/* 
   ZWO16 — Premium CSS Stylesheet
   Designed with Swiss Minimalist Aesthetics & Clean Engineering Typography
*/

/* --- Self-hosted fonts (DSGVO: no Google CDN request, no IP transfer) --- */
/* Variable fonts: one file covers the full weight range. */
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 300 900;
  font-display: swap;
  src: url('fonts/outfit-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 300 900;
  font-display: swap;
  src: url('fonts/outfit-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('fonts/jakarta-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('fonts/jakarta-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* --- CSS Variables --- */
:root {
  /* Color Palette - Swiss Light Mode */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #F1F5F9;
  --text-primary: #0F172A;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  
  /* Brand Accents */
  --brand-accent: #A2BEA9;       /* Whirlybird 309 (Elegant Architectural Sage) */
  --brand-accent-hover: #7FA087; /* Muted Darker Sage (High Contrast & Legibility) */
  --brand-accent-light: rgba(162, 190, 169, 0.15);
  --border-color: #E2E8F0;
  --border-hover: #CBD5E1;
  
  /* Glassmorphism Styles */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(15, 23, 42, 0.08);
  --glass-shadow: rgba(15, 23, 42, 0.03) 0px 8px 30px;
  
  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  
  /* Transitions */
  --transition-smooth: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-fast: all 0.2s ease;
  
  /* Viewport Margins */
  --frame-width: 1.5rem;
}

@media (max-width: 768px) {
  :root {
    --frame-width: 0.75rem;
  }
}

/* --- Base Resets & Layout --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  background-color: var(--bg-primary);
}

/* --- Viewfinder Frame --- */
.viewfinder-frame {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: var(--frame-width) solid var(--bg-primary);
  pointer-events: none;
  z-index: 99;
}

.vf-corner {
  position: absolute;
  width: 15px;
  height: 15px;
  border: 1px solid var(--text-light);
  pointer-events: none;
}

.vf-tl { top: calc(var(--frame-width) + 10px); left: calc(var(--frame-width) + 10px); border-right: none; border-bottom: none; }
.vf-tr { top: calc(var(--frame-width) + 10px); right: calc(var(--frame-width) + 10px); border-left: none; border-bottom: none; }
.vf-bl { bottom: calc(var(--frame-width) + 10px); left: calc(var(--frame-width) + 10px); border-right: none; border-top: none; }
.vf-br { bottom: calc(var(--frame-width) + 10px); right: calc(var(--frame-width) + 10px); border-left: none; border-top: none; }

/* --- Typographical System --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 700;
}

p {
  line-height: 1.65;
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

p strong {
  color: var(--text-primary);
}

.accent {
  color: var(--brand-accent);
}

.italic {
  font-style: italic;
}

.block {
  display: block;
}

.lead {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-muted);
  font-weight: 400;
  max-width: 48rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--brand-accent);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

/* --- Helper Classes --- */
.container {
  width: 100%;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 2.5rem;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }
}

.section {
  padding: 8rem 0;
  position: relative;
}

@media (max-width: 768px) {
  .section {
    padding: 5rem 0;
  }
}

.light-bg { background-color: var(--bg-primary); }
.grey-bg { background-color: var(--bg-secondary); }
.border-bottom { border-bottom: 1px solid var(--border-color); }
.border-top { border-top: 1px solid var(--border-color); }
.mt-2 { margin-top: 1rem !important; }
.mt-3 { margin-top: 1.5rem !important; }
.mt-4 { margin-top: 2rem !important; }
.mt-5 { margin-top: 3rem !important; }
.mb-4 { margin-bottom: 2rem !important; }
.mb-5 { margin-bottom: 3rem !important; }
.flex-between { display: flex; justify-content: space-between; align-items: flex-end; gap: 2rem; flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }

@media (max-width: 992px) {
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border: 1px solid var(--text-primary);
  padding: 0.95rem 2rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border-radius: 2px;
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--brand-accent);
  z-index: -1;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.btn-primary:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

