/* ═══════════════════════════════════════════
   SKYFORGE ROOFING — DESIGN SYSTEM
   Minimalist Modern · Electric Blue Gradient
═══════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─── */
:root {
  /* Colors */
  --color-bg:         #F7F4EF;
  --color-bg-warm:    #F0EDE7;
  --color-bg-dark:    #111827;
  --color-bg-darker:  #0D1321;
  --color-text:       #1E293B;
  --color-text-mid:   #475569;
  --color-text-light: #94A3B8;
  --color-white:      #FFFFFF;
  --color-border:     #E2DDD7;
  --color-border-dark:#2D3748;

  /* Brand Gradient */
  --grad-start:  #0052FF;
  --grad-end:    #4D7CFF;
  --gradient:    linear-gradient(135deg, #0052FF 0%, #4D7CFF 100%);
  --gradient-h:  linear-gradient(135deg, #0044E0 0%, #3D6CEE 100%);

  /* Typography */
  --font-display: 'Calistoga', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm:  0 1px 4px rgba(30,41,59,0.06), 0 1px 2px rgba(30,41,59,0.04);
  --shadow-md:  0 4px 16px rgba(30,41,59,0.08), 0 2px 8px rgba(30,41,59,0.04);
  --shadow-lg:  0 12px 40px rgba(30,41,59,0.12), 0 4px 16px rgba(30,41,59,0.06);
  --shadow-blue: 0 8px 32px rgba(0,82,255,0.28);

  /* Transitions */
  --ease-base:  all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

/* ─── RESET & BASE ─── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--nav-height) + 16px);
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ─── CONTAINER ─── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* ─── TYPOGRAPHY ─── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  color: var(--color-text);
}

h1 { font-size: clamp(2.6rem, 6vw, 4.5rem); font-weight: 400; }
h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 400; }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); font-weight: 400; }
h4 { font-size: 1.1rem; font-weight: 600; font-family: var(--font-body); }

p { color: var(--color-text-mid); line-height: 1.7; }

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── SECTION LAYOUT ─── */
.section-pad {
  padding-block: clamp(4rem, 8vw, 7rem);
}

.bg-warm { background: var(--color-bg-warm); }

.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--grad-start);
  background: rgba(0, 82, 255, 0.08);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}
.section-label.light {
  color: var(--grad-end);
  background: rgba(77, 124, 255, 0.15);
}

.section-title {
  margin-bottom: 1rem;
}
.section-title.light {
  color: var(--color-white);
}

.section-sub {
  font-size: 1.05rem;
  max-width: 560px;
  margin-inline: auto;
}

.mt-6 { margin-top: 1.5rem; }

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gradient);
  color: var(--color-white);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.925rem;
  transition: var(--ease-base);
  box-shadow: var(--shadow-blue);
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--gradient-h);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,82,255,0.36);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--color-text);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.925rem;
  border: 1.5px solid var(--color-border);
  transition: var(--ease-base);
}
.btn-ghost:hover {
  border-color: var(--grad-start);
  color: var(--grad-start);
  background: rgba(0, 82, 255, 0.04);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--color-text);
  padding: 0.85rem 2.25rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--color-text);
  transition: var(--ease-base);
}
.btn-outline:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn-lg {
  padding: 0.9rem 2.25rem;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ─── REVEAL ANIMATIONS ─── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }
.reveal-delay-4 { transition-delay: 0.48s; }

.article-summary {
  background: rgba(77, 124, 255, 0.08);
  border-left: 4px solid var(--grad-start);
  padding: 1.5rem 1.5rem 1.5rem 1.5rem;
  border-radius: var(--radius-lg);
  margin: 2rem 0 2rem 0;
}
.article-summary h3 {
  margin-bottom: 0.85rem;
  color: var(--color-text);
}
.article-summary p {
  margin-bottom: 1rem;
  color: var(--color-text-mid);
}
.article-summary ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--color-text-mid);
  line-height: 1.8;
}
.article-quote {
  margin: 2rem 0 0 0;
  padding: 1.5rem;
  background: var(--color-white);
  border: 1px solid rgba(71, 85, 105, 0.12);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  color: var(--color-text);
  font-style: italic;
  line-height: 1.8;
}
.article-quote strong {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--grad-start);
}

/* ═══════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════ */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(247, 244, 239, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
  height: var(--nav-height);
}
.nav-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-text);
  font-weight: 400;
}
.logo-dot { color: var(--grad-start); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-mid);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--color-text); }
.nav-links .nav-cta { color: var(--color-white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--ease-base);
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 1.5rem 2rem;
  gap: 1rem;
}
.mobile-menu a {
  font-weight: 500;
  color: var(--color-text);
  font-size: 1.05rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}
.mobile-menu a:last-child {
  margin-top: 0.5rem;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ═══════════════════════════════════════════
   HERO
═══════════════════════════════════════════ */
.hero {
  min-height: min(72vh, 760px);
  padding-top: calc(var(--nav-height) + 1rem);
  padding-bottom: 1.75rem;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  align-items: center;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2rem);
}

