/* ============================================================
   PERTTI HAGELSTEIN — Portfolio Website
   Style Sheet
   ============================================================ */

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

:root {
  --bg:        #000000;
  --fg:        #fafafa;
  --gray:      #888888;
  --gray-mid:  #aaaaaa;
  --gray-dark: #1a1a1a;
  --border:    #222222;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ============================================================
   NAVIGATION
   ============================================================ */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px 48px;
}

.nav-logo {
  font-family: 'Arial Black', 'Arial Bold', Arial, sans-serif;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--fg);
}

.nav-links {
  display: flex;
  gap: 48px;
}

.nav-links a {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray);
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--fg);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--fg);
  transition: all 0.3s ease;
}

.nav-toggle.open span:first-child {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:last-child {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   PLACEHOLDER IMAGES
   ============================================================ */

.ph {
  width: 100%;
  height: 100%;
  background: #0d0d0d;
  display: block;
  position: relative;
  overflow: hidden;
  /*
    HOW TO ADD YOUR IMAGES:
    Replace <div class="ph ph-[name]"></div>
    with:   <img src="images/yourfile.jpg" alt="..." loading="lazy">

    Recommended image size: 1200 × 1800 px (2:3 ratio)
    Hero image: 2400 × 1600 px (3:2 ratio)
  */
}

/* Subtle variation so placeholders don't all look identical */
.ph-01 { background: #0d0d0d; }
.ph-02 { background: #0a0a0a; }
.ph-03 { background: #101010; }
.ph-04 { background: #0c0c0c; }
.ph-05 { background: #0f0f0f; }
.ph-06 { background: #0b0b0b; }
.ph-07 { background: #111111; }
.ph-08 { background: #0e0e0e; }
.ph-09 { background: #090909; }
.ph-hero { background: #080808; }

/* ============================================================
   HOME — HERO
   ============================================================ */

.hero {
  height: 100vh;
  position: relative;
  overflow: hidden;
}

.hero .ph-hero {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  /*
    Replace with:
    background-image: url('images/hero.jpg');
    background-size: cover;
    background-position: center;
  */
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-caption {
  position: absolute;
  bottom: 48px;
  left: 48px;
  z-index: 2;
}

.hero-tagline {
  font-size: 11px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--gray);
}

/* ============================================================
   HOME — WORK PREVIEW GRID
   ============================================================ */

.grid-home {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.grid-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  display: block;
}

.grid-item .img-wrap {
  aspect-ratio: 2 / 3;
  overflow: hidden;
  position: relative;
}

.grid-item .img-wrap .ph,
.grid-item .img-wrap img {
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.grid-item:hover .img-wrap .ph,
.grid-item:hover .img-wrap img {
  transform: scale(1.04);
}

.grid-item .hover-info {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.grid-item:hover .hover-info {
  opacity: 1;
}

.hover-info .proj-title {
  font-family: 'Arial Black', 'Arial Bold', Arial, sans-serif;
  font-size: 13px;
  font-weight: 900;
  color: var(--fg);
  margin-bottom: 5px;
  line-height: 1.3;
}

.hover-info .proj-client {
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gray-mid);
}

/* ============================================================
   WORK PAGE
   ============================================================ */

.page-work {
  padding-top: 110px;
}

.work-header {
  padding: 16px 48px 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2px;
}

.work-intro {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 28px;
}

.category-filter {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: none;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray);
  cursor: pointer;
  padding: 0 0 6px 0;
  transition: color 0.2s ease;
  position: relative;
}

.filter-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--fg);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.filter-btn:hover { color: var(--fg); }

.filter-btn.active {
  color: var(--fg);
}

.filter-btn.active::after {
  transform: scaleX(1);
}

/* Work grid */
.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.work-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  display: block;
}

.work-card .img-wrap {
  aspect-ratio: 2 / 3;
  overflow: hidden;
  position: relative;
}

.work-card .img-wrap .ph,
.work-card .img-wrap img {
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.work-card:hover .img-wrap .ph,
.work-card:hover .img-wrap img {
  transform: scale(1.04);
}

.work-card .card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.work-card:hover .card-overlay {
  opacity: 1;
}

.card-overlay .card-cat {
  font-size: 9px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 8px;
}

.card-overlay .card-title {
  font-family: 'Arial Black', 'Arial Bold', Arial, sans-serif;
  font-size: 14px;
  font-weight: 900;
  color: var(--fg);
  margin-bottom: 6px;
  line-height: 1.25;
}

.card-overlay .card-client {
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gray-mid);
}

/* Hidden cards (filtered out) */
.work-card.hidden {
  display: none;
}

/* ============================================================
   PROJECT MODAL
   ============================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: var(--bg);
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 120px 48px 100px;
}

