
   Writeups Page Specific Styles
   ======================================== */

/* Writeups Header */
.writeups-header {
  padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
  background: linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
}

.writeups-header__content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.writeups-header__title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: var(--font-weight-black);
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--color-text), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.writeups-header__description {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3xl);
  max-width: none;
}

.writeups-header__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  max-width: 600px;
  margin: 0 auto;
}

.writeups-stat {
  text-align: center;
  padding: var(--space-lg);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.writeups-stat:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 30px var(--color-shadow);
  border-color: var(--color-accent);
}

.writeups-stat__number {
  display: block;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: var(--font-weight-black);
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.writeups-stat__label {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Filters Section */
.writeups-filters {
  padding: var(--space-3xl) 0;
  background: var(--color-surface);
}

.filters {
  margin-bottom: var(--space-xl);
}

.filters__title {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-lg);
  text-align: center;
  color: var(--color-text);
}

.filters__buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
}

.filter-btn {
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-background);
  color: var(--color-text-secondary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.filter-btn.active {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

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

/* Search */
.search {
  max-width: 500px;
  margin: 0 auto;
}

.search__container {
  position: relative;
  display: flex;
  align-items: center;
}

.search__input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  padding-right: 50px;
  background: var(--color-background);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: clamp(0.875rem, 2vw, 1rem);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.search__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.search__icon {
  position: absolute;
  right: var(--space-lg);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* Writeups Content */
.writeups-content {
  padding: var(--space-3xl) 0;
  background: var(--color-background);
}

.writeups-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

/* Writeup Cards */
.writeup-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(30px);
}

.writeup-card.animate {
  opacity: 1;
  transform: translateY(0);
}

.writeup-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 50px var(--color-shadow);
  border-color: var(--color-accent);
}

.writeup-card__image {
  height: 180px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-text));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.writeup-card__placeholder {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: var(--font-weight-black);
  color: white;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  letter-spacing: 0.1em;
}

.writeup-card__difficulty {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  border-radius: var(--radius-full);
  font-size: clamp(0.65rem, 1.25vw, 0.75rem);
  font-weight: var(--font-weight-bold);
  text-transform: capitalize;
  backdrop-filter: blur(10px);
}

.writeup-card__featured {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(255, 215, 0, 0.95);
  color: #1a1a1a;
  border-radius: var(--radius-full);
  font-size: clamp(0.65rem, 1.25vw, 0.75rem);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  backdrop-filter: blur(10px);
}

.writeup-card__content {
  padding: var(--space-lg);
}

.writeup-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.writeup-card__platform {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.writeup-card__date {
  font-size: clamp(0.65rem, 1.25vw, 0.75rem);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

.writeup-card__title {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
  line-height: 1.3;
}

.writeup-card__description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
  font-size: clamp(0.875rem, 2vw, 0.95rem);
}

.writeup-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.writeup-card__actions {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

/* ========================================
   Enhanced Modal Styles
   ======================================== */

.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(0px);
  padding: var(--space-md);
}

.modal.active {
  opacity: 1;
  visibility: visible;
  backdrop-filter: blur(8px);
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  cursor: pointer;
}

.modal__content {
  position: relative;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: calc(100vw - 2 * var(--space-md));
  max-height: calc(100vh - 2 * var(--space-md));
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  transform: scale(0.9) translateY(50px);
  transition: all var(--transition-normal);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
  overflow: hidden;
}

.modal.active .modal__content {
  transform: scale(1) translateY(0);
}

.modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  flex-shrink: 0;
  gap: var(--space-md);
}

.modal__title {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin: 0;
  line-height: 1.3;
  flex: 1;
}

.modal__close {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--color-border);
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.modal__close:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  transform: scale(1.05);
}

.modal__body {
  padding: 0;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

/* ========================================
   Enhanced Writeup Content Styles
   ======================================== */

.writeup-content {
  max-width: none;
  line-height: 1.6;
}

.writeup-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  margin: 0;
}

.writeup-category {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-accent);
  color: white;
  border-radius: var(--radius-full);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.writeup-difficulty {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-text);
  color: var(--color-background);
  border-radius: var(--radius-full);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  font-weight: var(--font-weight-semibold);
  text-transform: capitalize;
}

