/* Google Fonts: Nunito & Lora */
@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Nunito:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Theme: Palladian & Steel Indigo (Default Light Theme) */
  --bg-primary: #eee9df; /* Palladian Warm White */
  --bg-glow: radial-gradient(circle at center, #ffffff 0%, #eee9df 100%);
  
  --accent-gold: #a35139; /* Truffle Trouble Terracotta / Earthy Red-Brown */
  --accent-gold-rgb: 163, 81, 57;
  --accent-bronze: #2c3b4d; /* Blue Fantastic / Steel Indigo Blue */
  --accent-copper: #ffb162; /* Burning Flame / Bright Orange Gold */
  
  --text-main: #1b2632; /* Abyssal Anchorfish Blue - Deep Navy */
  --text-muted: #2c3b4d; /* Blue Fantastic */
  
  --card-bg: #ffffff;
  --card-border: rgba(44, 59, 77, 0.15);
  
  --font-sans: 'Lora', 'Georgia', serif;
  --font-serif: 'Nunito', 'Arial', sans-serif;
  
  --transition-speed: 0.6s;
}

[data-theme="alabaster"],
.theme-alabaster {
  /* Theme: Oatmeal & Terracotta (Warm Midtone Theme) */
  --bg-primary: #c9c1b1; /* Oatmeal Sand / Light Greige */
  --bg-glow: radial-gradient(circle at center, #eee9df 0%, #c9c1b1 100%);
  --accent-gold: #ffb162; /* Burning Flame */
  --accent-gold-rgb: 255, 177, 98;
  --accent-bronze: #a35139; /* Truffle Trouble */
  --accent-copper: #2c3b4d; /* Blue Fantastic */
  --text-main: #1b2632; /* Abyssal Anchorfish Blue */
  --text-muted: #2c3b4d; /* Blue Fantastic */
  --card-bg: #ffffff;
  --card-border: rgba(163, 81, 57, 0.15);
}

[data-theme="slate"],
.theme-slate {
  /* Theme: Abyssal Anchorfish Dark Mode (Deep Navy & Bright Ochre) */
  --bg-primary: #1b2632; /* Abyssal Anchorfish Blue - Deep Navy */
  --bg-glow: radial-gradient(circle at center, #2c3b4d 0%, #111820 100%); /* Fades into deep shadow */
  --accent-gold: #ffb162; /* Burning Flame for brilliant highlights */
  --accent-gold-rgb: 255, 177, 98;
  --accent-bronze: #a35139; /* Truffle Trouble */
  --accent-copper: #c9c1b1; /* Oatmeal Sand */
  --text-main: #eee9df; /* Palladian Warm White */
  --text-muted: #c9c1b1; /* Oatmeal Sand */
  --card-bg: #23303f; /* Blue Fantastic Tinted Dark Card */
  --card-border: rgba(255, 177, 98, 0.18);
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  background-image: var(--bg-glow);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background var(--transition-speed) cubic-bezier(0.25, 1, 0.5, 1), color var(--transition-speed) ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--card-border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-gold);
}

/* Global Nav Header */
header.site-header {
  z-index: 1000;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 25px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 15px;
  text-decoration: none;
  color: inherit;
}

.mini-brand-icon {
  width: 32px;
  height: 32px;
}

.mini-brand-icon .shape {
  opacity: 1 !important;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 400;
}

.brand-sub {
  font-size: 0.55rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 300;
}

nav.main-nav {
  display: flex;
  gap: 32px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 22px;
  height: 15px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1000;
  padding: 0;
  outline: none;
}

.mobile-menu-toggle span {
  width: 100%;
  height: 1.5px;
  background-color: var(--text-main);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s;
}

.mobile-menu-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 15, 15, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.nav-link {
  font-family: var(--font-serif);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 400;
  cursor: pointer;
  position: relative;
  padding: 6px 0;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--accent-gold);
  transition: width 0.3s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

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

/* Page Section System */
main.site-content {
  flex-grow: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px;
  position: relative;
  z-index: 10;
}

.page-section {
  display: none;
  opacity: 0;
  transform: scale(0.985) translateY(15px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  width: 100%;
}

.page-section.active {
  display: block;
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* Home / Landing Section */
#section-home {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 50px;
  min-height: calc(100vh - 200px);
}

#section-home.active {
  display: flex;
}

.logo-showcase-container {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  perspective: 1000px;
}

.logo-inner {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  transform-style: preserve-3d;
  position: relative;
}