.hero-texture {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0, 82, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(77, 124, 255, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

/* Subtle dot grid */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(30,41,59,0.07) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 0%, transparent 80%);
}

.hero-inner {
  display: contents;
}

.hero-badge {
  grid-column: 1;
  align-self: end;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grad-start);
  background: rgba(0, 82, 255, 0.08);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  width: fit-content;
  margin-bottom: 1.25rem;
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient);
  animation: pulse 2.5s ease infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,82,255,0.4); }
  50% { box-shadow: 0 0 0 6px rgba(0,82,255,0); }
}

.hero-headline {
  grid-column: 1;
  margin-bottom: 1rem;
}

.hero-sub {
  grid-column: 1;
  font-size: clamp(0.98rem, 1.3vw, 1.1rem);
  max-width: 480px;
  margin-bottom: 1.5rem;
  line-height: 1.75;
  color: var(--color-text-mid);
}

.hero-actions {
  grid-column: 1;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.hero-stats {
  grid-column: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0.95rem 1.1rem;
  box-shadow: var(--shadow-md);
  width: min(100%, 980px);
  flex-wrap: nowrap;
}

.stat-item {
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.stat-item:first-child { padding-left: 0; }
.stat-item:last-child  { padding-right: 0; }

.stat-number {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--grad-start);
  line-height: 1;
  font-weight: 400;
}
.stat-label {
  font-size: 0.7rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  white-space: nowrap;
  text-transform: uppercase;
  font-weight: 600;
}

.stat-divider {
  width: 1px;
  height: 42px;
  background: var(--color-border);
  flex-shrink: 0;
}

.hero-visual {
  grid-column: 2;
  grid-row: 1 / 7;
  align-self: stretch;
  justify-self: stretch;
  position: relative;
  height: 100%;
  min-height: 500px;
}

.hero-img-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  height: 100%;
  min-height: 420px;
}
.hero-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-xl);
}
.hero-img-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, transparent 50%, rgba(0,82,255,0.08));
  pointer-events: none;
  border-radius: var(--radius-xl);
}

.hero-img-badge {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-white);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-text);
  box-shadow: var(--shadow-md);
}

/* ═══════════════════════════════════════════
   TRUST BAR
═══════════════════════════════════════════ */
.trust-bar {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem 0;
}

.trust-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.trust-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-light);
  white-space: nowrap;
}

.trust-logos {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-mid);
  white-space: nowrap;
}

/* ═══════════════════════════════════════════
   SERVICES
═══════════════════════════════════════════ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.service-card {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--ease-base);
  position: relative;
  overflow: hidden;
  color: inherit;
  text-decoration: none;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}
.service-card:hover::before {
  transform: scaleX(1);
}
.blog-card {
  border: 1px solid rgba(226, 221, 215, 0.8);
}
.blog-card .card-media {
  width: 100%;
  height: 210px;
  overflow: hidden;
}
.blog-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}
.blog-card:hover .card-media img {
  transform: scale(1.03);
}
.blog-card .card-content {
  padding: 1.4rem 1.4rem 1.6rem;
}
.blog-card h3 {
  font-family: var(--font-body);
  font-size: 1.15rem;
  margin-bottom: 0.9rem;
}
.blog-card p {
  font-size: 0.94rem;
  color: var(--color-text-mid);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.blog-card .service-link {
  display: inline-flex;
  align-items: center;
  color: var(--grad-start);
  font-weight: 700;
}

.service-card h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.6rem;
}

.service-card p {
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.65;
}

.service-list {
  margin-bottom: 1.25rem;
}
.service-list li {
  font-size: 0.82rem;
  color: var(--color-text-mid);
  padding: 0.25rem 0;
  padding-left: 1.1rem;
  position: relative;
}
.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--grad-start);
}

.service-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--grad-start);
  transition: gap 0.2s;
  display: inline-flex;
  align-items: center;
}
.service-link:hover { text-decoration: underline; }

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: rgba(0, 82, 255, 0.08);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  transition: var(--ease-base);
}
.service-card:hover .service-icon {
  background: var(--gradient);
  transform: scale(1.1);
}
.service-card:hover .service-icon svg {
  color: var(--color-white);
  filter: brightness(0) invert(1);
}

/* ═══════════════════════════════════════════
   FEATURE BAND (DARK)
═══════════════════════════════════════════ */
.feature-band {
  background: var(--color-bg-dark);
  padding-block: clamp(3rem, 6vw, 5rem);
}

