:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #687386;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --line: rgba(23, 32, 51, 0.14);
  --green: #24745a;
  --green-dark: #164c3b;
  --coral: #d56a50;
  --gold: #edbd44;
  --blue: #426fb2;
  --shadow: 0 24px 70px rgba(23, 32, 51, 0.18);
  --card-ink: #eaf7ff;
  --card-name: #b8ff8a;
  --card-meta: #8ea6b8;
  --card-border: rgba(134, 255, 122, 0.38);
  --card-border-hover: rgba(140, 255, 122, 0.75);
  --card-glow: rgba(104, 255, 93, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  font-family:
    "Pretendard",
    "Noto Sans KR",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: url("/images/background.png") center / cover no-repeat fixed;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.72;
}

input,
textarea {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid rgba(23, 32, 51, 0.16);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
  outline: none;
}

textarea {
  padding-top: 12px;
  padding-bottom: 12px;
  line-height: 1.55;
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(36, 116, 90, 0.16);
}

.password-mask {
  -webkit-text-security: disc;
  text-security: disc;
}

.stage {
  position: relative;
  display: grid;
  min-height: 100vh;
  overflow: hidden;
  place-items: center;
  padding: 88px 18px 260px;
}

.stage-pattern {
  position: absolute;
  inset: 0;
  display: none;
  opacity: 0.34;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 84%, transparent);
}

.floating-wall {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}

.floating-post {
  position: absolute;
  top: var(--top);
  right: var(--start-right, -46vw);
  z-index: var(--depth);
  display: inline-flex;
  max-width: min(440px, 82vw);
  align-items: center;
  gap: 10px;
  padding: 11px 15px;
  border: 1px solid var(--card-border);
  border-radius: 14px;
  color: var(--card-ink);
  background:
    linear-gradient(145deg, rgba(10, 24, 42, 0.82), rgba(4, 10, 20, 0.72)),
    rgba(8, 18, 32, 0.78);
  box-shadow:
    0 0 18px rgba(104, 255, 93, 0.12),
    inset 0 0 18px rgba(104, 255, 93, 0.04);
  backdrop-filter: blur(12px);
  animation: move-left var(--duration) linear infinite;
  animation-delay: var(--delay);
  pointer-events: auto;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    opacity 0.28s ease,
    translate 0.2s ease;
}

.floating-post:hover {
  border-color: var(--card-border-hover);
  box-shadow:
    0 0 24px rgba(104, 255, 93, 0.28),
    0 8px 28px rgba(0, 0, 0, 0.35),
    inset 0 0 18px rgba(104, 255, 93, 0.05);
  translate: 0 -3px;
}

.floating-post strong {
  flex: 0 0 auto;
  color: var(--card-name);
  font-size: 0.9rem;
  font-weight: 900;
}

.floating-post span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--card-ink);
}

@keyframes move-left {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(calc(-160vw - 720px));
  }
}

.top-action {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 10;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(134, 255, 122, 0.34);
  border-radius: 8px;
  color: #eaf7ff;
  background:
    linear-gradient(145deg, rgba(12, 24, 38, 0.72), rgba(5, 10, 18, 0.58)),
    rgba(8, 18, 32, 0.58);
  box-shadow:
    0 0 16px rgba(104, 255, 93, 0.1),
    0 10px 28px rgba(0, 0, 0, 0.28),
    inset 0 0 14px rgba(104, 255, 93, 0.04);
  backdrop-filter: blur(10px);
  font-weight: 800;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    transform 0.2s ease;
}

.top-action:hover {
  border-color: rgba(140, 255, 122, 0.68);
  background:
    linear-gradient(145deg, rgba(18, 38, 34, 0.76), rgba(6, 14, 22, 0.62)),
    rgba(8, 18, 32, 0.64);
  box-shadow:
    0 0 22px rgba(104, 255, 93, 0.22),
    0 12px 32px rgba(0, 0, 0, 0.34),
    inset 0 0 16px rgba(104, 255, 93, 0.06);
  transform: translateY(-1px);
}

.hero-title {
  position: fixed;
  bottom: clamp(150px, 24vh, 280px);
  left: 50%;
  z-index: 5;
  width: min(1120px, calc(100vw - 36px));
  color: var(--ink);
  text-align: center;
  transform: translateX(-50%);
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
}

.hero-title h1 {
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.38),
    0 0 8px rgba(234, 247, 255, 0.28),
    0 0 15px rgba(104, 255, 93, 0.1);
}

.composer-panel {
  position: fixed;
  right: auto;
  bottom: max(18px, env(safe-area-inset-bottom));
  left: 50%;
  z-index: 9;
  width: min(760px, calc(100vw - 32px));
  max-height: calc(100vh - 112px);
  padding: 34px;
  border: 1px solid rgba(232, 238, 246, 0.36);
  border-radius: 14px;
  color: #f3f7fb;
  background:
    linear-gradient(145deg, rgba(210, 218, 228, 0.10), rgba(80, 92, 108, 0.05)),
    rgba(148, 158, 172, 0.04);
  box-shadow:
    0 18px 54px rgba(0, 0, 0, 0.36),
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 0 24px rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
  transition:
    transform 260ms ease,
    border-color 260ms ease,
    box-shadow 260ms ease;
}

.composer-panel.is-collapsed {
  box-shadow:
    0 16px 42px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    inset 0 0 18px rgba(255, 255, 255, 0.05);
  transform: translate(-50%, calc(100% - 76px));
}

.composer-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.composer-toggle {
  display: inline-flex;
  min-width: 96px;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  border: 1px solid rgba(232, 238, 246, 0.36);
  border-radius: 8px;
  color: #f3f7fb;
  background: rgba(18, 25, 34, 0.58);
  box-shadow: inset 0 0 14px rgba(255, 255, 255, 0.04);
  font-weight: 900;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

.composer-toggle:hover {
  border-color: rgba(255, 255, 255, 0.62);
  background: rgba(28, 38, 50, 0.7);
  box-shadow:
    0 8px 22px rgba(0, 0, 0, 0.24),
    inset 0 0 16px rgba(255, 255, 255, 0.06);
}

.toggle-icon {
  width: 10px;
  height: 10px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 220ms ease;
}

.composer-panel.is-collapsed .toggle-icon {
  transform: translateY(2px) rotate(225deg);
}

.composer-panel.is-collapsed .post-form {
  opacity: 0;
  pointer-events: none;
}

.post-form {
  display: grid;
  gap: 16px;
  margin-top: 24px;
  max-height: calc(100vh - 230px);
  overflow-y: auto;
  transition: opacity 180ms ease;
}

.kicker {
  margin: 0 0 8px;
  color: var(--card-name);
  font-size: 0.82rem;
  font-weight: 900;
}

.composer-panel .kicker {
  color: rgba(243, 247, 251, 0.82);
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: none;
  font-size: clamp(2.4rem, 7.2vw, 5rem);
  line-height: 0.98;
  white-space: nowrap;
  word-break: keep-all;
}

h2 {
  color: var(--card-ink);
  font-size: 1.55rem;
}

.composer-panel h2 {
  color: rgba(243, 247, 251, 0.72);
  font-size: 1.32rem;
  font-weight: 700;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.22);
}

.identity-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field {
  display: grid;
  gap: 8px;
  color: var(--card-meta);
  font-size: 0.88rem;
  font-weight: 800;
}

.composer-panel .field {
  color: rgba(243, 247, 251, 0.84);
}

.composer-panel input {
  border-color: rgba(255, 255, 255, 0.32);
  color: #ffffff;
  background: rgba(8, 13, 20, 0.64);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 0 14px rgba(0, 0, 0, 0.16);
}

.composer-panel input::placeholder {
  color: rgba(218, 228, 238, 0.7);
}

.composer-panel input:focus {
  border-color: rgba(255, 255, 255, 0.72);
  box-shadow:
    0 0 0 3px rgba(234, 247, 255, 0.14),
    0 0 18px rgba(234, 247, 255, 0.16),
    inset 0 0 14px rgba(0, 0, 0, 0.16);
}

