/* SDA Training Resources — Dark Cinematic Theme
   Standalone — no dependency on NRCS-Soil-Data-Access repo */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Source+Serif+4:opsz,wght@8..60,400;8..60,600&display=swap");

:root {
  --bg:#04060c; --panel:#0a0e1a; --panel2:#111625; --panel3:#181e30;
  --border:#1e2640; --border2:#2a3558;
  --text:#d4daf0; --dim:#5a6490; --dimmer:#2e3560;
  --accent:#38bdf8; --accent2:#a78bfa;
  --green:#22c55e; --soil:#c8a84b; --soil2:#8b5e2a;
  --red:#ef4444; --orange:#f97316; --gold:#f59e0b;
  --font:'Inter',system-ui,sans-serif;
  --serif:'Source Serif 4',Georgia,serif;
  --mono:'Courier New','Fira Code',monospace;
  --radius:8px; --shadow:0 8px 32px rgba(0,0,0,.6);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.7;overflow-x:hidden}

/* Scrollbar */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--dim)}
*{scrollbar-width:thin;scrollbar-color:var(--border2) transparent}

/* Typography */
h1,h2,h3,h4{font-family:var(--serif);font-weight:400;letter-spacing:-.01em;color:#fff;line-height:1.15}
p{margin-bottom:.9rem;color:var(--dim)}
a{color:var(--accent);text-decoration:none}
a:hover{color:#7dd3fc}
code{font-family:var(--mono);font-size:.85em;background:var(--panel2);padding:2px 6px;border-radius:3px;color:var(--soil)}
pre{background:#020408;border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;font-family:var(--mono);font-size:12.5px;color:#7dd3fc;overflow-x:auto;line-height:1.75}
pre code{background:none;padding:0;color:inherit;font-size:inherit}

/* Nav */
#nav{position:sticky;top:0;z-index:500;height:48px;background:rgba(4,6,12,.97);border-bottom:1px solid var(--border);backdrop-filter:blur(14px);display:flex;align-items:center;padding:0 24px;gap:6px;overflow-x:auto}
.nav-logo{font-family:var(--serif);font-size:13px;font-style:italic;color:var(--soil);font-weight:700;text-decoration:none;flex-shrink:0;margin-right:8px}
.nav-link{font-size:11px;color:var(--dim);text-decoration:none;padding:0 8px;height:48px;display:flex;align-items:center;border-bottom:2px solid transparent;transition:color .15s;white-space:nowrap}
.nav-link:hover{color:var(--text)}
.nav-link.active{color:var(--text);border-bottom-color:var(--soil)}
.nav-link.hot{color:var(--green);font-weight:700}
.nav-sep{width:1px;height:22px;background:var(--border);flex-shrink:0}
.nav-space{flex:1}

/* Sections */
.section{max-width:1200px;margin:0 auto;padding:72px 40px}
.section.wide{max-width:1400px}
.section.dark{background:var(--panel);max-width:none}
.section.darker{background:#020408;max-width:none}
.section-inner{max-width:1200px;margin:0 auto;padding:72px 40px}
.eyebrow{font-size:10px;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--soil);margin-bottom:14px;display:flex;align-items:center;gap:10px}
.eyebrow::before{content:'';width:20px;height:1px;background:var(--soil)}
.section-h2{font-family:var(--serif);font-size:clamp(1.8rem,3.5vw,3rem);margin-bottom:14px}
.section-h2 em{color:var(--soil);font-style:normal}
.lead{font-size:1.05rem;color:var(--dim);max-width:62ch;line-height:1.8;margin-bottom:40px}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;transition:border-color .18s,transform .18s}
.card:hover{border-color:var(--border2);transform:translateY(-2px)}
.card h3{font-size:1rem;color:#fff;margin-bottom:8px}
.card p{font-size:.875rem;color:var(--dim);margin-bottom:10px}

/* Lesson panel */
.lesson{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:24px;overflow:hidden}
.lesson-header{padding:20px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px;cursor:pointer}
.lesson-num{font-family:var(--serif);font-size:1.8rem;color:var(--soil);line-height:1;min-width:36px}
.lesson-title{flex:1}
.lesson-title h3{font-size:1.1rem;color:#fff;margin-bottom:3px}
.lesson-title p{font-size:.82rem;color:var(--dim);margin:0}
.lesson-tag{font-size:9px;font-weight:800;letter-spacing:.12em;padding:3px 9px;border-radius:10px;border:1px solid;flex-shrink:0}
.tag-beginner{color:var(--green);border-color:rgba(34,197,94,.35)}
.tag-intermediate{color:var(--gold);border-color:rgba(245,158,11,.35)}
.tag-expert{color:var(--red);border-color:rgba(239,68,68,.35)}
.tag-python{color:#60a5fa;border-color:rgba(96,165,250,.35)}
.tag-javascript{color:#fbbf24;border-color:rgba(251,191,36,.35)}
.lesson-body{padding:24px;display:none}
.lesson-body.open{display:block}
.lesson-expand{font-size:12px;color:var(--dim);transition:transform .2s}
.lesson-header:hover .lesson-expand{color:var(--text)}

