/* ============================================
   FRESHCLEAN — Cleaning Service Landing Page
   Design System: Crystalline Fresh
   Stack: Vanilla CSS (no frameworks)
   ============================================ */

/* --- 1. Design Tokens --- */
:root {
  /* Colors */
  --color-canvas: #F7FAFA;
  --color-surface: #FFFFFF;
  --color-primary: #0D9488;
  --color-primary-hover: #0F766E;
  --color-primary-light: #CCFBF1;
  --color-primary-ultra-light: #F0FDFA;
  --color-text: #0F172A;
  --color-text-body: #334155;
  --color-text-muted: #64748B;
  --color-border: #E2E8F0;
  --color-border-focus: rgba(13, 148, 136, 0.35);
  --color-star: #F59E0B;
  --color-error: #EF4444;
  --color-error-bg: #FEF2F2;
  --color-success: #10B981;
  --color-success-bg: #ECFDF5;
  --color-footer-bg: #0F172A;
  --color-footer-text: #94A3B8;
  --color-footer-text-hover: #F1F5F9;

  /* Spacing */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 100px;

  /* Transitions */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --duration-fast: 160ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-entrance: 700ms;

  /* Shadows — tinted toward teal, not pure black */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.03);
  --shadow-sm: 0 1px 4px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.08);
  --shadow-card-hover: 0 12px 32px rgba(13, 148, 136, 0.1);
  --shadow-nav: 0 4px 24px rgba(15, 23, 42, 0.06);

  /* Container */
  --container-max: 1200px;
  --container-padding: 1.25rem;

  /* Nav height for scroll offset */
  --nav-height: 80px;
}


/* --- 2. Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text-body);
  background-color: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, select, textarea {
  font: inherit;
  color: inherit;
}

::selection {
  background: var(--color-primary-light);
  color: var(--color-text);
}


/* --- 3. Typography --- */
h1, h2, h3, h4 {
  font-family: 'Sora', system-ui, sans-serif;
  color: var(--color-text);
  line-height: 1.15;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
}

h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
}

p {
  max-width: 65ch;
}

strong {
  font-weight: 600;
}


/* --- 4. Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

.section-header {
  margin-bottom: var(--space-3xl);
}

.section-header p {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

.section-label {
  display: inline-block;
  font-family: 'Sora', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-ultra-light);
  border: 1px solid var(--color-primary-light);
  padding: 0.375rem 1rem;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-md);
}


/* --- 5. Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(13, 148, 136, 0.25);
}

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

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

.btn-ghost {
  background: transparent;
  color: var(--color-text-body);
  border-color: transparent;
  padding: 0.875rem 1rem;
}

.btn-ghost:hover {
  color: var(--color-primary);
  background: var(--color-primary-ultra-light);
}

.btn-sm {
  font-size: 0.8125rem;
  padding: 0.625rem 1.25rem;
}

.btn-lg {
  font-size: 1rem;
  padding: 1rem 2rem;
}

.btn-full {
  width: 100%;
}

.btn-icon {
  width: 2rem;
  height: 2rem;
  padding: 0;
  border-radius: 50%;
  flex-shrink: 0;
}

.btn svg {
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
}


/* --- 6. Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: 'Sora', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 200;
  transition: top var(--duration-normal) var(--ease-out);
}

.skip-link:focus {
  top: 1rem;
}


/* --- 7. Navigation --- */
.nav-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0.75rem var(--container-padding);
  transition: padding var(--duration-normal) var(--ease-out);
}

.nav {
  max-width: var(--container-max);
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(226, 232, 240, 0.5);
  border-radius: var(--radius-lg);
  padding: 0.625rem 0.75rem 0.625rem 1.25rem;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              border-radius var(--duration-normal) var(--ease-out);
}

.nav-wrapper.scrolled .nav {
  box-shadow: var(--shadow-nav);
  border-color: rgba(226, 232, 240, 0.8);
}

.nav-logo {
  font-family: 'Sora', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.nav-logo span {
  color: var(--color-primary);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-2xs);
  margin-left: auto;
}

.nav-links a {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-body);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out);
}

.nav-links a:hover {
  color: var(--color-primary);
  background: var(--color-primary-ultra-light);
}

.nav-actions {
  display: none;
  align-items: center;
  gap: var(--space-xs);
  margin-left: auto;
}

.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-body);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.nav-phone svg {
  width: 1rem;
  height: 1rem;
}

/* Burger */
.nav-burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  margin-left: auto;
  transition: background var(--duration-fast) var(--ease-out);
  position: relative;
  z-index: 110;
}

.nav-burger:hover {
  background: var(--color-primary-ultra-light);
}

.nav-burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

/* Burger → X animation */
body.menu-open .nav-burger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

body.menu-open .nav-burger span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

body.menu-open .nav-burger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  padding: var(--space-3xl) var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal) var(--ease-out);
}