.logo-svg {
  width: 240px;
  height: 240px;
  transform: translateZ(30px);
  transition: transform 0.1s ease-out;
}

.logo-glow {
  position: absolute;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(var(--accent-gold-rgb), 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transform: translateZ(5px);
  transition: opacity 1.5s cubic-bezier(0.25, 1, 0.5, 1), background var(--transition-speed) ease;
}

.draw-active .logo-glow {
  opacity: 1;
}

/* Animated 'Pra' letterform from local file */
.shape {
  opacity: 0;
  transition: fill var(--transition-speed) ease;
}

.top-bar { fill: var(--accent-bronze); }
.pa-loop { fill: var(--accent-gold); }
.stem { fill: var(--accent-copper); }
.diagonal { fill: var(--accent-copper); } /* Matches Ochre Gold */

.draw-active .shape {
  animation-fill-mode: forwards;
  animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
  animation-duration: 1.2s;
}

.draw-active .top-bar {
  animation-name: slideDown;
  animation-delay: 0.2s;
}

.draw-active .pa-loop {
  animation-name: slideRight;
  animation-delay: 0.5s;
}

.draw-active .stem {
  animation-name: slideUp;
  animation-delay: 0.8s;
}

.draw-active .diagonal {
  animation-name: slideUpRight;
  animation-delay: 1.1s;
}

@keyframes slideDown {
  from { transform: translateY(-100px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes slideRight {
  from { transform: translateX(-100px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(100px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes slideUpRight {
  from { transform: translate(-50px, 50px); opacity: 0; }
  to { transform: translate(0, 0); opacity: 1; }
}

.home-intro-text {
  text-align: center;
  max-width: 600px;
  opacity: 0;
  transform: translateY(25px);
  animation: fadeUpWelcome 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.8s forwards;
}

@keyframes fadeUpWelcome {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.home-intro-text h2 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 300;
}

.home-intro-text p {
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  line-height: 1.6;
}

/* About Us Section */
.section-title-wrap {
  margin-bottom: 60px;
}

.section-tag {
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 8px;
  font-weight: 400;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 300;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-text-column {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.about-lead {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-main);
  font-weight: 400;
  border-left: 2px solid var(--accent-gold);
  padding-left: 25px;
}

.about-paragraph {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-muted);
  font-weight: 300;
  text-align: justify;
}

.about-philosophy-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 40px;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
}

.about-philosophy-card::before {
  content: 'प्र';
  position: absolute;
  right: -20px;
  bottom: -40px;
  font-size: 10rem;
  font-family: var(--font-serif);
  color: rgba(var(--accent-gold-rgb), 0.03);
  font-weight: 600;
  pointer-events: none;
}

.philosophy-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 20px;
}

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

.philosophy-item h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.philosophy-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Projects Section */
.portfolio-filter-bar {
  display: flex;
  gap: 15px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 15px;
}

.filter-btn {
  font-family: var(--font-serif);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  padding: 6px 12px;
  transition: color 0.3s;
}

.filter-btn.active, .filter-btn:hover {
  color: var(--accent-gold);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(var(--accent-gold-rgb), 0.25);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.project-visual {
  height: 200px;
  background: linear-gradient(135deg, rgba(var(--accent-gold-rgb), 0.04) 0%, rgba(var(--accent-gold-rgb), 0.01) 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.project-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), filter 0.4s;
  filter: grayscale(40%) contrast(102%);
}

.project-card:hover .project-visual img {
  transform: scale(1.06);
  filter: grayscale(0%) contrast(100%);
}

.project-visual svg {
  width: 60px;
  height: 60px;
  stroke: var(--accent-gold);
  stroke-width: 1;
  opacity: 0.35;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s;
}

.project-card:hover .project-visual svg {
  transform: scale(1.15) rotate(5deg);
  opacity: 0.75;
}

.project-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.project-tag {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.project-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  letter-spacing: 0.05em;
  font-weight: 400;
}

.project-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Cost Calculator Section */
.calculator-container {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: start;
}

.calc-inputs {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 40px;
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.input-slider-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.slider-value {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--accent-gold);
}

/* -------------------------------------------------------------
   Plinth Area Rate Cost Estimator (CPWD / UPPWD)
   ------------------------------------------------------------- */
.calc-tabs {
  display: flex;
  gap: 10px;
  border-bottom: 2px solid var(--card-border);
  margin-bottom: 30px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.calc-tab {
  padding: 12px 24px;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 3px solid transparent;
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
  white-space: nowrap;
}

