/* ============================================================
   ISAAC HOLZE — isaacholze.com
   Dark, cinematic, GSAP scroll-driven
   ============================================================ */

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

:root {
  --black:    #080808;
  --dark:     #0f0f0f;
  --mid:      #1a1a1a;
  --border:   #222222;
  --muted:    #444444;
  --dim:      #888888;
  --light:    #cccccc;
  --white:    #f0f0f0;
  --accent:   #e8e0d0;
  --gold:     #c8a96e;

  --font-display: 'Bebas Neue', 'Impact', sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;

  --nav-h: 64px;
  --section-pad: clamp(80px, 10vw, 160px);
  --gutter: clamp(24px, 5vw, 80px);

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:   cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--black);
  color: var(--light);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- Scrollbar --------------------------------------------- */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--muted); }

/* ============================================================
   NAV
   ============================================================ */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  z-index: 100;
  transition: background 0.4s var(--ease-in-out),
              border-color 0.4s var(--ease-in-out);
  border-bottom: 1px solid transparent;
}

#nav.scrolled {
  background: rgba(8, 8, 8, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-color: var(--border);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.12em;
  color: var(--white);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--white); }

.nav-links .nav-cta {
  color: var(--white);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 2px;
  transition: background 0.2s, border-color 0.2s;
}

.nav-links .nav-cta:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--white);
  transition: transform 0.3s, opacity 0.3s;
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--nav-h) var(--gutter) var(--section-pad);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 60% 40%, #1a1612 0%, var(--black) 70%);
}

.hero-grain {
  position: absolute;
  inset: -50%;
  width: 200%;
  height: 200%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  background-size: 200px;
  opacity: 0.5;
  pointer-events: none;
  animation: grain 8s steps(10) infinite;
}

@keyframes grain {
  0%,100%{transform:translate(0,0)}
  10%{transform:translate(-2%,-3%)}
  20%{transform:translate(2%,3%)}
  30%{transform:translate(-3%,2%)}
  40%{transform:translate(3%,-2%)}
  50%{transform:translate(-1%,4%)}
  60%{transform:translate(1%,-4%)}
  70%{transform:translate(-4%,1%)}
  80%{transform:translate(4%,-1%)}
  90%{transform:translate(-2%,2%)}
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
  opacity: 0;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(5rem, 15vw, 14rem);
  line-height: 0.9;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 2rem;
  overflow: hidden;
}

.hero-name-first,
.hero-name-last {
  display: block;
  opacity: 0;
  transform: translateY(40px);
}

.hero-sub {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 3rem;
  opacity: 0;
}

.hero-scroll-cue {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0;
  transition: color 0.2s;
}
.hero-scroll-cue:hover { color: var(--dim); }
.hero-scroll-cue svg { animation: bounce 2s ease-in-out infinite; }
@keyframes bounce {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

.hero-reel-tag {
  position: absolute;
  bottom: 2.5rem;
  right: var(--gutter);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  writing-mode: vertical-rl;
  z-index: 1;
}

/* ============================================================
   SECTION PANELS — sticky scroll layout
   ============================================================ */
.section-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
  border-top: 1px solid var(--border);
}

.section-panel--alt {
  background: var(--dark);
}

.panel-sticky {
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--section-pad) var(--gutter) var(--section-pad) var(--gutter);
}

.panel-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
}

.panel-heading {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.0;
  color: var(--white);
  margin-bottom: 1.5rem;
}

.panel-heading em {
  font-style: normal;
  color: var(--gold);
}

.panel-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--dim);
  max-width: 380px;
  margin-bottom: 2rem;
}

.panel-link {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.25rem;
  display: inline-block;
  transition: border-color 0.2s, color 0.2s;
}
.panel-link:hover { border-color: var(--white); }

.panel-scroll-track {
  padding: var(--section-pad) var(--gutter) var(--section-pad) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ============================================================
   WORK CARDS — Commercial
   ============================================================ */
.work-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.work-card {
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  background: var(--mid);
  transition: border-color 0.3s, transform 0.3s var(--ease-out-expo);
  opacity: 0;
  transform: translateY(40px);
}