.feature-band-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.feature-band-text .section-title.light {
  margin-bottom: 1.25rem;
}

.feature-band-sub {
  color: rgba(255,255,255,0.6);
  font-size: 1rem;
  line-height: 1.7;
}

.feature-band-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.fb-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--ease-base);
}
.fb-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(0, 82, 255, 0.3);
}

.fb-card-num {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.fb-card h4 {
  color: var(--color-white);
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.fb-card p {
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   PROCESS
═══════════════════════════════════════════ */
.process-track {
  max-width: 720px;
  margin-inline: auto;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-line {
  position: absolute;
  left: 24px;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: linear-gradient(to bottom, var(--grad-start), var(--grad-end));
  opacity: 0.2;
  border-radius: 2px;
}

.process-step {
  display: flex;
  gap: 2rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}
.process-step:last-child { border-bottom: none; }

.process-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-blue);
  position: relative;
  z-index: 1;
}

.process-content h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.process-content p {
  font-size: 0.92rem;
  line-height: 1.65;
}

/* ═══════════════════════════════════════════
   MATERIALS
═══════════════════════════════════════════ */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.material-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--ease-base);
}
.material-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.material-img {
  height: 220px;
  overflow: hidden;
}
.material-img img {
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease;
}
.material-card:hover .material-img img {
  transform: scale(1.04);
}

.material-info {
  padding: 1.5rem;
}

.material-badge {
  display: inline-block;
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
  background: rgba(0, 82, 255, 0.08);
  color: var(--grad-start);
}
.material-badge.premium {
  background: rgba(251, 191, 36, 0.12);
  color: #B45309;
}
.material-badge.nature {
  background: rgba(34, 197, 94, 0.1);
  color: #166534;
}

.material-info h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.6rem;
}

.material-info p {
  font-size: 0.88rem;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.material-specs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.material-specs span {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  background: var(--color-bg-warm);
  color: var(--color-text-mid);
  border: 1px solid var(--color-border);
}

/* ═══════════════════════════════════════════
   PROJECTS
═══════════════════════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 1rem;
  margin-bottom: 2rem;
}

.project-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.project-card.large {
  grid-column: 1 / 3;
  grid-row: 1;
}
.project-card:not(.large) {
  grid-row: auto;
}

.project-card img {
  width: 100%;
  height: 300px;
  transition: transform 0.5s ease;
}
.project-card.large img { height: 420px; }

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

.project-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.75rem 1.5rem 1.5rem;
  background: linear-gradient(to top, rgba(14,20,36,0.92) 0%, transparent 100%);
  transform: translateY(4px);
  transition: var(--ease-base);
}
.project-card:hover .project-overlay {
  transform: none;
}

.project-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  background: rgba(0,82,255,0.6);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.5rem;
}

.project-overlay h3 {
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.project-overlay p {
  color: rgba(255,255,255,0.6);
  font-size: 0.8rem;
}

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

/* ═══════════════════════════════════════════
   REVIEWS
═══════════════════════════════════════════ */
.dark-section {
  background: var(--color-bg-darker);
}

.reviews-aggregate {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.aggregate-stars {
  color: #FBBF24;
  font-size: 1.25rem;
  letter-spacing: 0.1em;
}

.aggregate-score {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-white);
}

.aggregate-count {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

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

.review-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--ease-base);
}
.review-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(77,124,255,0.3);
  transform: translateY(-2px);
}

.review-stars {
  color: #FBBF24;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.review-card blockquote {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  font-style: italic;
}

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

.reviewer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.reviewer strong {
  display: block;
  font-size: 0.9rem;
  color: var(--color-white);
}

.reviewer span {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
}

/* ═══════════════════════════════════════════
   CONTACT
═══════════════════════════════════════════ */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.contact-info h3 {
  font-size: clamp(1.55rem, 2.2vw, 1.95rem);
  margin-bottom: 0.75rem;
}

.contact-info p {
  font-size: 1rem;
  margin-bottom: 0;
  color: var(--color-text-mid);
}

.contact-detail {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-detail:last-child {
  border-bottom: none;
}

.contact-detail strong {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
}

.contact-detail a,
.contact-detail span {
  font-size: 1rem;
  color: var(--color-text);
  font-weight: 600;
}

.contact-detail a:hover {
  color: var(--grad-start);
}

.contact-card-notes {
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
  color: var(--color-text-mid);
  font-size: 0.95rem;
}

.contact-card-notes strong {
  color: var(--color-text);
}

/* Form */
.contact-form-wrap {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: var(--shadow-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.03em;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: var(--ease-base);
  outline: none;
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--grad-start);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(0,82,255,0.1);
}

.form-group select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.5rem;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-disclaimer {
  font-size: 0.75rem;
  text-align: center;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

