/* ==========================================================================
   Design Tokens & CSS Variables (Fluid Responsive Core)
   ========================================================================== */
:root {
  /* Color Palette Tokens */
  --color-primary: #B33200;
  --color-primary-hover: #8C2700;
  --color-bg: #FFFFFF;
  --color-surface-subtle: #F8F8F8;
  --color-surface-tag: #F5F5F5;
  --color-text-main: #1E1E1E;
  --color-text-secondary: #5E5E5E;
  --color-text-inverse: #FFFFFF;
  --color-accent-yellow: #FFEABF;
  --color-card-border: #CCCCCC;
  --color-divider: #EAEAEA;
  --color-primary-muted: rgba(179, 50, 0, 0.08);
  --color-primary-overlay: rgba(179, 50, 0, 0.90);
  --color-white: #FFFFFF;
  --color-text-dark: #1E1E1E;
  
  /* Status Accent Tokens */
  --color-badge-completed-bg: #E8F5E9;
  --color-badge-completed-text: #2E7D32;

  /* Shadows */
  --shadow-card-subtle: 0 4px 16px rgba(0, 0, 0, 0.03);
  --shadow-contact-card: 0 12px 36px rgba(0, 0, 0, 0.05);
  --shadow-primary-btn: 0 4px 14px rgba(179, 50, 0, 0.25);
  --shadow-primary-btn-hover: 0 6px 20px rgba(179, 50, 0, 0.35);

  --color-header-scrolled-bg: rgba(255, 255, 255, 0.90);

  /* Fluid Layout Grid System (Adapts continuously without breakpoint jumps) */
  --grid-columns: 12;
  --grid-gutter: clamp(1rem, 2vw, 1.5rem);        /* 16px -> 24px */
  --grid-margin: clamp(1.25rem, 5.5vw, 5rem);     /* 20px -> 80px */
  --container-max-width: 1440px;

  /* Fluid Typography Scale Tokens (Pure Fluid Responsive Scaling via clamp) */
  --font-heading: 'Parkinsans', 'Poppins', system-ui, -apple-system, sans-serif;
  --font-body: 'Poppins', system-ui, -apple-system, sans-serif;
  
  --font-size-xs: clamp(0.775rem, 0.725rem + 0.25vw, 0.825rem); /* ~12.4px -> 13.2px */
  --font-size-sm: clamp(0.875rem, 0.825rem + 0.35vw, 0.95rem);   /* ~14px -> 15.2px */
  --font-size-md: clamp(0.975rem, 0.925rem + 0.4vw, 1.05rem);    /* ~15.6px -> 16.8px */
  --font-size-lg: clamp(1.1rem, 1.025rem + 0.6vw, 1.25rem);      /* ~17.6px -> 20px */
  --font-size-xl: clamp(1.3rem, 1.2rem + 0.8vw, 1.5rem);        /* ~20.8px -> 24px */
  --font-size-2xl: clamp(1.65rem, 1.45rem + 1.2vw, 2.25rem);    /* ~26.4px -> 36px */
  --font-size-3xl: clamp(1.85rem, 1.55rem + 1.6vw, 2.75rem);    /* ~29.6px -> 44px */
  --font-size-hero: clamp(1.95rem, 1.55rem + 2.5vw, 3.25rem);   /* ~31.2px -> 52px */
  
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Transitions */
  --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Dark Mode Design Tokens (WCAG 2.1 AA/AAA Compliant)
   ========================================================================== */
[data-theme="dark"] {
  --color-primary: #FF7A45;
  --color-primary-hover: #FFA07A;
  --color-bg: #141414;
  --color-surface-subtle: #1C1C1C;
  --color-surface-tag: #252525;
  --color-text-main: #F2F2F2;
  --color-text-secondary: #A3A3A3;
  --color-text-inverse: #121212;
  --color-accent-yellow: rgba(255, 122, 69, 0.22);
  --color-card-border: #2D2D2D;
  --color-divider: #282828;
  --color-primary-muted: rgba(255, 122, 69, 0.16);
  --color-primary-overlay: rgba(20, 20, 20, 0.92);
  --color-white: #FFFFFF;
  --color-text-dark: #1E1E1E;

  --color-badge-completed-bg: #1B3520;
  --color-badge-completed-text: #81C784;

  --shadow-card-subtle: 0 4px 16px rgba(0, 0, 0, 0.40);
  --shadow-contact-card: 0 12px 36px rgba(0, 0, 0, 0.50);
  --shadow-primary-btn: 0 4px 14px rgba(255, 122, 69, 0.25);
  --shadow-primary-btn-hover: 0 6px 20px rgba(255, 122, 69, 0.35);