.writeup-date {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-border);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  font-weight: var(--font-weight-medium);
}

.writeup-htb-link {
  padding: var(--space-xs) var(--space-md);
  background: #9FEF00;
  color: #1a1a1a;
  border-radius: var(--radius-full);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.writeup-htb-link:hover {
  background: #8ED600;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(159, 239, 0, 0.3);
}

/* Markdown Content Styling */
.writeup-markdown-content {
  padding: var(--space-xl);
}

.writeup-markdown-content h1,
.writeup-markdown-content h2,
.writeup-markdown-content h3,
.writeup-markdown-content h4,
.writeup-markdown-content h5,
.writeup-markdown-content h6 {
  color: var(--color-text);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  font-weight: var(--font-weight-bold);
}

.writeup-markdown-content h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  border-bottom: 3px solid var(--color-accent);
  padding-bottom: var(--space-sm);
  margin-top: 0;
}

.writeup-markdown-content h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  color: var(--color-accent);
  position: relative;
  padding-left: var(--space-lg);
}

.writeup-markdown-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 100%;
  background: var(--color-accent);
  border-radius: 2px;
}

.writeup-markdown-content h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: var(--color-text);
}

.writeup-markdown-content h4 {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
}

.writeup-markdown-content p {
  margin-bottom: var(--space-lg);
  max-width: none;
  color: var(--color-text-secondary);
  line-height: 1.7;
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.writeup-markdown-content strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.writeup-markdown-content em {
  color: var(--color-accent);
  font-style: italic;
}

/* Code Blocks */
.writeup-markdown-content pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  margin: var(--space-xl) 0;
  position: relative;
}

.writeup-markdown-content pre::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-text));
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.writeup-markdown-content code {
  background: var(--color-surface);
  color: var(--color-accent);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: clamp(0.75rem, 1.75vw, 0.9em);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  border: 1px solid var(--color-border);
}

.writeup-markdown-content pre code {
  background: none;
  color: var(--color-text);
  padding: 0;
  border: none;
  font-size: clamp(0.75rem, 1.75vw, 0.875rem);
  line-height: 1.5;
}

/* Lists */
.writeup-markdown-content ol,
.writeup-markdown-content ul {
  margin: var(--space-lg) 0;
  padding-left: var(--space-xl);
}

.writeup-markdown-content ol li,
.writeup-markdown-content ul li {
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.writeup-markdown-content ul li {
  position: relative;
}

.writeup-markdown-content ul li::marker {
  color: var(--color-accent);
}

/* Links */
.writeup-markdown-content a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.writeup-markdown-content a:hover {
  border-bottom-color: var(--color-accent);
  color: var(--color-text);
}

/* Images */
.writeup-markdown-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin: var(--space-lg) 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Tables */
.writeup-markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  font-size: clamp(0.75rem, 1.75vw, 0.875rem);
}

.writeup-markdown-content th,
.writeup-markdown-content td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.writeup-markdown-content th {
  background: var(--color-text);
  color: var(--color-background);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  font-size: clamp(0.65rem, 1.5vw, 0.75rem);
}

.writeup-markdown-content td {
  color: var(--color-text-secondary);
}

.writeup-markdown-content tr:hover {
  background: var(--color-border);
}

/* Blockquotes */
.writeup-markdown-content blockquote {
  margin: var(--space-xl) 0;
  padding: var(--space-lg);
  border-left: 4px solid var(--color-accent);
  background: var(--color-surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  position: relative;
}

.writeup-markdown-content blockquote::before {
  content: '"';
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--color-accent);
  opacity: 0.3;
  font-family: serif;
}

.writeup-markdown-content blockquote p {
  margin: 0;
  color: var(--color-text);
  font-style: italic;
  padding-left: var(--space-lg);
}

/* Horizontal Rules */
.writeup-markdown-content hr {
  border: none;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: var(--space-3xl) 0;
}