.work-card:hover {
  border-color: var(--muted);
  transform: translateY(-4px) !important;
}

.work-card-media {
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
}

/* Vimeo embed */
.vimeo-wrap {
  background: #000;
}
.vimeo-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* NDA card */
.work-card--nda { cursor: default; }
.work-card--nda:hover { transform: none !important; }

.nda-media {
  background: linear-gradient(135deg, #111 0%, #181410 100%);
  border-bottom: 1px solid var(--border);
}

.nda-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--muted);
}

.nda-icon { opacity: 0.6; }

.nda-label {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.inline-link {
  color: var(--gold);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.inline-link:hover { border-color: var(--gold); }

.placeholder-media {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #151515 0%, #1f1f1f 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.placeholder-label {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.work-card-info {
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.work-card-tag {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.work-card-info h3 {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--white);
}

.work-card-info p {
  font-size: 0.8rem;
  color: var(--dim);
}

/* ============================================================
   YOUTUBE PLAYLISTS
   ============================================================ */
.playlist-tabs {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.playlist-tab {
  flex: 1;
  padding: 0.6rem 0.5rem;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
  border-right: 1px solid var(--border);
  transition: background 0.2s, color 0.2s;
}
.playlist-tab:last-child { border-right: none; }
.playlist-tab:hover { background: var(--mid); color: var(--light); }
.playlist-tab.active { background: var(--white); color: var(--black); }

.playlist-panel { display: none; }
.playlist-panel.active { display: block; }

.yt-embed-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 4px;
  overflow: hidden;
  background: var(--mid);
  border: 1px solid var(--border);
}

.yt-embed-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.yt-channel-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}
.yt-channel-link:hover { color: var(--white); }

/* ============================================================
   STILLS — projects + masonry
   ============================================================ */
.stills-project {
  margin-bottom: 3rem;
}
.stills-project:last-child { margin-bottom: 0; }

.stills-project-header {
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.stills-project-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.05em;
  color: var(--white);
  line-height: 1;
}

.stills-project-sub {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 0.4rem;
}

.stills-masonry {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.still-item {
  overflow: hidden;
  border-radius: 4px;
  cursor: zoom-in;
  position: relative;
  background: var(--mid);
}

.still-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--ease-out-expo);
}

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

.still-item--wide { grid-column: span 2; }

/* LIGHTBOX */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 500;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}

#lightbox.open { display: flex; }

#lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

#lightbox-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 40px 80px rgba(0,0,0,0.8);
}

#lightbox-caption {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
  text-align: center;
}

#lightbox-close {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 2rem;
  color: var(--dim);
  line-height: 1;
  transition: color 0.2s;
  z-index: 501;
  padding: 0.5rem;
}
#lightbox-close:hover { color: var(--white); }

#lightbox-prev,
#lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--dim);
  padding: 1rem;
  transition: color 0.2s;
  z-index: 501;
}
#lightbox-prev { left: 1rem; }
#lightbox-next { right: 1rem; }
#lightbox-prev:hover,
#lightbox-next:hover { color: var(--white); }

/* ============================================================
   TOOLS
   ============================================================ */
.tools-list {
  display: flex;
  flex-direction: column;
}

.tool-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  align-items: start;
  gap: 1.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
  cursor: default;
}

.tool-item:first-child { border-top: 1px solid var(--border); }
.tool-item:hover { background: rgba(255,255,255,0.02); }

.tool-number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--border);
  line-height: 1;
  padding-top: 4px;
}

.tool-content h3 {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.tool-content p {
  font-size: 0.85rem;
  color: var(--dim);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.tool-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tool-tags span {
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
}

.tool-status {
  display: inline-block;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(200, 169, 110, 0.3);
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  margin-bottom: 0.6rem;
}

