/* Feeltr — Liquid Glass (iOS 27) look */

:root {
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --rounded: ui-rounded, -apple-system, "SF Pro Rounded", var(--sans);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
  --accent: #ffd60a;
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --spring: cubic-bezier(0.34, 1.4, 0.64, 1);

  /* Glass over dark content (camera, viewer) */
  --glass-tint: rgba(48, 48, 54, 0.36);
  --glass-hi: rgba(255, 255, 255, 0.24);
  --glass-rim: rgba(255, 255, 255, 0.34);
  --glass-rim-lo: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 10px 30px rgba(0, 0, 0, 0.28), 0 1px 3px rgba(0, 0, 0, 0.2);
  --glass-ink: #fff;
  --glass-ink-2: rgba(255, 255, 255, 0.62);

  /* Diary, light */
  --bg: #f2f2f7;
  --surface: #ffffff;
  --label: #000000;
  --label-2: rgba(60, 60, 67, 0.6);
  --fill: rgba(120, 120, 128, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --surface: #1c1c1e;
    --label: #ffffff;
    --label-2: rgba(235, 235, 245, 0.6);
    --fill: rgba(120, 120, 128, 0.24);
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; background: #000; color: #fff; }
body {
  font: 17px/1.3 var(--sans);
  letter-spacing: -0.01em;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
[hidden] { display: none !important; }
.mono { font-family: var(--mono); letter-spacing: 0.02em; }

.screen { position: fixed; inset: 0; height: 100dvh; }

/* ---------- Liquid Glass material ---------- */
.glass {
  position: relative;
  color: var(--glass-ink);
  background:
    linear-gradient(165deg, var(--glass-hi) 0%, rgba(255, 255, 255, 0) 38%, rgba(255, 255, 255, 0) 72%, rgba(255, 255, 255, 0.07) 100%),
    var(--glass-tint);
  -webkit-backdrop-filter: blur(24px) saturate(190%) brightness(1.05);
  backdrop-filter: blur(24px) saturate(190%) brightness(1.05);
  box-shadow:
    inset 0 1px 0.5px var(--glass-rim),
    inset 0 -1px 0.5px var(--glass-rim-lo),
    inset 0 0 0 0.5px rgba(255, 255, 255, 0.14),
    var(--glass-shadow);
  transition: transform 0.35s var(--spring), background-color 0.3s, box-shadow 0.3s;
}
button.glass:active, .glass button:active { transform: scale(0.94); }
.capsule { border-radius: 999px; }
.circle {
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
}
.circle svg { width: 22px; height: 22px; stroke-width: 2; }

/* ---------- Camera ---------- */
.camera { background: #000; --tray-h: 188px; }

.viewfinder {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  padding: calc(var(--safe-t) + 62px) 0 calc(var(--safe-b) + var(--tray-h) + 22px);
}
.frame { position: relative; line-height: 0; border-radius: 22px; overflow: hidden; }
#preview { display: block; background: #0b0b0c; }
#video { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.cam-top {
  position: absolute; left: 0; right: 0; top: calc(var(--safe-t) + 8px); z-index: 2;
  display: flex; align-items: center; justify-content: space-between; padding: 0 14px;
}
.cam-top .capsule { height: 40px; }
#btnFormat { min-width: 58px; padding: 0 14px; font-size: 13px; font-weight: 600; }
.counter { display: grid; place-items: center; padding: 0 14px; font-size: 12px; color: var(--glass-ink-2); }
.group { display: flex; align-items: center; padding: 0 3px; }
.icon-btn { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; transition: transform 0.3s var(--spring); }
.icon-btn svg { width: 22px; height: 22px; }

.mx-badge {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 6px;
  line-height: 1; padding: 7px 12px 7px 10px; border-radius: 999px;
  font: 600 12px/1 var(--mono);
}
.mx-badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.still-chip {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 6px;
  line-height: 1; padding: 9px 12px 9px 14px; border-radius: 999px; font-size: 14px; font-weight: 500; white-space: nowrap;
}
.still-chip svg { width: 15px; height: 15px; stroke-width: 2.2; }
.flash { position: absolute; inset: 0; background: #fff; opacity: 0; pointer-events: none; }
.flash.on { animation: flash 0.35s ease-out; }
@keyframes flash { 0% { opacity: 0.85; } 100% { opacity: 0; } }

