:root {
  --bg1: #e6ddd0;
  --bg2: #c8b59c;
  --ink: #1f1a16;
  --card: #f8f1e6;
  --accent: #8a5a2f;
  --accent-2: #314f5b;
  --danger: #8f2f2f;
  --ok: #1e5f3b;
  --shadow: rgba(26, 20, 16, 0.24);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--ink);
  background: linear-gradient(140deg, var(--bg1), var(--bg2));
  min-height: 100vh;
}

.bg-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.4), transparent 45%),
    radial-gradient(circle at 80% 10%, rgba(70, 50, 30, 0.17), transparent 40%),
    repeating-linear-gradient(
      90deg,
      rgba(60, 45, 30, 0.035) 0,
      rgba(60, 45, 30, 0.035) 1px,
      transparent 1px,
      transparent 26px
    );
}

.page-wrap {
  position: relative;
  z-index: 1;
  width: min(1080px, 92vw);
  margin: 0 auto;
  padding: 2.2rem 0 3rem;
}

.page-wrap.slim {
  width: min(760px, 92vw);
}

.hero {
  margin-bottom: 1rem;
}

.eyebrow {
  letter-spacing: 0.2em;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-2);
  margin: 0;
}

h1 {
  margin: 0.3rem 0 0.2rem;
  font-size: clamp(1.7rem, 3.8vw, 2.8rem);
}

.subtitle {
  margin: 0;
  opacity: 0.86;
}

.panel {
  background: linear-gradient(180deg, rgba(248, 241, 230, 0.95), rgba(248, 241, 230, 0.9));
  border: 1px solid rgba(92, 68, 50, 0.25);
  border-radius: 18px;
  box-shadow: 0 14px 24px var(--shadow);
  padding: 1rem;
  margin-top: 1rem;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
}

h2 {
  margin: 0;
  font-size: 1.1rem;
}

.note-form {
  display: grid;
  gap: 0.75rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.95rem;
}

textarea,
input {
  width: 100%;
  border: 1px solid rgba(80, 60, 45, 0.25);
  border-radius: 12px;
  padding: 0.74rem 0.86rem;
  font: inherit;
  background: rgba(255, 255, 255, 0.8);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

button,
.decode-btn,
.ghost-btn {
  border: 0;
  border-radius: 12px;
  padding: 0.68rem 1rem;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
}

button,
.decode-btn {
  background: linear-gradient(130deg, var(--accent), #a37240);
  color: #fff;
}

.ghost-btn {
  background: rgba(49, 79, 91, 0.11);
  color: var(--accent-2);
  border: 1px solid rgba(49, 79, 91, 0.3);
}

.ghost-btn.link {
  display: inline-block;
}

.help {
  margin: 0.5rem 0 0.8rem;
  opacity: 0.8;
}

.note-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.8rem;
}

.note-card {
  border: 1px solid rgba(95, 68, 47, 0.28);
  border-radius: 14px;
  background: rgba(255, 251, 242, 0.86);
  padding: 0.8rem;
  display: grid;
  gap: 0.52rem;
  animation: riseIn 340ms ease both;
}

.note-meta {
  margin: 0;
  font-size: 0.78rem;
  opacity: 0.78;
}

.cipher {
  margin: 0;
  font-family: "Consolas", "Courier New", monospace;
  font-size: 0.86rem;
  background: rgba(44, 33, 24, 0.07);
  border-radius: 10px;
  padding: 0.55rem;
  word-break: break-all;
}

.hint {
  margin: 0;
  font-size: 0.86rem;
  opacity: 0.85;
}

.banner,
.error-box,
.status {
  border-radius: 12px;
  padding: 0.6rem 0.75rem;
  margin-top: 0.7rem;
}

.banner {
  background: rgba(49, 79, 91, 0.12);
  border: 1px solid rgba(49, 79, 91, 0.32);
}

.error-box {
  background: rgba(143, 47, 47, 0.13);
  border: 1px solid rgba(143, 47, 47, 0.36);
  color: var(--danger);
  font-weight: 700;
}

.status {
  min-height: 2.1rem;
  margin: 0.5rem 0 0;
  background: rgba(30, 95, 59, 0.1);
  border: 1px solid rgba(30, 95, 59, 0.22);
}

.note-meta-box {
  border: 1px solid rgba(95, 68, 47, 0.25);
  border-radius: 12px;
  background: rgba(255, 251, 242, 0.86);
  padding: 0.75rem;
  margin-bottom: 0.8rem;
}

.result-card {
  border: 1px solid rgba(30, 95, 59, 0.35);
  border-radius: 12px;
  background: rgba(30, 95, 59, 0.09);
  padding: 0.75rem;
}

.result-card h3 {
  margin: 0 0 0.4rem;
}

.result-card p {
  margin: 0;
  white-space: pre-wrap;
  line-height: 1.5;
}

.empty {
  margin: 0;
  opacity: 0.78;
  grid-column: 1 / -1;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(7px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 680px) {
  .page-wrap {
    padding-top: 1.35rem;
  }

  .panel {
    padding: 0.85rem;
  }

  .panel-head {
    flex-direction: column;
    align-items: flex-start;
  }
}