:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Segoe UI", sans-serif;
  font-synthesis: none;
  --bg: #f2f2f7;
  --card: rgba(255,255,255,.94);
  --modal: rgba(255,255,255,.98);
  --input: #f2f2f7;
  --input-focus: #fff;
  --text-primary: #000;
  --text-secondary: rgba(60,60,67,.6);
  --text-label: rgba(20,20,22,.82);
  --placeholder: rgba(60,60,67,.34);
  --border: rgba(60,60,67,.18);
  --border-soft: rgba(60,60,67,.11);
  --focus: rgba(28,28,30,.16);
  --button-primary: #1c1c1e;
  --button-primary-hover: #323234;
  --button-primary-text: #fff;
  --neutral: #e5e5ea;
  --neutral-hover: #d8d8dc;
  --neutral-text: #1c1c1e;
  --close-bg: #e5e5ea;
  --close-hover: #d8d8dc;
  --close-text: rgba(60,60,67,.72);
  --menu: rgba(255,255,255,.96);
  --menu-hover: rgba(60,60,67,.08);
  --shadow: rgba(0,0,0,.12);
  --overlay: rgba(0,0,0,.38);
  --success: #34c759;
  --success-soft: rgba(52,199,89,.1);
  --success-border: rgba(52,199,89,.34);
  --danger: #ff3b30;
  --danger-title: #ff3b30;
  --danger-soft: rgba(255,59,48,.08);
  --danger-border: rgba(255,59,48,.4);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #000;
  --card: rgba(28,28,30,.88);
  --modal: rgba(28,28,30,.97);
  --input: #2c2c2e;
  --input-focus: #303033;
  --text-primary: #fff;
  --text-secondary: rgba(235,235,245,.6);
  --text-label: rgba(255,255,255,.82);
  --placeholder: rgba(235,235,245,.3);
  --border: rgba(255,255,255,.13);
  --border-soft: rgba(255,255,255,.09);
  --focus: rgba(255,255,255,.1);
  --button-primary: #fff;
  --button-primary-hover: rgba(255,255,255,.88);
  --button-primary-text: #000;
  --neutral: #3a3a3c;
  --neutral-hover: #48484a;
  --neutral-text: #fff;
  --close-bg: #2c2c2e;
  --close-hover: #3a3a3c;
  --close-text: rgba(235,235,245,.72);
  --menu: rgba(44,44,46,.96);
  --menu-hover: rgba(255,255,255,.08);
  --shadow: rgba(0,0,0,.42);
  --overlay: rgba(0,0,0,.68);
  --danger: #ff453a;
  --danger-title: #ff5a52;
  --danger-soft: rgba(255,69,58,.09);
  --danger-border: rgba(255,69,58,.38);
}

[data-theme="light"] { color-scheme: light; }
* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(20px + env(safe-area-inset-top)) calc(20px + env(safe-area-inset-right)) calc(20px + env(safe-area-inset-bottom)) calc(20px + env(safe-area-inset-left));
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  transition: color .18s ease, background-color .18s ease;
}
button, input { font: inherit; }

.theme-control {
  position: fixed;
  z-index: 50;
  top: calc(16px + env(safe-area-inset-top));
  right: calc(16px + env(safe-area-inset-right));
}
.theme-button {
  width: 44px;
  min-height: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--border-soft);
  border-radius: 50%;
  color: var(--text-primary);
  background: var(--card);
  box-shadow: 0 5px 18px var(--shadow);
  backdrop-filter: blur(18px) saturate(120%);
  -webkit-backdrop-filter: blur(18px) saturate(120%);
  font-size: 21px;
}
.card {
  width: min(calc(100vw - 32px - env(safe-area-inset-left) - env(safe-area-inset-right)),420px);
  padding: 27px;
  background: var(--card);
  border: 1px solid var(--border-soft);
  border-radius: 26px;
  box-shadow: 0 16px 45px var(--shadow);
  backdrop-filter: blur(22px) saturate(120%);
  -webkit-backdrop-filter: blur(22px) saturate(120%);
}
header { margin-bottom: 22px; }
h1 { margin: 0; font-size: clamp(28px,5vw,36px); line-height: 1.15; letter-spacing: -.025em; }
.subtitle { margin: 8px 0 0; color: var(--text-secondary); font-size: 15px; }
label { display: block; margin-bottom: 8px; color: var(--text-label); font-size: 14px; font-weight: 600; }
.search-row { display: flex; flex-direction: column; gap: 10px; }
input {
  width: 100%;
  height: 48px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0 15px;
  color: var(--text-primary);
  background: var(--input);
  outline: none;
  caret-color: var(--text-primary);
  font-size: 16px;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
input::placeholder { color: var(--placeholder); }
input:focus { border-color: var(--text-secondary); box-shadow: 0 0 0 3px var(--focus); background: var(--input-focus); }
button {
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0 24px;
  color: var(--button-primary-text);
  background: var(--button-primary);
  font-weight: 650;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity .16s ease, transform .16s ease, background .16s ease;
}
button:hover { background: var(--button-primary-hover); }
button:active { transform: scale(.98); }
button:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.input-error, .form-error { min-height: 18px; margin: 7px 2px 0; color: var(--danger); font-size: 13px; }