/* Loading and Error States */
.writeup-loading,
.writeup-error {
  text-align: center;
  padding: var(--space-3xl);
}

.writeup-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.writeup-error h3 {
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

.writeup-error p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  max-width: none;
  font-size: clamp(0.875rem, 2vw, 1rem);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-border);
  border-top: 4px solid var(--color-accent);
  border-radius: 50%;
  animation: rotate 1s linear infinite;
}

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

/* ========================================
   Responsive Design - Mobile First Approach
   ======================================== */

/* Extra Small Devices (Portrait Phones) */
@media (max-width: 575px) {
  :root {
    --grid-margin: 1rem;
    --space-3xl: 3rem;
    --space-2xl: 2.5rem;
    --space-xl: 2rem;
    --space-lg: 1.5rem;
    --grid-gap: 1rem;
  }

  .nav__container {
    height: 70px;
    padding: 0 var(--grid-margin);
  }
  
  .nav__logo {
    font-size: 1.25rem;
  }
  
  .nav__menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-background);
    border-top: 1px solid var(--color-border);
    transform: translateY(-200vh);
    transition: transform var(--transition-normal);
    padding: var(--space-lg);
    z-index: 999;
  }
  
  .nav__menu.active {
    transform: translateY(0);
  }
  
  .nav__list {
    grid-auto-flow: row;
    gap: var(--space-lg);
    justify-items: center;
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav__toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  .hero {
    padding: calc(70px + var(--space-lg)) 0 var(--space-xl);
    min-height: calc(100vh - 70px);
  }
  
  .hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }
  
  .hero__image-container {
    width: 200px;
    height: 200px;
  }
  
  .hero__cta {
    grid-auto-flow: row;
    justify-content: stretch;
    gap: var(--space-sm);
  }
  
  .hero__stats {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    max-width: 250px;
    margin: 0 auto;
  }
  
  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .experience__header {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    text-align: center;
  }
  
  .experience__date {
    white-space: normal;
  }
  
  .section__header {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    text-align: center;
  }
  
  .projects__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .certifications__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .skills__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .company-card,
  .cert-item {
    text-align: center;
  }
  
  .company-card__actions {
    justify-content: center;
  }
  
  .cert-item {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  
  .contact__social {
    grid-auto-flow: row;
    gap: var(--space-sm);
    text-align: center;
    justify-content: center;
  }
  
  .cert-category {
    padding: var(--space-lg);
  }
  
  .cert-item {
    padding: var(--space-sm);
  }

  /* Modal adjustments for very small screens */
  .modal {
    padding: var(--space-sm);
  }
  
  .modal__content {
    max-width: calc(100vw - 2 * var(--space-sm));
    max-height: calc(100vh - 2 * var(--space-sm));
  }
  
  .modal__header {
    padding: var(--space-sm);
    flex-direction: row;
    align-items: center;
  }
  
  .modal__title {
    font-size: 1rem;
  }
  
  .modal__close {
    width: 36px;
    height: 36px;
    font-size: 1.25rem;
  }
  
  .writeup-markdown-content {
    padding: var(--space-sm);
  }
  
  .writeup-meta {
    padding: var(--space-sm);
  }

  .writeups-header__stats {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    max-width: 300px;
  }

  .writeups-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .writeup-card__actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .writeup-card__actions .btn {
    width: 100%;
  }
}

/* Small Devices (Landscape Phones) */
@media (min-width: 576px) and (max-width: 767px) {
  .nav__menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--color-background);
    border-top: 1px solid var(--color-border);
    transform: translateY(-200vh);
    transition: transform var(--transition-normal);
    padding: var(--space-lg);
    z-index: 999;
  }
  
  .nav__menu.active {
    transform: translateY(0);
  }
  
  .nav__list {
    grid-auto-flow: row;
    gap: var(--space-lg);
    justify-items: center;
  }
  
  .nav__toggle {
    display: flex;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }
  
  .hero__image-container {
    width: 250px;
    height: 250px;
  }
  
  .hero__stats {
    grid-template-columns: repeat(3, 1fr);
    max-width: 100%;
  }

