/* ==========================================================================
   MONOLITH GROUP - Design System & Modern UI/UX Styles
   Architectural Construction & Engineering Landing Page
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #0a0c10;
  --bg-secondary: #12161f;
  --bg-tertiary: #181e2b;
  --bg-card: rgba(22, 28, 40, 0.75);
  --bg-card-hover: rgba(28, 36, 52, 0.85);
  --bg-glass: rgba(13, 17, 25, 0.82);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-accent: rgba(217, 119, 6, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0a0c10;

  --accent-amber: #d97706;
  --accent-amber-light: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.25);
  
  --color-wa: #25d366;
  --color-wa-glow: rgba(37, 211, 102, 0.3);
  --color-success: #10b981;

  /* Typography */
  --font-heading: 'Syne', sans-serif;
  --font-body: 'Outfit', sans-serif;

  /* Spacing & Layout */
  --container-max: 1240px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 10px 30px rgba(217, 119, 6, 0.2);
  --shadow-elevated: 0 20px 40px rgba(0, 0, 0, 0.6);

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(ellipse at 80% 0%, rgba(217, 119, 6, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 50%, rgba(30, 41, 59, 0.3) 0%, transparent 50%);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   Top Announcement Bar
   ========================================================================== */
.top-bar {
  background: #07090c;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  padding: 0.45rem 0;
}

.top-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.top-bar__status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.top-bar__contact {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

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

.top-bar__phone {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 500;
  color: var(--text-primary);
}

.top-bar__phone:hover {
  color: var(--accent-amber-light);
}

.top-bar__wa {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-wa);
  font-weight: 600;
}

.top-bar__wa:hover {
  filter: brightness(1.2);
}

/* ==========================================================================
   Header Navigation (Glassmorphic)
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo__mark {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent-amber), #b45309);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-amber-glow);
}

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

.brand-logo__name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.05em;
  color: #ffffff;
}

.brand-logo__desc {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
}

.nav-menu__list {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.highlight {
  color: var(--accent-amber-light);
}

.nav-link.highlight::after {
  content: 'LIVE';
  display: inline-block;
  font-size: 0.55rem;
  padding: 1px 4px;
  background: var(--accent-amber);
  color: #fff;
  border-radius: 4px;
  margin-left: 5px;
  vertical-align: top;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.header__phone-box {
  display: flex;
  flex-direction: column;
  text-align: right;
}

.phone-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header__phone-link {
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 24px;
  flex-direction: column;
  justify-content: space-between;
}

.mobile-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s;
}

/* ==========================================================================
   Buttons & Interactive Elements
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent-amber-light), var(--accent-amber));
  color: #0b0d12;
  box-shadow: 0 4px 15px rgba(217, 119, 6, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(217, 119, 6, 0.5);
  filter: brightness(1.08);
}

.btn--glow {
  position: relative;
  overflow: hidden;
}

.btn--wa {
  background: #25d366;
  color: #ffffff;
  box-shadow: 0 4px 15px var(--color-wa-glow);
}

.btn--wa:hover {
  background: #20ba5a;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.45);
}

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

.btn--outline:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber-light);
  background: rgba(217, 119, 6, 0.05);
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

.btn--block {
  width: 100%;
}

.btn-link {
  background: none;
  border: none;
  color: var(--accent-amber-light);
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: transform var(--transition-fast);
}

.btn-link:hover {
  transform: translateX(4px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  padding: 6rem 0 5rem 0;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  filter: brightness(0.65) contrast(1.1);
  transform: scale(1.02);
  transition: transform 10s ease;
}

.hero:hover .hero__image {
  transform: scale(1.06);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 12, 16, 0.85) 0%,
    rgba(10, 12, 16, 0.6) 40%,
    rgba(10, 12, 16, 0.95) 100%
  );
}

.hero__glow-sphere {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(217, 119, 6, 0.25) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-medium);
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #f1f5f9;
  margin-bottom: 1.75rem;
  backdrop-filter: blur(8px);
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-amber-light);
  border-radius: 50%;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: #ffffff;
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 40%, var(--accent-amber-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: #cbd5e1;
  max-width: 720px;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero__cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 4rem;
}