.modal {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(16px + env(safe-area-inset-top)) calc(16px + env(safe-area-inset-right)) calc(16px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left));
  visibility: hidden;
  pointer-events: none;
}
.modal.open { visibility: visible; pointer-events: auto; }
.modal-backdrop { position: absolute; inset: 0; background: transparent; backdrop-filter: blur(0); -webkit-backdrop-filter: blur(0); transition: background .2s ease, backdrop-filter .2s ease; }
.modal.open .modal-backdrop { background: var(--overlay); backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px); }
.modal-panel {
  position: relative;
  z-index: 1;
  width: min(100%,420px);
  padding: 26px;
  text-align: center;
  color: var(--text-primary);
  background: var(--modal);
  border: 1px solid var(--border);
  border-radius: 26px;
  box-shadow: 0 24px 80px var(--shadow);
  backdrop-filter: blur(28px) saturate(130%);
  -webkit-backdrop-filter: blur(28px) saturate(130%);
  opacity: 0;
  transform: scale(.94) translateY(8px);
  transition: opacity .2s ease, transform .2s ease, background-color .18s ease;
}
.modal.open .modal-panel { opacity: 1; transform: scale(1) translateY(0); }
.icon-close {
  position: absolute;
  top: 13px;
  right: 13px;
  width: 44px;
  min-height: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0 0 3px;
  border: 0;
  border-radius: 50%;
  color: var(--close-text);
  background: var(--close-bg);
  font-size: 27px;
  font-weight: 400;
  line-height: 1;
}
.icon-close:hover { color: var(--text-primary); background: var(--close-hover); }
.status-icon { width: 58px; height: 58px; display: grid; place-items: center; margin: 1px auto 11px; border: 1px solid var(--border); border-radius: 50%; color: var(--text-primary); background: var(--input); font-size: 30px; font-weight: 600; line-height: 1; }
.status-icon.missing, .status-icon.error { color: var(--danger); border-color: var(--danger-border); background: var(--danger-soft); }
.status-icon.missing { font-size: 38px; }
.status-icon.registered, .status-icon.success { color: var(--success); border-color: var(--success-border); background: var(--success-soft); box-shadow: 0 0 22px rgba(52,199,89,.08); }
h2 { margin: 0; font-size: 30px; font-weight: 760; letter-spacing: -.025em; }
.modal-panel.registered h2, .modal-panel.success h2 { color: var(--success); }
.modal-panel.missing-result h2, .modal-panel.missing-form h2 { color: var(--danger-title); }
.modal-message { margin: 5px 0 16px; color: var(--text-secondary); line-height: 1.5; }
.primary-button { width: 100%; }
.result-actions { display: grid; grid-template-columns: 1fr; gap: 10px; }
.form-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.neutral-button { color: var(--neutral-text); background: var(--neutral); border-color: var(--border-soft); }
.neutral-button:hover { background: var(--neutral-hover); }
.outline-alert-button { color: var(--danger); background: transparent; border-color: var(--danger-border); }
.outline-alert-button:hover { color: var(--danger); background: var(--danger-soft); }
.confirm-button { color: #fff; background: var(--danger); border-color: var(--danger); }
.confirm-button:hover { background: var(--danger); filter: brightness(.9); }
.submit-form { margin-top: 18px; text-align: left; }
.form-actions { margin-top: 5px; }
.hidden { display: none !important; }
body.modal-open { overflow: hidden; }

@media (max-width: 520px) {
  body { padding: calc(12px + env(safe-area-inset-top)) calc(16px + env(safe-area-inset-right)) calc(14px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left)); }
  .theme-control { top: calc(16px + env(safe-area-inset-top)); right: calc(16px + env(safe-area-inset-right)); }
  .card { padding: 23px 20px 20px; border-radius: 24px; }
  header { margin-bottom: 19px; }
  .search-row button { width: 100%; }
  .modal-panel { width: min(calc(100vw - 32px - env(safe-area-inset-left) - env(safe-area-inset-right)),420px); padding: 27px 22px 22px; border-radius: 24px; }
  .icon-close { top: 11px; right: 11px; width: 46px; min-height: 46px; height: 46px; font-size: 28px; }
}
@media (max-height: 600px) {
  body, .modal { overflow-y: auto; }
}
@media (prefers-reduced-motion: reduce) { *,*::before,*::after { scroll-behavior: auto !important; transition-duration: .01ms !important; } }