.modal-close {
  position: fixed;
  top: 34px;
  right: 48px;
  background: none;
  border: none;
  color: var(--gray);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.2s ease;
  z-index: 2001;
  font-family: Arial, Helvetica, sans-serif;
}

.modal-close:hover {
  color: var(--fg);
}

.modal-cat {
  font-size: 10px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 20px;
  display: block;
}

.modal-title {
  font-family: 'Arial Black', 'Arial Bold', Arial, sans-serif;
  font-size: 36px;
  font-weight: 900;
  color: var(--fg);
  margin-bottom: 8px;
  line-height: 1.15;
}

.modal-year {
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--gray);
  margin-bottom: 36px;
}

.modal-credits {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 24px;
  margin-bottom: 40px;
  max-width: 480px;
}

.modal-credits .credit-role {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray);
}

.modal-credits .credit-name {
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--fg);
}

.modal-description {
  font-size: 15px;
  line-height: 1.85;
  color: #cccccc;
  max-width: 580px;
  margin-bottom: 64px;
}

.modal-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.modal-img {
  aspect-ratio: 2 / 3;
  background: #0d0d0d;
  overflow: hidden;
}

.modal-img.wide {
  aspect-ratio: 4 / 3;
  grid-column: span 2;
}

.modal-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */

.page-about {
  min-height: 100vh;
  padding: 140px 48px 100px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 80px;
  align-items: start;
}

.about-statement {
  font-family: 'Arial Black', 'Arial Bold', Arial, sans-serif;
  font-size: 28px;
  font-weight: 900;
  line-height: 1.25;
  text-transform: uppercase;
  color: var(--fg);
  letter-spacing: 0.5px;
}

.about-sidebar {
  padding-top: 8px;
}

.client-group {
  margin-bottom: 40px;
}

.client-group:last-child {
  margin-bottom: 0;
}

.client-group-label {
  font-size: 10px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 12px;
  display: block;
}

.client-list {
  font-size: 13px;
  line-height: 1.9;
  color: #cccccc;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */

.page-contact {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 48px 100px;
}

.contact-label {
  font-size: 10px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 56px;
  display: block;
}

/* Logo-bar style — same as invoice header */
.contact-bar {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.contact-bar-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-bar-sep {
  width: 1px;
  height: 48px;
  background: var(--border);
  margin: 0 40px;
  flex-shrink: 0;
}

.contact-bar-role {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray);
}

.contact-bar-value {
  font-family: 'Arial Black', 'Arial Bold', Arial, sans-serif;
  font-size: 18px;
  font-weight: 900;
  color: var(--fg);
  transition: color 0.2s ease;
  letter-spacing: 2px;
  text-transform: uppercase;
}

a.contact-bar-item:hover .contact-bar-value {
  color: var(--gray-mid);
}

/* ============================================================
   FOOTER
   ============================================================ */

footer {
  padding: 28px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
}

footer p {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray);
}

footer a {
  color: var(--gray);
  transition: color 0.2s ease;
}

footer a:hover {
  color: var(--fg);
}

/* ============================================================
   RESPONSIVE — TABLET & MOBILE
   ============================================================ */

@media (max-width: 900px) {
  nav {
    padding: 26px 32px;
  }

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

  .work-header {
    padding: 16px 32px 36px;
  }

  .page-about {
    grid-template-columns: 1fr;
    gap: 56px;
    padding: 140px 32px 80px;
  }

  .about-statement {
    font-size: 22px;
  }

  .page-contact {
    padding: 120px 32px 80px;
  }

  .contact-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 40px;
  }

  .contact-bar-sep {
    width: 32px;
    height: 1px;
    margin: 0;
  }

  .modal-inner {
    padding: 110px 32px 80px;
  }

  .modal-title {
    font-size: 28px;
  }

  footer {
    padding: 24px 32px;
  }
}

@media (max-width: 640px) {
  nav {
    padding: 22px 20px;
  }

  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 48px;
    z-index: 1000;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 13px;
    letter-spacing: 4px;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-caption {
    bottom: 28px;
    left: 20px;
  }

  .grid-home,
  .work-grid {
    grid-template-columns: 1fr;
    gap: 1px;
  }

  .work-header {
    padding: 12px 20px 28px;
  }

  .category-filter {
    gap: 20px;
  }

  .page-about,
  .page-contact {
    padding: 110px 20px 64px;
  }

  .about-statement {
    font-size: 18px;
  }

  .modal-inner {
    padding: 100px 20px 64px;
  }

  .modal-close {
    right: 20px;
  }

  .modal-title {
    font-size: 22px;
  }

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

  .modal-img.wide {
    grid-column: span 1;
    aspect-ratio: 3 / 2;
  }

  footer {
    padding: 20px 20px;
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }
}