.calc-tab:hover, .calc-tab.act {
  color: var(--accent-gold);
}

.calc-tab.act {
  border-bottom-color: var(--accent-gold);
  background: rgba(var(--accent-gold-rgb), 0.03);
}

.calc-tp {
  display: none;
}

.calc-tp.act {
  display: block;
}

.calc-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  margin-bottom: 24px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

.calc-ch {
  background: var(--accent-copper);
  color: #fff;
  padding: 14px 20px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}

.calc-num {
  background: var(--accent-gold);
  color: #fff;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.calc-cb {
  padding: 20px 24px;
}

.g2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.g3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
}

@media (max-width: 768px) {
  .g2, .g3 {
    grid-template-columns: 1fr;
    gap: 15px;
  }
}

.calc-lbl {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  margin-top: 15px;
}

.calc-lbl.nt {
  margin-top: 0;
}

.calc-inp, .calc-sel {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-main);
  background: var(--card-bg);
  font-family: var(--font-sans);
  outline: none;
  transition: all 0.3s;
}

.calc-inp:focus, .calc-sel:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 2px rgba(var(--accent-gold-rgb), 0.08);
}

/* Rate Source Toggle */
.calc-src-tog {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 10px;
}

@media (max-width: 600px) {
  .calc-src-tog {
    grid-template-columns: 1fr;
  }
}

.calc-sb {
  padding: 15px 12px;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  cursor: pointer;
  text-align: center;
  background: var(--card-bg);
  font-family: var(--font-sans);
  transition: all 0.3s ease;
  color: var(--text-main);
}

.calc-sb:hover {
  border-color: var(--accent-gold);
}

.calc-sb.s-cpwd, .calc-sb.s-uppwd {
  border-color: var(--accent-gold);
  background: rgba(var(--accent-gold-rgb), 0.05);
}

.calc-sb .sn {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.calc-sb .ss {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Spec Buttons */
.spec-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.calc-spc {
  padding: 8px 16px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--card-bg);
  font-family: var(--font-sans);
  transition: all 0.3s;
  position: relative;
}

.calc-spc:hover {
  border-color: var(--accent-gold);
}

.calc-spc.act {
  border-color: var(--accent-gold);
  background: var(--accent-copper);
  color: #fff;
}

/* FAR panel display */
.fp {
  background: rgba(var(--accent-gold-rgb), 0.02);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px;
  margin-top: 25px;
}

.fp-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 15px;
  margin-bottom: 15px;
}

@media (max-width: 768px) {
  .fp-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.fpc {
  text-align: center;
}

.fpl {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.fpv {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-gold);
}

.fps {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.fbar {
  height: 8px;
  border-radius: 4px;
  background: rgba(var(--accent-gold-rgb), 0.08);
  overflow: hidden;
  display: flex;
  margin-bottom: 8px;
}

.fba {
  background: var(--accent-copper);
  height: 100%;
  transition: width 0.5s ease;
}

.fbb {
  background: var(--accent-gold);
  height: 100%;
  transition: width 0.5s ease;
}

.fleg {
  display: flex;
  gap: 15px;
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

/* Building visualizer */
.bvlbl {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 25px;
  margin-bottom: 10px;
}

.bviz {
  display: flex;
  flex-direction: column-reverse;
  gap: 4px;
}

.bf {
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  transition: all 0.3s;
  border: 1px solid transparent;
}

.bfr {
  font-size: 0.7rem;
  font-weight: 400;
  margin-left: auto;
  opacity: 0.8;
}

.bf-gf { background: rgba(55, 79, 78, 0.9); color: #fff; width: 100%; }
.bf-ff { background: rgba(55, 79, 78, 0.75); color: #fff; width: 90%; }
.bf-sf { background: rgba(55, 79, 78, 0.6); color: #fff; width: 82%; }
.bf-tf { background: rgba(55, 79, 78, 0.45); color: #fff; width: 75%; }
.bf-4f { background: rgba(55, 79, 78, 0.3); color: var(--text-main); width: 68%; }

.bf-part {
  border: 2px dashed var(--accent-gold);
  background: rgba(var(--accent-gold-rgb), 0.1);
  color: var(--accent-gold);
  font-weight: 700;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  border-radius: 6px;
  gap: 10px;
}

.ptag {
  background: var(--accent-gold);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
}

.bf-mumty {
  background: var(--card-bg);
  color: var(--text-muted);
  width: 25%;
  font-size: 0.75rem;
  border: 1px solid var(--card-border);
}

