/* ================================================
   TradingCalc — Design System
   Primary: #D97706 | Accent: #B45309 | Dark: #1C1917
   Fonts: DM Mono (accents) + Plus Jakarta Sans (body)
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --gold:         #D97706;
  --gold-light:   #F59E0B;
  --gold-bright:  #FCD34D;
  --gold-pale:    #FEF3C7;
  --gold-faint:   #FFFBEB;
  --dark:         #1C1917;
  --dark2:        #292524;
  --dark3:        #44403C;
  --text:         #1C1917;
  --muted:        #78716C;
  --border:       #E7E5E4;
  --white:        #FFFFFF;
  --green:        #16A34A;
  --red:          #DC2626;
  --shadow:       0 4px 24px rgba(217,119,6,0.12);
  --radius:       12px;
  --radius-sm:    8px;
  --mono:         'DM Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 16px;
  color: var(--text);
  background: #FAFAF9;
  line-height: 1.6;
}

/* HEADER */
header {
  background: var(--dark);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 3px solid var(--gold);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
}
.logo {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo span { color: var(--gold-light); }
nav { display: flex; align-items: center; gap: 6px; }
nav a {
  font-weight: 700;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
nav a:hover { background: rgba(217,119,6,0.15); color: var(--gold-light); }

/* HERO */
.hero {
  background: var(--dark);
  padding: 68px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -60px; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 300px;
  background: radial-gradient(ellipse, rgba(217,119,6,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(217,119,6,0.15);
  border: 1px solid rgba(217,119,6,0.3);
  color: var(--gold-bright);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  position: relative;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 16px;
  position: relative;
  letter-spacing: -0.5px;
}
.hero h1 em { font-style: normal; color: var(--gold-light); }
.hero p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.65);
  max-width: 560px;
  margin: 0 auto 32px;
  position: relative;
}

/* SEARCH */
.search-wrap { max-width: 500px; margin: 0 auto; position: relative; }
.search-wrap input {
  width: 100%;
  padding: 13px 50px 13px 18px;
  border-radius: 6px;
  border: 1px solid rgba(217,119,6,0.3);
  background: rgba(255,255,255,0.06);
  color: var(--white);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border 0.2s, background 0.2s;
}
.search-wrap input::placeholder { color: rgba(255,255,255,0.35); }
.search-wrap input:focus { border-color: var(--gold); background: rgba(255,255,255,0.09); }
.search-wrap svg {
  position: absolute;
  right: 16px; top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
  pointer-events: none;
}

/* SECTIONS */
.section { max-width: 1280px; margin: 0 auto; padding: 52px 24px; }
.section-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.3px;
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--gold-pale), transparent);
}

/* TOOL CARDS */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}
.tool-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 9px;
  position: relative;
  overflow: hidden;
}
.tool-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--gold), var(--gold-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}
.tool-card:hover { border-color: var(--gold); box-shadow: var(--shadow); transform: translateY(-2px); }
.tool-card:hover::after { transform: scaleX(1); }
.tool-icon {
  width: 40px; height: 40px;
  background: var(--gold-faint);
  border: 1px solid var(--gold-pale);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: background 0.2s;
}
.tool-card:hover .tool-icon { background: var(--gold-pale); }
.tool-card h3 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.2px;
}
.tool-card p { font-size: 0.81rem; color: var(--muted); line-height: 1.45; }
.tool-card .arrow {
  margin-top: auto;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
  opacity: 0;
  transition: opacity 0.2s;
}
.tool-card:hover .arrow { opacity: 1; }

/* CALCULATOR LAYOUT */
.calc-layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 36px 24px 60px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 28px;
  align-items: start;
}
@media (max-width: 840px) { .calc-layout { grid-template-columns: 1fr; } }

.calc-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 32px;
  box-shadow: var(--shadow);
}
.calc-card h1 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}
.calc-card .subtitle {
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

/* Form */
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--dark3);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-row input, .form-row select {
  width: 100%;
  padding: 10px 13px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.97rem;
  color: var(--text);
  background: var(--white);
  outline: none;
  transition: border 0.2s;
}
.form-row input:focus, .form-row select:focus { border-color: var(--gold); }

/* Mono number input */
.form-row input[type="number"] { font-family: var(--mono); }

.toggle-row { display: flex; gap: 6px; margin-bottom: 18px; }
.toggle-btn {
  flex: 1;
  padding: 8px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--white);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.18s;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.toggle-btn.active { background: var(--gold); border-color: var(--gold); color: var(--white); }

.calc-btn {
  width: 100%;
  padding: 13px;
  background: var(--gold);
  color: var(--white);
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.18s, transform 0.1s;
  margin-top: 6px;
}
.calc-btn:hover { background: var(--gold-light); transform: translateY(-1px); }
.calc-btn:active { transform: translateY(0); }