.hero__metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.metric-card__value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-amber-light);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.metric-card__label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   Section Common Styles
   ========================================================================== */
.section {
  padding: 6.5rem 0;
  position: relative;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-header.text-center {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-body);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  font-weight: 700;
  color: var(--accent-amber-light);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  color: #ffffff;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Interactive Cost Calculator
   ========================================================================== */
.calculator-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.calculator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-elevated);
  backdrop-filter: blur(20px);
}

.calculator-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 3rem;
}

.calc-group {
  margin-bottom: 2rem;
}

.calc-label {
  display: block;
  font-weight: 700;
  font-size: 0.9375rem;
  color: #ffffff;
  margin-bottom: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.calc-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}

.calc-badge-val {
  background: rgba(217, 119, 6, 0.2);
  color: var(--accent-amber-light);
  border: 1px solid var(--border-accent);
  padding: 0.2rem 0.75rem;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 1.125rem;
}

/* Options Grid / Buttons */
.calc-options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.calc-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 1rem 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
  transition: all var(--transition-fast);
}

.calc-pill .icon {
  font-size: 1.5rem;
}

.calc-pill .text {
  font-size: 0.8125rem;
  font-weight: 600;
}

.calc-pill:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-medium);
  color: #fff;
}

.calc-pill.active {
  background: rgba(217, 119, 6, 0.15);
  border-color: var(--accent-amber);
  color: #fff;
  box-shadow: 0 0 15px rgba(217, 119, 6, 0.2);
}

/* Range Slider */
.range-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #252d3d;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-amber-light);
  box-shadow: 0 0 12px var(--accent-amber-glow);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.range-limits {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* Radio Group */
.calc-radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.radio-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.15rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.radio-card input {
  accent-color: var(--accent-amber);
  width: 18px;
  height: 18px;
}

.radio-card__body {
  display: flex;
  flex-direction: column;
}

.radio-card__title {
  font-weight: 600;
  font-size: 0.9375rem;
  color: #ffffff;
}

.radio-card__sub {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.radio-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-medium);
}

.radio-card.active {
  border-color: var(--accent-amber);
  background: rgba(217, 119, 6, 0.08);
}

/* Tier Selector */
.tier-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.tier-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.tier-name {
  font-weight: 700;
  font-size: 0.875rem;
  color: #fff;
}

.tier-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.tier-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--border-medium);
}

.tier-btn.active {
  background: rgba(217, 119, 6, 0.15);
  border-color: var(--accent-amber);
  box-shadow: 0 0 15px rgba(217, 119, 6, 0.15);
}

/* Calculator Result Column */
.calc-result-box {
  display: flex;
  flex-direction: column;
}

.result-card {
  background: linear-gradient(145deg, #182030, #10141e);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.result-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.result-card__badge {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--accent-amber-light);
}

.result-card__currency {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.result-card__main-price {
  margin-bottom: 1.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.price-usd {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.price-uah {
  font-size: 1.125rem;
  color: var(--accent-amber-light);
  font-weight: 600;
  margin-top: 0.35rem;
}

.result-breakdown {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
}

.breakdown-item .label {
  color: var(--text-secondary);
}

.breakdown-item .val {
  font-weight: 600;
  color: #ffffff;
}

.text-success {
  color: var(--color-success) !important;
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.result-guarantee-note {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.result-guarantee-note svg {
  flex-shrink: 0;
  color: var(--color-success);
}

/* ==========================================================================
   Before / After Interactive Comparison Slider
   ========================================================================== */
.before-after-section {
  background: var(--bg-primary);
}

.comparison-container {
  position: relative;
  width: 100%;
  max-width: 1000px;
  height: 520px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
  border: 1px solid var(--border-medium);
  user-select: none;
  touch-action: none;
}

.comparison-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.comparison-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.comparison-before {
  width: 50%;
  overflow: hidden;
  border-right: 2px solid var(--accent-amber-light);
  z-index: 2;
}

.comparison-before img {
  width: 1000px;
  max-width: none;
}

.comparison-label {
  position: absolute;
  bottom: 1.5rem;
  padding: 0.4rem 1rem;
  background: rgba(10, 12, 16, 0.85);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  color: #fff;
  backdrop-filter: blur(8px);
}