.btn-primary:hover {
  border-color: var(--brand-accent);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.15);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
  padding: 0.95rem 2rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border-radius: 2px;
  transition: var(--transition-fast);
}

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

.btn-text {
  background: none;
  border: none;
  color: var(--brand-accent);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  padding: 0.25rem 0;
  transition: var(--transition-fast);
}

.btn-text::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--brand-accent);
  transform: scaleX(0.3);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.btn-text:hover::after {
  transform: scaleX(1);
}

.btn-text:hover {
  color: var(--brand-accent-hover);
}

.btn-icon {
  width: 18px;
  height: 18px;
  margin-right: 8px;
}

/* --- Preloader --- */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-primary);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.8s;
}

.preloader-wrap {
  text-align: center;
  margin-bottom: 2rem;
}

.preloader-logo {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: -2px;
  color: var(--text-primary);
}

.preloader-sub {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--text-light);
  margin-top: 0.5rem;
}

.preloader-counter-wrap {
  margin-top: 1rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text-muted);
}

.preloader-counter {
  font-weight: 700;
  color: var(--text-primary);
}

.preloader-bar-wrap {
  width: 200px;
  height: 2px;
  background-color: var(--border-color);
  overflow: hidden;
  position: relative;
}

.preloader-bar {
  height: 100%;
  width: 0;
  background-color: var(--brand-accent);
  transition: width 0.1s ease-out;
}

.preloader-loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* --- Floating Navbar --- */
.navbar {
  position: fixed;
  top: var(--frame-width);
  left: var(--frame-width);
  right: var(--frame-width);
  height: 5.5rem;
  background-color: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  z-index: 98;
  transition: var(--transition-smooth);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 2.5rem;
}

@media (max-width: 768px) {
  .navbar-container {
    padding: 0 1.5rem;
  }
  .navbar {
    height: 4.5rem;
  }
}

.logo {
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  transition: var(--transition-fast);
}

.logo svg {
  width: 145px; /* Confident, premium brand sizing */
  height: auto;
  display: block;
  transition: var(--transition-fast);
}

@media (max-width: 768px) {
  .logo svg {
    width: 125px; /* Adjusted mobile header size */
  }
}

.logo:hover {
  color: var(--brand-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--text-primary);
  position: relative;
  padding: 0.5rem 0;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--brand-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

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

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 6px;
  z-index: 101;
  padding: 0.5rem;
}

.menu-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-fast);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  .nav-links {
    display: none;
  }
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-primary);
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

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

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.mobile-link {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

/* Hamburger animation */
.menu-toggle.active .menu-toggle-line:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.menu-toggle.active .menu-toggle-line:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 5.5rem;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 1;
  transform: scale(1.02);
  animation: slowZoom 24s infinite alternate ease-in-out;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.8) 45%, rgba(255, 255, 255, 0.25) 100%);
  z-index: 2;
}

@keyframes slowZoom {
  0% { transform: scale(1.02); }
  100% { transform: scale(1.08); }
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 60rem;
  padding-left: 2.5rem;
}

@media (max-width: 992px) {
  .hero-overlay {
    background: linear-gradient(0deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.9) 65%, rgba(255, 255, 255, 0.5) 100%);
  }
  .hero-content {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

.hero-title {
  margin-bottom: 1.5rem;
}

.hero-positioning {
  max-width: 36rem;
}

.lead-text {
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  color: var(--text-muted);
  line-height: 1.6;
  font-weight: 400;
}

.hero-sub {
  margin-top: 3rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  gap: 2rem;
  align-items: center;
  flex-wrap: wrap;
}

.sub-label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.25em;
  color: var(--text-light);
}

.bullet-list-horizontal {
  display: flex;
  gap: 2rem;
  list-style: none;
  flex-wrap: wrap;
}

.bullet-list-horizontal li {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bullet-list-horizontal li::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: var(--brand-accent);
  border-radius: 50%;
}

.scroll-indicator {
  position: absolute;
  bottom: 4rem;
  left: 2.5rem;
  z-index: 2;
}

.scroll-mouse {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-light);
  border-radius: 12px;
  position: relative;
  transition: var(--transition-fast);
}

