/* ==========================================================================
   SUJANA STUDIO - Pure Static CSS (Biru Tosca Architectural Theme)
   Zero Framework - Compatible with any hosting (cPanel, Apache, Nginx, etc.)
   ========================================================================== */

:root {
  --tosca-50: #f0fdfa;
  --tosca-100: #ccfbf1;
  --tosca-200: #99f6e4;
  --tosca-300: #5eead4;
  --tosca-400: #2dd4bf;
  --tosca-500: #14b8a6;
  --tosca-600: #0d9488;
  --tosca-700: #0f766e;
  --tosca-800: #115e59;
  --tosca-900: #134e4a;
  --cyan-500: #06b6d4;
  --cyan-600: #0891b2;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  color: var(--slate-800);
  background-color: var(--slate-50);
}

body {
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background-color: var(--tosca-500);
  color: #ffffff;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

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

/* Container */
.container {
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* Badges */
.badge-tosca {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background-color: rgba(13, 148, 136, 0.12);
  border: 1px solid rgba(20, 184, 166, 0.3);
  color: var(--tosca-700);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.025em;
}

.badge-dark {
  background-color: rgba(15, 23, 42, 0.85);
  border-color: rgba(20, 184, 166, 0.4);
  color: var(--tosca-300);
}

/* Header & Navbar */
.header-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 5rem;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo-img {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  object-contain: fit;
  box-shadow: 0 2px 6px rgba(13, 148, 136, 0.15);
  border: 1px solid rgba(20, 184, 166, 0.25);
  transition: transform 0.2s;
}

.brand-wrap:hover .brand-logo-img {
  transform: scale(1.05);
}

.brand-text-main {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--slate-900);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.brand-text-main span {
  color: var(--tosca-600);
}

.brand-text-sub {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate-500);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-600);
}

.nav-links a {
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--tosca-600);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-switch {
  display: flex;
  align-items: center;
  background-color: var(--slate-100);
  border: 1px solid var(--slate-200);
  border-radius: 0.5rem;
  padding: 0.2rem;
  font-size: 0.75rem;
  font-weight: 700;
}

.lang-btn {
  padding: 0.25rem 0.5rem;
  border-radius: 0.35rem;
  color: var(--slate-600);
  transition: all 0.2s;
}

.lang-btn.active {
  background-color: #ffffff;
  color: var(--tosca-700);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.btn-tosca {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 0.75rem;
  font-size: 0.813rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--tosca-500), var(--tosca-700));
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-tosca:hover {
  background: linear-gradient(135deg, var(--tosca-600), var(--tosca-800));
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(13, 148, 136, 0.35);
}

.btn-tosca:active {
  transform: translateY(0);
}

.btn-outline-tosca {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 0.75rem;
  font-size: 0.813rem;
  font-weight: 700;
  color: var(--tosca-300);
  background-color: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(20, 184, 166, 0.35);
  transition: all 0.2s ease;
}

.btn-outline-tosca:hover {
  background-color: rgba(15, 23, 42, 0.9);
  border-color: var(--tosca-400);
  color: #ffffff;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--slate-700);
}

.mobile-drawer {
  display: none;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 1.25rem 1.5rem;
  background-color: #ffffff;
  border-bottom: 1px solid var(--slate-200);
}

.mobile-drawer.open {
  display: flex;
}

.mobile-drawer a {
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-700);
}

.mobile-drawer a:hover {
  background-color: var(--tosca-50);
  color: var(--tosca-700);
}

/* Hero Section */
.hero-sec {
  position: relative;
  background: linear-gradient(180deg, var(--slate-900) 0%, #070d19 100%);
  color: #ffffff;
  padding: 3.5rem 0 5rem;
  overflow: hidden;
}

.hero-aura-1 {
  position: absolute;
  top: 0;
  right: 20%;
  width: 28rem;
  height: 28rem;
  background-color: rgba(20, 184, 166, 0.15);
  border-radius: 9999px;
  filter: blur(80px);
  pointer-events: none;
}

