/* ============================================================
   Vesper.ai cover — inserted as first screen of the homepage.
   All selectors are namespaced under #vesper to avoid any clash
   with the existing personal-site stylesheet.
   ============================================================ */
#vesper {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  width: 100%;
  overflow: hidden;
  background: #000;
  color: #fff;
  --v-bg: #000;
  --v-text: #fff;
  --v-muted: #9a9a9a;
  --v-stat: #d8d8d8;
  --v-border: rgba(255, 255, 255, 0.16);
  --v-logo: 15.5px;
  --v-logo-mark: 22px;
  --v-nav: 14px;
  --v-nav-h: 40px;
  --v-btn: 13.5px;
  --v-btn-h: 40px;
  --v-hbtn-h: 42px;
  --v-h1: 48px;
  --v-lede: 15.5px;
  --v-badge: 12.5px;
  --v-stat-size: 13.5px;
  --v-hy: 22px;
  --v-hx: 40px;
  --v-sx: 72px;
  --v-sy: 36px;
  --v-gap: 85px;
  --v-copy: 860px;
  --v-lede-max: 470px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
#vesper *, #vesper *:before, #vesper *:after { box-sizing: border-box; margin: 0; padding: 0; }
#vesper a { color: inherit; text-decoration: none; }
#vesper button { font-family: inherit; color: inherit; }
#vesper em { font-style: italic; }

/* ---- layer stack (back -> front): bg, photo+scrim, page, grain ---- */
#vesper .v-grain {
  position: absolute; inset: 0; z-index: 100; pointer-events: none; opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.06'/%3E%3C/svg%3E");
}
#vesper .v-photo { position: absolute; inset: 0; z-index: 0; background: #000; overflow: hidden; }
#vesper .v-photo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.28) 0%, transparent 34%, rgba(0,0,0,0.18) 62%, rgba(0,0,0,0.66) 100%);
  pointer-events: none;
}
#vesper .v-photo video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

#vesper .v-page {
  position: relative; z-index: 1;
  display: grid; grid-template-rows: auto 1fr auto;
  min-height: 100vh; min-height: 100dvh;
}

/* ---- Header: 3-column grid ---- */
#vesper .v-header {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: var(--v-hy) var(--v-hx) 10px;
  z-index: 50; position: relative;
}
#vesper .v-logo { display: inline-flex; align-items: center; gap: 9px; justify-self: start; font-size: var(--v-logo); font-weight: 600; letter-spacing: -0.03em; color: #fff; }
#vesper .v-logo .v-suffix { font-weight: 400; }
#vesper .v-logo svg { width: var(--v-logo-mark); height: var(--v-logo-mark); display: block; }

#vesper .v-nav { display: flex; align-items: center; gap: 8px; justify-self: center; }
#vesper .v-nav a {
  height: var(--v-nav-h); padding: 0 18px; border-radius: 7px;
  display: inline-flex; align-items: center; white-space: nowrap;
  border: 1px solid rgba(198, 198, 198, 0.55);
  background: linear-gradient(105deg, #050505 0%, #2a2a2a 48%, #4a4a4a 100%);
  color: #f3f3f3; font-size: var(--v-nav); font-weight: 400; letter-spacing: -0.01em;
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
#vesper .v-nav a::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,0.16) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform 0.6s ease;
}
#vesper .v-nav a:hover { border-color: rgba(235,235,235,0.9); background: linear-gradient(105deg, #111 0%, #3a3a3a 45%, #6a6a6a 100%); box-shadow: 0 0 18px rgba(200,210,230,0.18); }
#vesper .v-nav a:hover::before { transform: translateX(120%); }