  --color-header-scrolled-bg: rgba(20, 20, 20, 0.90);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #FF7A45;
    --color-primary-hover: #FFA07A;
    --color-bg: #141414;
    --color-surface-subtle: #1C1C1C;
    --color-surface-tag: #252525;
    --color-text-main: #F2F2F2;
    --color-text-secondary: #A3A3A3;
    --color-text-inverse: #121212;
    --color-accent-yellow: rgba(255, 122, 69, 0.22);
    --color-card-border: #2D2D2D;
    --color-divider: #282828;
    --color-primary-muted: rgba(255, 122, 69, 0.16);
    --color-primary-overlay: rgba(20, 20, 20, 0.92);
    --color-white: #FFFFFF;
    --color-text-dark: #1E1E1E;

    --color-badge-completed-bg: #1B3520;
    --color-badge-completed-text: #81C784;

    --shadow-card-subtle: 0 4px 16px rgba(0, 0, 0, 0.40);
    --shadow-contact-card: 0 12px 36px rgba(0, 0, 0, 0.50);
    --shadow-primary-btn: 0 4px 14px rgba(255, 122, 69, 0.25);
    --shadow-primary-btn-hover: 0 6px 20px rgba(255, 122, 69, 0.35);

    --color-header-scrolled-bg: rgba(20, 20, 20, 0.90);
  }
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  color: var(--color-text-main);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ==========================================================================
   Fluid Grid System Specification
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--grid-margin);
  padding-right: var(--grid-margin);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns), 1fr);
  gap: var(--grid-gutter);
}

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

/* ==========================================================================
   Accessibility Utilities (a11y)
   ========================================================================== */
.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;
}

/* Skip to Content */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1.5rem;
  z-index: 1000;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-text-main);
  color: var(--color-bg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Teclado Focus Visible */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Main content top spacing to account for fixed header */
main {
  margin-top: clamp(110px, 12vw, 170px);
}

main:focus {
  outline: none;
}

/* ==========================================================================
   Header & Navigation Component
   ========================================================================== */
.site-header {
  width: 100%;
  background-color: var(--color-bg);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  transition: background-color var(--transition-smooth),
              border-color var(--transition-smooth),
              backdrop-filter var(--transition-smooth),
              box-shadow var(--transition-smooth);
}

.site-header.scrolled {
  background-color: var(--color-header-scrolled-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .site-header.scrolled {
  border-bottom: 1px solid var(--color-divider);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .site-header.scrolled {
    border-bottom: 1px solid var(--color-divider);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40);
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header.scrolled {
    background-color: var(--color-bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

.header-container {
  padding-top: clamp(1rem, 2.5vw, 2rem);
  padding-bottom: clamp(0.75rem, 2.5vw, 2rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: padding var(--transition-smooth);
}

.site-header.scrolled .header-container {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.logo-heading {
  font-size: inherit;
  font-weight: inherit;
  margin: 0;
  line-height: 1;
  display: inline-flex;
  align-items: center;
}

.logo-link {
  display: inline-flex;
  text-decoration: none;
  color: inherit;
}

.logo-img {
  width: auto;
  height: clamp(68px, 9vw, 120px);
  display: block;
  transition: height var(--transition-smooth);
  will-change: height;
}

.logo-img-dark {
  display: none;
}

.logo-img-light {
  display: block;
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .logo-img-light {
  display: none;
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .logo-img-dark {
  display: block;
}

.view-panel {
  opacity: 1;
  transition: opacity var(--transition-smooth);
}

.view-panel[hidden] {
  opacity: 0;
}

.site-header.scrolled .logo-img {
  height: 54px;
}

.navbar {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.25rem);
}

/* ==========================================================================
   Theme Switch Component (Pill Slider with Sun & Moon Icons)
   ========================================================================== */
.theme-switch {
  display: inline-block;
  --width-of-switch: 74px;
  --height-of-switch: 40px;
  --size-of-thumb: 32px;
  --slider-offset: 3px;
  position: relative;
  width: var(--width-of-switch);
  height: var(--height-of-switch);
  flex-shrink: 0;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  vertical-align: middle;
}

/* Accessible visually hidden pattern for screen readers & keyboard focus */
.theme-switch-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
}

/* Outer Slider Track */
.theme-switch-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--color-surface-tag);
  border: 1px solid var(--color-card-border);
  border-radius: 40px;
  transition: background-color var(--transition-smooth),
              border-color var(--transition-smooth),
              box-shadow var(--transition-smooth);
  display: block;
}

/* Sliding Thumb */
.theme-switch-thumb {
  position: absolute;
  width: var(--size-of-thumb);
  height: var(--size-of-thumb);
  border-radius: 50%;
  left: var(--slider-offset);
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--color-bg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.20);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              background-color var(--transition-smooth),
              box-shadow var(--transition-smooth);
  z-index: 1;
}

/* Sun and Moon Icon Containers */
.theme-switch-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  pointer-events: none;
  transition: color var(--transition-smooth),
              opacity var(--transition-smooth),
              transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-switch-icon svg,
.theme-switch-icon i,
.theme-switch-icon [data-lucide] {
  width: 18px;
  height: 18px;
  stroke-width: 2.2;
}

.theme-switch-icon-sun {
  left: 10px;
  color: var(--color-primary);
  opacity: 1;
  transform: translateY(-50%) scale(1.05);
}

.theme-switch-icon-moon {
  right: 10px;
  color: var(--color-text-secondary);
  opacity: 0.65;
  transform: translateY(-50%) scale(0.95);
}

/* Hover on switch */
.theme-switch:hover .theme-switch-slider {
  border-color: var(--color-primary);
}

.theme-switch:hover .theme-switch-thumb {
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.28);
}

/* Focus outline for keyboard navigation */
.theme-switch-input:focus-visible + .theme-switch-slider {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

/* Checked (Dark Mode) States */
.theme-switch-input:checked + .theme-switch-slider {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-card-border);
}

.theme-switch-input:checked + .theme-switch-slider .theme-switch-thumb {
  transform: translateY(-50%) translateX(34px);
  background-color: var(--color-surface-tag);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.60);
}

.theme-switch-input:checked + .theme-switch-slider .theme-switch-icon-sun {
  color: var(--color-text-secondary);
  opacity: 0.45;
  transform: translateY(-50%) scale(0.95);
}

.theme-switch-input:checked + .theme-switch-slider .theme-switch-icon-moon {
  color: var(--color-primary);
  opacity: 1;
  transform: translateY(-50%) scale(1.1);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3.5vw, 3rem);
  list-style: none;
}

.nav-item {
  display: inline-block;
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-main);
  text-decoration: none;
  position: relative;
  padding: 0.4rem 0.2rem;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active,
.nav-link[aria-current="page"] {
  color: var(--color-primary);
}

.nav-link.active,
.nav-link[aria-current="page"] {
  font-weight: var(--font-weight-semibold);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after,
.nav-link[aria-current="page"]::after {
  width: 100%;
}

/* ==========================================================================
   Mobile Menu (hamburger). Only active once MenuManager adds .js-menu to <html>; without JS
   the regular inline nav stays visible.
   ========================================================================== */
.nav-toggle {
  display: none;
}

@media (max-width: 768px) {
  .header-container {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
  }

  .navbar {
    gap: 0.75rem;
  }

  .js-menu .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--color-card-border);
    border-radius: 50%;
    background-color: var(--color-surface-tag);
    color: var(--color-text-main);
    cursor: pointer;
    transition: border-color var(--transition-fast);
  }

  .js-menu .nav-toggle:hover {
    border-color: var(--color-primary);
  }

  .js-menu .nav-toggle:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
  }

  /* Three bars drawn with one span + two pseudo-elements; they morph into an X */
  .nav-toggle-bars,
  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background-color: currentColor;
    transition: transform 0.25s ease, background-color 0.25s ease;
  }

  .nav-toggle-bars {
    position: relative;
  }

  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    content: '';
    position: absolute;
    left: 0;
  }

  .nav-toggle-bars::before {
    top: -6px;
  }

  .nav-toggle-bars::after {
    top: 6px;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bars {
    background-color: transparent;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
    transform: translateY(-6px) rotate(-45deg);
  }

  /* Dropdown panel under the header (links only; the theme switch stays in the header bar) */
  .js-menu #primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 0.25rem var(--grid-margin) 0.75rem;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-divider);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity var(--transition-fast),
                transform var(--transition-fast),
                visibility 0s linear var(--transition-fast);
  }

  .js-menu #primary-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0s;
  }

  .js-menu .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .js-menu .nav-link {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0 0.2rem;
    font-size: var(--font-size-lg);
  }

  .js-menu .nav-link::after {
    left: 0.2rem;
    bottom: 8px;
    width: 0%;
  }

  .js-menu .nav-link:hover::after,
  .js-menu .nav-link.active::after,
  .js-menu .nav-link[aria-current="page"]::after {
    width: 2.5rem;
  }
}

/* ==========================================================================
   Scroll Reveal (classes are added by RevealManager only when motion is allowed)
   ========================================================================== */
@media (prefers-reduced-motion: no-preference) {
  body .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }

  body .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

@media print {
  body .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ==========================================================================
   Hero Section Component (Fluid)
   ========================================================================== */
.hero-section {
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  padding-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.hero-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.hero-breadcrumb:hover {
  color: var(--color-primary);
}