.hero-aura-2 {
  position: absolute;
  bottom: 0;
  left: 5%;
  width: 24rem;
  height: 24rem;
  background-color: rgba(6, 182, 212, 0.1);
  border-radius: 9999px;
  filter: blur(80px);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 10;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 1rem 0;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--slate-300);
  line-height: 1.6;
  max-width: 38rem;
  margin-bottom: 2rem;
}

.hero-cta-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-trust-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.75rem;
  color: var(--slate-300);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.trust-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 9999px;
  background-color: var(--tosca-400);
  flex-shrink: 0;
}

.hero-card {
  position: relative;
  border-radius: 1.25rem;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-img {
  width: 100%;
  height: 26rem;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.hero-card:hover .hero-img {
  transform: scale(1.04);
}

.hero-card-overlay {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  padding: 1rem;
  border-radius: 0.75rem;
  background-color: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(20, 184, 166, 0.25);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Comparison Slider Section */
.slider-sec {
  background-color: var(--slate-900);
  color: #ffffff;
  padding: 4.5rem 0;
  position: relative;
  overflow: hidden;
}

.sec-head {
  text-align: center;
  max-width: 48rem;
  margin: 0 auto 3rem;
}

.sec-head h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 0.5rem;
}

.sec-head p {
  color: var(--slate-300);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

.slider-box {
  max-width: 58rem;
  margin: 0 auto;
  background-color: rgba(30, 41, 59, 0.8);
  border: 1px solid var(--slate-700);
  border-radius: 1.25rem;
  padding: 1rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.slider-viewport {
  position: relative;
  width: 100%;
  height: 28rem;
  border-radius: 0.75rem;
  overflow: hidden;
  user-select: none;
  cursor: ew-resize;
}

.slider-layer-3d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.slider-layer-3d img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slider-layer-2d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background-color: #081a2e;
  overflow: hidden;
}

.cad-grid {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background-image: 
    linear-gradient(to right, #0d9488 1px, transparent 1px),
    linear-gradient(to bottom, #0d9488 1px, transparent 1px);
  background-size: 24px 24px;
}

.cad-svg {
  width: 100%;
  height: 100%;
  padding: 2rem;
}

.slider-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--tosca-400), var(--cyan-500));
  box-shadow: 0 0 16px rgba(45, 212, 191, 0.8);
  pointer-events: none;
}

.slider-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 2.25rem;
  height: 2.25rem;
  background-color: var(--tosca-500);
  border: 2px solid #ffffff;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.slider-label {
  position: absolute;
  top: 1rem;
  padding: 0.35rem 0.75rem;
  border-radius: 0.5rem;
  background-color: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(20, 184, 166, 0.3);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--tosca-300);
  pointer-events: none;
}

.slider-label.left { left: 1rem; }
.slider-label.right { right: 1rem; }

/* Catalog Section */
.catalog-sec {
  padding: 4.5rem 0;
  background-color: var(--slate-50);
}

.filter-card {
  background-color: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 1rem;
  padding: 1.25rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.filter-top {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.search-input-wrap {
  flex: 1;
  min-width: 15rem;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.25rem;
  border-radius: 0.75rem;
  border: 1px solid var(--slate-200);
  background-color: var(--slate-50);
  font-size: 0.875rem;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--slate-400);
}

.cat-tabs {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
}

.cat-btn {
  padding: 0.5rem 0.85rem;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  background-color: var(--slate-100);
  color: var(--slate-600);
  transition: all 0.2s;
  white-space: nowrap;
}

.cat-btn.active {
  background-color: var(--tosca-600);
  color: #ffffff;
}

.filter-bottom {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--slate-100);
  font-size: 0.75rem;
  flex-wrap: wrap;
}

.filter-select {
  padding: 0.35rem 0.65rem;
  border-radius: 0.5rem;
  border: 1px solid var(--slate-200);
  background-color: #ffffff;
  font-weight: 600;
  color: var(--slate-700);
}

/* Projects Grid */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr));
  gap: 2rem;
}

.proj-card {
  background-color: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 1rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.proj-card:hover {
  transform: translateY(-4px);
  border-color: rgba(20, 184, 166, 0.5);
  box-shadow: 0 12px 24px -6px rgba(13, 148, 136, 0.12);
}

.proj-img-wrap {
  position: relative;
  height: 14rem;
  overflow: hidden;
  background-color: var(--slate-100);
}

.proj-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.proj-badge-top {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  display: flex;
  gap: 0.5rem;
}

.badge-code {
  padding: 0.25rem 0.5rem;
  border-radius: 0.35rem;
  background-color: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 800;
}

.badge-lot {
  padding: 0.25rem 0.5rem;
  border-radius: 0.35rem;
  background-color: var(--tosca-600);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 800;
}

.proj-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: space-between;
}

.proj-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.3;
}

.proj-desc {
  font-size: 0.75rem;
  color: var(--slate-500);
  margin-top: 0.4rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.proj-specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  padding: 0.85rem 0;
  margin: 0.85rem 0;
  border-top: 1px solid var(--slate-100);
  border-bottom: 1px solid var(--slate-100);
  text-align: center;
}

.spec-val {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--slate-900);
  display: block;
}

.spec-lbl {
  font-size: 0.625rem;
  color: var(--slate-400);
}

.proj-price-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.proj-orig-price {
  font-size: 0.75rem;
  color: var(--slate-400);
  text-decoration: line-through;
  margin-right: 0.5rem;
}

.proj-curr-price {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--tosca-700);
}

.proj-btn-view {
  width: 100%;
  padding: 0.65rem;
  border-radius: 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--tosca-600), var(--cyan-600));
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s;
}

.proj-btn-view:hover {
  background: linear-gradient(135deg, var(--tosca-700), var(--cyan-700));
}

/* Calculator Section */
.calc-sec {
  background-color: var(--slate-900);
  color: #ffffff;
  padding: 4.5rem 0;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.calc-form-card {
  background-color: rgba(30, 41, 59, 0.9);
  border: 1px solid var(--slate-700);
  border-radius: 1.25rem;
  padding: 2rem;
}

.range-row {
  margin-bottom: 1.5rem;
}

.range-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.range-val {
  font-family: monospace;
  font-size: 1rem;
  color: var(--tosca-400);
  background-color: var(--slate-900);
  padding: 0.2rem 0.6rem;
  border-radius: 0.35rem;
  border: 1px solid rgba(20, 184, 166, 0.3);
}

.range-slider {
  width: 100%;
  height: 0.4rem;
  background: var(--slate-700);
  border-radius: 9999px;
  outline: none;
  accent-color: var(--tosca-500);
}

.standard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.std-btn {
  padding: 0.75rem 0.5rem;
  border-radius: 0.75rem;
  border: 1px solid var(--slate-700);
  background-color: var(--slate-800);
  color: var(--slate-300);
  text-align: left;
  transition: all 0.2s;
}

.std-btn.active {
  background-color: rgba(13, 148, 136, 0.2);
  border-color: var(--tosca-500);
  color: #ffffff;
}

.std-title {
  font-weight: 700;
  font-size: 0.75rem;
  display: block;
}

.std-cost {
  font-size: 0.65rem;
  color: var(--tosca-400);
}

.calc-result-card {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: 1px solid rgba(20, 184, 166, 0.35);
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.res-num {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--tosca-300);
  margin: 0.25rem 0;
}

/* Deliverables Section */
.deliv-sec {
  padding: 4.5rem 0;
  background-color: #ffffff;
}

.deliv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 2rem;
}

.deliv-card {
  padding: 1.75rem;
  border-radius: 1.25rem;
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  transition: all 0.3s;
}

.deliv-card:hover {
  border-color: rgba(20, 184, 166, 0.5);
  background-color: rgba(240, 253, 250, 0.4);
}