.bf-stilt {
  background: rgba(var(--accent-gold-rgb), 0.02);
  color: var(--text-muted);
  width: 100%;
  border: 2px dashed var(--card-border);
}

/* Height Adjustment badges */
.ht-adj {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  padding: 8px 12px;
  background: rgba(var(--accent-gold-rgb), 0.05);
  border-radius: 6px;
  font-size: 0.75rem;
  flex-wrap: wrap;
}

.ht-adj .adj-val {
  font-weight: 700;
  color: var(--accent-gold);
  font-size: 0.9rem;
}

.ht-adj .adj-factor {
  font-weight: 700;
  color: var(--accent-copper);
}

.ht-ref-toggle {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-gold);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 10px;
  padding: 4px 0;
  user-select: none;
}

.ht-ref-box {
  display: none;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 15px;
  margin-top: 8px;
}

.ht-ref-box.open {
  display: block;
}

.hrt {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
  margin-top: 8px;
}

.hrt th {
  background: var(--accent-copper);
  color: #fff;
  padding: 6px 10px;
  text-align: center;
  font-size: 0.7rem;
}

.hrt td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--card-border);
  text-align: center;
  color: var(--text-main);
}

.hrt td:first-child {
  font-weight: 700;
  text-align: left;
}

.hrt .current-ht td {
  background: rgba(var(--accent-gold-rgb), 0.1) !important;
  font-weight: 700;
}

/* Advanced Height customization */
.adv-ht {
  background: rgba(0, 0, 0, 0.01);
  border: 1px dashed var(--card-border);
  border-radius: 10px;
  padding: 15px;
  margin-top: 20px;
}

.adv-ht-hdr {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-copper);
  margin-bottom: 10px;
}

.ht-rule-note {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.4;
}

/* Status Indicators */
.slist {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.si {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.75rem;
  line-height: 1.5;
  border-left: 3px solid transparent;
}

.si.ok {
  background: rgba(188, 108, 80, 0.06);
  border-left-color: var(--accent-gold);
  color: var(--text-main);
}

.si.info {
  background: rgba(55, 79, 78, 0.04);
  border-left-color: var(--accent-copper);
  color: var(--text-main);
}

.si.warn {
  background: rgba(209, 128, 30, 0.08);
  border-left-color: var(--accent-gold);
  color: var(--text-main);
}

.si strong {
  display: block;
  font-weight: 700;
}

/* Add-ons List */
.adn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--card-border);
}

.adn:last-child {
  border: none;
}

.al {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.as {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.chk {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-gold);
  cursor: pointer;
}

.smi {
  width: 80px;
  padding: 6px 10px;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  font-size: 0.8rem;
  text-align: center;
  background: var(--card-bg);
  color: var(--text-main);
}

/* Estimate Table & Output */
.etop {
  background: var(--accent-copper);
  padding: 16px 20px;
  border-bottom: 3px solid var(--accent-gold);
}

.etop h2 {
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.etop p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
  margin-top: 4px;
}

.emeta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 12px 20px;
  background: rgba(0, 0, 0, 0.02);
  border-bottom: 1px solid var(--card-border);
  gap: 12px;
}

.eml {
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.emv {
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 2px;
  color: var(--text-main);
}

.et {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.et th {
  background: var(--accent-copper);
  color: #fff;
  padding: 10px 14px;
  text-align: right;
  font-size: 0.75rem;
  font-weight: 600;
}

.et th:first-child {
  text-align: left;
}

.et td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--card-border);
  text-align: right;
  color: var(--text-main);
}

.et td:first-child {
  text-align: left;
  font-weight: 500;
}

.et tr:nth-child(even) td {
  background: rgba(0, 0, 0, 0.01);
}

.et .rp td {
  background: rgba(var(--accent-gold-rgb), 0.08) !important;
  font-weight: 700;
  color: var(--accent-gold);
}

.et .rx td {
  background: rgba(var(--accent-gold-rgb), 0.02) !important;
  color: var(--text-muted);
  font-style: italic;
}

.et .rg td {
  background: rgba(var(--accent-gold-rgb), 0.03) !important;
  font-weight: 700;
  color: var(--accent-copper);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.et .rs td {
  background: rgba(0, 0, 0, 0.03) !important;
  font-weight: 700;
}

.et .rt td {
  background: var(--accent-copper) !important;
  color: #fff !important;
  font-size: 0.9rem;
  font-weight: 700;
  border: none;
}