.vf-message {
  position: absolute; left: 24px; right: 24px; top: 50%; transform: translateY(-50%);
  max-width: 340px; margin: 0 auto; padding: 28px 22px 22px; border-radius: 32px;
  display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center;
}
.vf-icon { width: 40px; height: 40px; opacity: 0.85; }
.vf-message p { margin: 0 0 6px; color: var(--glass-ink-2); font-size: 15px; line-height: 1.35; }
.vf-actions { display: flex; flex-direction: column; gap: 10px; width: 100%; }

.btn {
  height: 50px; padding: 0 20px; border-radius: 999px; font-size: 17px; font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: rgba(255, 255, 255, 0.14); color: #fff;
  box-shadow: inset 0 1px 0.5px rgba(255, 255, 255, 0.25), inset 0 0 0 0.5px rgba(255, 255, 255, 0.1);
  transition: transform 0.35s var(--spring);
}
.btn svg { width: 20px; height: 20px; stroke-width: 2; }
.btn.primary { background: #fff; color: #000; }
.btn:active { transform: scale(0.96); }
.link-btn { font-size: 15px; font-weight: 500; color: var(--accent); padding: 2px 8px; }

/* Segmented control with a sliding glass lens */
.segmented {
  position: relative; display: grid; grid-template-columns: repeat(var(--n), 1fr);
  padding: 3px; border-radius: 999px; background: rgba(118, 118, 128, 0.24);
  --i: 0;
}
.seg-lens {
  position: absolute; top: 3px; bottom: 3px; left: 3px;
  width: calc((100% - 6px) / var(--n));
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0.16));
  box-shadow: inset 0 1px 0.5px rgba(255, 255, 255, 0.55), inset 0 -0.5px 0.5px rgba(255, 255, 255, 0.15), 0 3px 10px rgba(0, 0, 0, 0.25);
  transform: translateX(calc(100% * var(--i)));
  transition: transform 0.45s var(--spring);
}
.segmented button {
  position: relative; z-index: 1; height: 34px; padding: 0 10px; border-radius: 999px;
  font-size: 14px; font-weight: 500; color: var(--glass-ink-2); white-space: nowrap;
  display: flex; align-items: center; justify-content: center; gap: 7px;
  transition: color 0.25s;
}
.segmented button[aria-checked="true"] { color: #fff; font-weight: 600; }

.mx-panel {
  position: absolute; left: 14px; right: 14px; z-index: 2;
  bottom: calc(var(--safe-b) + var(--tray-h) + 22px);
  max-width: 400px; margin: 0 auto; padding: 12px 14px 10px; border-radius: 28px;
  display: flex; flex-direction: column; align-items: stretch; gap: 10px;
}
.mx-panel .link-btn { align-self: center; }
.mix { display: flex; align-items: center; gap: 12px; padding: 0 6px; font-size: 12px; color: var(--glass-ink-2); }

/* iOS-style slider */
input[type="range"] {
  --p: 50%;
  flex: 1; height: 28px; margin: 0; background: transparent; -webkit-appearance: none; appearance: none;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px; border-radius: 3px;
  background: linear-gradient(90deg, #fff 0 var(--p), rgba(255, 255, 255, 0.22) var(--p) 100%);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 28px; height: 28px; margin-top: -11px; border-radius: 50%;
  background: #fff; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3), 0 0 0 0.5px rgba(0, 0, 0, 0.06);
}
input[type="range"]::-moz-range-track { height: 6px; border-radius: 3px; background: rgba(255, 255, 255, 0.22); }
input[type="range"]::-moz-range-progress { height: 6px; border-radius: 3px; background: #fff; }
input[type="range"]::-moz-range-thumb { width: 28px; height: 28px; border: 0; border-radius: 50%; background: #fff; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3); }

.tray {
  position: absolute; left: 10px; right: 10px; z-index: 2;
  bottom: calc(var(--safe-b) + 10px);
  max-width: 460px; margin: 0 auto; padding: 12px 12px 14px; border-radius: 40px;
  display: flex; flex-direction: column; gap: 14px;
}
.filters button { height: 38px; font-size: 15px; }
.swatch { width: 18px; height: 18px; border-radius: 50%; flex: none; box-shadow: inset 0 0 0 0.5px rgba(255, 255, 255, 0.4); }
.swatch.nn { background: linear-gradient(135deg, #f6c77d 0%, #d67d4c 50%, #2f4f52 100%); }
.swatch.mono-sw { background: linear-gradient(135deg, #f4f1ec 0%, #8b8b8b 50%, #151515 100%); }

