/* ============================================================
   Kuumapaino.fi — Design System (2026)
   Dark, sporty, professional
   ============================================================ */

:root {
  --bg: #050505;
  --bg-elevated: #0f0f0f;
  --surface: #161616;
  --surface-hover: #1c1c1c;
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(250, 204, 21, 0.25);
  --text: #fafafa;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;
  --accent: #facc15;
  --accent-hover: #fde047;
  --accent-soft: rgba(250, 204, 21, 0.12);
  --accent-hot: #f97316;
  --radius: 14px;
  --radius-lg: 20px;
  --header-h: 84px;
  --max: 1120px;
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.55);
}

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

html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 5rem 0;
}

.section-sm {
  padding: 3.5rem 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

.eyebrow::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.65rem, 3.5vw, 2.25rem); }
h3 { font-size: 1.25rem; }

.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 36rem;
  line-height: 1.7;
}

.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }
.text-accent { color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--accent);
  color: #111;
  box-shadow: 0 4px 20px rgba(250, 204, 21, 0.25);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 28px rgba(250, 204, 21, 0.35);
}

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

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
}

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

.btn-outline-accent:hover {
  background: var(--accent-soft);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(5, 5, 5, 0.75);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-link img {
  height: 56px;
  width: auto;
}

@media (min-width: 900px) {
  .logo-link img {
    height: 64px;
  }
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.nav-desktop a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-desktop a.active {
  color: var(--accent);
}

.header-cta {
  display: none;
}

.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  cursor: pointer;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
}

/* Mobile nav drawer */
.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(5, 5, 5, 0.96);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
  visibility: hidden;
}

.nav-mobile.open {
  transform: translateX(0);
  visibility: visible;
}

.nav-mobile-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
}

.nav-mobile nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-mobile nav a {
  font-size: 1.35rem;
  font-weight: 600;
  padding: 0.85rem 0.5rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.nav-mobile nav a.active {
  color: var(--accent);
}

.nav-mobile-cta {
  margin-top: auto;
  padding-bottom: 1rem;
}

@media (min-width: 900px) {
  .nav-desktop { display: flex; }
  .header-cta { display: inline-flex; }
  .menu-toggle { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 4.5rem 0 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  translate: -50% 0;
  width: 70vmax;
  height: 50vmax;
  background: radial-gradient(ellipse, rgba(250, 204, 21, 0.12) 0%, transparent 65%);
  filter: blur(40px);
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: 1.15rem;
  background: linear-gradient(135deg, #fff 25%, #facc15 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lead {
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.stat {
  text-align: center;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
  .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 900px) {
  .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
  .card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.25s, transform 0.25s, background 0.25s;
}

.card:hover {
  border-color: var(--border-accent);
  background: var(--surface-hover);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.15rem;
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  margin-bottom: 0.5rem;
}

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

/* ---------- Process steps ---------- */
.steps {
  display: grid;
  gap: 1.5rem;
  counter-reset: step;
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

.step {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  counter-increment: step;
}

.step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.step p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ---------- Gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
}

.gallery-item {
  aspect-ratio: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-align: center;
  padding: 1rem;
}

.gallery-item.placeholder {
  background: linear-gradient(135deg, #161616 0%, #1a1a1a 100%);
}

/* ---------- Form ---------- */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 560px;
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

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

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

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

@media (min-width: 520px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.08) 0%, rgba(249, 115, 22, 0.06) 100%);
  border-top: 1px solid var(--border-accent);
  border-bottom: 1px solid var(--border-accent);
  text-align: center;
}

.cta-band h2 {
  margin-bottom: 0.75rem;
}

.cta-band .lead {
  margin: 0 auto 1.75rem;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  background: var(--bg-elevated);
}

.footer-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.footer-brand img {
  height: 48px;
  width: auto;
  margin-bottom: 0.85rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 260px;
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 0.3rem 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-dim);
}

.social-links {
  display: flex;
  gap: 0.6rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.social-links a:hover {
  color: var(--accent);
  border-color: var(--border-accent);
  background: var(--accent-soft);
}

.social-links svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
}

/* ---------- Page-specific helpers ---------- */
.page-hero {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  margin-bottom: 0.75rem;
}

.split {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 800px) {
  .split {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-item {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.contact-item-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.contact-item strong {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
}

.contact-item span,
.contact-item a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

/* Trust strip */
.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  justify-content: center;
  align-items: center;
  padding: 1.5rem 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.trust-strip span {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ========== X-style logo intro (homepage) ========== */
body.intro-active {
  overflow: hidden;
}

body.intro-active .site-header,
body.intro-active main,
body.intro-active .site-footer {
  opacity: 0;
  pointer-events: none;
}

body.intro-done .site-header,
body.intro-done main,
body.intro-done .site-footer {
  animation: contentReveal 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: #050505;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: all;
}

.intro-overlay.is-exiting {
  animation: introOverlayOut 0.35s ease-out forwards;
}

.intro-logo {
  width: min(220px, 55vw);
  height: auto;
  transform-origin: center center;
  will-change: transform, opacity;
  filter: drop-shadow(0 0 28px rgba(250, 204, 21, 0.35));
  transform: scale(1);
  opacity: 1;
}

.intro-logo.is-animating {
  animation: introLogo 1.15s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}

@keyframes introLogo {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  22% {
    transform: scale(0.82);
    opacity: 1;
  }
  100% {
    transform: scale(28);
    opacity: 0.12;
  }
}

@keyframes introOverlayOut {
  from { opacity: 1; }
  to   { opacity: 0; visibility: hidden; }
}

@keyframes contentReveal {
  from {
    opacity: 0;
    transform: scale(1.02);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro-overlay { display: none !important; }
  body.intro-active .site-header,
  body.intro-active main,
  body.intro-active .site-footer {
    opacity: 1 !important;
    pointer-events: auto !important;
  }
  body.intro-done .site-header,
  body.intro-done main,
  body.intro-done .site-footer {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* Form status + honeypot */
.form-status {
  margin-bottom: 1.25rem;
  padding: 0.9rem 1.1rem;
  border-radius: 10px;
  font-size: 0.95rem;
  line-height: 1.5;
}
.form-status--ok {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.35);
  color: #86efac;
}
.form-status--err {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #fca5a5;
}
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}