@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;700&display=swap");

:root {
  color: #e9f2ff;
  background: #050b16;
  font-family: "Space Grotesk", "Noto Sans JP", "Hiragino Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --navy: #0a1830;
  --navy-deep: #050b16;
  --accent: #4ed0ff;
  --accent-2: #9acbff;
  --card: rgba(14, 28, 55, 0.7);
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.4);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(circle at 10% 20%, rgba(39, 73, 112, 0.3), transparent 30%), radial-gradient(circle at 90% 10%, rgba(55, 133, 172, 0.25), transparent 25%), linear-gradient(135deg, #050b16 0%, #0a1122 50%, #050b16 100%);
  overflow-x: hidden;
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 140px 140px;
  opacity: 0.4;
  mask-image: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 1), transparent 65%);
  animation: gridMove 18s linear infinite;
}

.lightning {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(120deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.24) 10%, transparent 18%),
    linear-gradient(132deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.28) 7%, transparent 16%),
    radial-gradient(circle at 40% 30%, rgba(255, 255, 255, 0.18), transparent 45%),
    radial-gradient(circle at 70% 20%, rgba(255, 255, 255, 0.14), transparent 40%);
  mix-blend-mode: screen;
  opacity: 0;
  filter: blur(0.5px) drop-shadow(0 0 12px rgba(255, 255, 255, 0.45));
  animation: lightningFlash 2.8s ease-in-out infinite;
}

.orb {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
}

.orb-1 {
  background: #0c4a7c;
  top: 8%;
  left: 16%;
  animation: float 14s ease-in-out infinite;
}

.orb-2 {
  background: #00c6ff;
  bottom: 12%;
  right: 10%;
  animation: float 18s ease-in-out infinite reverse;
}

.page {
  position: relative;
  z-index: 1;
  width: min(1040px, 100%);
  padding: 64px 24px 80px;
}

.header {
  text-align: center;
  margin: 0 auto 44px;
  max-width: 760px;
}

.profile {
  display: flex;
  justify-content: center;
  margin-bottom: 18px;
}

.profile-icon {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  padding: 6px;
  background: linear-gradient(160deg, rgba(78, 208, 255, 0.35), rgba(154, 203, 255, 0.2));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
}

.profile-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.12), transparent 45%);
}

.title {
  margin: 0;
  font-size: clamp(32px, 5vw, 52px);
  letter-spacing: 0.12em;
  color: #eaf5ff;
  filter: drop-shadow(0 18px 32px rgba(0, 0, 0, 0.35));
  animation: glowShift 9s ease-in-out infinite;
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .title {
    background: linear-gradient(120deg, #eaf5ff 0%, #9acbff 40%, #4ed0ff 80%, #eaf5ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }
}

.subtitle {
  margin: 14px auto 0;
  font-size: 15px;
  color: #c8ddff;
  letter-spacing: 0.08em;
  line-height: 1.7;
}

.links {
  margin: 32px auto 0;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.link-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 18px;
  text-decoration: none;
  color: #e9f2ff;
  background: linear-gradient(145deg, rgba(15, 32, 58, 0.9), rgba(9, 21, 43, 0.9));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease, background 240ms ease;
  overflow: hidden;
  opacity: 1;
  transform: none;
  animation: riseIn 0.65s ease forwards;
}

.links .link-card:nth-child(1) { animation-delay: 0.06s; }
.links .link-card:nth-child(2) { animation-delay: 0.12s; }
.links .link-card:nth-child(3) { animation-delay: 0.18s; }
.links .link-card:nth-child(4) { animation-delay: 0.24s; }
.links .link-card:nth-child(5) { animation-delay: 0.30s; }
.links .link-card:nth-child(6) { animation-delay: 0.36s; }

.link-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(78, 208, 255, 0.2), transparent 40%), radial-gradient(circle at 80% 10%, rgba(154, 203, 255, 0.15), transparent 45%);
  opacity: 0;
  transition: opacity 220ms ease;
}

.link-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: rgba(78, 208, 255, 0.5);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.45);
  background: linear-gradient(145deg, rgba(19, 45, 79, 0.95), rgba(11, 31, 63, 0.95));
}