.hero-breadcrumb [data-lucide] {
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 2.2;
  transition: transform var(--transition-fast);
}

.hero-breadcrumb:hover [data-lucide] {
  transform: translateX(-3px);
}

.hero-breadcrumb:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: 6px;
  color: var(--color-primary);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-hero);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-main);
  line-height: 1.25;
  letter-spacing: -0.025em;
  max-width: 1100px;
}

section[id] {
  scroll-margin-top: 110px;
}

/* ==========================================================================
   Scroll Indicator Component
   ========================================================================== */
.scroll-indicator {
  padding-top: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: 2rem;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-indicator.faded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.scroll-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  cursor: pointer;
  color: var(--color-text-secondary);
}

.scroll-icon {
  width: 18px;
  height: 18px;
  stroke-width: 2;
  color: var(--color-text-secondary);
  transition: transform var(--transition-fast);
}

.scroll-text {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

@keyframes scrollBounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(8px);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .scroll-link {
    animation: scrollBounce 1.2s cubic-bezier(0.45, 0, 0.15, 1) 3;
  }
}

/* ==========================================================================
   Featured Work Section Component (Fluid)
   ========================================================================== */
.featured-work-section {
  padding-top: clamp(2.5rem, 4vw, 3.5rem);
  padding-bottom: clamp(2.5rem, 4vw, 4rem);
}

.section-title {
  font-family: var(--font-body);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: -0.025em;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.projects-grid {
  row-gap: var(--grid-gutter);
}

.project-card {
  display: block;
  text-decoration: none;
  border-radius: clamp(18px, 2vw, 24px);
  overflow: hidden;
  position: relative;
  background-color: var(--color-surface-subtle);
  transition: transform var(--transition-fast);
  cursor: pointer;
}

.project-img-wrapper {
  width: 100%;
  height: clamp(260px, 30vw, 420px);
  overflow: hidden;
  position: relative;
  border-radius: clamp(18px, 2vw, 24px);
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  border-radius: clamp(18px, 2vw, 24px);
  transform: scale(1.08);
  transition: transform var(--transition-smooth);
}

.project-card:hover .project-img,
.project-card:focus-visible .project-img {
  transform: scale(1.14);
}

/* Modifier: placeholder card for a case study not published yet. On mobile it shrinks to a slim divider band. */
.project-card--placeholder {
  cursor: default;
}

.project-card--placeholder .project-img-wrapper {
  background: url('../images/footer.svg') center bottom / cover no-repeat;
}

@media (max-width: 768px) {
  .project-card--placeholder .project-img-wrapper {
    height: 72px;
  }
}

/* Modifier: show image in full without cropping (e.g. persona cards, diagrams) */
.project-img-wrapper--full {
  height: auto;
  overflow: visible;
}

.project-img--full {
  height: auto;
  object-fit: contain;
  transform: none;
  transition: none;
}

/* Modifier: square corners so edge-to-edge UI screens are not clipped (e.g. wireframe strips) */
.project-img--square {
  border-radius: 0;
}

.project-overlay {
  position: absolute;
  inset: 0;
  background-color: var(--color-primary-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-radius: clamp(18px, 2vw, 24px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-smooth),
              visibility var(--transition-smooth);
  z-index: 2;
}

.project-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.project-title {
  font-family: var(--font-body);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  line-height: 1.25;
  margin-bottom: 0.6rem;
  letter-spacing: -0.02em;
}

.project-area {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.project-card:hover .project-overlay,
.project-card:focus .project-overlay,
.project-card:focus-visible .project-overlay {
  opacity: 1;
  visibility: visible;
}

/* ==========================================================================
   Technologies & Tools Section Component (Fluid)
   ========================================================================== */
.tools-section {
  padding-top: clamp(2.5rem, 4vw, 3.5rem);
  padding-bottom: clamp(2.5rem, 4vw, 4rem);
}

.tools-grid {
  row-gap: var(--grid-gutter);
}

.tool-card {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 20px;
  padding: clamp(1.25rem, 2.5vw, 1.85rem);
  box-shadow: var(--shadow-card-subtle);
  height: 100%;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
              background-color var(--transition-smooth), border-color var(--transition-fast),
              color var(--transition-smooth);
}

.tool-card:has(a):not(:has(.education-header)):hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(179, 50, 0, 0.08);
}

.tool-card-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.tool-icon {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
  stroke-width: 2;
}

.tool-card-title {
  font-family: var(--font-body);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-main);
  letter-spacing: -0.015em;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
}

