/* QToolFinCalc — Dark neon theme. Rebranded from QTool. */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a24;
  --bg-input: #22222e;
  --text-primary: #f0f0f5;
  --text-secondary: #8a8a9a;
  --text-muted: #5a5a6a;
  --accent-cyan: #00d4ff;
  --accent-magenta: #ff00aa;
  --accent-yellow: #ffd000;
  --accent-green: #00ff88;
  --accent-orange: #ff6b35;
  --gradient-1: linear-gradient(135deg, #00d4ff 0%, #ff00aa 100%);
  --gradient-2: linear-gradient(135deg, #ff6b35 0%, #ffd000 100%);
  --gradient-3: linear-gradient(135deg, #00ff88 0%, #00d4ff 100%);
  --border-color: #2a2a3a;
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Outfit', -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}
.bg-pattern { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.bg-pattern::before {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(0,212,255,.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255,0,170,.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(255,208,0,.03) 0%, transparent 70%);
  animation: bgFloat 20s ease-in-out infinite;
}
@keyframes bgFloat { 0%,100%{transform:translate(0,0) rotate(0)} 33%{transform:translate(2%,2%) rotate(1deg)} 66%{transform:translate(-1%,1%) rotate(-1deg)} }

/* header */
header { position: relative; z-index: 10; padding: 60px 20px 8px; text-align: center; }
h1 { font-size: 2rem; font-weight: 700; background: var(--gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.tagline { color: var(--text-secondary); font-size: 1rem; font-weight: 300; max-width: 720px; margin: 8px auto 0; }

main { position: relative; z-index: 10; max-width: 1000px; margin: 0 auto; padding: 20px 20px 60px; }

/* card */
.card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 32px; margin-bottom: 24px; box-shadow: var(--shadow-glow); }
.card-header { display: flex; align-items: center; gap: 16px; margin-bottom: 26px; }
.card-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 28px; flex-shrink: 0; }
.card-icon.cyan { background: linear-gradient(135deg, rgba(0,212,255,.2), rgba(0,212,255,.05)); border: 1px solid rgba(0,212,255,.3); }
.card-icon.magenta { background: linear-gradient(135deg, rgba(255,0,170,.2), rgba(255,0,170,.05)); border: 1px solid rgba(255,0,170,.3); }
.card-icon.yellow { background: linear-gradient(135deg, rgba(255,208,0,.2), rgba(255,208,0,.05)); border: 1px solid rgba(255,208,0,.3); }
.card-icon.green { background: linear-gradient(135deg, rgba(0,255,136,.2), rgba(0,255,136,.05)); border: 1px solid rgba(0,255,136,.3); }
.card-icon.orange { background: linear-gradient(135deg, rgba(255,107,53,.2), rgba(255,107,53,.05)); border: 1px solid rgba(255,107,53,.3); }
.card-title { font-size: 1.5rem; font-weight: 600; }
.card-desc { color: var(--text-secondary); font-size: .9rem; }

/* form */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 28px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: .78rem; font-weight: 500; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .5px; }
input, select {
  padding: 14px 18px; background: var(--bg-input); border: 1px solid var(--border-color);
  border-radius: var(--radius-sm); color: var(--text-primary); font-family: 'JetBrains Mono', monospace; font-size: 1rem; transition: all .3s;
}
input:focus, select:focus { outline: none; border-color: var(--accent-cyan); box-shadow: 0 0 0 3px rgba(0,212,255,.15); }
input::placeholder { color: var(--text-muted); }

/* buttons */
.btn { padding: 16px 32px; border: none; border-radius: var(--radius-sm); font-family: 'Outfit', sans-serif; font-size: 1rem; font-weight: 600; cursor: pointer; transition: all .3s; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 24px; }
.btn-primary { background: var(--gradient-1); color: var(--bg-primary); box-shadow: 0 4px 20px rgba(0,212,255,.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,212,255,.4); }
.btn-secondary { background: var(--bg-input); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { border-color: var(--accent-cyan); }
.btns { display: flex; flex-wrap: wrap; gap: 12px; }

/* results */
.results-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 28px; }
.result-item { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-sm); padding: 20px; text-align: center; transition: all .3s; }
.result-item:hover { border-color: var(--accent-cyan); transform: translateY(-2px); }
.result-label { font-size: .8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 8px; }
.result-value { font-family: 'JetBrains Mono', monospace; font-size: 1.5rem; font-weight: 600; }
.result-value.cyan { color: var(--accent-cyan); } .result-value.magenta { color: var(--accent-magenta); }
.result-value.yellow { color: var(--accent-yellow); } .result-value.green { color: var(--accent-green); }
.result-value.orange { color: var(--accent-orange); }

/* chart + table */
.chart-container { position: relative; height: 300px; margin-top: 20px; padding: 20px; background: var(--bg-secondary); border-radius: var(--radius-sm); border: 1px solid var(--border-color); }
.table-container { overflow-x: auto; margin-top: 20px; border-radius: var(--radius-sm); border: 1px solid var(--border-color); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { background: var(--bg-secondary); padding: 14px 16px; text-align: left; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; font-size: .75rem; letter-spacing: .5px; }
td { padding: 12px 16px; border-top: 1px solid var(--border-color); font-family: 'JetBrains Mono', monospace; font-size: .85rem; }
tr:hover td { background: var(--bg-secondary); }

/* faq */
.faq { margin-top: 28px; }
.faq h2 { font-size: 1.2rem; font-weight: 600; margin-bottom: 14px; }
.faq-item { border-bottom: 1px solid var(--border-color); }
.faq-q { width: 100%; text-align: left; display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 15px 0; font-size: .95rem; font-weight: 500; cursor: pointer; background: none; border: 0; color: var(--text-primary); font-family: 'Outfit', sans-serif; }
.faq-q svg { transition: transform .2s; color: var(--text-muted); flex-shrink: 0; }
.faq-item.open .faq-q svg { transform: rotate(180deg); }
.faq-a { display: none; padding: 0 0 16px; font-size: .9rem; line-height: 1.65; color: var(--text-secondary); }
.faq-item.open .faq-a { display: block; }

.note-line { color: var(--text-muted); font-size: .85rem; margin-top: 14px; line-height: 1.6; }
.disclaimer { color: var(--text-muted); font-size: .82rem; line-height: 1.6; margin-top: 26px; border-top: 1px solid var(--border-color); padding-top: 18px; }

.hidden { display: none !important; }
.mt-4 { margin-top: 24px; }

/* result highlight */
.result-highlight { background: linear-gradient(135deg, #00d4ff, #ff00aa); border-radius: var(--radius-sm); padding: 24px; margin-bottom: 20px; text-align: center; color: #0a0a0f; }
.result-highlight .hl-label{font-size:.85rem;text-transform:uppercase;letter-spacing:1px;opacity:.85}
.result-highlight .hl-value{font-family:'JetBrains Mono',monospace;font-size:2.2rem;font-weight:700;margin:8px 0}
.result-highlight .hl-sub{font-size:.9rem;opacity:.8}

@media (max-width: 768px) {
  h1 { font-size: 1.7rem; }
  .card { padding: 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .result-value { font-size: 1.2rem; }
}
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }