/* ============================================
   Studio Dotbox - Main stylesheet (dark theme)
   ============================================ */

:root {
  --color-red: #E8000D;
  --color-bg: #0A0A0A;
  --color-text: #EEEEEE;
  --color-text-muted: #999999;
  --color-line: #2A2A2A;
  --color-surface: #161616;
  --color-surface-2: #1F1F1F;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --size-display: 88px;
  --size-h1: 56px;
  --size-h2: 40px;
  --size-h3: 24px;
  --size-body-large: 20px;
  --size-body: 17px;
  --size-small: 14px;
  --size-micro: 12px;

  --weight-light: 300;
  --weight-medium: 500;
  --weight-bold: 700;

  --space-xs: 16px;
  --space-s: 32px;
  --space-m: 80px;
  --space-l: 160px;
  --space-xl: 240px;

  --max-content-width: 1280px;
  --side-padding: 80px;

  --line-body: 1.6;
  --line-tight: 1.3;

  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 200ms var(--ease-default);
  --transition-base: 300ms var(--ease-default);
  --transition-slow: 500ms var(--ease-default);
}

@media (max-width: 768px) {
  :root {
    --size-display: 52px;
    --size-h1: 40px;
    --size-h2: 32px;
    --size-h3: 22px;
    --size-body-large: 18px;
    --size-body: 16px;
    --size-small: 13px;
    --size-micro: 11px;
    --side-padding: 24px;
    --space-l: 80px;
    --space-xl: 120px;
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-weight: var(--weight-light);
  font-size: var(--size-body);
  line-height: var(--line-body);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-red); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; font-size: inherit; border: none; background: none; cursor: pointer; color: inherit; }
ul, ol { list-style: none; }

::selection { background: var(--color-red); color: var(--color-text); }

.display { font-size: var(--size-display); font-weight: var(--weight-light); line-height: var(--line-tight); letter-spacing: -0.02em; }
.h1 { font-size: var(--size-h1); font-weight: var(--weight-light); line-height: var(--line-tight); letter-spacing: -0.02em; }
.h2 { font-size: var(--size-h2); font-weight: var(--weight-medium); line-height: var(--line-tight); letter-spacing: -0.01em; }
.h3 { font-size: var(--size-h3); font-weight: var(--weight-medium); line-height: 1.4; }
.body-large { font-size: var(--size-body-large); font-weight: var(--weight-light); line-height: 1.5; }
.small { font-size: var(--size-small); font-weight: var(--weight-medium); }
.micro { font-size: var(--size-micro); font-weight: var(--weight-medium); text-transform: uppercase; letter-spacing: 0.08em; }
.red { color: var(--color-red); }
.muted { color: var(--color-text-muted); }

.container { max-width: var(--max-content-width); margin: 0 auto; padding: 0 var(--side-padding); }
.container-narrow { max-width: 760px; margin: 0 auto; padding: 0 var(--side-padding); }
.section { padding: var(--space-l) 0; }
.section-tight { padding: var(--space-m) 0; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}
.site-header.scrolled { border-bottom-color: var(--color-line); }
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max-content-width); margin: 0 auto;
  padding: 24px var(--side-padding);
}
.site-header__logo { display: flex; align-items: center; }
.site-header__logo svg, .site-header__logo img { width: 160px; height: auto; display: block; }
.site-header__nav { display: flex; gap: 40px; }
.site-header__nav a { font-size: var(--size-small); font-weight: var(--weight-medium); position: relative; color: var(--color-text); }
.site-header__nav a.active::after {
  content: ""; position: absolute; bottom: -6px; left: 0; right: 0;
  height: 1px; background: var(--color-red);
}
.site-header__menu-toggle { display: none; }

@media (max-width: 768px) {
  .site-header__nav { display: none; }
  .site-header__menu-toggle { display: flex; flex-direction: column; gap: 5px; padding: 8px; }
  .site-header__menu-toggle span {
    width: 24px; height: 1.5px;
    background: var(--color-text);
    transition: transform var(--transition-fast);
  }
  .site-header__logo svg, .site-header__logo img { width: 130px; }
}

.mobile-menu {
  position: fixed; top: 0; right: 0; width: 100%; max-width: 400px; height: 100vh;
  background: var(--color-bg); z-index: 200;
  border-left: 1px solid var(--color-line);
  transform: translateX(100%); transition: transform var(--transition-base);
  padding: 32px var(--side-padding);
  display: flex; flex-direction: column; overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu__close { align-self: flex-end; font-size: 28px; margin-bottom: 32px; line-height: 1; color: var(--color-text); }
.mobile-menu__primary { display: flex; flex-direction: column; gap: 24px; margin-bottom: 32px; }
.mobile-menu__primary a { font-size: 32px; font-weight: var(--weight-light); line-height: var(--line-tight); }
.mobile-menu__divider { height: 1px; background: var(--color-line); margin: 16px 0; }
.mobile-menu__secondary { display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; }
.mobile-menu__secondary a { font-size: var(--size-body); font-weight: var(--weight-medium); }
.mobile-menu__overlay {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.6);
  opacity: 0; pointer-events: none; transition: opacity var(--transition-base); z-index: 199;
}
.mobile-menu__overlay.visible { opacity: 1; pointer-events: auto; }

