/* ===========================
   Oy Pystis Ab - Modern Website
   =========================== */

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

:root {
  --color-primary: #0f4c81;
  --color-primary-dark: #0a3560;
  --color-primary-light: #1a6bb5;
  --color-accent: #e8a838;
  --color-accent-dark: #c98a1e;
  --color-text: #2d3748;
  --color-text-light: #64748b;
  --color-text-white: #ffffff;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: 0.3s ease;
  --container: 1200px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Segoe UI', 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--color-primary-light);
}

ul {
  list-style: none;
}

.container {
  width: 75%;
  max-width: var(--container);
  margin: 0 auto;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  transition: all 0.4s ease;
  background: transparent;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  padding: 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  overflow: visible;
  clip-path: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3vw;
  transform: translateX(-10vw);
}

/* Logo: two versions stacked, crossfade */
.logo {
  position: relative;
  display: block;
  flex-shrink: 0;
  height: 120px;
  aspect-ratio: 1.758;
  transition: height 0.4s ease;
}

.logo img {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  object-fit: contain;
  object-position: left top;
  transition: opacity 0.4s ease;
}

.header.scrolled .logo img {
  object-position: left center;
}

.logo-white {
  opacity: 1;
}

.logo-dark {
  opacity: 0;
}

/* Scrolled: logo overflows the nav bar */
.header.scrolled .header-inner {
  height: 56px;
  overflow: visible;
}

.header.scrolled .logo {
  height: 80px;
  align-self: flex-start;
}

.header.scrolled .logo-white {
  opacity: 0;
}

.header.scrolled .logo-dark {
  opacity: 1;
}

.nav {
  margin-left: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-list a {
  color: var(--color-text-white);
  padding: 8px 0;
  border-radius: 0;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  border-bottom: 2px solid transparent;
}

.nav-list a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-list a.active {
  border-bottom-color: white;
}

/* Scrolled: dark text nav */
.header.scrolled .nav-list a {
  color: var(--color-text);
}

.header.scrolled .nav-list a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.header.scrolled .nav-list a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-cta {
  background: var(--color-accent) !important;
  color: var(--color-bg-dark) !important;
  font-weight: 600 !important;
  padding: 10px 24px !important;
  border-radius: var(--radius-sm) !important;
}

.nav-cta:hover {
  background: var(--color-accent-dark) !important;
  color: var(--color-bg-dark) !important;
}

/* CTA stays same colors when scrolled */
.header.scrolled .nav-cta {
  color: var(--color-bg-dark) !important;
}

.header.scrolled .nav-cta:hover {
  color: var(--color-bg-dark) !important;
}

/* Section indicator (mobile only) */
.section-indicator {
  display: none;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: all 0.4s ease;
}

.header.scrolled .menu-toggle span {
  background: var(--color-text);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg-dark);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-bg-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232, 168, 56, 0.35);
}

.btn-outline {
  background: transparent;
  color: white;
  border-color: rgba(255,255,255,0.4);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
  color: white;
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.hero-left {
  background: linear-gradient(160deg, #0f172a 0%, #0f4c81 100%);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 140px 5% 80px 4%;
  position: relative;
  z-index: 1;
}



.hero-right {
  position: relative;
  overflow: hidden;
}

.hero-right::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(15,23,42,0.7) 0%, transparent 55%);
  pointer-events: none;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}



.hero-text {
  position: relative;
  z-index: 3;
  max-width: 540px;
  text-align: right;
}

.hero h1 {
  font-size: clamp(2.2rem, 3.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: white;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero .highlight {
  color: var(--color-accent);
  display: inline;
}

.hero-desc {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* --- Sections --- */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* --- Palvelut (Services) --- */
.palvelut {
  background: var(--color-bg-alt);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

@media (max-width: 1100px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.service-card {
  background: white;
  padding: 36px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

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

.service-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.service-icon svg {
  width: 26px;
  height: 26px;
  color: white;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.service-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.65;
}

.services-extra {
  margin-top: 48px;
  background: white;
  padding: 32px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent);
}

.services-extra p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* --- Kuvakaista --- */
.photo-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: 340px;
}

.photo-strip-item {
  position: relative;
  overflow: hidden;
}

.photo-strip-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.6s ease;
}

.photo-strip-item:hover img {
  transform: scale(1.04);
}

.photo-strip-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(15,23,42,0.35) 0%, rgba(15,23,42,0.1) 60%, rgba(15,23,42,0.4) 100%);
  pointer-events: none;
}

/* --- Referenssit (References) --- */
.referenssit {
  background: var(--color-bg);
}