/* ---- Buttons (liquid glass) ---- */
#vesper .v-btn {
  position: relative; isolation: isolate; overflow: hidden; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  height: var(--v-btn-h); padding: 0 16px; border-radius: 6px;
  font-size: var(--v-btn); font-weight: 500; letter-spacing: -0.02em; line-height: 1;
  white-space: nowrap; transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease, filter 0.35s ease;
}
#vesper .v-btn::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: -1;
  background: linear-gradient(115deg, transparent 20%, rgba(255,255,255,0.45) 48%, transparent 76%);
  transform: translateX(-130%); transition: transform 0.65s ease;
}
#vesper .v-btn:hover::after { transform: translateX(130%); }
#vesper .v-btn-solid {
  background: linear-gradient(180deg, #ffffff 0%, #e7e7e7 48%, #cfcfcf 100%);
  color: #111; border: 1px solid #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,0.95);
}
#vesper .v-btn-solid:hover { background: linear-gradient(180deg, #fff 0%, #f3f6ff 42%, #d5def2 100%); border-color: #f2f6ff; box-shadow: inset 0 1px 0 #fff, 0 0 22px rgba(186,208,255,0.35), 0 8px 18px rgba(255,255,255,0.12); }
#vesper .v-btn-ghost {
  background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(0,0,0,0.5) 46%, rgba(150,170,200,0.1));
  color: #fff; border: 1px solid rgba(198,198,198,0.55);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
}
#vesper .v-btn-ghost:hover { border-color: rgba(220,230,255,0.8); box-shadow: inset 0 1px 0 rgba(255,255,255,0.22), 0 0 24px rgba(170,200,255,0.28); }
#vesper .v-actions .v-btn, #vesper .v-hero .v-btn { height: var(--v-hbtn-h); padding: 0 18px; }

/* ---- burger (phone only) ---- */
#vesper .v-right { display: inline-flex; align-items: center; gap: 8px; justify-self: end; }
#vesper .v-burger {
  display: none; justify-self: end; z-index: 80;
  width: 42px; height: 42px; padding: 0; align-items: center; justify-content: center;
  border-radius: 6px; border: 1px solid var(--v-border); background: rgba(8,8,8,0.55);
  cursor: pointer; transition: border-color 0.25s, background 0.25s;
}
#vesper .v-burger:hover { border-color: rgba(255,255,255,0.32); background: rgba(255,255,255,0.05); }
#vesper .v-burger .v-bar { display: block; width: 16px; height: 1.5px; border-radius: 1px; background: #fff; margin: 2.5px 0; transition: transform 0.25s, opacity 0.2s; }
#vesper.menu-open .v-burger .v-bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
#vesper.menu-open .v-burger .v-bar:nth-child(2) { opacity: 0; }
#vesper.menu-open .v-burger .v-bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

#vesper .v-nav a { position: relative; overflow: hidden; }

/* ---- Hero copy (bottom-centered) ---- */
#vesper .v-hero { display: flex; align-items: flex-end; justify-content: center; padding: 8px 24px var(--v-gap); min-height: 0; }
#vesper .v-copy { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; text-align: center; max-width: var(--v-copy); width: 100%; }

#vesper .v-badge {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 22px; padding: 9px 15px; border: 0; border-radius: 5px;
  background: linear-gradient(90deg, #7d7d7d 0%, #2a2a2a 52%, #0a0a0a 100%);
  color: #f2f2f2; font-size: var(--v-badge); font-weight: 400; letter-spacing: -0.01em;
}
#vesper .v-badge svg { width: 18px; height: 20px; display: block; filter: drop-shadow(0 0 3px rgba(255,255,255,0.45)); }

#vesper h1.v-title { font-family: "Inter", system-ui, sans-serif; font-weight: 500; letter-spacing: -0.045em; line-height: 1.12; color: #fff; font-size: var(--v-h1); }
#vesper .v-hl { display: block; overflow: hidden; padding: 0.06em 0.15em 0.14em; }
#vesper .v-hl .v-mask { display: block; }
#vesper h1 em { font-family: "Instrument Serif", "Times New Roman", Times, serif; font-style: italic; font-weight: 400; font-size: 1.08em; letter-spacing: -0.03em; color: #9a9a9a; }

#vesper .v-lede { max-width: var(--v-lede-max); margin-top: 18px; color: #9a9a9a; font-size: var(--v-lede); font-weight: 400; line-height: 1.55; letter-spacing: -0.015em; }
#vesper .v-actions { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 10px; margin-top: 26px; }

/* ---- Stats footer ---- */
#vesper .v-stats {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 0 var(--v-sx) var(--v-sy);
  padding-bottom: max(var(--v-sy), env(safe-area-inset-bottom));
  color: #d8d8d8;
}
#vesper .v-stat { display: inline-flex; align-items: center; gap: 14px; font-size: var(--v-stat-size); letter-spacing: -0.015em; white-space: nowrap; }
#vesper .v-stat svg { width: 20px; height: 20px; display: block; color: #e8e8e8; flex: 0 0 auto; }
#vesper .v-stat .v-wide { width: 38px; height: 21px; }