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

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.mobile-menu-links a {
  font-family: 'Sora', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease-out);
  opacity: 0;
  transform: translateY(16px);
}

body.menu-open .mobile-menu-links a {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

body.menu-open .mobile-menu-links li:nth-child(1) a { transition-delay: 80ms; }
body.menu-open .mobile-menu-links li:nth-child(2) a { transition-delay: 140ms; }
body.menu-open .mobile-menu-links li:nth-child(3) a { transition-delay: 200ms; }
body.menu-open .mobile-menu-links li:nth-child(4) a { transition-delay: 260ms; }

.mobile-menu-links a:hover {
  color: var(--color-primary);
}

.mobile-menu-phone {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  opacity: 0;
  transform: translateY(12px);
}

body.menu-open .mobile-menu-phone {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--duration-slow) var(--ease-out) 320ms,
              transform var(--duration-slow) var(--ease-out) 320ms;
}

.mobile-menu .btn {
  opacity: 0;
  transform: translateY(12px);
}

body.menu-open .mobile-menu .btn {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--duration-slow) var(--ease-out) 380ms,
              transform var(--duration-slow) var(--ease-out) 380ms,
              background var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}


/* --- 8. Hero Section --- */
.hero {
  position: relative;
  padding-top: calc(var(--nav-height) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -15%;
  right: -10%;
  width: 55%;
  height: 75%;
  background: radial-gradient(ellipse at center, rgba(13, 148, 136, 0.045) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-title {
  margin-top: var(--space-md);
}

.hero-subtitle {
  margin-top: var(--space-lg);
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 50ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

/* Hero image placeholder */
.hero-image-wrapper {
  position: relative;
}

.hero-image-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #E2E8F0 0%, #F1F5F9 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--space-xl);
  border: 1px dashed var(--color-border);
}

.hero-image-placeholder span {
  max-width: 32ch;
}

/* Real hero image */
.hero-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  object-fit: cover;
  object-position: center;
  display: block;
}


/* --- 9. Trust Strip --- */
.trust-strip {
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg) var(--space-xl);
}

.trust-item {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.trust-number {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

.trust-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-weight: 500;
}


/* --- 10. Services Section --- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary-light);
}

.service-icon-placeholder {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-ultra-light);
  border: 1px dashed var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  flex-shrink: 0;
}

.service-card h3 {
  margin-bottom: var(--space-xs);
}

.service-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.service-price {
  font-family: 'Sora', sans-serif;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-primary);
}

.service-image-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #E2E8F0 0%, #F1F5F9 100%);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--space-md);
  border: 1px dashed var(--color-border);
}

/* Real service card images */
.service-card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-md);
  object-fit: cover;
  object-position: center;
  display: block;
  margin-bottom: var(--space-lg);
}


/* --- 11. Calculator Section --- */
.calc-section {
  background: var(--color-primary-ultra-light);
}

.calc-wizard {
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

/* Progress bar */
.calc-progress {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--space-2xl);
  padding: 0 var(--space-md);
}

.calc-step {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.calc-step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Sora', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  background: var(--color-canvas);
  color: var(--color-text-muted);
  border: 2px solid var(--color-border);
  transition: all var(--duration-normal) var(--ease-out);
}

.calc-step.active .calc-step-number {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

.calc-step.completed .calc-step-number {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.calc-step-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  display: none;
  transition: color var(--duration-normal) var(--ease-out);
}

.calc-step.active .calc-step-label {
  color: var(--color-text);
}

.calc-step.completed .calc-step-label {
  color: var(--color-primary);
}

.calc-step-line {
  flex: 1;
  height: 2px;
  background: var(--color-border);
  margin: 0 var(--space-sm);
  border-radius: 1px;
  min-width: 24px;
  max-width: 64px;
  transition: background var(--duration-normal) var(--ease-out);
}

.calc-step-line.active {
  background: var(--color-primary);
}

/* Calculator panels */
.calc-panel {
  display: none;
}

.calc-panel.active {
  display: block;
  animation: panelFadeIn var(--duration-slow) var(--ease-out);
}

@keyframes panelFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.calc-panel-title {
  font-family: 'Sora', sans-serif;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  text-align: center;
}

/* Step 1: Type selection grid */
.calc-type-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.calc-type-card {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  background: var(--color-surface);
}

.calc-type-card:hover {
  border-color: var(--color-primary-light);
  background: var(--color-primary-ultra-light);
}

.calc-type-card.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-ultra-light);
  box-shadow: 0 0 0 3px var(--color-border-focus);
}