.et .rr td {
  background: var(--accent-gold) !important;
  color: #fff !important;
  font-size: 1.1rem;
  font-weight: 700;
  border: none;
}

.enote {
  padding: 15px 20px;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.01);
  line-height: 1.6;
  border-top: 1px solid var(--card-border);
}

.enote strong {
  color: var(--text-main);
}

/* Compare Mode Elements */
.cmpg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--card-border);
  border-radius: 12px;
  overflow: hidden;
  margin: 15px 0;
}

.cg-c {
  background: var(--accent-copper);
  padding: 20px;
  text-align: center;
}

.cg-u {
  background: var(--accent-gold);
  padding: 20px;
  text-align: center;
}

.cg-s {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 6px;
}

.cg-v {
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-serif);
}

.cg-b {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
}

.vbox {
  background: rgba(0, 0, 0, 0.02);
  border-radius: 8px;
  padding: 12px 15px;
  margin: 10px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Specs Table elements */
.dst {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.dst th {
  padding: 10px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dst th.rh {
  background: rgba(0, 0, 0, 0.02);
  color: var(--text-muted);
  text-align: left;
  width: 20%;
}

.dst th.ct {
  background: var(--accent-copper);
  color: #fff;
}

.dst th.ut {
  background: var(--accent-gold);
  color: #fff;
}

.dst th.dt {
  background: var(--accent-bronze);
  color: #fff;
}

.dst td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--card-border);
  vertical-align: top;
  line-height: 1.5;
  color: var(--text-main);
}

.dst td:first-child {
  background: rgba(0, 0, 0, 0.01);
  font-weight: 700;
  color: var(--accent-copper);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.ds {
  color: var(--text-muted);
}

.dm {
  color: var(--accent-gold);
  font-weight: 700;
}

.dj {
  color: var(--accent-copper);
  font-weight: 700;
}

.scb {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 15px;
}

.scbt {
  padding: 6px 14px;
  border: 1px solid var(--card-border);
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--card-bg);
  font-family: var(--font-sans);
  transition: all 0.3s;
}

.scbt:hover {
  border-color: var(--accent-gold);
}

.scbt.act {
  border-color: var(--accent-gold);
  background: rgba(var(--accent-gold-rgb), 0.06);
  color: var(--accent-gold);
}

/* Rates Table */
.rtt {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.rtt th {
  background: var(--accent-copper);
  color: #fff;
  padding: 10px 14px;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
}

.rtt th:first-child {
  text-align: left;
}

.rtt td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--card-border);
  text-align: center;
  color: var(--text-main);
}

.rtt td:first-child {
  font-weight: 700;
  background: rgba(0, 0, 0, 0.01);
  text-align: left;
  color: var(--accent-copper);
}

.rtt tr:nth-child(even) td {
  background: rgba(0, 0, 0, 0.01);
}

/* Estimator Info Note-Boxes */
.nb {
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 15px;
  font-size: 0.8rem;
  line-height: 1.6;
  border-left: 4px solid;
}

.nb-g {
  background: rgba(var(--accent-gold-rgb), 0.04);
  border-color: var(--accent-gold);
  color: var(--text-main);
}

.nb-b {
  background: rgba(55, 79, 78, 0.04);
  border-color: var(--accent-copper);
  color: var(--text-main);
}

.nb-a {
  background: rgba(var(--accent-gold-rgb), 0.06);
  border-color: var(--accent-gold);
  color: var(--text-main);
}

/* Button sets */
.calc-btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.3s;
}

.btn-g {
  background: var(--accent-gold);
  color: #fff;
}

.btn-g:hover {
  background: var(--accent-copper);
}

.btn-gh {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-muted);
}

.btn-gh:hover {
  background: rgba(0, 0, 0, 0.1);
}

.btn-d {
  background: var(--accent-copper);
  color: #fff;
}

.btn-d:hover {
  background: var(--accent-gold);
}

.brow {
  display: flex;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}

@media print {
  body * {
    visibility: hidden;
  }
  #res, #res * {
    visibility: visible;
  }
  #res {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    margin: 0;
    padding: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }
  .no-print {
    display: none !important;
  }
  
  .letterhead-bg-wrap {
    display: block !important;
    position: fixed !important;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -10;
  }
  
  .calc-card {
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
    margin: 0 !important;
    padding: 0 !important;
    padding-top: 55mm !important;
    padding-bottom: 25mm !important;
  }
  
