/* ============================================
   Oskar Johansson — Portfolio
   CSS Foundation
   ============================================ */

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

/* --- Custom Properties --- */
:root {
  --color-bg: #080808;
  --color-bg-elevated: #111111;
  --color-bg-card: #0e0e0e;
  --color-text: #f0f0f0;
  --color-text-muted: #777;
  --color-text-dim: #444;
  --color-accent: #c8a87c;
  --color-border: #1a1a1a;
  --color-white: #fff;

  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', sans-serif;

  --fs-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.8rem);
  --fs-sm: clamp(0.8rem, 0.75rem + 0.25vw, 0.9rem);
  --fs-base: clamp(0.9rem, 0.85rem + 0.25vw, 1rem);
  --fs-lg: clamp(1.1rem, 1rem + 0.5vw, 1.35rem);
  --fs-xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
  --fs-2xl: clamp(2rem, 1.5rem + 2.5vw, 4rem);
  --fs-hero: clamp(2.5rem, 2rem + 3vw, 5.5rem);

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;

  --max-width: 1200px;
  --max-width-narrow: 800px;

  --transition-fast: 0.1s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.4s ease;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  font-weight: 300;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

h1 {
  font-size: var(--fs-hero);
  line-height: 1.05;
  letter-spacing: 0.2em;
}

h2 {
  font-size: var(--fs-xl);
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

h3 {
  font-size: var(--fs-lg);
  color: var(--color-text);
  letter-spacing: 0.2em;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

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

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) 0;
  transition: background var(--transition-base), padding var(--transition-base);
}

.nav--scrolled {
  background: rgba(8, 8, 8, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text);
  transition: opacity var(--transition-fast);
}

.nav__logo:hover {
  opacity: 0.7;
}

.nav__links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.nav__link {
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width var(--transition-base);
}

.nav__link:hover {
  color: var(--color-text);
}

.nav__link:hover::after {
  width: 100%;
}

/* Mobile menu toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-text);
  margin: 6px 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* --- Hero --- */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(8, 8, 8, 0.3) 0%,
    rgba(8, 8, 8, 0.1) 40%,
    rgba(8, 8, 8, 0.5) 80%,
    rgba(8, 8, 8, 1) 100%
  );
  z-index: 1;
}

.hero__video-wrapper {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero__video-wrapper iframe {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 177.78vh; /* 16:9 */
  height: 100vh;
  min-width: 100%;
  min-height: 56.25vw;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
}

.hero__title {
  margin-bottom: var(--space-sm);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.6s ease 0.1s forwards;
}

.hero__subtitle {
  font-size: var(--fs-sm);
  font-weight: 300;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.6s ease 0.3s forwards;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.6s forwards;
}

.hero__scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--color-text-muted), transparent);
  margin: 0 auto;
  animation: scrollPulse 2s ease-in-out infinite;
}

/* --- About --- */
.about {
  padding: var(--space-xl) 0;
}

.about__text {
  font-size: var(--fs-lg);
  font-weight: 300;
  line-height: 1.8;
  color: var(--color-text-muted);
  max-width: 650px;
  margin: 0 auto;
  text-align: center;
}

/* --- Films Section --- */
.films {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.films__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.films__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* --- Film Card --- */
.film {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.film.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.film__video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  background: var(--color-bg-card);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.film__video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.film__poster {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  overflow: hidden;
  z-index: 10;
}

.film__poster::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  transition: background var(--transition-base);
}

.film__poster:hover::after {
  background: rgba(0,0,0,0.1);
}

.film__poster-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.film__poster:hover .film__poster-img {
  transform: scale(1.03);
}

.film__play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  background: rgba(8, 8, 8, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  color: var(--color-white);
  transition: all var(--transition-base);
}

.film__play-btn svg {
  width: 24px;
  height: 24px;
  margin-left: 4px; /* visually center the play triangle */
  transition: color var(--transition-base);
}

.film__poster:hover .film__play-btn {
  border-color: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%) scale(1.1);
}

.film__poster:hover .film__play-btn svg {
  color: var(--color-accent);
}


.film__info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-xs) 0;
}

.film__title {
  font-size: var(--fs-base);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.film__meta {
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
}

/* --- Contact --- */
.contact {
  padding: var(--space-xl) 0 var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.contact__header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.contact__form {
  max-width: 500px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.contact__field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.contact__label {
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.contact__input,
.contact__textarea {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 0.8rem 1rem;
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  font-weight: 300;
  color: var(--color-text);
  transition: border-color var(--transition-fast);
  outline: none;
}

.contact__input:focus,
.contact__textarea:focus {
  border-color: var(--color-text-muted);
}

.contact__textarea {
  resize: vertical;
  min-height: 140px;
}

.contact__submit {
  align-self: flex-start;
  background: transparent;
  border: 1px solid var(--color-text-muted);
  border-radius: 2px;
  padding: 0.7rem 2.5rem;
  font-family: var(--font-primary);
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  margin-top: var(--space-xs);
}

.contact__submit:hover {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

/* --- Footer --- */
.footer {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer__text {
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
}

/* --- Divider --- */
.divider {
  width: 40px;
  height: 1px;
  background: var(--color-text-dim);
  margin: var(--space-lg) auto;
}

/* --- Animations --- */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 0.8; transform: scaleY(1.2); }
}

/* Reveal animation class */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(8, 8, 8, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__link {
    font-size: var(--fs-base);
  }

  .nav__toggle {
    display: block;
    z-index: 101;
  }

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

  .nav__toggle.is-active span:nth-child(2) {
    opacity: 0;
  }

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

  section {
    padding: var(--space-lg) 0;
  }

  .films__grid {
    gap: var(--space-lg);
  }

  .film__info {
    flex-direction: column;
    gap: 0.2rem;
  }

  .contact__submit {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-sm);
  }

  h1 {
    letter-spacing: 0.1em;
  }
}