.scroll-wheel {
  display: block;
  width: 4px;
  height: 8px;
  background-color: var(--brand-accent);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 2s infinite ease-out;
}

@keyframes scrollWheel {
  0% { opacity: 0; transform: translate(-50%, 0); }
  30% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, 14px); }
}

.scroll-mouse:hover {
  border-color: var(--brand-accent);
}

/* --- Trust Metrics Bar --- */
.trust-metrics-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 3rem;
}

@media (max-width: 992px) {
  .trust-metrics-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

@media (max-width: 576px) {
  .trust-metrics-bar {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-num {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.metric-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 0.5rem;
}

/* --- About Grid & Quote --- */
.accent-text {
  font-size: 1.25rem;
  color: var(--text-primary);
  line-height: 1.6;
  font-weight: 500;
  margin-bottom: 1.5rem;
}

/* Technical CAD Grid Background for About */
#about {
  background-image: 
    linear-gradient(rgba(15, 23, 42, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.025) 1px, transparent 1px);
  background-size: 30px 30px;
  background-position: center top;
}

.quote-block-wrap {
  position: relative;
  width: 100%;
  min-height: 24rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--glass-shadow);
  border-radius: 2px;
}

.quote-block-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 1;
  transition: transform 1.2s cubic-bezier(0.25, 1, 0.5, 1);
}

.quote-block-wrap:hover .quote-block-bg {
  transform: scale(1.04);
}

.quote-block-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 2;
}

.quote-block {
  position: relative;
  z-index: 3;
  width: 85%;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-left: 3px solid var(--brand-accent);
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.quote-icon {
  position: absolute;
  top: 1rem;
  left: 2rem;
  font-family: var(--font-heading);
  font-size: 8rem;
  font-weight: 900;
  color: var(--border-color);
  line-height: 0;
  pointer-events: none;
}

.quote-text {
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 500;
  font-style: italic;
  line-height: 1.5;
  color: var(--text-primary);
  position: relative;
  z-index: 1;
  margin-bottom: 1.5rem;
}

.quote-author {
  font-size: 0.9rem;
  font-style: normal;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* --- Principles Section --- */
.principles-section {
  border-top: 1px solid var(--border-color);
  padding-top: 5rem;
}

.principles-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 2.5rem !important;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-color);
  border-left: 1px solid var(--border-color);
}

@media (max-width: 992px) {
  .principles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .principles-grid {
    grid-template-columns: 1fr;
  }
}

.principles-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 3rem 2.25rem;
  background-color: var(--bg-primary);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.principles-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--brand-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  z-index: 5;
}

.principles-card:hover {
  background-color: rgba(162, 190, 169, 0.03); /* Whirlybird subtle tint */
  box-shadow: inset 0 0 20px rgba(162, 190, 169, 0.05), var(--glass-shadow);
}

.principles-card:hover::before {
  transform: scaleX(1);
}

.principles-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.principles-number {
  font-family: monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text-light);
  transition: var(--transition-fast);
}

.principles-card:hover .principles-number {
  color: var(--brand-accent-hover);
}

.principles-icon {
  width: 44px;
  height: 44px;
  color: var(--text-light);
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.principles-card:hover .principles-icon {
  color: var(--brand-accent-hover);
  transform: scale(1.05);
}

.svg-accent {
  transition: stroke 0.3s ease;
}

.principles-card:hover .svg-accent {
  stroke: var(--brand-accent-hover);
}

.principles-card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.25;
  transition: var(--transition-fast);
}

.principles-card:hover .principles-card-title {
  color: var(--text-primary);
}

.principles-card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
  flex-grow: 1;
}

/* CAD corner tick markings inside cards */
.principles-corner-tick {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--border-color);
  border-left: 1px solid var(--border-color);
  pointer-events: none;
  opacity: 0.5;
  transition: var(--transition-fast);
}

.principles-card::after {
  content: '';
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 8px;
  height: 8px;
  border-bottom: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  pointer-events: none;
  opacity: 0.5;
  transition: var(--transition-fast);
}