.tool-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-main);
  background-color: var(--color-surface-tag);
  padding: 0.45rem 1rem;
  border-radius: 100px;
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth),
              color var(--transition-smooth);
}

.tool-tag-icon {
  width: 16px;
  height: 16px;
  stroke-width: 2;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.tool-tag-neutral {
  background-color: var(--color-surface-tag);
  border: 1px solid var(--color-card-border);
  color: var(--color-text-main);
  font-weight: var(--font-weight-medium);
}

.tool-card:hover .tool-tag {
  background-color: var(--color-accent-yellow);
  color: var(--color-text-main);
}

.tool-card:hover .tool-tag-icon {
  color: var(--color-primary);
}

/* ==========================================================================
   Contact & Footer Component (Fluid Responsive)
   ========================================================================== */
.footer-wrapper {
  position: relative;
  width: 100%;
  padding-top: clamp(2.5rem, 4vw, 3.5rem);
  padding-bottom: clamp(2.5rem, 4vw, 3.5rem);
  margin-top: 0;
  overflow: hidden;
}

.footer-bg-banner {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60%;
  z-index: 1;
  overflow: hidden;
}

.footer-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: bottom center;
  display: block;
}

.footer-card-container {
  position: relative;
  z-index: 2;
}

.contact-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 28px;
  padding: clamp(1.75rem, 4vw, 3.25rem) clamp(1.5rem, 4vw, 3.5rem) clamp(1.5rem, 3.5vw, 2.5rem) clamp(1.5rem, 4vw, 3.5rem);
  box-shadow: var(--shadow-contact-card);
}

.contact-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 3rem);
  width: 100%;
}

.contact-card-left {
  flex: 1;
  max-width: 560px;
  text-align: left;
}

.contact-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: -0.025em;
  margin-bottom: 0.85rem;
  line-height: 1.1;
}

.contact-subtitle {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-main);
  line-height: 1.65;
  margin-bottom: 0;
}

.contact-card-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1.25rem;
  text-align: right;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.5rem;
  margin-right: -0.5rem;
  min-height: 44px;
  font-family: var(--font-body);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-main);
  text-decoration: underline;
  text-decoration-color: var(--color-primary);
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
  margin-bottom: 0;
  border-radius: 6px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.contact-email-icon {
  width: 20px;
  height: 20px;
  stroke-width: 2.2;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

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

.contact-email:hover .contact-email-icon {
  transform: translate(3px, -3px);
}

.cv-download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 48px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  padding: 0.85rem 1.65rem;
  border-radius: 100px;
  text-decoration: none;
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-primary-btn);
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast);
  cursor: pointer;
}

.cv-download-btn:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary-btn-hover);
}

.cv-download-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
}

:is(.cv-download-btn, .btn-secondary) :is(svg, [data-lucide], .lucide, i),
.cv-btn-icon {
  width: 20px;
  height: 20px;
  stroke-width: 2.2;
  color: inherit;
  stroke: currentColor;
  fill: none;
  display: inline-block;
  vertical-align: middle;
}

:is(.cv-download-btn, .btn-secondary).btn-sm :is(svg, [data-lucide], .lucide, i) {
  width: 18px;
  height: 18px;
}

.hero-actions-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
}

/* Secondary Button Variant Component */
.btn-secondary,
.cv-download-btn.btn-secondary {
  background-color: var(--color-bg);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  box-shadow: 0 4px 14px rgba(179, 50, 0, 0.15);
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast);
}

.btn-secondary:hover,
.cv-download-btn.btn-secondary:hover {
  background-color: var(--color-primary-muted);
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(179, 50, 0, 0.20);
}

:is(.btn-secondary, .cv-download-btn.btn-secondary) :is(svg, [data-lucide], .lucide, i) {
  color: var(--color-primary);
  stroke: currentColor;
  fill: none;
}

.contact-card-hr {
  border: 0;
  height: 1px;
  background-color: var(--color-divider);
  margin-top: 2.25rem;
  margin-bottom: 1.75rem;
  opacity: 1;
}

.site-footer {
  padding-top: clamp(1.5rem, 2.5vw, 2rem);
  padding-bottom: clamp(1.75rem, 3vw, 2.5rem);
  border-top: 1px solid var(--color-divider);
  margin-top: clamp(1rem, 2vw, 1.5rem);
}

.contact-card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.copyright-text {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-secondary);
}

.social-links {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.social-links li {
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-flex;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-surface-tag);
  border: 1px solid var(--color-card-border);
  text-decoration: none;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.social-btn:hover {
  background-color: var(--color-accent-yellow);
  border-color: var(--color-accent-yellow);
  transform: translateY(-3px);
}

