/* SolarCalc — Solar Energy Calculators */
/* Theme: Dark solar / dawn sky — #080c02 bg, #fde047 accent */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #080c02;
  --card-bg:  #111700;
  --accent:   #fde047;
  --text:     #fefce8;
  --muted:    #a3a889;
  --input-bg: #1a2200;
  --result-bg:#050700;
  --border:   #2e3a00;
  --warn:     #f59e0b;
  --err:      #ef4444;
  --ok:       #4ade80;
  --radius:   6px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Header ── */
header {
  background: #0a1000;
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand { font-size: 1.4rem; font-weight: 700; color: var(--accent); letter-spacing: -0.5px; }
nav { display: flex; gap: 1rem; flex-wrap: wrap; }
nav a { color: var(--muted); font-size: 0.9rem; }
nav a:hover { color: var(--accent); text-decoration: none; }

/* ── Main layout ── */
main {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

h1 { font-size: 1.8rem; color: var(--accent); margin-bottom: 0.4rem; }
h2 { font-size: 1.25rem; color: var(--accent); margin-bottom: 1rem; }
h3 { font-size: 1rem; color: var(--muted); text-transform: uppercase;
     letter-spacing: 0.08em; margin: 1.5rem 0 0.5rem; }
p  { color: var(--muted); margin-bottom: 0.75rem; }

/* ── Cards ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

/* ── Form elements ── */
label {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
  margin-top: 1rem;
}
label:first-child { margin-top: 0; }

input[type="number"],
input[type="text"],
select {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s;
}
input:focus, select:focus { border-color: var(--accent); }
input[type="number"] { -moz-appearance: textfield; }
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 520px) { .input-row { grid-template-columns: 1fr; } }

/* ── Results ── */
.results {
  background: var(--result-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-top: 1.5rem;
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.result-row:last-child { border-bottom: none; }
.result-label { color: var(--muted); }
.result-value { color: var(--accent); font-weight: 600; font-size: 1.05rem; }
.result-value.ok  { color: var(--ok); }
.result-value.err { color: var(--err); }
.result-value.warn{ color: var(--warn); }

.result-main {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  padding: 0.5rem 0 0.75rem;
}

/* ── Status badges ── */
.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 99px;
  font-size: 0.8rem;
  font-weight: 600;
}
.badge-ok   { background: #052e16; color: var(--ok); }
.badge-err  { background: #3b0000; color: var(--err); }
.badge-warn { background: #3b2000; color: var(--warn); }

/* ── Tables ── */
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; margin-top: 0.75rem; }
th { background: #0d1800; color: var(--muted); padding: 0.4rem 0.75rem; text-align: left;
     border-bottom: 1px solid var(--border); }
td { padding: 0.35rem 0.75rem; border-bottom: 1px solid var(--border); }
tr.highlight td { background: #1a2600; color: var(--accent); font-weight: 600; }
tr:last-child td { border-bottom: none; }

/* ── Buttons ── */
button {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--radius);
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 1rem;
  transition: opacity 0.15s;
}
button:hover { opacity: 0.85; }
button.secondary {
  background: var(--input-bg);
  color: var(--accent);
  border: 1px solid var(--border);
}
button.danger {
  background: #3b0000;
  color: var(--err);
  border: 1px solid #5a0000;
  padding: 0.25rem 0.6rem;
  font-size: 0.8rem;
  margin-top: 0;
}

/* ── Tool grid (homepage) ── */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}
.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: border-color 0.15s;
  display: block;
  color: var(--text);
}
.tool-card:hover { border-color: var(--accent); text-decoration: none; }
.tool-card .icon { font-size: 2rem; margin-bottom: 0.5rem; }
.tool-card h2 { font-size: 1rem; color: var(--text); margin-bottom: 0.25rem; }
.tool-card p  { font-size: 0.85rem; color: var(--muted); margin: 0; }

/* ── Appliance list (off-grid) ── */
.appliance-row {
  display: grid;
  grid-template-columns: 1fr 80px 80px 80px 90px 36px;
  gap: 0.4rem;
  align-items: center;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}
.appliance-row.header { color: var(--muted); font-size: 0.8rem; }
@media (max-width: 640px) {
  .appliance-row {
    grid-template-columns: 1fr 70px 70px 60px 80px 30px;
    font-size: 0.8rem;
  }
}
.appliance-row input {
  padding: 0.3rem 0.4rem;
  font-size: 0.85rem;
}

/* ── Hint / note ── */
.hint {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.5rem;
  font-style: italic;
}

/* ── Share link ── */
.share-row { margin-top: 1rem; display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.share-row input {
  flex: 1;
  min-width: 200px;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  font-size: 0.82rem;
  color: var(--muted);
  text-align: center;
  margin-top: 4rem;
}

/* ── 25-yr table scroll ── */
.table-scroll { overflow-x: auto; }