.principles-card:hover .principles-corner-tick {
  border-color: var(--brand-accent);
  opacity: 1;
}

.principles-card:hover::after {
  border-color: var(--brand-accent);
  opacity: 1;
}

/* Animation triggers on hover */
@keyframes svgRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.svg-orbit {
  transform-origin: 50px 50px;
}

.principles-card:hover .svg-orbit {
  animation: svgRotate 12s linear infinite;
}

@keyframes svgTilt {
  0% { transform: rotate(0deg); }
  25% { transform: rotate(4deg); }
  75% { transform: rotate(-4deg); }
  100% { transform: rotate(0deg); }
}

.svg-beam {
  transform-origin: 50px 46px;
}

.principles-card:hover .svg-beam {
  animation: svgTilt 4s ease-in-out infinite;
}

/* --- Projects Section --- */
.project-filters {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.project-filter-btn {
  background: none;
  border: 1px solid var(--border-color);
  padding: 0.6rem 1.4rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  border-radius: 20px;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

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

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

/* Carousel Controls & Styling */
.projects-controls-wrap {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .projects-controls-wrap {
    width: 100%;
    justify-content: space-between;
    margin-top: 1rem;
  }
}

.carousel-controls {
  display: flex;
  gap: 0.75rem;
}

.carousel-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  padding: 0;
}

.carousel-btn svg {
  width: 1.25rem;
  height: 1.25rem;
}

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

/* Horizontal scroll layout for ZWO16 projects */
.projects-carousel-outer {
  width: 100%;
  overflow: hidden;
  position: relative;
}

.projects-carousel {
  display: flex;
  gap: 2rem;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 1rem 0 2rem 0;
}

.projects-carousel::-webkit-scrollbar {
  height: 4px;
}

.projects-carousel::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 10px;
}

.projects-carousel::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 10px;
}

.projects-carousel::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

.project-card {
  flex: 0 0 calc(33.333% - 1.333rem); /* 3 cards on desktop */
  min-width: 360px;
  scroll-snap-align: start;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

@media (max-width: 1024px) {
  .project-card {
    flex: 0 0 calc(50% - 1rem); /* 2 cards on tablet */
    min-width: 320px;
  }
}

@media (max-width: 680px) {
  .project-card {
    flex: 0 0 100%; /* 1 card on mobile */
    min-width: 270px;
  }
}

.project-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 10px 40px rgba(15, 23, 42, 0.05);
  transform: translateY(-4px);
}

.project-img-wrap {
  width: 100%;
  height: 24rem;
  overflow: hidden;
  position: relative;
  background-color: var(--bg-tertiary);
}

@media (max-width: 576px) {
  .project-img-wrap {
    height: 16rem;
  }
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.25, 1, 0.5, 1);
}

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

.project-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 0.4rem 0.8rem;
  border-radius: 2px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  text-transform: uppercase;
}

.project-info {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-meta {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.project-card-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.project-desc {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* --- Animated Engineering Diagrams --- */
.superpower-wrap {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.superpower-header {
  max-width: 52rem;
}

.superpower-text-block {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 3.5rem;
  margin-top: 4rem !important;
}

@media (max-width: 992px) {
  .superpower-text-block {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 2.5rem;
    margin-top: 3rem !important;
  }
}

.feature-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 1200px) {
  .feature-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .feature-cards {
    grid-template-columns: 1fr;
  }
}

.card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: var(--transition-smooth);
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glass-shadow);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-num {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-light);
}

.card h4 {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* SVG animations */
.tech-diagram-container {
  width: 100%;
  height: 120px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  margin-top: 1rem;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.tech-diagram {
  width: 100%;
  height: 100%;
  color: var(--text-primary);
}

/* Conveyor / Sliding panels animation */
.diag-panel {
  transition: var(--transition-smooth);
}

.card:hover .diag-panel {
  stroke: var(--brand-accent);
}

.card:hover .panel-1 {
  animation: slidePanel 3s infinite linear;
}

.card:hover .panel-2 {
  animation: slidePanel 3s infinite linear;
}

.card:hover .panel-3 {
  animation: slidePanel 3s infinite linear;
}

@keyframes slidePanel {
  0% { transform: translateX(0px); }
  100% { transform: translateX(24px); }
}