.ref-intro {
  max-width: 800px;
  margin: 0 auto 48px;
  text-align: center;
}

.ref-intro p {
  color: var(--color-text-light);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Accordion */
.accordion {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.accordion-item:hover {
  border-color: rgba(15, 76, 129, 0.25);
}

.accordion-item.open {
  border-color: var(--color-primary);
  box-shadow: 0 2px 12px rgba(15, 76, 129, 0.08);
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  background: white;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition);
}

.accordion-header:hover {
  background: var(--color-bg-alt);
}

.accordion-item.open .accordion-header {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.accordion-year {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-primary);
  min-width: 60px;
}

.accordion-count {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-light);
  background: var(--color-bg-alt);
  padding: 4px 12px;
  border-radius: 100px;
}

.accordion-item.open .accordion-count {
  background: rgba(15, 76, 129, 0.08);
  color: var(--color-primary);
}

.accordion-chevron {
  width: 20px;
  height: 20px;
  margin-left: auto;
  color: var(--color-text-light);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.accordion-item.open .accordion-chevron {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.accordion-item.open .accordion-body {
  max-height: 2000px;
}

.ref-list {
  padding: 20px 24px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 32px;
}

.ref-list li {
  position: relative;
  padding: 8px 0 8px 20px;
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.5;
  border-bottom: 1px solid rgba(0,0,0,0.04);
}

.ref-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* Compact timeline for older years */
.timeline-heading {
  max-width: 900px;
  margin: 48px auto 20px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  padding-left: 24px;
  border-left: 2px solid var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 2px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 16px;
  width: 10px;
  height: 10px;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: 50%;
  transition: all var(--transition);
  z-index: 1;
}

.timeline-item.open::before {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.timeline-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition);
}

.timeline-header:hover {
  background: var(--color-bg-alt);
}

.timeline-year {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  min-width: 40px;
}

.timeline-count {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-light);
  background: var(--color-bg-alt);
  padding: 2px 10px;
  border-radius: 100px;
  white-space: nowrap;
}

.timeline-preview {
  font-size: 0.82rem;
  color: var(--color-text-light);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  text-align: left;
}

.timeline-item.open .timeline-preview {
  display: none;
}

.timeline-chevron {
  width: 16px;
  height: 16px;
  color: var(--color-text-light);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.timeline-item.open .timeline-chevron {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.timeline-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.timeline-item.open .timeline-body {
  max-height: 1500px;
}

.ref-list-compact {
  grid-template-columns: 1fr 1fr;
  gap: 2px 24px;
  padding: 8px 16px 16px;
}

.ref-list-compact li {
  font-size: 0.85rem;
  padding: 5px 0 5px 16px;
  border-bottom: none;
}

.ref-list-compact li::before {
  width: 4px;
  height: 4px;
  top: 13px;
}

/* --- Yritys (About) --- */
.yritys {
  background: var(--color-bg-alt);
}

.about-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
}

.about-text h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 18px;
  font-size: 1.02rem;
  line-height: 1.75;
}

.about-badges {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.badge-card {
  background: white;
  padding: 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.badge-card:hover {
  box-shadow: var(--shadow-md);
}

.badge-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.badge-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.badge-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.badge-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- Kohteet (Targets) --- */
.kohteet {
  background: linear-gradient(160deg, #0f172a 0%, #0f4c81 100%);
  color: white;
}

.kohteet-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.kohteet-text h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
  color: white;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1.05rem;
  color: rgba(255,255,255,0.9);
}

.check-list svg {
  width: 22px;
  height: 22px;
  min-width: 22px;
  color: var(--color-accent);
}

.kohteet-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.stat {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 40px 36px;
  border-radius: var(--radius-md);
  text-align: center;
  color: white;
  transition: transform var(--transition), background var(--transition);
}

.stat:hover {
  background: rgba(255,255,255,0.15);
}

.stat:hover {
  transform: translateY(-4px);
}

.stat-number {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.95rem;
  opacity: 0.85;
  font-weight: 500;
}

/* --- Yhteystiedot (Contact) --- */
.yhteystiedot {
  background: var(--color-bg-dark);
  color: white;
}

.yhteystiedot .section-header h2 {
  color: white;
}

.yhteystiedot .section-subtitle {
  color: rgba(255,255,255,0.65);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition);
}

.contact-card:hover {
  background: rgba(255,255,255,0.08);
}

.contact-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(232,168,56,0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
}

.contact-card h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.contact-name {
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
}