.deliv-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  background-color: var(--tosca-100);
  color: var(--tosca-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

/* Reviews Section */
.reviews-sec {
  padding: 4.5rem 0;
  background-color: var(--slate-50);
  border-top: 1px solid var(--slate-200);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 2rem;
}

.review-card {
  background-color: #ffffff;
  padding: 1.75rem;
  border-radius: 1.25rem;
  border: 1px solid var(--slate-200);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* FAQ Accordion */
.faq-sec {
  padding: 4.5rem 0;
  background-color: #ffffff;
}

.faq-list {
  max-width: 48rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  border: 1px solid var(--slate-200);
  border-radius: 0.75rem;
  overflow: hidden;
}

.faq-btn {
  width: 100%;
  padding: 1.15rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--slate-900);
  text-align: left;
  background-color: #ffffff;
}

.faq-btn:hover {
  background-color: var(--slate-50);
}

.faq-content {
  display: none;
  padding: 0 1.25rem 1.25rem;
  font-size: 0.85rem;
  color: var(--slate-600);
  line-height: 1.6;
}

.faq-item.active .faq-content {
  display: block;
}

/* CTA Banner */
.cta-banner {
  padding: 4.5rem 0;
  background: linear-gradient(135deg, var(--tosca-800), var(--cyan-700));
  color: #ffffff;
  text-align: center;
}

.cta-banner h2 {
  font-size: 2.25rem;
  font-weight: 900;
  max-width: 40rem;
  margin: 0 auto 0.75rem;
}

.cta-banner p {
  color: var(--tosca-100);
  max-width: 32rem;
  margin: 0 auto 2rem;
}

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 0.75rem;
  background-color: #ffffff;
  color: var(--tosca-900);
  font-weight: 800;
  font-size: 0.875rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  transition: all 0.2s;
}

.btn-white:hover {
  background-color: var(--tosca-50);
  transform: translateY(-2px);
}

/* Footer */
.footer {
  background-color: var(--slate-950);
  color: var(--slate-400);
  padding: 3.5rem 0 2rem;
  font-size: 0.75rem;
  border-top: 1px solid var(--slate-800);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer h4 {
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer a:hover {
  color: var(--tosca-400);
}

/* Social Media Icons */
.social-links-wrap {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-top: 1rem;
}

.social-icon-btn {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.6rem;
  background-color: var(--slate-900);
  border: 1px solid var(--slate-800);
  color: var(--slate-300);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}

.social-icon-btn:hover {
  background: linear-gradient(135deg, var(--tosca-600), var(--cyan-600));
  border-color: var(--tosca-500);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(13, 148, 136, 0.35);
}

/* Project Detail Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.open {
  display: flex;
}

.modal-dialog {
  background-color: #ffffff;
  border-radius: 1.25rem;
  width: 100%;
  max-width: 60rem;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
  position: relative;
}

.modal-head {
  padding: 1rem 1.5rem;
  background-color: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-close-btn {
  font-size: 1.5rem;
  color: var(--slate-400);
  cursor: pointer;
}

.modal-body {
  padding: 1.5rem;
}

/* Floating WhatsApp Widget in Biru Tosca */
.wa-widget {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.wa-btn {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--tosca-500), var(--cyan-600));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 10px 25px rgba(13, 148, 136, 0.4);
  border: 2px solid #ffffff;
  transition: transform 0.2s;
  cursor: pointer;
}

.wa-btn:hover {
  transform: scale(1.08);
}

.wa-popup {
  display: none;
  width: 22rem;
  background-color: #ffffff;
  border-radius: 1.25rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--slate-200);
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.wa-popup.open {
  display: block;
}

.wa-head {
  padding: 1rem;
  background: linear-gradient(135deg, var(--tosca-600), var(--cyan-700));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid, .calc-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-trust-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .hero-cta-row {
    flex-direction: column;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .standard-grid {
    grid-template-columns: 1fr;
  }
}