/* === Card 02: Crane / Module-Lowering Animation === */
.diag-box {
  transition: stroke 0.3s ease;
}

.card:hover .box-bl {
  stroke: var(--brand-accent);
}

.card:hover .box-top {
  stroke: var(--brand-accent);
}

.card:hover .animate-assembly {
  animation: craneDown 2.4s infinite ease-in-out;
}

.card:hover .diag-line {
  stroke: var(--brand-accent);
  animation: linePulse 2.4s infinite ease-in-out;
}

@keyframes craneDown {
  0%   { transform: translateY(-18px); opacity: 0; }
  15%  { opacity: 1; }
  55%  { transform: translateY(0px);   opacity: 1; }
  80%  { transform: translateY(0px);   opacity: 1; }
  100% { transform: translateY(-18px); opacity: 0; }
}

@keyframes linePulse {
  0%   { opacity: 0; }
  10%  { opacity: 0.6; }
  55%  { opacity: 0.6; }
  80%  { opacity: 0; }
  100% { opacity: 0; }
}

/* === Card 03: 4-Panel Box-Assembly Animation === */
.mod-top, .mod-bottom, .mod-left, .mod-right, .mod-arrows {
  transition: var(--transition-smooth);
}

.card:hover .mod-top {
  stroke: var(--brand-accent);
  animation: modAssembleTop 3s infinite ease-in-out;
}

.card:hover .mod-bottom {
  stroke: var(--brand-accent);
  animation: modAssembleBottom 3s infinite ease-in-out;
}

.card:hover .mod-left {
  stroke: var(--brand-accent);
  animation: modAssembleLeft 3s infinite ease-in-out;
}

.card:hover .mod-right {
  stroke: var(--brand-accent);
  animation: modAssembleRight 3s infinite ease-in-out;
}

.card:hover .mod-arrows {
  stroke: var(--brand-accent);
  animation: modFadeArrows 3s infinite ease-in-out;
}

/* Panels fly IN from far outside → assemble into closed box → hold → fly back out */
@keyframes modAssembleTop {
  0%   { transform: translateY(-28px); opacity: 0; }
  20%  { opacity: 1; }
  45%  { transform: translateY(0px);   opacity: 1; }
  70%  { transform: translateY(0px);   opacity: 1; }
  90%  { opacity: 0.8; }
  100% { transform: translateY(-28px); opacity: 0; }
}

@keyframes modAssembleBottom {
  0%   { transform: translateY(28px);  opacity: 0; }
  20%  { opacity: 1; }
  45%  { transform: translateY(0px);   opacity: 1; }
  70%  { transform: translateY(0px);   opacity: 1; }
  90%  { opacity: 0.8; }
  100% { transform: translateY(28px);  opacity: 0; }
}

@keyframes modAssembleLeft {
  0%   { transform: translateX(-26px);  opacity: 0; }
  20%  { opacity: 1; }
  45%  { transform: translateX(0px);    opacity: 1; }
  70%  { transform: translateX(0px);    opacity: 1; }
  90%  { opacity: 0.8; }
  100% { transform: translateX(-26px);  opacity: 0; }
}

@keyframes modAssembleRight {
  0%   { transform: translateX(26px);   opacity: 0; }
  20%  { opacity: 1; }
  45%  { transform: translateX(0px);    opacity: 1; }
  70%  { transform: translateX(0px);    opacity: 1; }
  90%  { opacity: 0.8; }
  100% { transform: translateX(26px);   opacity: 0; }
}

@keyframes modFadeArrows {
  0%   { opacity: 0.9; }
  40%  { opacity: 0.9; }
  55%  { opacity: 0;   }
  100% { opacity: 0;   }
}

/* update hover rules to use new assembly keyframes */
/* Slabs Exploded Assembly animation */
.diag-slab, .slab-lf, .slab-rf, .slab-cb {
  transition: var(--transition-smooth);
}