/* Form success */
.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1rem;
  padding: 3rem 2rem;
}
.form-success.visible {
  display: flex;
}
.form-success h3 {
  font-size: 1.5rem;
  color: var(--color-text);
}
.form-success p {
  font-size: 0.95rem;
  max-width: 320px;
}

/* ═══════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════ */
.footer {
  background: var(--color-bg-dark);
  padding-top: clamp(3rem, 6vw, 5rem);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 4rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--color-border-dark);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-logo-text {
  color: var(--color-white);
}

.footer-tagline {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.65;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  transition: var(--ease-base);
}
.footer-social a:hover {
  border-color: var(--grad-start);
  color: var(--color-white);
  background: rgba(0,82,255,0.15);
}

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

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1.25rem;
}

.footer-col a,
.footer-col span {
  display: block;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  padding: 0.3rem 0;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--color-white);
}

.footer-bottom {
  padding: 1.25rem 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}
.footer-bottom-links a {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  transition: color 0.2s;
}
.footer-bottom-links a:hover {
  color: rgba(255,255,255,0.65);
}

/* ─── SCROLL TO TOP ─── */
.scroll-top {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-blue);
  z-index: 900;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: var(--ease-base);
}
.scroll-top.visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,82,255,0.4);
}

/* ═══════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════ */

/* Tablet: ≤ 1024px */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: calc(var(--nav-height) + 2rem);
    padding-bottom: 2.5rem;
    gap: 2rem;
  }
  .hero-visual {
    grid-column: 1;
    grid-row: auto;
    width: 100%;
    min-height: 360px;
    height: auto;
  }
  .hero-img-wrapper {
    height: 380px;
    min-height: 380px;
  }
  .hero-badge,
  .hero-headline,
  .hero-sub,
  .hero-actions,
  .hero-stats {
    grid-column: 1;
  }
  .hero-stats {
    width: 100%;
    justify-content: space-around;
    gap: 0;
  }

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

  .feature-band-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .project-card.large {
    grid-column: 1 / 3;
  }

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

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

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

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

  /* Override nav-header height for mobile with menu open */
  .nav-header.menu-open {
    height: auto;
  }

  .hero-stats {
    gap: 0;
    padding: 1.25rem 1.5rem;
  }
  .stat-item {
    padding: 0 1rem;
  }
  .stat-item:first-child { padding-left: 0; }
  .stat-item:last-child  { padding-right: 0; }
  .stat-number { font-size: 1.35rem; }
  .stat-label { font-size: 0.65rem; }
  .stat-divider { height: 32px; }

  .trust-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }
  .trust-logos {
    gap: 1.25rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .feature-band-cards {
    grid-template-columns: 1fr;
  }

  .process-step {
    gap: 1.25rem;
  }

  .materials-grid {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }
  .project-card.large {
    grid-column: 1;
  }
  .project-card img,
  .project-card.large img {
    height: 260px;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-actions a {
    width: 100%;
    justify-content: center;
  }
}

/* Small mobile: ≤ 480px */
@media (max-width: 480px) {
  .hero-stats {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .stat-divider { display: none; }
  .stat-item {
    padding: 0;
    width: 45%;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }
}

/* ═══════════════════════════════════════════
   ACCESSIBILITY
═══════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .badge-dot {
    animation: none;
  }
}

:focus-visible {
  outline: 2px solid var(--grad-start);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ═══════════════════════════════════════════
   POLICY PAGES (Privacy Policy & Terms of Service)
═══════════════════════════════════════════ */
.policy-header {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.contents-list {
  margin-top: 1rem;
}

.contents-list ol {
  padding-left: 1.5rem;
}

.contents-list li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.contents-list a {
  color: var(--grad-start);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

.contents-list a:hover {
  color: var(--grad-end);
  text-decoration: underline;
}

.policy-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--color-bg-warm);
  border-radius: var(--radius-md);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.meta-item strong {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
}

.meta-item span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--grad-start);
}

.policy-content {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.policy-content section {
  margin-bottom: 2.5rem;
}

.policy-content section:last-child {
  margin-bottom: 0;
}

.policy-content h2 {
  font-size: 1.4rem;
  color: var(--color-text);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--grad-start);
}

.policy-content p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.policy-content ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.policy-content li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.contact-details {
  background: rgba(0, 82, 255, 0.04);
  border: 1px solid rgba(0, 82, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 1rem;
}

.contact-details p {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.contact-details strong {
  color: var(--grad-start);
}

/* Mobile styles for policy pages */
@media (max-width: 768px) {
  .policy-header {
    padding: 1.5rem;
  }

  .policy-meta {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }

  .policy-content {
    padding: 1.5rem;
  }

  .contents-list ol {
    padding-left: 1rem;
  }
}