  #est-header-text {
    border-bottom: 2px solid #374F4E !important;
    padding-bottom: 15px !important;
    color: #374F4E !important;
    font-size: 1.15rem !important;
  }
  
  #est-spec-box {
    page-break-inside: avoid;
    margin-top: 30px !important;
    border-top: 1px solid #cabdb5 !important;
  }
  
  .et th {
    background: #374F4E !important;
    color: #ffffff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  
  .et tr.rg td {
    background-color: #f2ede8 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .et tr.rp td {
    background-color: #fbf4ec !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .et tr.rx td {
    background-color: #faf8f6 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .et tr.rs td {
    background-color: #f5ece4 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .et tr.rt td {
    background-color: #374F4E !important;
    color: #ffffff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .et tr.rr td {
    background-color: #D1801E !important;
    color: #ffffff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}

/* Contact Us Section */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}

.contact-info-column {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-card-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-gold);
}

.contact-card-value {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--text-main);
  line-height: 1.4;
  font-weight: 300;
}

.contact-form-column {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 40px;
  border-radius: 20px;
}

.form-grid {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.input-field-group {
  position: relative;
  width: 100%;
}

.form-input {
  width: 100%;
  background: none;
  border: none;
  border-bottom: 1px solid var(--card-border);
  padding: 10px 0;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s;
}

.form-textarea {
  resize: none;
  height: 80px;
}

.form-input:focus {
  border-color: var(--accent-gold);
}

.input-field-group label {
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.85rem;
  pointer-events: none;
  transition: all 0.3s ease;
  letter-spacing: 0.05em;
}

/* Float logic */
.form-input:focus ~ label,
.form-input:not(:placeholder-shown) ~ label {
  top: -12px;
  font-size: 0.65rem;
  color: var(--accent-gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.submit-btn {
  align-self: flex-start;
  background: none;
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  padding: 12px 30px;
  border-radius: 30px;
  font-family: var(--font-serif);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: all 0.3s ease;
}

.submit-btn:hover {
  background: var(--accent-gold);
  color: var(--bg-primary);
}

/* Theme Switcher Header Controls */
.header-controls {
  display: flex;
  align-items: center;
  gap: 20px;
}

.mini-theme-btn {
  background: none;
  border: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  cursor: pointer;
  outline: none;
  transition: transform 0.2s, box-shadow 0.2s;
  margin: 0 4px;
}

.mini-theme-btn:hover {
  transform: scale(1.3);
  box-shadow: 0 0 8px rgba(102, 76, 54, 0.4);
}

.btn-theme-obsidian { background: #eee9df; border: 1px solid rgba(0,0,0,0.15); }
.btn-theme-alabaster { background: #c9c1b1; border: 1px solid #a35139; }
.btn-theme-slate { background: #1b2632; border: 1px solid rgba(255,255,255,0.2); }

/* Global Footer */
footer.site-footer {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 40px;
  border-top: 1px solid var(--card-border);
  text-align: center;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 200;
  position: relative;
  z-index: 10;
}

/* Responsive adjustment codes */
@media (max-width: 900px) {
  header.site-header {
    flex-direction: column;
    gap: 20px;
    padding: 20px;
  }
  nav.main-nav {
    gap: 15px;
  }
  .about-grid, .calculator-container, .contact-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .selector-group {
    grid-template-columns: 1fr;
  }
  .site-content {
    padding: 20px;
  }
}

/* -------------------------------------------------------------
   Dynamic Gallery Modal Lightbox
   ------------------------------------------------------------- */
.gallery-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 5, 5, 0.96);
  z-index: 2000;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
}

.gallery-modal.active {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.modal-close {
  position: absolute;
  top: 30px;
  right: 40px;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 2.8rem;
  font-weight: 200;
  cursor: pointer;
  opacity: 0.5;
  transition: all 0.3s;
}

.modal-close:hover {
  opacity: 1;
  transform: rotate(90deg);
  color: var(--accent-gold);
}

.modal-content {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 1100px;
  gap: 30px;
  padding: 0 40px;
}

.modal-image-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 80%;
  max-height: 70vh;
}

#lightbox-img {
  max-width: 100%;
  max-height: 60vh;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.modal-caption {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 15px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.modal-nav {
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 2.2rem;
  cursor: pointer;
  padding: 20px;
  opacity: 0.4;
  transition: all 0.3s;
  user-select: none;
}

.modal-nav:hover {
  opacity: 1;
  color: var(--accent-gold);
  transform: scale(1.15);
}