.label-after {
  right: 1.5rem;
}

.label-before {
  left: 1.5rem;
  z-index: 3;
}

.comparison-handle {
  position: absolute;
  top: 0;
  left: 50%;
  width: 44px;
  height: 100%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: ew-resize;
  z-index: 10;
}

.handle-line {
  position: absolute;
  width: 2px;
  height: 100%;
  background: var(--accent-amber-light);
}

.handle-arrow-left, .handle-arrow-right {
  position: relative;
  z-index: 2;
  width: 38px;
  height: 38px;
  background: var(--accent-amber-light);
  color: #0b0d12;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: bold;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  gap: 4px;
}

.handle-arrow-right {
  display: none;
}

/* ==========================================================================
   Services Grid
   ========================================================================== */
.services-section {
  background: var(--bg-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
  transform: translateY(-6px);
  box-shadow: var(--shadow-subtle);
}

.service-card--featured {
  border-color: var(--accent-amber);
  background: linear-gradient(160deg, rgba(217, 119, 6, 0.08) 0%, rgba(22, 28, 40, 0.9) 100%);
}

.service-card__badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-amber-light);
  background: rgba(217, 119, 6, 0.2);
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  border: 1px solid var(--border-accent);
}

.service-card__icon {
  font-size: 2.25rem;
  margin-bottom: 1.25rem;
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.85rem;
}

.service-card__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #cbd5e1;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.service-card__features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-card__features li::before {
  content: '✓';
  color: var(--accent-amber-light);
  font-weight: bold;
}

/* ==========================================================================
   Portfolio Section
   ========================================================================== */
.portfolio-tabs {
  display: flex;
  gap: 0.65rem;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.tab-btn {
  background: none;
  border: none;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: #fff;
}

.tab-btn.active {
  background: var(--accent-amber);
  color: #0b0d12;
  box-shadow: 0 2px 10px rgba(217, 119, 6, 0.3);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-elevated);
}

.project-card__img-box {
  position: relative;
  height: 260px;
  overflow: hidden;
}

.project-card__img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.project-card:hover .project-card__img-box img {
  transform: scale(1.08);
}

.project-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(10, 12, 16, 0.85);
  border: 1px solid var(--border-medium);
  color: #fff;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.project-card__body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
}

.project-card__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
}

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

/* ==========================================================================
   Standards & Guarantee Section
   ========================================================================== */
.standards-section {
  background: var(--bg-primary);
}

.standards-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.standards-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin-top: 2rem;
}

.standard-item {
  display: flex;
  gap: 1.5rem;
}

.standard-num {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-amber-light);
  line-height: 1;
}

.standard-text h4 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.35rem;
}

.standard-text p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.media-card-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
  border: 1px solid var(--border-medium);
}

.media-card-wrap img {
  width: 100%;
  height: 520px;
  object-fit: cover;
}

.floating-stat-box {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  right: 2rem;
  background: rgba(12, 16, 24, 0.9);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(16px);
}

.floating-stat-box .stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-amber-light);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.floating-stat-box .stat-title {
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  display: block;
  margin-bottom: 0.35rem;
}

.floating-stat-box p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   Process Timeline
   ========================================================================== */
.process-section {
  background: var(--bg-secondary);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.step-card:hover {
  border-color: var(--accent-amber);
  transform: translateY(-5px);
}

.step-badge {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--accent-amber-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.step-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.step-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
}

/* ==========================================================================
   Reviews Section
   ========================================================================== */
.reviews-section {
  background: var(--bg-primary);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
}

.review-stars {
  color: var(--accent-amber-light);
  font-size: 1.125rem;
  margin-bottom: 1.25rem;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.9375rem;
  color: #cbd5e1;
  line-height: 1.65;
  font-style: italic;
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.avatar-placeholder {
  width: 46px;
  height: 46px;
  background: rgba(217, 119, 6, 0.2);
  border: 1px solid var(--border-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--accent-amber-light);
  font-size: 0.9375rem;
}

.author-name {
  font-weight: 700;
  color: #fff;
  font-size: 0.9375rem;
}

.author-role {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Contact Section & Form
   ========================================================================== */
.contact-section {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #06070a 100%);
}

.contact-box {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 3.5rem;
  box-shadow: var(--shadow-elevated);
}

.contact-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.contact-detail-item {
  display: flex;
  gap: 1.25rem;
}

.icon-circle {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-detail-item strong {
  display: block;
  font-size: 0.9375rem;
  color: #fff;
  margin-bottom: 0.25rem;
}

.contact-detail-item p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.link-wa {
  color: var(--color-wa);
  font-weight: 600;
}

/* Lead Form */
.contact-form-card {
  background: rgba(14, 18, 26, 0.75);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
}

.form-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.form-sub {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  line-height: 1.45;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #cbd5e1;
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  color: #fff;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-amber);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.2);
}

.form-group select option {
  background: #121620;
  color: #fff;
}

.form-privacy {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

.form-success-box {
  text-align: center;
  padding: 2rem 1rem;
}

.success-icon {
  width: 60px;
  height: 60px;
  background: var(--color-success);
  color: #fff;
  font-size: 2rem;
  font-weight: bold;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

.form-success-box h4 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.form-success-box p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
}

.mt-3 {
  margin-top: 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: #050608;
  border-top: 1px solid var(--border-subtle);
  padding: 4.5rem 0 2rem 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer__about {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 1.25rem 0;
}

.footer__licenses {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.25rem;
}

.footer__links,
.footer__contacts {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer__links a:hover,
.footer__contacts a:hover {
  color: var(--accent-amber-light);
}

.footer__contacts strong {
  color: #fff;
  font-size: 0.8125rem;
}

.footer__sub {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.footer__bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

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

/* ==========================================================================
   Floating Conversion Bar (Rule #2 Conversion Pillars)
   ========================================================================== */
.floating-conversion-bar {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.float-btn {
  position: relative;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  transition: all var(--transition-fast);
}

.float-btn--wa {
  background: #25d366;
  color: #fff;
  box-shadow: 0 6px 20px var(--color-wa-glow);
  animation: float-pulse-wa 3s infinite;
}

@keyframes float-pulse-wa {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 14px rgba(37, 211, 102, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

.float-btn--phone {
  background: var(--bg-tertiary);
  color: var(--accent-amber-light);
  border: 1px solid var(--border-accent);
}

.float-btn:hover {
  transform: translateY(-4px) scale(1.08);
}

.float-btn__tooltip {
  position: absolute;
  right: 70px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(10, 12, 16, 0.9);
  color: #fff;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  border: 1px solid var(--border-subtle);
  transition: opacity 0.2s;
}

.float-btn:hover .float-btn__tooltip {
  opacity: 1;
}

/* ==========================================================================
   Modern HTML5 <dialog> Modals
   ========================================================================== */
.modal-dialog {
  margin: auto;
  border: none;
  background: transparent;
  padding: 0;
  max-width: 520px;
  width: calc(100% - 2rem);
  color: var(--text-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
}

.modal-dialog--wide {
  max-width: 860px;
}

.modal-dialog::backdrop {
  background: rgba(5, 7, 10, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.modal-dialog__content {
  position: relative;
  background: #11151f;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.16);
}

.modal-header {
  margin-bottom: 1.75rem;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.5rem;
}

.modal-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.project-modal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.project-modal-media img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.project-modal-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
}

.project-modal-details {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 1024px) {
  .calculator-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .standards-wrapper {
    grid-template-columns: 1fr;
  }

  .media-card-wrap img {
    height: 380px;
  }

  .contact-box {
    grid-template-columns: 1fr;
    padding: 2.5rem;
  }

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

@media (max-width: 768px) {
  .top-bar__status,
  .work-hours {
    display: none;
  }

  .header__inner {
    height: 70px;
  }

  .header__phone-box {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-medium);
    padding: 2rem 1.5rem;
    display: none;
  }

  .nav-menu.active {
    display: block;
  }

  .nav-menu__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .mobile-toggle {
    display: flex;
  }

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

  .calc-options-grid,
  .tier-selector {
    grid-template-columns: 1fr;
  }

  .comparison-container {
    height: 360px;
  }

  .project-modal-grid {
    grid-template-columns: 1fr;
  }

  .project-modal-media img {
    height: 220px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}