/* ---- Menu backdrop / phone nav ---- */
#vesper .v-backdrop {
  position: fixed; inset: 0; z-index: 40; background: rgba(8,8,8,0.42);
  opacity: 0; visibility: hidden; transition: opacity 0.28s ease, visibility 0.28s;
  pointer-events: none;
}
#vesper.menu-open .v-backdrop { opacity: 1; visibility: visible; backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); pointer-events: auto; }

/* ---- Entrance motion ---- */
#vesper .v-appear { opacity: 1; animation-duration: 1.05s; animation-fill-mode: both; animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1); animation-delay: var(--d, 0.08s); }
#vesper .v-scale { animation-name: vInScale; }
#vesper .v-soft { animation-name: vInSoft; }
#vesper .v-mask-line { animation-name: vInMask; }
#vesper .v-pop { animation-name: vInPop; }
#vesper .v-btn-in { animation-name: vInBtn; }
#vesper .v-side { animation-name: vInSide; }
#vesper .v-stat-in { animation-name: vInStat; }
#vesper.is-in .v-appear, #vesper.is-in .v-mask-line { animation: none; opacity: 1; transform: none; }
#vesper .v-star { display: inline-block; animation: vInStar 0.9s both cubic-bezier(0.16, 1, 0.3, 1) 0.28s; }
#vesper h1 em { animation: vInEm 1.2s both ease 0.72s; }
#vesper.is-in .v-star, #vesper.is-in h1 em { animation: none; opacity: 1; filter: none; }

@keyframes vInScale { from { opacity: 0; transform: scale(0.84); } to { opacity: 1; transform: none; } }
@keyframes vInSoft { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes vInMask { from { opacity: 0; transform: translateY(40%); } to { opacity: 1; transform: none; } }
@keyframes vInPop { 0% { opacity: 0; transform: scale(0.9); } 70% { opacity: 1; transform: scale(1.03); } 100% { opacity: 1; transform: none; } }
@keyframes vInBtn { from { opacity: 0; transform: translateY(18px) scale(0.94); } to { opacity: 1; transform: none; } }
@keyframes vInSide { from { opacity: 0; transform: translateX(22px); } to { opacity: 1; transform: none; } }
@keyframes vInStat { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
@keyframes vInStar { 0% { transform: scale(0.2) rotate(-50deg); } 65% { transform: scale(1.2) rotate(8deg); } 100% { transform: none; } }
@keyframes vInEm { from { opacity: 0.35; filter: blur(4px); } to { opacity: 1; filter: none; } }

/* ---- Responsive ---- */
@media (min-width: 1600px) {
  #vesper { --v-logo: 17px; --v-logo-mark: 24px; --v-nav: 15px; --v-nav-h: 44px; --v-btn: 15px; --v-btn-h: 44px; --v-hbtn-h: 48px; --v-h1: 64px; --v-lede: 18px; --v-badge: 13.5px; --v-stat-size: 15px; --v-hy: 28px; --v-hx: 64px; --v-sx: 96px; --v-sy: 44px; --v-copy: 980px; --v-lede-max: 540px; }
  #vesper .v-nav a { padding: 0 20px; }
  #vesper .v-badge { margin-bottom: 26px; } #vesper .v-lede { margin-top: 22px; } #vesper .v-actions { margin-top: 30px; gap: 12px; }
  #vesper .v-stat svg { width: 22px; height: 22px; } #vesper .v-stat .v-wide { width: 45px; height: 24px; }
}
@media (min-width: 1920px) {
  #vesper { --v-logo: 18px; --v-logo-mark: 26px; --v-nav: 16px; --v-nav-h: 48px; --v-btn: 16px; --v-btn-h: 48px; --v-hbtn-h: 52px; --v-h1: 76px; --v-lede: 20px; --v-badge: 14.5px; --v-stat-size: 16px; --v-hy: 32px; --v-hx: 80px; --v-sx: 120px; --v-sy: 52px; --v-copy: 1120px; --v-lede-max: 620px; }
  #vesper .v-nav { gap: 10px; } #vesper .v-nav a { padding: 0 22px; }
  #vesper .v-actions .v-btn { padding: 0 22px; } #vesper .v-badge { padding: 10px 15px; }
  #vesper .v-stat .v-wide { width: 48px; height: 26px; }
}
@media (min-width: 2560px) {
  #vesper { --v-h1: 88px; --v-lede: 22px; --v-hx: 120px; --v-sx: 160px; --v-copy: 1280px; --v-lede-max: 680px; }
}
@media (min-width: 1280px) and (max-width: 1599px) {
  #vesper { --v-h1: 54px; --v-lede: 16px; --v-hx: 48px; --v-sx: 80px; --v-copy: 900px; }
}
@media (min-width: 901px) and (max-width: 1279px) {
  #vesper { --v-logo: 15px; --v-nav: 13px; --v-nav-h: 36px; --v-btn: 13px; --v-btn-h: 38px; --v-hbtn-h: 40px; --v-h1: 42px; --v-lede: 15px; --v-badge: 12px; --v-stat-size: 12.5px; --v-hy: 16px; --v-hx: 28px; --v-sy: 28px; --v-gap: 64px; --v-copy: 760px; --v-lede-max: 440px; }
  #vesper .v-nav a { padding: 0 14px; }
  #vesper .v-badge { margin-bottom: 16px; } #vesper .v-lede { margin-top: 14px; } #vesper .v-actions { margin-top: 20px; }
}
@media (min-width: 901px) and (max-height: 850px) {
  #vesper { --v-hy: 14px; --v-sy: 24px; --v-gap: 48px; --v-h1: 40px; }
  #vesper .v-badge { margin-bottom: 12px; } #vesper .v-lede { margin-top: 12px; } #vesper .v-actions { margin-top: 16px; }
}
@media (min-width: 901px) and (max-height: 720px) {
  #vesper { --v-h1: 34px; --v-lede: 14px; --v-gap: 32px; --v-sy: 18px; --v-nav-h: 30px; --v-btn-h: 34px; --v-hbtn-h: 36px; }
  #vesper .v-badge { margin-bottom: 8px; }
}

