/* =============================================
   WEATHER STATION — Main Stylesheet
   Theme: Scientific notebook / field journal
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Source+Code+Pro:wght@400;600&family=Raleway:wght@300;400;600;700&display=swap');

:root {
  --bg:          #f5f2ec;
  --surface:     #fffdf8;
  --border:      #c8b89a;
  --accent:      #2e5f8a;
  --accent2:     #5a8a4a;
  --warn:        #b85a2e;
  --text:        #2a2520;
  --muted:       #7a6e62;
  --radius:      4px;
  --shadow:      0 2px 12px rgba(42,37,32,0.10);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Raleway', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  min-height: 100vh;
}

/* ---- PASSWORD GATE ---- */
#auth-overlay {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
}
#auth-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 3rem;
  max-width: 380px; width: 90%;
  text-align: center;
  box-shadow: var(--shadow);
}
#auth-box h2 {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: 1.4rem;
  margin-bottom: 0.4rem;
  color: var(--accent);
}
#auth-box p { color: var(--muted); font-size: 0.9rem; margin-bottom: 1.5rem; }
#auth-box input {
  width: 100%; padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: 'Source Code Pro', monospace; font-size: 1rem;
  background: var(--bg); color: var(--text);
  margin-bottom: 1rem;
}
#auth-box input:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
#auth-box button {
  width: 100%; padding: 0.7rem;
  background: var(--accent); color: #fff;
  border: none; border-radius: var(--radius);
  font-family: 'Raleway', sans-serif; font-size: 1rem; font-weight: 600;
  cursor: pointer; transition: background 0.2s;
}
#auth-box button:hover { background: #1e4060; }
#auth-error { color: var(--warn); font-size: 0.85rem; margin-top: 0.75rem; display: none; }

/* ---- LAYOUT ---- */
header {
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  padding: 1.2rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 0.75rem;
}
.site-title {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: 1.5rem;
  color: var(--accent);
  text-decoration: none;
}
.site-title span { color: var(--accent2); }
.stage-badge {
  font-family: 'Source Code Pro', monospace;
  font-size: 0.78rem;
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  border: 1.5px solid var(--accent2);
  color: var(--accent2);
  letter-spacing: 0.05em;
}
.stage-badge.digital { border-color: var(--accent); color: var(--accent); }

nav { display: flex; flex-wrap: wrap; gap: 0.2rem; }
nav a {
  font-size: 0.88rem; font-weight: 600;
  color: var(--muted); text-decoration: none;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
  letter-spacing: 0.02em;
}
nav a:hover, nav a.active { background: var(--accent); color: #fff; }

main {
  max-width: 1100px;
  margin: 2.5rem auto;
  padding: 0 1.5rem;
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--muted);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  font-family: 'Source Code Pro', monospace;
}

/* ---- TYPOGRAPHY ---- */
h1, h2, h3, h4 { font-family: 'Libre Baskerville', Georgia, serif; line-height: 1.3; }
h1 { font-size: 2rem; color: var(--accent); margin-bottom: 0.5rem; }
h2 { font-size: 1.4rem; color: var(--text); margin: 2rem 0 0.75rem; }
h3 { font-size: 1.1rem; color: var(--accent2); margin: 1.5rem 0 0.5rem; }
p { margin-bottom: 1rem; }
.lead { font-size: 1.05rem; color: var(--muted); margin-bottom: 1.5rem; }

/* ---- CARDS ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}
.card .label {
  font-family: 'Source Code Pro', monospace;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}
.card .value {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: 2rem;
  color: var(--accent);
  font-weight: 700;
}
.card .unit { font-size: 0.9rem; color: var(--muted); margin-left: 0.25rem; }
.card .time { font-family: 'Source Code Pro', monospace; font-size: 0.75rem; color: var(--muted); margin-top: 0.25rem; }

/* ---- INSTRUMENT SECTIONS ---- */
.instrument {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}
@media (max-width: 700px) { .instrument { grid-template-columns: 1fr; } }
.photo-placeholder {
  background: var(--bg);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  min-height: 200px;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted);
  font-family: 'Source Code Pro', monospace;
  font-size: 0.8rem;
  text-align: center;
  padding: 1rem;
}

/* ---- DATA TABLE ---- */
.data-table-wrap { overflow-x: auto; margin: 1.5rem 0; }
table { width: 100%; border-collapse: collapse; font-family: 'Source Code Pro', monospace; font-size: 0.85rem; }
th { background: var(--accent); color: #fff; padding: 0.6rem 0.9rem; text-align: left; font-weight: 600; letter-spacing: 0.04em; }
td { padding: 0.5rem 0.9rem; border-bottom: 1px solid var(--border); color: var(--text); }
tr:nth-child(even) td { background: var(--bg); }
tr:hover td { background: #eef3f8; }

/* ---- CHART AREA ---- */
.chart-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}
.chart-wrap h3 { margin-top: 0; }

/* ---- GALLERY ---- */
.gallery-filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }
.filter-btn {
  padding: 0.35rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: 'Raleway', sans-serif; font-size: 0.85rem; font-weight: 600;
  transition: all 0.15s;
}
.filter-btn:hover, .filter-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}
.gallery-item {
  position: relative; overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  aspect-ratio: 4/3;
  cursor: pointer;
  background: var(--bg);
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.gallery-item:hover img { transform: scale(1.04); }
.gallery-item .photo-placeholder { width: 100%; height: 100%; min-height: unset; }
.gallery-caption {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: rgba(42,37,32,0.78);
  color: #fff; padding: 0.4rem 0.6rem;
  font-size: 0.75rem;
  transform: translateY(100%);
  transition: transform 0.2s;
}
.gallery-item:hover .gallery-caption { transform: translateY(0); }

/* ---- LIGHTBOX ---- */
#lightbox {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.88);
  z-index: 8888;
  align-items: center; justify-content: center;
  flex-direction: column;
}
#lightbox.open { display: flex; }
#lightbox img { max-width: 90vw; max-height: 80vh; border-radius: var(--radius); }
#lightbox-caption { color: #fff; margin-top: 1rem; font-size: 0.9rem; }
#lightbox-close {
  position: absolute; top: 1.5rem; right: 2rem;
  color: #fff; font-size: 2rem; cursor: pointer;
  background: none; border: none; line-height: 1;
}

/* ---- NOTICES ---- */
.notice {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  border-left: 4px solid var(--accent);
  background: #e8eff7;
  color: var(--text);
}
.notice.coming-soon { border-color: var(--muted); background: #f0ece6; color: var(--muted); }
.notice.archive { border-color: var(--accent2); background: #eaf3e8; }

/* ---- ABOUT PAGE ---- */
.about-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 600px) {
  header { flex-direction: column; align-items: flex-start; }
  h1 { font-size: 1.5rem; }
  .card .value { font-size: 1.5rem; }
}