/* ==========================================================================
   FEDOTOV CREATIVE — DESIGN SYSTEM
   Cinema Gothic · Eurooppalainen filmistudio · Skandinaavinen tarinankerronta
   ========================================================================== */

:root {
  /* --- Väripaletti (master-ohjeen mukaan, ei poikkeamia) --- */
  --color-bg: #121212;           /* Syvä hiilenmusta */
  --color-bg-secondary: #232323; /* Grafiitinharmaa */
  --color-text: #E8E4DC;         /* Filmipaperin valkoinen */
  --color-accent: #9AA5B1;       /* Vanha hopea */
  --color-mood: #6D7A89;         /* Sumuinen siniharmaa */

  /* Johdetut sävyt (samasta paletista, ei uusia väriarvoja) */
  --color-bg-elevated: #1a1a1a;
  --color-border: rgba(154, 165, 177, 0.16);
  --color-border-strong: rgba(154, 165, 177, 0.32);
  --color-text-dim: rgba(232, 228, 220, 0.62);
  --color-overlay: rgba(18, 18, 18, 0.82);

  /* --- Typografia --- */
  --font-display: 'Cormorant', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, 'Segoe UI', sans-serif;

  /* --- Skaala --- */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 8rem;

  --container-max: 1240px;
  --container-narrow: 760px;

  --ease-cinema: cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Reset --- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* Filmirae-tekstuuri koko sivun yli, hienovarainen */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* --- Typografia-skaala --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(2.75rem, 6vw, 5.5rem); font-weight: 500; }
h2 { font-size: clamp(2rem, 4vw, 3.25rem); }
h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
h4 { font-size: 1.15rem; }

p { color: var(--color-text-dim); }

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}

.eyebrow::before {
  content: '';
  width: 1.4em;
  height: 1px;
  background: var(--color-accent);
  opacity: 0.6;
}

.lede {
  font-size: 1.15rem;
  color: var(--color-text-dim);
  max-width: 640px;
}

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-2xl) 0;
  position: relative;
}

.section-tight { padding: var(--space-xl) 0; }

/* --- Sivun hero (jaettu, käytetään useilla alisivuilla: Portfolio,
   Filmilaboratorio, Tietoa minusta, Omat projektit, Yhteystiedot, Palvelut) --- */
.page-hero {
  padding: calc(var(--space-2xl) + 3rem) 0 var(--space-lg);
  text-align: center;
}

.page-hero .eyebrow { justify-content: center; }
.page-hero .eyebrow::before { display: none; }
.page-hero h1 { margin-top: var(--space-sm); }
.page-hero .lede { margin: var(--space-sm) auto 0; text-align: center; }

/* --- Final CTA (jaettu, käytetään useilla sivuilla) --- */
.final-cta {
  text-align: center;
}

.final-cta h2 { margin-bottom: var(--space-sm); }
.final-cta .lede { margin-bottom: var(--space-lg); margin-left: auto; margin-right: auto; }

/* --- Filmiruutu-motiivi: signature-elementti ---
   Käytetään osioiden erottimena. Muistuttaa 35mm-filmin reunamerkintöjä:
   sprocket holes ja ruutunumero. Aiheeseen sidottu, ei geneerinen koriste. */
.filmstrip-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  opacity: 0.55;
}

.filmstrip-divider .sprockets {
  display: flex;
  gap: 7px;
}

.filmstrip-divider .sprockets span {
  width: 5px;
  height: 8px;
  border: 1px solid var(--color-accent);
  border-radius: 1px;
  opacity: 0.7;
}

.filmstrip-divider .frame-label {
  font-family: var(--font-body);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--color-mood);
  white-space: nowrap;
}

.filmstrip-divider .line {
  flex: 1;
  height: 1px;
  background: var(--color-border);
  max-width: 220px;
}

/* --- Napit --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.9em 1.8em;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.35s var(--ease-cinema);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-accent);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: var(--color-accent);
  background: rgba(154, 165, 177, 0.08);
}