.tool-item .tool-number { color: var(--gold); opacity: 0.6; }

.tool-item--cta {
  border-bottom: none;
  background: rgba(200, 169, 110, 0.04);
  border-top: 1px solid rgba(200, 169, 110, 0.15);
  padding-left: 0.5rem;
  border-radius: 0 0 4px 4px;
}

.tool-item--cta h3 { color: var(--gold); }

.tool-cta-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid rgba(200, 169, 110, 0.3);
  padding-bottom: 0.2rem;
  transition: border-color 0.2s;
}
.tool-cta-link:hover { border-color: var(--gold); }

/* ============================================================
   TEACHING
   ============================================================ */
.teaching-panel {
  display: block;
  min-height: auto;
  padding: var(--section-pad) 0;
  background: var(--dark);
  overflow: hidden;
}

.teaching-inner {
  padding: 0 var(--gutter);
}

.teaching-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: end;
  margin-top: 2rem;
  margin-bottom: 4rem;
}

.teaching-heading {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 7rem);
  line-height: 0.95;
  color: var(--white);
}

.teaching-sub {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 1rem;
}

.teaching-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--dim);
  margin-bottom: 2rem;
}

/* Marquee */
.teaching-marquee {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
  margin: 0 calc(-1 * var(--gutter));
}

.marquee-track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: marquee 20s linear infinite;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.marquee-track span:nth-child(even) { color: var(--border); }

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-panel {
  display: block;
  background: var(--black);
}

.contact-inner {
  padding: var(--section-pad) var(--gutter);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
  margin-top: 2rem;
}

.contact-heading-row {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.contact-photo-wrap {
  flex-shrink: 0;
  width: 140px;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--border);
  margin-top: 0.5rem;
}
.contact-photo { width: 100%; display: block; }

.contact-heading {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 6rem);
  line-height: 0.95;
  color: var(--white);
}

.contact-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--dim);
}

/* Form */
#contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}

.form-group input,
.form-group textarea {
  background: var(--mid);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--white);
  transition: border-color 0.2s, background 0.2s;
  outline: none;
  resize: none;
}

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

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--dim);
  background: #141414;
}

.form-group input.error,
.form-group textarea.error {
  border-color: #c0392b;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--white);
  color: var(--black);
  padding: 0.9rem 1.75rem;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  align-self: flex-start;
  transition: background 0.2s, transform 0.2s;
}
.form-submit:hover { background: var(--accent); transform: translateX(2px); }
.form-submit:disabled { opacity: 0.5; pointer-events: none; }

.submit-arrow { transition: transform 0.2s; }
.form-submit:hover .submit-arrow { transform: translateX(4px); }

.form-success,
.form-error {
  display: none;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: 3px;
  border: 1px solid;
}

.form-success:not([hidden]),
.form-error:not([hidden]) {
  display: flex;
}

.form-success {
  color: #4ade80;
  border-color: rgba(74, 222, 128, 0.2);
  background: rgba(74, 222, 128, 0.05);
}

.form-error {
  color: #f87171;
  border-color: rgba(248, 113, 113, 0.2);
  background: rgba(248, 113, 113, 0.05);
}
.form-error a { text-decoration: underline; }

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem var(--gutter);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--white); }

.footer-copy {
  font-size: 0.65rem;
  color: var(--border);
  letter-spacing: 0.05em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .section-panel {
    grid-template-columns: 1fr;
  }

  .panel-sticky {
    position: relative;
    top: auto;
    height: auto;
    padding: var(--section-pad) var(--gutter) 2rem;
  }

  .panel-scroll-track {
    padding: 0 var(--gutter) var(--section-pad);
  }

  .contact-layout,
  .teaching-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .stills-masonry {
    grid-template-columns: 1fr;
    grid-auto-rows: 240px;
  }

  .still-item--tall,
  .still-item--wide {
    grid-row: span 1;
    grid-column: span 1;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .playlist-tabs { flex-wrap: wrap; }
  .playlist-tab { flex: 1 1 45%; }
}