/* Result */
.result-box {
  display: none;
  margin-top: 24px;
  padding: 22px;
  background: var(--gold-faint);
  border: 1.5px solid var(--gold-pale);
  border-radius: var(--radius);
}
.result-box.show { display: block; animation: fadeUp 0.3s ease; }
@keyframes fadeUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }

.result-main {
  font-family: var(--mono);
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--dark);
  line-height: 1.1;
}
.result-main.positive { color: var(--green); }
.result-main.negative { color: var(--red); }

.result-label { font-size: 0.82rem; color: var(--gold); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.result-sub { font-size: 0.85rem; color: var(--muted); margin-top: 6px; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.result-item {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  border: 1px solid var(--gold-pale);
}
.result-item .val {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--dark);
}
.result-item .val.pos { color: var(--green); }
.result-item .val.neg { color: var(--red); }
.result-item .lbl { font-size: 0.76rem; color: var(--muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.3px; }

/* Sidebar */
.sidebar h3 {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--dark);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 12px;
}
.sidebar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.sidebar-links { list-style: none; }
.sidebar-links li + li { margin-top: 1px; }
.sidebar-links a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.18s;
}
.sidebar-links a:hover { background: var(--gold-faint); color: var(--gold); }
.sidebar-links a .dot { width: 6px; height: 6px; background: var(--gold); border-radius: 50%; flex-shrink: 0; }

/* Info */
.info-box {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 24px 32px;
  margin: 0 0 28px;
}
.info-box h2 {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 9px;
  letter-spacing: -0.3px;
}
.info-box p { font-size: 0.91rem; color: var(--muted); line-height: 1.7; }
.info-box p + p { margin-top: 9px; }

/* Breadcrumb */
.breadcrumb { background: var(--white); border-bottom: 1px solid var(--border); padding: 10px 0; }
.breadcrumb-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  font-size: 0.82rem;
  color: var(--muted);
}
.breadcrumb-inner a { color: var(--gold); text-decoration: none; }
.breadcrumb-inner a:hover { text-decoration: underline; }
.breadcrumb-inner span { margin: 0 6px; }

/* Disclaimer banner */
.disclaimer {
  background: #FFF7ED;
  border: 1px solid #FED7AA;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 0.82rem;
  color: #92400E;
  margin-bottom: 16px;
  display: flex;
  gap: 8px;
  align-items: flex-start;
  line-height: 1.5;
}

/* Data table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin-top: 14px;
}
.data-table th {
  background: var(--gold-pale);
  padding: 7px 12px;
  text-align: left;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--dark3);
}
.data-table td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table .td-label { font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 600; color: var(--text); }
.data-table .pos { color: var(--green); }
.data-table .neg { color: var(--red); }

/* Footer */
footer { background: var(--dark); color: rgba(255,255,255,0.55); padding: 44px 24px 28px; margin-top: 60px; }
.footer-inner { max-width: 1280px; margin: 0 auto; }
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
@media (max-width: 768px) { .footer-top { grid-template-columns: 1fr 1fr; } }
.footer-brand p { margin-top: 10px; font-size: 0.84rem; line-height: 1.65; color: rgba(255,255,255,0.4); }
.footer-col h4 {
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 12px;
}
.footer-col ul { list-style: none; }
.footer-col li + li { margin-top: 6px; }
.footer-col a { color: rgba(255,255,255,0.45); text-decoration: none; font-size: 0.86rem; transition: color 0.18s; }
.footer-col a:hover { color: var(--gold-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.81rem;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom a { color: rgba(255,255,255,0.35); text-decoration: none; }
.footer-bottom a:hover { color: var(--gold-light); }

/* Pages */
.page-hero {
  background: var(--dark);
  padding: 50px 24px;
  text-align: center;
  border-bottom: 1px solid rgba(217,119,6,0.3);
}
.page-hero h1 { font-size: 2rem; font-weight: 800; color: var(--white); letter-spacing: -0.5px; }
.page-hero p { color: rgba(255,255,255,0.6); margin-top: 8px; font-size: 0.97rem; }

.content-section { max-width: 800px; margin: 0 auto; padding: 48px 24px 80px; }
.content-section h2 { font-size: 1.25rem; font-weight: 800; color: var(--dark); margin: 32px 0 12px; letter-spacing: -0.3px; }
.content-section p { color: var(--text); line-height: 1.78; font-size: 0.94rem; margin-bottom: 12px; }
.content-section ul { padding-left: 20px; color: var(--text); line-height: 1.9; font-size: 0.94rem; margin-bottom: 12px; }

.hidden { display: none; }

@media (max-width: 600px) {
  nav a { display: none; }
  .calc-card { padding: 20px 16px; }
  .result-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
}