.calc-type-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calc-type-radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  margin-top: 2px;
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.calc-type-card.selected .calc-type-radio {
  border-color: var(--color-primary);
}

.calc-type-card.selected .calc-type-radio::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--color-primary);
}

.calc-type-info h4 {
  margin-bottom: 0.25rem;
}

.calc-type-info p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Step 2: Area input */
.calc-area-wrapper {
  text-align: center;
}

.calc-area-input-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.calc-area-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.calc-area-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-ultra-light);
}

.calc-area-btn:active {
  transform: scale(0.93);
}

.calc-area-field {
  width: 100px;
  text-align: center;
  font-family: 'Sora', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  border: none;
  border-bottom: 2px solid var(--color-border);
  background: transparent;
  padding: var(--space-xs) 0;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
  -moz-appearance: textfield;
}

.calc-area-field::-webkit-inner-spin-button,
.calc-area-field::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

.calc-area-field:focus {
  border-color: var(--color-primary);
}

.calc-area-unit {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.calc-presets {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}

.calc-preset-btn {
  font-family: 'Sora', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text-body);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.calc-preset-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-ultra-light);
}

.calc-preset-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
}

.calc-preset-btn:active {
  transform: scale(0.95);
}

.calc-price-preview {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  padding: var(--space-md);
  background: var(--color-canvas);
  border-radius: var(--radius-md);
  text-align: center;
}

.calc-price-preview strong {
  font-family: 'Sora', sans-serif;
  color: var(--color-primary);
  font-size: 1.125rem;
}

/* Step 3: Extras */
.calc-extras-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.calc-extra-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  background: var(--color-surface);
}

.calc-extra-card:hover {
  border-color: var(--color-primary-light);
  background: var(--color-primary-ultra-light);
}

.calc-extra-card.checked {
  border-color: var(--color-primary);
  background: var(--color-primary-ultra-light);
}

.calc-extra-card input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calc-extra-check {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--ease-out);
}

.calc-extra-card.checked .calc-extra-check {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.calc-extra-check svg {
  width: 12px;
  height: 12px;
  stroke: #FFFFFF;
  stroke-width: 3;
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--duration-fast) var(--ease-out);
}

.calc-extra-card.checked .calc-extra-check svg {
  opacity: 1;
  transform: scale(1);
}

.calc-extra-info {
  flex: 1;
}

.calc-extra-info h4 {
  font-size: 0.9375rem;
  margin-bottom: 0;
}

.calc-extra-price {
  font-family: 'Sora', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* Calculator navigation */
.calc-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-xl);
  gap: var(--space-md);
}

.calc-nav-spacer {
  flex: 1;
}

/* Calculator result */
.calc-result-display {
  text-align: center;
  padding: var(--space-xl) 0;
}

.calc-result-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.calc-result-price {
  font-family: 'Sora', sans-serif;
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.calc-result-price::after {
  content: ' zł';
  font-size: 0.6em;
  font-weight: 600;
}

.calc-result-breakdown {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2xs);
}

.calc-result-note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: var(--space-xl);
}

.calc-result-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.calc-result-actions .btn-primary {
  min-width: 260px;
}

.calc-result-phone {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-body);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  transition: color var(--duration-fast) var(--ease-out);
}

.calc-result-phone:hover {
  color: var(--color-primary);
}

.calc-result-phone svg {
  width: 1rem;
  height: 1rem;
}

.calc-restart {
  margin-top: var(--space-lg);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  border: none;
  background: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.calc-restart:hover {
  color: var(--color-primary);
}


/* --- 12. Why Us Section --- */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.benefit-card {
  padding: var(--space-xl) 0;
  border-top: 2px solid var(--color-primary-light);
  position: relative;
}

.benefit-number {
  font-family: 'Sora', sans-serif;
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-primary-ultra-light);
  line-height: 1;
  position: absolute;
  top: var(--space-md);
  right: 0;
  user-select: none;
  pointer-events: none;
}

.benefit-card h3 {
  margin-bottom: var(--space-xs);
  position: relative;
}

.benefit-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  position: relative;
  line-height: 1.6;
}


/* --- 13. Testimonials --- */
.testimonials-header {
  margin-top: var(--space-4xl);
  margin-bottom: var(--space-2xl);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.testimonial-card {
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
}

.testimonial-quote {
  font-size: 2.5rem;
  font-family: 'Sora', sans-serif;
  color: var(--color-primary-light);
  line-height: 1;
  margin-bottom: var(--space-sm);
  user-select: none;
}

.testimonial-text {
  font-size: 0.9375rem;
  color: var(--color-text-body);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.testimonial-name {
  font-family: 'Sora', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

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

.testimonial-stars {
  display: flex;
  gap: 2px;
  color: var(--color-star);
  font-size: 0.875rem;
}


/* --- 14. Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: var(--space-lg);
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-border-focus);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-error-text {
  font-size: 0.8125rem;
  color: var(--color-error);
  display: none;
}

.form-group.has-error .form-error-text {
  display: block;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 6L8 10L12 6' stroke='%2364748B' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
  cursor: pointer;
}

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

/* Form success state */
.form-success {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  animation: panelFadeIn var(--duration-slow) var(--ease-out);
}

.form-success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-success-bg);
  color: var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  font-size: 1.75rem;
}

.form-success h3 {
  margin-bottom: var(--space-xs);
}

.form-success p {
  color: var(--color-text-muted);
  margin: 0 auto;
}

/* Contact info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-ultra-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-icon svg {
  width: 18px;
  height: 18px;
}

.contact-info-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.contact-info-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
}

.contact-info-value a {
  transition: color var(--duration-fast) var(--ease-out);
}

.contact-info-value a:hover {
  color: var(--color-primary);
}

.contact-hours {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-canvas);
  border-radius: var(--radius-md);
}

.contact-hours h4 {
  margin-bottom: var(--space-md);
}

.contact-hours-grid {
  display: grid;
  gap: var(--space-xs);
}

.contact-hours-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
}

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

.contact-hours-time {
  font-weight: 600;
  color: var(--color-text);
}

/* Map container */
.contact-map {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-xl);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  display: block;
}


/* --- 15. Footer --- */
.footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-xl);
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(148, 163, 184, 0.15);
}

.footer-logo {
  font-family: 'Sora', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-footer-text-hover);
  margin-bottom: var(--space-sm);
  display: block;
}

.footer-logo span {
  color: var(--color-primary);
}

.footer-brand p {
  font-size: 0.875rem;
  max-width: 30ch;
  line-height: 1.6;
}

.footer-nav h4,
.footer-contact h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-footer-text-hover);
  margin-bottom: var(--space-md);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-nav a {
  font-size: 0.875rem;
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-contact p {
  font-size: 0.875rem;
  margin-bottom: var(--space-2xs);
}

.footer-contact a {
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  font-size: 0.8125rem;
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  transition: color var(--duration-fast) var(--ease-out);
}

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


/* --- 16. Scroll Animations --- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-entrance) var(--ease-out),
              transform var(--duration-entrance) var(--ease-out);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays via inline custom property */
.animate-on-scroll[style*="--delay"] {
  transition-delay: var(--delay);
}


/* --- 17. Media Queries --- */

/* Tablet (768px+) */
@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
  }

  .section {
    padding-top: var(--space-5xl);
    padding-bottom: var(--space-5xl);
  }

  .calc-step-label {
    display: block;
  }

  .calc-type-grid {
    grid-template-columns: 1fr 1fr;
  }

  .calc-extras-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .benefits-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

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

  .contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
  }

  .footer-top {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}


/* Desktop (1024px+) */
@media (min-width: 1024px) {
  :root {
    --nav-height: 88px;
  }

  .nav-wrapper {
    padding: 1rem var(--container-padding);
  }

  .nav {
    border-radius: var(--radius-pill);
    padding: 0.5rem 0.5rem 0.5rem 1.5rem;
  }

  .nav-links {
    display: flex;
  }

  .nav-actions {
    display: flex;
  }

  .nav-burger {
    display: none;
  }

  .hero {
    padding-top: calc(var(--nav-height) + var(--space-4xl));
    padding-bottom: var(--space-4xl);
  }

  .hero-inner {
    grid-template-columns: 55fr 45fr;
    gap: var(--space-3xl);
  }

  .hero-content {
    max-width: none;
  }

  .trust-strip {
    gap: var(--space-3xl);
  }

  /* Services: zig-zag asymmetry using 12-col grid */
  .services-grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 1.5rem;
  }

  .service-card:nth-child(1) { grid-column: 1 / 8; }
  .service-card:nth-child(2) { grid-column: 8 / 13; }
  .service-card:nth-child(3) { grid-column: 1 / 6; }
  .service-card:nth-child(4) { grid-column: 6 / 13; }

  .calc-wizard {
    padding: var(--space-2xl) var(--space-3xl);
  }

  .benefits-grid {
    gap: var(--space-2xl);
  }

  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Testimonial: middle card elevated */
  .testimonial-card:nth-child(2) {
    transform: translateY(-8px);
  }
}


/* Wide desktop (1280px+) */
@media (min-width: 1280px) {
  :root {
    --container-max: 1280px;
  }
}


/* --- 18. Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .mobile-menu-links a,
  .mobile-menu-phone,
  .mobile-menu .btn {
    opacity: 1;
    transform: none;
    transition: none;
  }
}