.contact-link {
  color: white;
  font-size: 1.05rem;
  font-weight: 600;
}

.contact-link:hover {
  color: var(--color-accent);
}

.contact-card p {
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Contact Form */
.contact-form-wrapper {
  background: rgba(255,255,255,0.05);
  padding: 40px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.08);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: rgba(255,255,255,0.8);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  color: white;
  font-size: 1rem;
  font-family: inherit;
  transition: all var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.3);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: rgba(255,255,255,0.08);
  box-shadow: 0 0 0 3px rgba(232,168,56,0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- Footer --- */
.footer {
  background: #080e1a;
  padding: 48px 0 0;
  color: rgba(255,255,255,0.6);
}

.footer-certs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.footer-certs img {
  height: 96px;
  width: auto;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity var(--transition);
}

.footer-certs img:hover {
  opacity: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 0.5fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo {
  height: 40px;
  margin-bottom: 16px;
  opacity: 0.8;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer h4 {
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-contact p {
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.footer-contact a {
  color: rgba(255,255,255,0.6);
}

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

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.6);
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--color-accent);
  color: var(--color-bg-dark);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
}

/* --- Scroll to top --- */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  box-shadow: var(--shadow-md);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-top svg {
  width: 22px;
  height: 22px;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-primary-light);
  transform: translateY(-3px);
}

/* --- Mobile section jump button --- */
.section-jump {
  display: none;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .ref-content,
  .about-content,
  .kohteet-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .container {
    width: 80%;
  }

  .section {
    padding: 72px 0;
  }

  .logo {
    height: 80px;
  }

  .header.scrolled .logo {
    height: 72px;
    align-self: flex-start;
  }

  .header-inner {
    transform: none;
    justify-content: space-between;
    padding: 0 24px;
    width: 100%;
  }

  .header.scrolled .header-inner {
    height: 48px;
    overflow: visible;
  }

  .section-indicator {
    display: block;
    flex: 1;
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: rgba(255,255,255,0.7);
    transition: color 0.4s ease, opacity 0.3s ease;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding: 0 12px;
  }

  .header.scrolled .section-indicator {
    color: var(--color-text-light);
  }

  .menu-toggle {
    display: flex;
    flex-shrink: 0;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    padding: 100px 32px 40px;
    transition: right var(--transition);
  }

  .nav-open {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    gap: 4px;
    align-items: stretch;
  }

  .nav-list a {
    display: block;
    padding: 14px 16px;
    font-size: 1.1rem;
    color: white;
  }

  .header.scrolled .nav-list a {
    color: white;
  }

  .header.scrolled .nav-list a:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
  }

  .header.scrolled .nav-list a.active {
    color: white;
    border-bottom-color: white;
  }

  .nav-cta {
    text-align: center;
    margin-top: 16px;
  }

  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto 40vh;
  }

  .hero-left {
    padding: 120px 24px 60px;
    justify-content: center;
  }

  .hero-left::after {
    display: none;
  }

  .hero-text {
    text-align: left;
    max-width: 100%;
  }

  .hero-actions {
    flex-direction: column;
    justify-content: flex-start;
  }

  .hero-actions .btn {
    text-align: center;
    width: 100%;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .service-card {
    padding: 24px 20px;
  }

  .ref-list {
    grid-template-columns: 1fr;
  }

  .ref-list-compact {
    grid-template-columns: 1fr;
  }

  .accordion-header {
    padding: 14px 18px;
  }

  .accordion-year {
    font-size: 1.2rem;
  }

  .ref-list {
    padding: 16px 18px 20px;
  }

  .timeline-preview {
    display: none;
  }

  .timeline {
    padding-left: 18px;
  }

  .timeline-item::before {
    left: -23px;
    width: 8px;
    height: 8px;
  }

  .photo-strip {
    grid-template-columns: 1fr;
    height: auto;
  }

  .photo-strip-item {
    height: 220px;
  }

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .kohteet-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .stat {
    padding: 24px 16px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .stat-label {
    font-size: 0.8rem;
  }

  .section-jump {
    display: flex;
    align-items: center;
    gap: 6px;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    z-index: 90;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 100px;
    padding: 10px 20px 10px 14px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
    transition: all 0.3s ease;
    font-family: inherit;
    opacity: 0;
    visibility: hidden;
  }

  .section-jump.visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

  .section-jump:active {
    transform: translateX(-50%) scale(0.95);
  }

  .section-jump.at-end {
    background: var(--color-accent);
    color: var(--color-bg-dark);
  }

  .section-jump.at-end .section-jump-arrow {
    transform: rotate(180deg);
  }

  .section-jump-arrow {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
  }

  .section-jump-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    white-space: nowrap;
  }
}

@media (max-width: 480px) {

  .kohteet-stats {
    grid-template-columns: 1fr;
  }

  .contact-form-wrapper {
    padding: 24px;
  }
}