.social-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 50%;
}

.social-icon {
  width: 20px;
  height: 20px;
  display: block;
  object-fit: contain;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.social-btn:hover .social-icon {
  transform: scale(1.18) rotate(-6deg);
}

/* ==========================================================================
   About Me Page Component Styles (Fluid)
   ========================================================================== */
.about-hero-section {
  padding-top: clamp(2.5rem, 5vw, 3.5rem);
  padding-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.about-hero-section .grid-12 {
  align-items: center;
}

.about-hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.about-lead-desc {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  line-height: 1.75;
  color: var(--color-text-main);
  margin-top: 1.25rem;
  font-weight: var(--font-weight-regular);
}

.about-social-links {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: 1.75rem;
  flex-wrap: wrap;
}

.about-social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.65rem 1.35rem;
  border-radius: 100px;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: background-color var(--transition-fast),
              transform 0.3s cubic-bezier(0.25, 1, 0.5, 1),
              box-shadow var(--transition-fast);
}

.about-social-icon {
  width: 20px;
  height: 20px;
  filter: brightness(0) invert(1);
  display: block;
  object-fit: contain;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.about-social-btn:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(179, 50, 0, 0.30);
}

.about-social-btn:hover .about-social-icon {
  transform: scale(1.18) rotate(-6deg);
}

.about-social-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.about-hero-img-col {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  width: 100%;
}

.about-portrait-wrapper {
  width: 100%;
  max-width: 340px;
  aspect-ratio: 3.5 / 4;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--color-card-border);
}

.about-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.ux-skill-desc {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* Education Timeline & Cards */
.education-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}

.education-degree {
  font-family: var(--font-body);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-main);
  margin-bottom: 0.25rem;
}

.education-institution {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
}

.education-status-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-main);
  background-color: var(--color-accent-yellow);
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
}

.education-status-badge.completed {
  background-color: var(--color-badge-completed-bg);
  color: var(--color-badge-completed-text);
}

.education-desc {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   Responsive Structural Layout Overrides (For Smaller Screens)
   ========================================================================== */
@media (max-width: 1024px) {
  .project-img-wrapper {
    height: clamp(260px, 35vw, 360px);
  }
}

@media (max-width: 768px) {
  .grid-12 {
    grid-template-columns: repeat(4, 1fr);
  }

  .col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12,
  .project-card,
  .tool-card {
    grid-column: span 4;
    width: 100%;
  }

  .contact-card-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .contact-card-left {
    max-width: 100%;
  }

  .contact-card-right {
    align-items: flex-start;
    text-align: left;
    width: 100%;
    gap: 1.15rem;
  }

  .contact-email {
    margin-right: 0;
    word-break: break-all;
  }

  .cv-download-btn {
    width: 100%;
  }

  .contact-card-bottom {
    flex-direction: column-reverse;
    align-items: center;
    text-align: center;
    gap: 1.25rem;
  }

  .about-portrait-wrapper {
    max-width: 100%;
  }

  .education-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* Accessible Permanent Overlay for Project Cards on Mobile & Touch Devices */
@media (max-width: 768px), (hover: none) {
  .project-overlay {
    opacity: 1;
    visibility: visible;
    background: linear-gradient(
      to top,
      rgba(30, 30, 30, 0.95) 0%,
      rgba(30, 30, 30, 0.85) 18%,
      rgba(30, 30, 30, 0.68) 35%,
      rgba(30, 30, 30, 0.48) 50%,
      rgba(30, 30, 30, 0.28) 64%,
      rgba(30, 30, 30, 0.12) 78%,
      rgba(30, 30, 30, 0.03) 89%,
      rgba(30, 30, 30, 0) 100%
    );
    align-items: flex-end;
    justify-content: flex-start;
    padding: clamp(1.25rem, 4vw, 1.75rem);
    text-align: left;
  }

  .project-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    width: 100%;
  }

  .project-title {
    font-size: var(--font-size-lg);
    color: var(--color-white);
    margin-bottom: 0.25rem;
    text-align: left;
    width: 100%;
  }

  .project-area {
    font-size: var(--font-size-xs);
    color: var(--color-accent-yellow);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.08em;
    text-align: left;
    width: 100%;
  }
}

/* ==========================================================================
   Dot Process Flow Component (Horizontal & Vertical Dot Stepper)
   ========================================================================== */
.about-lead-desc + .dot-process-flow {
  margin-top: 2rem;
}

.dot-process-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  margin-top: 2rem;
  margin-bottom: 2.25rem;
  position: relative;
}

.dot-process-flow::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 8px;
  right: 8px;
  height: 2px;
  background-color: var(--color-divider);
  z-index: 1;
}