.modal-thumbnails {
  display: flex;
  gap: 12px;
  margin-top: 40px;
  max-width: 70%;
  overflow-x: auto;
  padding: 10px;
}

/* Hide scrollbar for thumbnails strip */
.modal-thumbnails::-webkit-scrollbar {
  height: 4px;
}
.modal-thumbnails::-webkit-scrollbar-thumb {
  background: var(--card-border);
}

.modal-thumb-img {
  width: 64px;
  height: 48px;
  object-fit: cover;
  border-radius: 6px;
  opacity: 0.35;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.modal-thumb-img:hover {
  opacity: 0.7;
}

.modal-thumb-img.active {
  opacity: 1;
  border-color: var(--accent-gold);
  transform: scale(1.08);
}

@media (max-width: 768px) {
  .modal-content {
    padding: 0 10px;
    gap: 10px;
  }
  .modal-nav {
    font-size: 1.6rem;
    padding: 10px;
  }
  .modal-image-wrapper {
    max-width: 90%;
  }
}

.et td.spec-cat {
  color: var(--accent-copper);
}

/* -------------------------------------------------------------
   Sofi-inspired Premium Motion Design & Scroll Reveal
   ------------------------------------------------------------- */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3.5px;
  background: var(--accent-gold);
  width: 0%;
  z-index: 9999;
  transition: width 0.1s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 10px rgba(var(--accent-gold-rgb), 0.5);
}

.reveal-el {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-el.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Transparent Drafting Floor Plan Background Animation */
.drafting-floorplan-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  opacity: 0;
  z-index: 1;
  transition: opacity 1.5s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

body[data-active-section="home"] .drafting-floorplan-container,
body:not([data-active-section]) .drafting-floorplan-container {
  opacity: 0.08; /* Transparency */
}

.drafting-floorplan-svg {
  width: 100%;
  height: 100%;
  stroke: var(--accent-copper);
  stroke-width: 0.6px;
  fill: none;
}

.drafting-floorplan-svg rect,
.drafting-floorplan-svg line,
.drafting-floorplan-svg path {
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
}

#section-home.active .drafting-floorplan-svg rect,
#section-home.active .drafting-floorplan-svg line,
#section-home.active .drafting-floorplan-svg path {
  animation: drawDraftingLines 4s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.drafting-floorplan-svg text {
  fill: var(--accent-copper);
  font-family: var(--font-sans);
  font-size: 7.5px;
  font-weight: 400;
  letter-spacing: 0.1em;
  opacity: 0;
  stroke: none;
}

#section-home.active .drafting-floorplan-svg text {
  animation: fadeTextIn 2s ease-in-out 1.5s forwards;
}

@keyframes drawDraftingLines {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes fadeTextIn {
  to {
    opacity: 0.35;
  }
}

/* Ensure Home Section content aligns relative to z-index */
#section-home {
  position: relative;
  z-index: 5;
  min-height: calc(100vh - 160px);
}

.logo-showcase-container,
.home-intro-text {
  position: relative;
  z-index: 10;
}

/* CSS-based Portfolio Filter System */
.projects-grid[data-active-filter="all"] .project-card {
  display: flex !important;
  opacity: 1 !important;
  transform: scale(1) !important;
}

.projects-grid[data-active-filter="residential"] .project-card[data-category="residential"],
.projects-grid[data-active-filter="commercial"] .project-card[data-category="commercial"],
.projects-grid[data-active-filter="institutional"] .project-card[data-category="institutional"] {
  display: flex !important;
  opacity: 1 !important;
  transform: scale(1) !important;
}

.projects-grid[data-active-filter="residential"] .project-card:not([data-category="residential"]),
.projects-grid[data-active-filter="commercial"] .project-card:not([data-category="commercial"]),
.projects-grid[data-active-filter="institutional"] .project-card:not([data-category="institutional"]) {
  display: none !important;
  opacity: 0 !important;
  transform: scale(0.95) !important;
}

/* Scrollable Gallery Lightbox Styles */
.gallery-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 15, 15, 0.98); /* dark immersive backdrop */
  z-index: 2000;
  display: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  overflow-y: scroll; /* Force vertical scrollbar */
  -webkit-overflow-scrolling: touch; /* Smooth momentum scroll */
  padding: 0;
}

.gallery-modal.active {
  display: block;
  opacity: 1;
  pointer-events: auto;
}

.modal-scroll-container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  padding: 80px 20px; /* Generous bottom spacing for clean edge */
}