  .writeups-header__stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .writeups-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

/* Medium Devices (Tablets) */
@media (min-width: 768px) and (max-width: 991px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }
  
  .hero__image-container {
    width: 280px;
    height: 280px;
  }
  
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .experience__header {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  
  .certifications__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

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

  .skills__grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

/* Large Devices (Desktops) */
@media (min-width: 992px) and (max-width: 1199px) {
  .hero__grid {
    grid-template-columns: 1fr 350px;
  }
  
  .hero__image-container {
    width: 320px;
    height: 320px;
  }
  
  .about__grid {
    grid-template-columns: 1.5fr 1fr;
  }
  
  .projects__grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  }
}

/* Extra Large Devices (Large Desktops) */
@media (min-width: 1200px) {
  .projects__grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
  
  .certifications__grid {
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  }
}

/* ========================================
   Dark Mode Specific Adjustments
   ======================================== */

[data-theme="dark"] .hero__badge {
  background: var(--color-surface);
  border-color: var(--color-border);
}

[data-theme="dark"] .timeline__item::before {
  border-color: var(--color-surface);
}

[data-theme="dark"] .form__label {
  background: var(--color-background);
}

[data-theme="dark"] .writeup-card__difficulty {
  background: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .writeup-card__featured {
  background: rgba(255, 215, 0, 0.95);
  color: #1a1a1a;
}

[data-theme="dark"] .writeup-htb-link {
  color: #1a1a1a;
}

[data-theme="dark"] .writeup-htb-link:hover {
  color: #1a1a1a;
}

[data-theme="dark"] .modal__backdrop {
  background: rgba(0, 0, 0, 0.85);
}

/* ========================================
   Accessibility Improvements
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .writeup-card {
    transition: none;
  }
  
  .writeup-card:hover {
    transform: none;
  }
  
  .loading-spinner {
    animation: none;
  }
  
  .modal,
  .modal__content {
    transition: none;
  }
}

/* Focus states for accessibility */
.modal:focus {
  outline: none;
}

.modal__close:focus,
.btn:focus,
.nav__link:focus,
.theme-toggle:focus,
.form__input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
    --color-text-secondary: #000000;
  }
  
  [data-theme="dark"] {
    --color-border: #ffffff;
    --color-text-secondary: #ffffff;
  }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
  .nav,
  .modal__header,
  .writeup-meta,
  .hero__cta,
  .contact__form,
  .btn {
    break-inside: avoid;
  }
  
  .writeup-markdown-content {
    break-inside: auto;
  }
  
  .writeup-markdown-content h1,
  .writeup-markdown-content h2,
  .writeup-markdown-content h3 {
    break-after: avoid;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  .nav {
    display: none;
  }
  
  .hero {
    min-height: auto;
    padding: 2rem 0;
  }
}

/* ========================================
   Container Query Support (Future-proofing)
   ======================================== */

@supports (container-type: inline-size) {
  .section__container {
    container-type: inline-size;
  }
  
  @container (max-width: 768px) {
    .about__grid,
    .contact__grid {
      grid-template-columns: 1fr;
    }
  }
}

/* ========================================
   Utility Classes for Responsive Design
   ======================================== */

.hide-mobile {
  display: block;
}

.show-mobile {
  display: none;
}

@media (max-width: 767px) {
  .hide-mobile {
    display: none !important;
  }
  
  .show-mobile {
    display: block !important;
  }
}

/* Text overflow handling */
.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-break {
  word-wrap: break-word !important;
  word-break: break-word !important;
}

/* Aspect ratio utilities */
.aspect-ratio-16-9 {
  aspect-ratio: 16 / 9;
}

.aspect-ratio-1-1 {
  aspect-ratio: 1 / 1;
}

/* Responsive margin and padding */
.p-responsive {
  padding: clamp(var(--space-sm), 4vw, var(--space-xl));
}

.m-responsive {
  margin: clamp(var(--space-sm), 4vw, var(--space-xl));
}