.dot-step-item {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
}

.dot-header-node {
  margin-bottom: 1rem;
}

.dot-node {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-bg);
  flex-shrink: 0;
}

.dot-step-title {
  font-family: var(--font-body);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-main);
  margin-bottom: 0.65rem;
}

@media (max-width: 768px) {
  .dot-process-flow {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }
  .dot-process-flow::before {
    top: 11px;
    bottom: 11px;
    left: 10px;
    right: auto;
    width: 2px;
    height: auto;
  }
  .dot-step-item {
    padding-left: 2.75rem;
  }
  .dot-header-node {
    position: absolute;
    left: 0;
    top: 0;
  }
}

/* LearnCode case study specific layout: vertical flow for multi-step process */
.learncode-page .dot-process-flow {
  grid-template-columns: 1fr;
  gap: 2.25rem;
}

.learncode-page .dot-process-flow::before {
  top: 11px;
  bottom: 11px;
  left: 10px;
  right: auto;
  width: 2px;
  height: auto;
}

.learncode-page .dot-step-item {
  padding-left: 2.75rem;
  position: relative;
}

.learncode-page .dot-header-node {
  position: absolute;
  left: 3px;
  top: 4px;
  margin-bottom: 0;
}

.learncode-page .dot-step-title {
  margin-top: 0;
  line-height: 1.3;
}

/* ==========================================================================
   Case Study Component Styles
   ========================================================================== */

.case-study-tags-margin {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: clamp(2.5rem, 4.5vw, 3.75rem);
}

.case-study-caption {
  margin-top: 1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.improvement-row {
  margin-top: clamp(2.5rem, 4vw, 4rem);
  margin-bottom: clamp(2.5rem, 4vw, 4rem);
  align-items: center;
}

.project-img-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(0.75rem, 2vw, 1.5rem);
  align-items: center;
}

/* Paired images stack in one column on small phones */
@media (max-width: 480px) {
  .project-img-grid {
    grid-template-columns: 1fr;
  }
}

.project-img-grid-3 {
  display: grid;
  grid-template-columns: 1.5fr 1.1fr 0.8fr;
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: center;
  justify-items: center;
}

.project-img-grid-3 .project-img-wrapper {
  height: clamp(240px, 28vw, 380px);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-img-grid-3 .project-img {
  max-height: 100%;
  height: auto;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  object-position: center;
}

@media (max-width: 768px) {
  .project-img-grid-3 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

.improvement-row .project-img-wrapper {
  height: auto;
}

.improvement-row .project-img {
  height: auto;
  width: 100%;
  object-fit: contain;
  object-position: center;
}

/* Paired images never upscale beyond their native size */
.improvement-row .project-img-grid .project-img {
  width: auto;
  max-width: 100%;
  margin-inline: auto;
}

/* Crop modifiers: single-image improvements share the standard size/aspect ratio (admision.webp: 802x450) */
.improvement-row .project-img--crop {
  aspect-ratio: 802 / 450;
  object-fit: cover;
}

.improvement-row .project-img--crop-top {
  object-position: top center;
}

.improvement-row .project-img--crop-bottom {
  object-position: center bottom;
}

/* Improvement rows (tablet and below): text takes the full row and the images sit beneath it */
@media (max-width: 1024px) {
  .improvement-row .col-7,
  .improvement-row .col-5 {
    grid-column: 1 / -1;
  }

  .improvement-row .col-5 > .project-img-wrapper {
    max-width: 560px;
    margin-inline: auto;
  }
}

.case-study-subtitle {
  font-family: var(--font-body);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-main);
  margin-top: 1.75rem;
  margin-bottom: 1rem;
}

.tool-card-list {
  list-style: disc;
  padding-left: 1.15rem;
  margin: 0;
}

.tool-card-list li {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.tool-card-list li:last-child {
  margin-bottom: 0;
}

.section-title + .about-lead-desc {
  margin-top: 0.5rem;
}

.case-study-subtitle + .about-lead-desc {
  margin-top: 0.5rem;
}

.case-study-subtitle + .strategy-list {
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
}

.about-lead-desc + .strategy-list {
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
}

ul.strategy-list {
  list-style: disc;
  padding-left: 1.25rem;
  margin: 0;
}

ol.strategy-list {
  list-style: decimal;
  padding-left: 1.25rem;
  margin: 0;
}

ol.strategy-list li::marker {
  font-weight: var(--font-weight-bold);
  color: var(--color-text-main);
}

.strategy-list li {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  line-height: 1.7;
  color: var(--color-text-main);
  margin-bottom: 0.65rem;
}