.modal-project-title-header {
  text-align: center;
  margin-bottom: 10px;
}

.modal-project-title-header h2 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  color: #fff1e5;
}

.modal-project-title-header p {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.modal-images-feed {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.modal-feed-img-wrapper {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.modal-feed-img {
  width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.5);
  border: 1px solid rgba(255, 211, 172, 0.1);
  background: rgba(0, 0, 0, 0.2);
}

.modal-feed-caption {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: #ccbeb1;
  text-transform: uppercase;
}

.modal-close {
  position: fixed;
  top: 25px;
  right: 35px;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 2.5rem;
  cursor: pointer;
  z-index: 2100;
  transition: transform 0.2s, color 0.2s;
}

.modal-close:hover {
  color: var(--accent-gold);
  transform: scale(1.1) rotate(90deg);
}

/* Category Windows Grid */
.category-windows-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
  width: 100%;
}

.category-window-card {
  position: relative;
  height: 140px;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--card-border);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s, box-shadow 0.4s;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.category-window-card .window-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  filter: grayscale(80%) contrast(90%);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s;
  z-index: 1;
}

.category-window-card .window-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(51, 28, 8, 0.3) 0%, rgba(51, 28, 8, 0.75) 100%);
  z-index: 2;
  transition: background 0.4s;
}

.category-window-card .window-content {
  position: absolute;
  bottom: 16px;
  left: 20px;
  right: 20px;
  z-index: 3;
  color: #fff1e5;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.category-window-card .window-content h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
  font-weight: 500;
}

.category-window-card .window-content span {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  color: #ccbeb1;
  letter-spacing: 0.05em;
  opacity: 0.85;
}

/* Hover & Active States */
.category-window-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-gold);
  box-shadow: 0 10px 25px rgba(102, 76, 54, 0.15);
}

.category-window-card:hover .window-bg-img {
  transform: scale(1.08);
  filter: grayscale(0%) contrast(100%);
}

.category-window-card:hover .window-overlay {
  background: linear-gradient(to bottom, rgba(51, 28, 8, 0.15) 0%, rgba(51, 28, 8, 0.8) 100%);
}

.category-window-card.active {
  border-color: var(--accent-gold);
  border-width: 2px;
  box-shadow: 0 10px 30px rgba(102, 76, 54, 0.25);
  transform: translateY(-3px);
}

.category-window-card.active .window-bg-img {
  filter: grayscale(0%) contrast(100%);
}

.category-window-card.active .window-overlay {
  background: linear-gradient(to bottom, rgba(51, 28, 8, 0.1) 0%, rgba(51, 28, 8, 0.85) 100%);
}

.category-window-card.active .window-content h3 {
  color: var(--accent-gold);
}

/* Responsive adjustment */
@media (max-width: 768px) {
  header.site-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    gap: 0;
  }
  
  .brand-wrapper {
    justify-content: flex-start;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  nav.main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-primary);
    background-image: var(--bg-glow);
    border-left: 1px solid var(--card-border);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 35px;
    z-index: 999;
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 40px;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
  }

  nav.main-nav.mobile-active {
    right: 0;
  }

  .nav-link {
    font-size: 0.95rem;
    letter-spacing: 0.25em;
    padding: 10px 0;
  }

  .header-controls {
    gap: 15px;
  }

  /* Hamburger transform open */
  .mobile-menu-toggle.open span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }
  .mobile-menu-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .mobile-menu-toggle.open span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .category-windows-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Lightbox Responsive Enhancements (Tablet/Phone) */
  .modal-scroll-container {
    padding: 60px 10px;
    gap: 20px;
  }
  .modal-feed-img {
    max-height: 75vh;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  }
  .modal-close {
    top: 15px;
    right: 20px;
    font-size: 2rem;
  }
  .modal-project-title-header h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  header.site-header {
    padding: 15px 20px;
  }

  .brand-name {
    font-size: 1.15rem;
    letter-spacing: 0.1em;
  }
  
  .brand-sub {
    font-size: 0.5rem;
    letter-spacing: 0.3em;
  }

  nav.main-nav {
    width: 240px;
    gap: 30px;
  }

  .category-windows-grid {
    grid-template-columns: 1fr;
  }
  .category-window-card {
    height: 100px;
  }
  .modal-scroll-container {
    padding: 50px 8px;
  }
  .modal-feed-img {
    max-height: 70vh;
  }
  .modal-close {
    top: 10px;
    right: 15px;
  }
}