.controls { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 10px; }
.thumb-btn {
  justify-self: start; width: 52px; height: 52px; border-radius: 14px; overflow: hidden;
  display: grid; place-items: center; background: rgba(118, 118, 128, 0.3);
  box-shadow: inset 0 0 0 0.5px rgba(255, 255, 255, 0.3), 0 4px 12px rgba(0, 0, 0, 0.25);
  transition: transform 0.35s var(--spring);
}
.thumb-btn:active { transform: scale(0.92); }
.thumb-btn img { width: 100%; height: 100%; object-fit: cover; }
.thumb-btn svg { width: 24px; height: 24px; color: var(--glass-ink-2); }
.thumb-btn.pop { animation: pop 0.5s var(--spring); }
@keyframes pop { 40% { transform: scale(1.14); } }

.shutter {
  width: 80px; height: 80px; border-radius: 50%; border: 4px solid #fff;
  display: grid; place-items: center;
}
.shutter span {
  width: 64px; height: 64px; border-radius: 50%; background: #fff;
  transition: transform 0.25s var(--spring), background 0.3s;
}
.shutter:active span { transform: scale(0.88); }
.shutter.second span { background: var(--accent); }
.shutter.busy span { transform: scale(0.82); opacity: 0.55; animation: develop 0.9s ease-in-out infinite alternate; }
@keyframes develop { to { opacity: 0.9; } }

.mx-btn { justify-self: end; width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; }
.mx-btn svg { width: 28px; height: 21px; stroke-width: 2; }
.mx-btn[aria-pressed="true"] {
  color: #000;
  --glass-tint: rgba(255, 214, 10, 0.88);
  --glass-hi: rgba(255, 255, 255, 0.5);
}

/* ---------- Diary ---------- */
.diary { background: var(--bg); color: var(--label); }
.diary .glass {
  --glass-tint: rgba(255, 255, 255, 0.55);
  --glass-hi: rgba(255, 255, 255, 0.7);
  --glass-rim: rgba(255, 255, 255, 0.9);
  --glass-rim-lo: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 6px 20px rgba(0, 0, 0, 0.1), 0 0 0 0.5px rgba(0, 0, 0, 0.06);
  color: var(--label);
}
@media (prefers-color-scheme: dark) {
  .diary .glass {
    --glass-tint: rgba(44, 44, 48, 0.55);
    --glass-hi: rgba(255, 255, 255, 0.16);
    --glass-rim: rgba(255, 255, 255, 0.28);
    --glass-rim-lo: rgba(255, 255, 255, 0.06);
    --glass-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  }
}

.scroll-edge {
  position: absolute; left: 0; right: 0; top: 0; z-index: 2; pointer-events: none;
  height: calc(var(--safe-t) + 76px);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  -webkit-mask-image: linear-gradient(#000 55%, transparent);
  mask-image: linear-gradient(#000 55%, transparent);
  opacity: 0; transition: opacity 0.25s;
}
.nav {
  position: absolute; left: 0; right: 0; top: calc(var(--safe-t) + 8px); z-index: 3;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 16px;
}
.nav #diaryBack { justify-self: start; }
.nav #btnInstall { justify-self: end; height: 40px; padding: 0 16px; font-size: 15px; font-weight: 600; }
.nav-title { font-size: 17px; font-weight: 600; opacity: 0; transform: translateY(4px); transition: opacity 0.2s, transform 0.25s var(--ease); }
.diary.scrolled .scroll-edge { opacity: 1; }
.diary.scrolled .nav-title { opacity: 1; transform: none; }

.diary-scroll {
  position: absolute; inset: 0; overflow-y: auto; -webkit-overflow-scrolling: touch;
  padding: calc(var(--safe-t) + 60px) 16px calc(32px + var(--safe-b));
  -webkit-user-select: auto; user-select: auto;
}
.large-title { padding: 4px 4px 4px; transition: opacity 0.2s; }
.large-title h1 { margin: 0; font: 700 34px/1.15 var(--sans); letter-spacing: 0.01em; }
.large-title p { margin: 2px 0 0; font-size: 15px; color: var(--label-2); min-height: 1em; }
.diary.scrolled .large-title { opacity: 0; }

.tip {
  margin: 14px 0 0; padding: 12px 44px 12px 14px; position: relative;
  display: flex; align-items: center; gap: 12px;
  border-radius: 22px; font-size: 14px; line-height: 1.35; background: var(--surface);
}
.tip > svg { width: 24px; height: 24px; flex: none; color: #0a84ff; }
.tip button { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--fill); color: var(--label-2); }
.tip button svg { width: 14px; height: 14px; stroke-width: 2.4; }

