/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-900: #1a3a1a;
  --green-800: #2d5a27;
  --green-700: #3a7233;
  --green-600: #4a8a3f;
  --green-500: #537f44;
  --green-400: #6ba35a;
  --green-300: #8ec27a;
  --accent:    #4ade80;
  --bg-dark:   #0f1a0f;
  --bg-card:   #162416;
  --bg-card-alt: #1c2e1c;
  --text-primary: #f0f4ef;
  --text-secondary: #b0c4a8;
  --border: rgba(255,255,255,0.08);
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.25);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--green-300); }

img { max-width: 100%; display: block; }

/* ===== Navbar ===== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: background .3s, box-shadow .3s;
}
#navbar.scrolled {
  background: rgba(15,26,15,0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
}

.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.05rem;
  color: var(--text-primary) !important;
}
.nav-logo { height: 36px; }
.nav-icon { color: var(--accent); flex-shrink: 0; }

.nav-links {
  list-style: none; display: flex; gap: 28px;
}
.nav-links a {
  color: var(--text-secondary); font-weight: 500; font-size: .95rem;
  transition: color .2s;
}
.nav-links a:hover { color: var(--accent); }

.hamburger {
  display: none; flex-direction: column; gap: 5px; background: none;
  border: none; cursor: pointer; padding: 4px;
}
.hamburger span {
  width: 24px; height: 2px; background: var(--text-primary);
  transition: transform .3s, opacity .3s;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
#hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(74,222,128,0.08) 0%, transparent 70%),
    linear-gradient(175deg, var(--green-900) 0%, var(--bg-dark) 50%);
  position: relative;
  padding: 120px 24px 80px;
}

.hero-content { max-width: 740px; position: relative; z-index: 1; }
.hero-tag {
  display: inline-block;
  background: rgba(74,222,128,0.12); color: var(--accent);
  padding: 6px 16px; border-radius: 20px;
  font-size: .85rem; font-weight: 600; letter-spacing: .5px;
  margin-bottom: 20px;
}

#hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800; line-height: 1.15;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.1rem; color: var(--text-secondary);
  max-width: 600px; margin: 0 auto 32px;
}

.hero-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 12px 28px;
  border-radius: 8px; font-weight: 600; font-size: .95rem;
  transition: transform .15s, box-shadow .2s;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--accent); color: var(--bg-dark);
  box-shadow: 0 4px 16px rgba(74,222,128,0.25);
}
.btn-primary:hover {
  box-shadow: 0 6px 24px rgba(74,222,128,0.35);
  color: var(--bg-dark);
}

.btn-outline {
  border: 1.5px solid var(--text-secondary); color: var(--text-secondary);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.hero-fade {
  position: absolute; bottom: 0; left: 0; right: 0; height: 120px;
  background: linear-gradient(transparent, var(--bg-dark));
}

/* ===== Sections ===== */
section { padding: 90px 0; }
section:nth-child(even) { background: var(--bg-card); }

.section-title {
  text-align: center; font-size: 2.1rem; font-weight: 800; margin-bottom: 8px;
}
.section-subtitle {
  text-align: center; color: var(--text-secondary); font-size: 1.05rem;
  margin-bottom: 48px;
}

/* ===== About ===== */
.about-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 24px;
  margin-bottom: 36px;
}
.about-card {
  background: var(--bg-card-alt); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px; transition: transform .2s, box-shadow .2s;
}
.about-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-icon { width: 42px; height: 42px; color: var(--accent); margin-bottom: 16px; }
.about-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.about-card p { color: var(--text-secondary); font-size: .95rem; }

.about-note {
  display: flex; align-items: flex-start; gap: 0;
  background: rgba(74,222,128,0.06); border-left: 3px solid var(--accent);
  border-radius: 4px; padding: 18px 22px; color: var(--text-secondary);
  font-size: .92rem; line-height: 1.6;
}

/* ===== Filters ===== */
.filter-bar {
  display: flex; gap: 20px; flex-wrap: wrap;
  margin-bottom: 32px; padding: 20px;
  background: var(--bg-card-alt); border: 1px solid var(--border);
  border-radius: var(--radius);
}
.filter-group { display: flex; flex-direction: column; gap: 6px; min-width: 160px; }
.filter-group label { font-size: .85rem; font-weight: 600; color: var(--text-secondary); }
.filter-group select {
  background: var(--bg-dark); color: var(--text-primary);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 12px; font-size: .95rem; cursor: pointer;
  appearance: auto;
}

/* ===== Charts ===== */
.chart-row { margin-bottom: 24px; }
.chart-row.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

.chart-card {
  background: var(--bg-card-alt); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px; overflow: hidden;
}
.chart-card.wide { grid-column: 1 / -1; }
.chart-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 12px; color: var(--text-secondary); }

.chart-container { width: 100%; min-height: 360px; }

/* ===== Table ===== */
.table-wrap { max-height: 480px; overflow: auto; border-radius: 8px; }
#summaryTable {
  width: 100%; border-collapse: collapse; font-size: .88rem;
}
#summaryTable th, #summaryTable td {
  padding: 8px 12px; text-align: center;
  border-bottom: 1px solid var(--border);
}
#summaryTable th {
  position: sticky; top: 0;
  background: var(--green-800); font-weight: 700;
}
#summaryTable tr:hover td { background: rgba(74,222,128,0.06); }

/* ===== Predictions ===== */
.pred-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px,1fr)); gap: 24px;
}
.pred-card {
  background: var(--bg-card-alt); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.pred-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.pred-card h3 { padding: 20px 20px 12px; font-size: .98rem; color: var(--text-secondary); }
.pred-card img { padding: 0 20px 20px; border-radius: 8px; }

/* ===== Tech ===== */
.tech-grid {
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: center;
}
.tech-pill {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-card-alt); border: 1px solid var(--border);
  border-radius: 28px; padding: 10px 20px;
  font-weight: 600; font-size: .95rem;
  transition: transform .15s;
}
.tech-pill:hover { transform: translateY(-2px); }
.tech-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }

/* ===== Footer ===== */
footer {
  background: var(--green-900); padding: 36px 0; text-align: center;
  border-top: 1px solid var(--border);
}
.footer-inner p { color: var(--text-secondary); font-size: .9rem; }
.footer-note { margin-top: 6px; font-size: .82rem; opacity: .7; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 260px; height: 100vh;
    background: var(--bg-dark); flex-direction: column;
    padding: 80px 32px 32px; gap: 24px;
    transition: right .3s;
    box-shadow: -4px 0 20px rgba(0,0,0,.4);
  }
  .nav-links.open { right: 0; }
  .chart-row.two-col { grid-template-columns: 1fr; }
  .pred-grid { grid-template-columns: 1fr; }
  #hero h1 { font-size: 2rem; }
}