.message-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.submit-button,
.edit-button,
.delete-button {
  min-height: 48px;
  padding: 0 18px;
  border-radius: 8px;
  color: #05111a;
  background: linear-gradient(135deg, #b8ff8a, #6eff7b);
  box-shadow:
    0 0 18px rgba(104, 255, 93, 0.22),
    inset 0 -1px 0 rgba(0, 0, 0, 0.24);
  font-weight: 800;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    filter 0.2s ease;
}

.submit-button:hover,
.edit-button:hover {
  box-shadow:
    0 0 24px rgba(104, 255, 93, 0.34),
    0 8px 22px rgba(0, 0, 0, 0.26);
  filter: brightness(1.04);
  transform: translateY(-1px);
}

.delete-button {
  color: #ffece8;
  background: linear-gradient(135deg, #d56a50, #8f2e34);
  box-shadow: 0 0 14px rgba(213, 106, 80, 0.22);
}

.form-status {
  min-height: 20px;
  margin: 0;
  color: var(--card-name);
  font-size: 0.9rem;
  font-weight: 800;
}

.form-status.is-error {
  color: #ffb4a6;
}

.post-dialog {
  width: min(900px, calc(100vw - 28px));
  height: min(760px, calc(100vh - 28px));
  max-height: min(760px, calc(100vh - 28px));
  padding: 0;
  border: 1px solid rgba(134, 255, 122, 0.34);
  border-radius: 14px;
  color: var(--card-ink);
  background:
    linear-gradient(145deg, rgba(10, 24, 42, 0.88), rgba(4, 10, 20, 0.82)),
    rgba(8, 18, 32, 0.86);
  box-shadow:
    0 0 26px rgba(104, 255, 93, 0.14),
    0 24px 72px rgba(0, 0, 0, 0.46),
    inset 0 0 24px rgba(104, 255, 93, 0.04);
  backdrop-filter: blur(16px);
  grid-template-rows: auto 1fr;
}

.post-dialog::backdrop {
  background: rgba(2, 6, 14, 0.64);
  backdrop-filter: blur(6px);
}

.post-dialog[open] {
  display: grid;
}

.dialog-header {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px;
  border-bottom: 1px solid rgba(134, 255, 122, 0.22);
  background:
    linear-gradient(145deg, rgba(13, 31, 48, 0.82), rgba(5, 12, 22, 0.76)),
    rgba(8, 18, 32, 0.82);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(14px);
}

.close-button {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  border: 1px solid rgba(232, 238, 246, 0.22);
  color: var(--card-ink);
  background: rgba(13, 31, 48, 0.72);
  font-size: 1.45rem;
  line-height: 1;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

.close-button:hover {
  border-color: rgba(140, 255, 122, 0.58);
  background: rgba(18, 38, 34, 0.82);
  box-shadow: 0 0 18px rgba(104, 255, 93, 0.18);
}

.post-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-content: start;
  gap: 14px;
  padding: 20px 24px 24px;
  overflow: auto;
  background: rgba(2, 6, 14, 0.12);
}

.post-list.is-detail {
  grid-template-columns: 1fr;
  align-content: center;
  justify-items: center;
}

.post-row {
  display: grid;
  min-height: 190px;
  align-content: start;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--card-border);
  border-radius: 14px;
  color: var(--card-ink);
  text-align: left;
  background:
    linear-gradient(145deg, rgba(10, 24, 42, 0.82), rgba(4, 10, 20, 0.72)),
    rgba(8, 18, 32, 0.78);
  box-shadow:
    0 0 18px rgba(104, 255, 93, 0.12),
    inset 0 0 18px rgba(104, 255, 93, 0.04);
  backdrop-filter: blur(8px);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.post-row:hover {
  border-color: var(--card-border-hover);
  box-shadow:
    0 0 24px rgba(104, 255, 93, 0.28),
    0 8px 28px rgba(0, 0, 0, 0.35),
    inset 0 0 18px rgba(104, 255, 93, 0.05);
  transform: translateY(-3px);
}

.post-author {
  color: var(--card-name);
  font-weight: 900;
  word-break: break-word;
}

.post-content {
  margin: 0;
  color: var(--card-ink);
  line-height: 1.55;
  word-break: break-word;
}

.post-row .post-content {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 5;
}