.svg-accent-fill {
  transition: fill 0.3s ease, fill-opacity 0.3s ease;
}

.card:hover .svg-accent-fill {
  fill: var(--brand-accent);
  fill-opacity: 0.15;
}

.card:hover .slab-lf {
  stroke: var(--brand-accent);
  animation: explodeLeft 3s infinite ease-in-out;
}

.card:hover .slab-rf {
  stroke: var(--brand-accent);
  animation: explodeRight 3s infinite ease-in-out;
}

.card:hover .slab-cb {
  stroke: var(--brand-accent);
  animation: explodeBack 3s infinite ease-in-out;
}

@keyframes explodeLeft {
  0% { transform: translate(-7px, -15px); opacity: 0; }
  20% { opacity: 1; }
  50% { transform: translate(0px, 0px); opacity: 1; }
  80% { transform: translate(0px, 0px); opacity: 1; }
  100% { transform: translate(-7px, -15px); opacity: 0; }
}

@keyframes explodeRight {
  0% { transform: translate(7px, -12px); opacity: 0; }
  20% { opacity: 1; }
  50% { transform: translate(0px, 0px); opacity: 1; }
  80% { transform: translate(0px, 0px); opacity: 1; }
  100% { transform: translate(7px, -12px); opacity: 0; }
}

@keyframes explodeBack {
  0% { transform: translate(0px, -15px); opacity: 0; }
  20% { opacity: 1; }
  50% { transform: translate(0px, 0px); opacity: 1; }
  80% { transform: translate(0px, 0px); opacity: 1; }
  100% { transform: translate(0px, -15px); opacity: 0; }
}

.large-text {
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text-primary);
}

/* --- Services List --- */
.services-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-color);
}

.service-item {
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.service-header {
  padding: 2.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.service-header h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.service-icon {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 300;
  color: var(--text-light);
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), color 0.3s ease;
}

.service-item:hover .service-header h3 {
  color: var(--brand-accent);
  padding-left: 0.5rem;
}

.service-item:hover .service-icon {
  transform: rotate(45deg);
  color: var(--brand-accent);
}

.service-body {
  display: grid;
  grid-template-rows: 0fr;
  overflow: hidden;
  transition: grid-template-rows 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.service-item:hover .service-body {
  grid-template-rows: 1fr;
}

.service-subgrid {
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  padding-bottom: 3rem;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.service-item:hover .service-subgrid {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .service-subgrid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-bottom: 2rem;
  }
}

.service-card-part {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: 2px;
}

.part-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.service-card-part p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* --- Accordions (C2C Section) --- */
.align-center {
  align-items: center;
}

.accordion-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.accordion-item {
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  transition: var(--transition-smooth);
}

.accordion-item.active {
  border-color: var(--text-primary);
}

.accordion-header {
  width: 100%;
  background: none;
  border: none;
  padding: 1.75rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  text-align: left;
  color: var(--text-primary);
}

.accordion-chevron {
  display: block;
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--text-light);
  border-bottom: 2px solid var(--text-light);
  transform: rotate(45deg);
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.accordion-item.active .accordion-chevron {
  transform: rotate(-135deg);
  border-color: var(--brand-accent);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.accordion-content ul {
  padding: 0 2rem 2rem 2rem;
  list-style: none;
}

.bullet-list-custom li {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 1.5rem;
  line-height: 1.5;
}

.bullet-list-custom li::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: var(--brand-accent);
  border-radius: 50%;
  position: absolute;
  top: 8px;
  left: 0;
}

.bullet-list-custom li strong {
  color: var(--text-primary);
}

/* --- Benefits Section --- */
.benefits-container {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 5rem;
}

@media (max-width: 768px) {
  .benefits-container {
    padding: 3rem 1.5rem;
  }
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 3rem;
}

@media (max-width: 992px) {
  .benefits-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

.benefit-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.benefit-check {
  color: var(--brand-accent);
  font-weight: 900;
  flex-shrink: 0;
}

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

.block {
  display: block;
}

/* --- Contact & Footer --- */
.footer-section {
  background-color: var(--bg-secondary);
}