.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-line);
  padding: var(--space-m) 0 var(--space-s);
  color: var(--color-text);
}
.site-footer__inner { max-width: var(--max-content-width); margin: 0 auto; padding: 0 var(--side-padding); }
.site-footer__columns {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 48px; margin-bottom: var(--space-m);
}
@media (max-width: 1024px) { .site-footer__columns { grid-template-columns: repeat(2, 1fr); gap: 40px; } }
@media (max-width: 600px) { .site-footer__columns { grid-template-columns: 1fr; gap: 32px; } }

.site-footer__column h4 {
  font-size: var(--size-micro); font-weight: var(--weight-medium);
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-text-muted); margin-bottom: 16px;
}
.site-footer__column p, .site-footer__column a {
  font-size: var(--size-small); display: block;
  margin-bottom: 8px; line-height: 1.6;
  color: var(--color-text);
}
.site-footer__column p { color: var(--color-text-muted); }

.site-footer__logo { margin-bottom: 12px; }
.site-footer__logo svg, .site-footer__logo img { width: 150px; height: auto; display: block; }

.site-footer__subscribe { margin-top: 16px; }
.site-footer__subscribe p { margin-top: 24px; font-style: italic; color: var(--color-text-muted); }
.site-footer__subscribe input {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--color-line); background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit; font-size: var(--size-small); margin-bottom: 8px;
}
.site-footer__subscribe input:focus { outline: none; border-color: var(--color-red); }
.site-footer__subscribe button {
  font-size: var(--size-small); font-weight: var(--weight-medium);
  padding: 10px 16px; border: 1px solid var(--color-text);
  color: var(--color-text);
  transition: all var(--transition-fast);
  background: transparent;
}
.site-footer__subscribe button:hover { background: var(--color-red); border-color: var(--color-red); color: var(--color-text); }

.site-footer__bar {
  display: flex; justify-content: space-between;
  padding-top: 24px; border-top: 1px solid var(--color-line);
  font-size: var(--size-small); color: var(--color-text-muted);
}
.site-footer__bar a { color: var(--color-text-muted); margin-left: 16px; display: inline; }
.site-footer__bar > div a:first-child { margin-left: 0; }
@media (max-width: 600px) {
  .site-footer__bar { flex-direction: column; gap: 12px; align-items: flex-start; }
  .site-footer__bar a { margin-left: 0; margin-right: 16px; }
}

.btn {
  display: inline-block; padding: 14px 28px;
  font-size: var(--size-body); font-weight: var(--weight-medium);
  border: 1px solid var(--color-text); background: transparent; color: var(--color-text);
  transition: all var(--transition-fast); cursor: pointer;
}
.btn:hover { background: var(--color-red); border-color: var(--color-red); color: var(--color-text); }
.btn--primary { background: var(--color-text); color: var(--color-bg); }
.btn--primary:hover { background: var(--color-red); border-color: var(--color-red); color: var(--color-text); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: var(--weight-medium);
  transition: gap var(--transition-fast), color var(--transition-fast);
}
.link-arrow:hover { gap: 12px; color: var(--color-red); }

.form-field { margin-bottom: 32px; }
.form-field label { display: block; font-size: var(--size-small); font-weight: var(--weight-medium); margin-bottom: 8px; }
.form-field .required { color: var(--color-red); }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 14px 16px;
  font-family: inherit; font-size: var(--size-body);
  border: 1px solid var(--color-line); background: var(--color-surface);
  color: var(--color-text); font-weight: var(--weight-light);
  transition: border-color var(--transition-fast);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: none; border-color: var(--color-red); }
.form-field textarea { min-height: 140px; resize: vertical; }
.form-field .help-text { font-size: var(--size-small); color: var(--color-text-muted); margin-top: 6px; }

/* Image placeholder utility */
.image-placeholder {
  background: var(--color-surface);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); font-size: var(--size-small);
  position: relative; overflow: hidden;
}
.image-placeholder::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 49%, rgba(232, 0, 13, 0.15) 50%, transparent 51%);
}
.image-placeholder img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}

.reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity 600ms var(--ease-default), transform 600ms var(--ease-default);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}