/* ---- Phone (<= 900px) ---- */
@media (max-width: 900px) {
  #vesper { height: auto; overflow: visible; }
  #vesper .v-page { min-height: 100dvh; }
  #vesper .v-header { grid-template-columns: 1fr auto auto; gap: 8px; padding: 16px 18px 8px; padding-top: max(16px, env(safe-area-inset-top)); }
  #vesper .v-logo { z-index: 80; } #vesper .v-right { position: relative; z-index: 80; }
  #vesper .v-burger { display: inline-flex; }
  #vesper .v-nav {
    position: fixed; inset: 0; z-index: 45; display: none;
    flex-direction: column; align-items: stretch; justify-content: flex-start;
    gap: 12px; padding: 96px 22px 32px;
    padding-top: max(96px, calc(env(safe-area-inset-top) + 88px));
  }
  #vesper.menu-open .v-nav { display: flex; }
  #vesper .v-nav a { justify-content: center; height: 56px; font-size: 19px; border-radius: 10px; }
  #vesper .v-hero { padding: 20px 20px 64px; align-items: flex-end; }
  #vesper .v-copy { max-width: 100%; }
  #vesper .v-stats { flex-direction: column; align-items: center; gap: 16px; white-space: normal; padding: 0 28px 28px; }
  #vesper .v-badge { margin-bottom: 14px; }
  #vesper .v-lede { max-width: 100%; }
  #vesper { --v-logo: 16px; --v-btn: 15px; --v-btn-h: 46px; --v-hbtn-h: 48px; --v-h1: 36px; --v-lede: 16.5px; --v-badge: 13.5px; --v-stat-size: 15px; --v-gap: 36px; }
  #vesper .v-photo::after { background: linear-gradient(180deg, rgba(0,0,0,0.4) 0%, transparent 36%, rgba(0,0,0,0.2) 64%, rgba(0,0,0,0.7) 100%); }
}
@media (max-width: 560px) {
  #vesper { --v-h1: 34px; --v-lede: 16px; }
  #vesper .v-header { padding-left: 16px; padding-right: 16px; }
  #vesper .v-header .v-btn { display: none; }
  #vesper .v-header { grid-template-columns: 1fr auto; }
  #vesper .v-actions { flex-direction: column; width: 100%; }
  #vesper .v-actions .v-btn { width: 100%; }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  #vesper *, #vesper *::before, #vesper *::after { animation: none !important; transition: none !important; }
  #vesper .v-appear, #vesper .v-mask-line, #vesper .v-star, #vesper h1 em { opacity: 1 !important; transform: none !important; filter: none !important; clip-path: none !important; }
}