.post-detail {
  display: grid;
  grid-column: 1 / -1;
  gap: 18px;
  width: min(620px, 100%);
  min-height: 420px;
  align-content: start;
  justify-self: center;
  padding: 20px;
  border: 1px solid var(--card-border-hover);
  border-radius: 14px;
  color: var(--card-ink);
  background:
    linear-gradient(145deg, rgba(10, 24, 42, 0.88), rgba(4, 10, 20, 0.78)),
    rgba(8, 18, 32, 0.84);
  box-shadow:
    0 0 28px rgba(104, 255, 93, 0.2),
    0 18px 46px rgba(0, 0, 0, 0.38),
    inset 0 0 18px rgba(104, 255, 93, 0.05);
}

.post-detail-body {
  display: grid;
  gap: 14px;
  min-height: 190px;
}

.post-detail .post-author {
  font-size: 1.08rem;
}

.post-detail .post-content {
  display: block;
  overflow: visible;
  min-height: 120px;
  font-size: 1rem;
}

.back-button {
  justify-self: start;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(232, 238, 246, 0.22);
  border-radius: 8px;
  color: var(--card-ink);
  background: rgba(13, 31, 48, 0.72);
  font-weight: 800;
}

.back-button:hover {
  border-color: rgba(140, 255, 122, 0.58);
  box-shadow: 0 0 16px rgba(104, 255, 93, 0.16);
}

.post-actions {
  display: grid;
  grid-template-columns: minmax(120px, 180px) 1fr auto auto;
  gap: 8px;
  align-items: center;
}

.post-actions input,
.post-actions textarea,
.post-actions button {
  min-height: 42px;
}

.post-actions input,
.post-actions textarea {
  border-color: rgba(134, 255, 122, 0.26);
  color: var(--card-ink);
  background: rgba(13, 31, 48, 0.72);
}

.post-actions input::placeholder,
.post-actions textarea::placeholder {
  color: var(--card-meta);
}

.post-detail .post-actions {
  grid-template-columns: minmax(180px, 1fr) auto auto;
}

.post-edit-form {
  display: grid;
  gap: 14px;
  min-height: 190px;
}

.post-edit-form .post-author {
  font-size: 1.08rem;
}

.post-edit-form .post-actions {
  grid-template-columns: auto;
  justify-content: end;
  align-items: center;
}

.post-edit .edit-content {
  min-height: 120px;
  padding: 16px;
  resize: none;

  background: linear-gradient(
          145deg,
          rgba(10, 24, 42, 0.88),
          rgba(4, 10, 20, 0.78)
  );
  color: #EAF7FF;
  border: 1px solid rgba(134, 255, 122, 0.38);
  border-radius: 12px;
  outline: none;

  box-shadow:
          inset 0 0 14px rgba(104, 255, 93, 0.05),
          0 0 12px rgba(104, 255, 93, 0.08);
}

.post-edit .edit-content::placeholder {
  color: rgba(142, 166, 184, 0.75);
}

.post-edit .edit-content:focus {
  border-color: rgba(140, 255, 122, 0.75);
  box-shadow:
          inset 0 0 14px rgba(104, 255, 93, 0.08),
          0 0 18px rgba(104, 255, 93, 0.22);
}

.empty-state {
  padding: 44px 16px;
  color: var(--card-meta);
  text-align: center;
}

@media (max-width: 720px) {
  .stage {
    padding: 86px 18px 230px;
  }

  .top-action {
    right: 14px;
  }

  .composer-panel {
    bottom: 0;
    width: 100%;
    max-height: calc(100vh - 76px);
    padding: 20px 18px;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 8px 8px 0 0;
  }

  .composer-panel.is-collapsed {
    transform: translate(-50%, calc(100% - 70px));
  }

  .composer-summary {
    gap: 12px;
  }

  .composer-toggle {
    min-width: 84px;
  }

  .hero-title {
    bottom: clamp(118px, 23vh, 190px);
  }

  h1 {
    font-size: clamp(1.85rem, 8vw, 3rem);
  }

  .post-form {
    max-height: calc(100vh - 220px);
  }

  .identity-row,
  .message-row,
  .post-actions {
    grid-template-columns: 1fr;
  }

  .post-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: clamp(1.55rem, 7.5vw, 2.1rem);
  }
}