.link-card:hover::after {
  opacity: 1;
}

.link-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  object-fit: cover;
  background: linear-gradient(135deg, rgba(78, 208, 255, 0.18), rgba(154, 203, 255, 0.08));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.link-label {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.message {
  margin-top: 24px;
  text-align: center;
  color: #a4b9d8;
  font-size: 14px;
  letter-spacing: 0.04em;
}

.admin-panel {
  margin: 40px auto 0;
  padding: 18px 18px 22px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(8, 19, 39, 0.7);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.admin-panel--hidden {
  display: none;
}

.admin-panel__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.admin-panel__title {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #e9f2ff;
}

.admin-panel__note {
  margin: 4px 0 0;
  font-size: 12px;
  color: #a4b9d8;
}

.admin-panel__toggle {
  align-self: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(14, 28, 55, 0.9);
  color: #e9f2ff;
  padding: 8px 14px;
  cursor: pointer;
  letter-spacing: 0.04em;
}

.admin-panel__toggle:hover {
  border-color: rgba(78, 208, 255, 0.6);
}

.admin-panel__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.admin-panel__body.is-hidden {
  display: none;
}

.admin-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.admin-label {
  font-size: 12px;
  color: #c8ddff;
  letter-spacing: 0.06em;
}

.admin-input {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(12, 26, 52, 0.7);
  color: #e9f2ff;
  padding: 10px 12px;
  font-size: 14px;
}

.admin-input:focus {
  outline: 1px solid rgba(78, 208, 255, 0.7);
}

.admin-links-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.admin-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.admin-link {
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(10, 22, 44, 0.8);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px 12px;
}

.admin-link__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.admin-link__icon-row {
  flex-direction: column;
}

.admin-link__upload input[type="file"] {
  padding: 8px 12px;
  background: rgba(12, 26, 52, 0.7);
  border-radius: 10px;
  border: 1px solid var(--border);
  color: #e9f2ff;
}

.admin-link__colors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.admin-link__color {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.admin-color {
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(12, 26, 52, 0.7);
}

.admin-link__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.admin-button {
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid rgba(78, 208, 255, 0.5);
  background: linear-gradient(120deg, rgba(78, 208, 255, 0.25), rgba(154, 203, 255, 0.18));
  color: #e9f2ff;
  cursor: pointer;
  letter-spacing: 0.03em;
}

.admin-button--ghost {
  background: rgba(12, 26, 52, 0.6);
  border-color: var(--border);
}

.admin-button:hover {
  filter: brightness(1.05);
}

.admin-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.animated-char {
  display: inline-block;
  opacity: 0;
  transform: translateY(18px);
  animation: floatUp 820ms ease forwards;
  will-change: transform, opacity;
}

@media (prefers-reduced-motion: reduce) {
  .animated-char {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .header,
  .title,
  .subtitle,
  .link-card {
    animation: none !important;
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 720px) {
  .links {
    gap: 20px;
  }

  .subtitle {
    font-size: 16px;
  }
}

@media (max-width: 520px) {
  .page {
    padding: 48px 16px 64px;
  }

  .title {
    letter-spacing: 0.08em;
  }

  .links {
  }
}

@keyframes floatUp {
  0% {
    opacity: 0;
    transform: translateY(18px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes glowShift {
  0% {
    filter: drop-shadow(0 12px 26px rgba(78, 208, 255, 0.2));
  }
  50% {
    filter: drop-shadow(0 14px 42px rgba(154, 203, 255, 0.35));
  }
  100% {
    filter: drop-shadow(0 12px 26px rgba(78, 208, 255, 0.2));
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-18px) scale(1.04);
  }
}

@keyframes gridMove {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(-80px, -80px, 0);
  }
}

@keyframes riseIn {
  0% {
    opacity: 0.4;
    transform: translateY(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes lightningFlash {
  0%,
  72% {
    opacity: 0;
  }
  74% {
    opacity: 0.9;
  }
  76% {
    opacity: 0.2;
  }
  78% {
    opacity: 0.8;
  }
  82%,
  100% {
    opacity: 0;
  }
}