.strategy-label {
  color: var(--color-text-main);
  font-weight: var(--font-weight-semibold);
}

.overview-card {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-card-border);
  border-radius: 24px;
  padding: clamp(1.85rem, 4vw, 3rem);
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.overview-grid > div:nth-child(2) {
  padding-left: clamp(0.75rem, 2vw, 1.5rem);
  padding-right: clamp(0.75rem, 2vw, 1.5rem);
}

@media (max-width: 900px) {
  .overview-grid {
    grid-template-columns: 1fr;
  }
  .overview-grid > div:nth-child(2) {
    padding-left: 0;
    padding-right: 0;
  }
}

.overview-item-title {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 0.65rem;
}

.overview-item-desc {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  color: var(--color-text-main);
  line-height: 1.7;
}

.insight-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-card-border);
  border-left: 4px solid var(--color-primary);
  border-radius: 16px;
  padding: clamp(1.15rem, 2.5vw, 1.5rem);
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.insight-text {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: var(--color-text-main);
}

.case-study-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  padding-top: clamp(1rem, 2vw, 1.5rem);
  padding-bottom: clamp(0.75rem, 1.5vw, 1.25rem);
  flex-wrap: wrap;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: clamp(0.5rem, 1vw, 1rem);
}

/* Coming Soon Component Styles */
.coming-soon-main {
  min-height: calc(75vh - 170px);
  display: flex;
  align-items: center;
}

.coming-soon-section {
  padding-top: clamp(2rem, 5vw, 4rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  width: 100%;
}

.coming-soon-content {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.coming-soon-icon-wrapper {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.coming-soon-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.coming-soon-title {
  font-size: var(--font-size-3xl);
  margin-bottom: 1rem;
}

.coming-soon-desc {
  margin-top: 0;
  margin-bottom: 2.25rem;
  color: var(--color-text-secondary);
}

.coming-soon-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.coming-soon-footer {
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
  border-top: 1px solid var(--color-divider);
  margin-top: 2rem;
}

/* ==========================================================================
   Dark Mode Contextual Overrides & Smooth Theme Transitions
   ========================================================================== */

/* Smooth Theme Switching Transitions (disabled if prefers-reduced-motion) */
body,
.contact-card,
.overview-card,
.insight-card {
  transition: background-color var(--transition-smooth),
              border-color var(--transition-smooth),
              color var(--transition-smooth);
}


/* 1. Footer Social Icons & Buttons in Dark Mode */
/* GitHub and LinkedIn icons turn white in footer */
:is([data-theme="dark"], :root:not([data-theme="light"])) .social-icon:not([src*="kaggle"]) {
  filter: brightness(0) invert(1);
}

/* Kaggle icon preserves its original brand color (#20beff) */
:is([data-theme="dark"], :root:not([data-theme="light"])) .social-icon[src*="kaggle"] {
  filter: none;
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .social-btn {
  background-color: var(--color-surface-tag);
  border-color: var(--color-card-border);
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .social-btn:hover {
  background-color: var(--color-primary-muted);
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .social-btn:hover .social-icon {
  transform: scale(1.18) rotate(-6deg);
}

/* 2. About Me Hero Social Pill Buttons in Dark Mode */
/* Orange button with high-contrast dark text and dark icons */
:is([data-theme="dark"], :root:not([data-theme="light"])) .about-social-btn {
  background-color: var(--color-primary);
  color: var(--color-text-dark);
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .about-social-btn:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-text-dark);
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(255, 122, 69, 0.30);
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .about-social-btn:hover .about-social-icon {
  transform: scale(1.18) rotate(-6deg);
}

/* GitHub and LinkedIn icons inside About Me buttons turn black */
:is([data-theme="dark"], :root:not([data-theme="light"])) .about-social-icon:not([src*="kaggle"]) {
  filter: brightness(0);
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .about-social-icon[src*="kaggle"] {
  filter: none;
}

/* 3. Secondary Buttons & Banner in Dark Mode */
:is([data-theme="dark"], :root:not([data-theme="light"])) .btn-secondary:hover,
:is([data-theme="dark"], :root:not([data-theme="light"])) .cv-download-btn.btn-secondary:hover {
  background-color: var(--color-primary-muted);
  color: var(--color-primary);
}

:is([data-theme="dark"], :root:not([data-theme="light"])) .footer-bg-banner,
:is([data-theme="dark"], :root:not([data-theme="light"])) .project-card--placeholder .project-img-wrapper {
  opacity: 0.7;
}

/* 4. Project Area Label in Dark Mode (High Contrast on Card Overlay) */
:is([data-theme="dark"], :root:not([data-theme="light"])) .project-area {
  color: var(--color-primary-hover);
}