.day { padding-top: 22px; }
.day h2 { display: flex; flex-direction: column; margin: 0 4px 10px; font-weight: 400; }
.day .d-num { font: 700 22px/1.2 var(--sans); }
.day .d-rest { font-size: 15px; color: var(--label-2); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; border-radius: 22px; overflow: hidden; }
.print { position: relative; display: block; width: 100%; overflow: hidden; }
.print img { display: block; width: 100%; aspect-ratio: 3 / 4; object-fit: cover; background: var(--fill); transition: transform 0.35s var(--spring), filter 0.2s; }
.print:active img { transform: scale(0.96); filter: brightness(0.85); }
.print .p-time {
  position: absolute; left: 7px; bottom: 6px; font: 600 11px/1 var(--sans); color: #fff;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.55);
}
.print .p-badge {
  position: absolute; top: 6px; right: 6px; padding: 4px 7px; border-radius: 999px;
  font: 700 10px/1 var(--sans); color: #fff;
  background: rgba(30, 30, 30, 0.35);
  -webkit-backdrop-filter: blur(10px) saturate(180%); backdrop-filter: blur(10px) saturate(180%);
  box-shadow: inset 0 0.5px 0 rgba(255, 255, 255, 0.5), inset 0 0 0 0.5px rgba(255, 255, 255, 0.2);
}
.print .p-note { position: absolute; right: 7px; bottom: 5px; font-size: 11px; color: #fff; text-shadow: 0 1px 4px rgba(0, 0, 0, 0.55); }

.empty { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 18vh 32px 40px; }
.empty-icon { width: 72px; height: 72px; border-radius: 22px; display: grid; place-items: center; background: var(--fill); margin-bottom: 14px; color: var(--label-2); }
.empty-icon svg { width: 40px; height: 30px; }
.empty p { margin: 2px 0; font-size: 20px; font-weight: 600; }
.empty .muted { font-size: 15px; font-weight: 400; color: var(--label-2); }

/* ---------- Viewer ---------- */
.viewer { position: fixed; inset: 0; height: 100dvh; z-index: 10; background: #000; color: #fff; }
.viewer-stage {
  position: absolute; inset: 0; display: grid; place-items: center; touch-action: pan-y;
  padding: calc(var(--safe-t) + 62px) 0 calc(var(--safe-b) + 150px);
}
.viewer-stage img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; transition: opacity 0.15s; }
.viewer-top {
  position: absolute; left: 0; right: 0; top: calc(var(--safe-t) + 8px); z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 0 14px;
}
.viewer-meta { min-width: 0; padding: 6px 16px; text-align: center; font-size: 14px; font-weight: 600; line-height: 1.25; }
.viewer-meta .vm-sub { font: 500 11px/1.3 var(--sans); color: var(--glass-ink-2); }
.viewer-bottom {
  position: absolute; left: 10px; right: 10px; bottom: calc(var(--safe-b) + 10px); z-index: 2;
  max-width: 520px; margin: 0 auto; padding: 10px; border-radius: 32px;
  display: flex; flex-direction: column; gap: 10px;
}
.viewer-bottom textarea {
  width: 100%; resize: none; border: 0; border-radius: 22px; outline: none;
  background: rgba(118, 118, 128, 0.24); color: #fff; padding: 12px 16px;
  font: 16px/1.35 var(--sans);
  -webkit-user-select: text; user-select: text;
}
.viewer-bottom textarea::placeholder { color: rgba(235, 235, 245, 0.45); }
.viewer-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* ---------- Toast ---------- */
.toast {
  --glass-tint: rgba(28, 28, 32, 0.72);
  position: fixed; left: 50%; top: calc(var(--safe-t) + 60px); z-index: 20;
  transform: translate(-50%, -12px) scale(0.96); opacity: 0; pointer-events: none;
  max-width: calc(100% - 40px); padding: 11px 18px; border-radius: 999px;
  font-size: 15px; font-weight: 500; text-align: center;
  transition: opacity 0.25s, transform 0.45s var(--spring);
}
.toast.show { opacity: 1; transform: translate(-50%, 0) scale(1); }

@media (min-width: 700px) {
  .grid { grid-template-columns: repeat(5, 1fr); }
  .diary-scroll { padding-left: 40px; padding-right: 40px; }
}
@media (max-height: 680px) {
  .camera { --tray-h: 172px; }
  .tray { gap: 10px; }
  .shutter { width: 70px; height: 70px; }
  .shutter span { width: 56px; height: 56px; }
}