.btn-arrow {
  transition: transform 0.35s var(--ease-cinema);
}
.btn:hover .btn-arrow { transform: translateX(3px); }

/* --- Kortit --- */
.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  transition: border-color 0.4s var(--ease-cinema), transform 0.4s var(--ease-cinema);
}

.card:hover {
  border-color: var(--color-border-strong);
}

/* --- Navigaatio --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-sm) 0;
  background: linear-gradient(to bottom, rgba(18,18,18,0.92), rgba(18,18,18,0));
  transition: background 0.4s var(--ease-cinema), backdrop-filter 0.4s var(--ease-cinema);
}

.site-header.scrolled {
  background: rgba(18, 18, 18, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

/* Kun mobiilivalikko on auki:
   1. backdrop-filter poistetaan — se luo stacking contextin johon
      position:fixed lapset jäävät loukkuun.
   2. Peittokerros tehdään ::after-pseudoelementillä headerin ULKOPUOLELLE
      — header itsessään säilyy normaalin korkuisena.
   3. menu-toggle z-index 1003 pysyy aina nav-paneelin (1001) päällä.
   HUOM: "bottom: 0" headerissa EI toimi — header on jo fixed ja
   sen korkeus ei liity nav-paneeliin. Nav-paneeli on oma fixed-elementti. */
@media (max-width: 880px) {
  .site-header.nav-open,
  .site-header.nav-open.scrolled {
    background: var(--color-bg) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-bottom: none !important;
  }

  /* Hamburger pysyy aina naveelin (z-index 1001) päällä */
  .menu-toggle {
    position: relative;
    z-index: 1003;
  }
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  font-weight: 500;
}

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

/* Logo-kuva tekstin sijaan */
.logo-img {
  display: block;
  max-height: 48px;
  max-width: 180px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.main-nav {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.main-nav a {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  position: relative;
  padding: 0.3em 0;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-text);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-accent);
}

.nav-cta {
  border: 1px solid var(--color-border-strong);
  padding: 0.5em 1.2em;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.3s var(--ease-cinema);
}

.nav-cta:hover {
  border-color: var(--color-accent);
  background: rgba(154, 165, 177, 0.08);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5em;
}

.menu-toggle span {
  width: 22px;
  height: 1px;
  background: var(--color-text);
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0 var(--space-md);
  background: var(--color-bg-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-grid h4 {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.footer-grid a, .footer-grid p {
  font-size: 0.92rem;
  color: var(--color-text-dim);
  display: block;
  margin-bottom: 0.5em;
}

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

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

.social-row {
  display: flex;
  gap: var(--space-sm);
}

/* --- Skip link saavutettavuuteen --- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-text);
  color: var(--color-bg);
  padding: 0.6em 1em;
  z-index: 10000;
}
.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

/* --- Keyboard focus näkyvyys --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* --- Scroll-reveal ---
   Progressive enhancement: sisältö on AINA näkyvissä oletuksena.
   JS lisää .js-reveal-ready -luokan <body>:lle vain kun se on ehtinyt
   alustaa IntersectionObserverin. Vasta sen jälkeen .reveal-elementit
   piiloutuvat hetkeksi ja animoituvat näkyviin. Jos JS ei lataudu,
   käyttäjä näkee sisällön normaalisti heti. */
.js-reveal-ready .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s var(--ease-cinema), transform 0.9s var(--ease-cinema);
}
.js-reveal-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  .js-reveal-ready .reveal { opacity: 1; transform: none; }
}

/* --- Responsiivisuus: navigaatio --- */
@media (max-width: 880px) {
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
  .nav-cta { display: none; }

  .main-nav.mobile-open {
    display: flex;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(78vw, 360px);
    background: var(--color-bg-secondary);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-2xl) var(--space-lg) var(--space-lg);
    gap: var(--space-md);
    border-left: 1px solid var(--color-border);
    z-index: 1001;
  }

  .main-nav.mobile-open a { font-size: 1rem; }

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

@media (max-width: 600px) {
  section { padding: var(--space-xl) 0; }
  :root { --space-2xl: 4.5rem; }
}