.contact-info {
  display: flex;
  flex-direction: column;
}

.contact-info h3 {
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.legal-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.info-group h4 {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-light);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.info-group p {
  font-size: 1.05rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.contact-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition-fast);
}

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

.contact-form-container {
  position: relative;
}

/* Modern floating labels contact form */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 576px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

.form-group {
  position: relative;
  margin-bottom: 2rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 0;
  background: none;
  border: none;
  border-bottom: 1px solid var(--border-hover);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.3s ease;
}

.form-group textarea {
  resize: vertical;
}

.form-group label {
  position: absolute;
  top: 1rem;
  left: 0;
  font-size: 1rem;
  color: var(--text-muted);
  pointer-events: none;
  transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), font-size 0.3s ease, color 0.3s ease;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
  transform: translateY(-1.5rem);
  font-size: 0.8rem;
  color: var(--brand-accent);
  font-weight: 700;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom: 1px solid var(--brand-accent);
}

.form-checkbox {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  border: 1px solid var(--border-hover);
  cursor: pointer;
  accent-color: var(--brand-accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.consent-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.inline-link {
  color: var(--text-primary);
  font-weight: 600;
  text-decoration: underline;
  transition: var(--transition-fast);
}

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

/* Animated Success Card */
.form-success-card {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-secondary);
  z-index: 5;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  transition: var(--transition-smooth);
}

.success-icon {
  width: 60px;
  height: 60px;
  color: var(--brand-accent);
  margin-bottom: 1.5rem;
  animation: scaleIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes scaleIn {
  0% { transform: scale(0); }
  100% { transform: scale(1); }
}

.form-success-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.form-success-card p {
  max-width: 24rem;
}

.hidden {
  display: none !important;
}

/* Loader */
.btn-loader {
  width: 16px;
  height: 16px;
  border: 2px solid var(--bg-primary);
  border-bottom-color: transparent;
  border-radius: 50%;
  display: inline-block;
  animation: rotation 1s linear infinite;
  margin-left: 8px;
}

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

/* --- Footer Bottom --- */
.footer-bottom {
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* --- Project Details Drawer --- */
.project-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1000;
  visibility: hidden;
  transition: var(--transition-smooth);
}

.project-drawer.active {
  visibility: visible;
}

.drawer-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.project-drawer.active .drawer-overlay {
  opacity: 1;
}

.drawer-content {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 36rem;
  height: 100%;
  background-color: var(--bg-primary);
  border-left: 1px solid var(--border-color);
  box-shadow: -10px 0 50px rgba(15, 23, 42, 0.08);
  padding: 4rem 3rem;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (max-width: 576px) {
  .drawer-content {
    padding: 3rem 1.5rem;
  }
}

.project-drawer.active .drawer-content {
  transform: translateX(0);
}

.drawer-close {
  position: absolute;
  top: 1.5rem;
  left: 2.5rem;
  font-size: 2.5rem;
  font-weight: 300;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  transition: var(--transition-fast);
}

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

/* Drawer contents styling */
.drawer-img-wrap {
  width: 100%;
  height: 18rem;
  overflow: hidden;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.drawer-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.drawer-title-wrap {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
}

.drawer-meta {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--brand-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.drawer-title {
  font-size: 2rem;
  margin-top: 0.25rem;
}

.drawer-specs {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.drawer-spec-row {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 0.75rem;
}

.drawer-spec-label {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
}

.drawer-spec-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.drawer-body-text {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* --- Scroll Reveal Animations --- */
.reveal-text {
  overflow: hidden;
}

.reveal-text span {
  display: block;
  transform: translateY(100%);
  animation: revealUp 1s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.delay-1 span, .delay-1 {
  animation-delay: 0.2s;
}

.delay-2 span, .delay-2 {
  animation-delay: 0.4s;
}

@keyframes revealUp {
  0% { transform: translateY(100%); }
  100% { transform: translateY(0); }
}

.reveal-fade {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.reveal-fade.active {
  opacity: 1;
  transform: translateY(0);
}