/* SQL runner */
.sql-panel{background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin:16px 0}
.sql-toolbar{display:flex;align-items:center;gap:8px;padding:8px 12px;border-bottom:1px solid var(--border);background:var(--panel3)}
.sql-toolbar-label{font-size:9px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--soil);flex:1}
.btn-run{padding:5px 14px;background:var(--accent);color:#000;border:none;border-radius:5px;font-size:11px;font-weight:700;cursor:pointer;font-family:var(--font);transition:all .15s;display:flex;align-items:center;gap:5px}
.btn-run:hover{background:#7dd3fc}
.btn-run:disabled{opacity:.5;cursor:not-allowed}
.btn-copy{padding:5px 11px;background:var(--panel2);border:1px solid var(--border);color:var(--dim);border-radius:5px;font-size:11px;cursor:pointer;font-family:var(--font);transition:all .15s}
.btn-copy:hover{border-color:var(--border2);color:var(--text)}
.btn-open{padding:5px 11px;background:var(--panel2);border:1px solid var(--border);color:var(--accent);border-radius:5px;font-size:11px;cursor:pointer;font-family:var(--font);transition:all .15s}
.btn-open:hover{border-color:var(--accent);background:rgba(56,189,248,.08)}
.sql-editor{font-family:var(--mono);font-size:12px;color:#7dd3fc;background:#020408;padding:14px 16px;min-height:80px;width:100%;resize:vertical;border:none;outline:none;line-height:1.75}
.sql-result{border-top:1px solid var(--border);max-height:320px;overflow:auto}
.result-ok{padding:7px 12px;background:rgba(34,197,94,.08);border-bottom:1px solid rgba(34,197,94,.2);font-size:11px;color:var(--green);display:flex;align-items:center;gap:6px}
.result-err{padding:10px 14px;background:rgba(239,68,68,.08);border:1px solid rgba(239,68,68,.2);font-size:11px;color:var(--red);border-radius:0 0 var(--radius) var(--radius)}
.result-loading{padding:12px;font-size:11px;color:var(--accent);display:flex;align-items:center;gap:8px}
.result-table{width:100%;border-collapse:collapse;font-size:11px}
.result-table th{background:var(--panel3);color:var(--dim);padding:6px 12px;text-align:left;font-size:9px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;position:sticky;top:0;border-bottom:1px solid var(--border)}
.result-table td{padding:5px 12px;border-bottom:1px solid var(--border);color:var(--text)}
.result-table tr:hover td{background:var(--panel2)}
@keyframes spin{to{transform:rotate(360deg)}}
.spin{animation:spin .7s linear infinite;display:inline-block}

/* Progress bar */
.progress-bar{display:flex;gap:6px;align-items:center;margin-bottom:28px;flex-wrap:wrap}
.pb-label{font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-right:4px}
.pb-dot{width:10px;height:10px;border-radius:50%;background:var(--border2);cursor:pointer;transition:all .15s}
.pb-dot.done{background:var(--green)}
.pb-dot.active{background:var(--soil);box-shadow:0 0 8px var(--soil)}

/* Code highlight */
.kw{color:#c084fc} .fn{color:#86efac} .co{color:#475569} .st{color:#fbbf24} .nu{color:#f97316}

/* Hero */
.hero{padding:80px 40px 60px;position:relative;overflow:hidden}
.hero-grid-bg{position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(0deg,rgba(56,189,248,.025) 0 1px,transparent 1px 60px),repeating-linear-gradient(90deg,rgba(56,189,248,.025) 0 1px,transparent 1px 60px)}
.hero-inner{max-width:1200px;margin:0 auto;position:relative}
.hero h1{font-family:var(--serif);font-size:clamp(2.4rem,5vw,4.5rem);font-weight:400;color:#fff;letter-spacing:-.02em;line-height:1.08;margin-bottom:18px}
.hero h1 em{color:var(--soil);font-style:normal}
.hero .lead{font-size:1.1rem;max-width:58ch;margin-bottom:32px}

/* Tip / callout boxes */
.tip{background:rgba(200,168,75,.08);border:1px solid rgba(200,168,75,.25);border-left:3px solid var(--soil);border-radius:0 var(--radius) var(--radius) 0;padding:14px 18px;margin:20px 0;font-size:.9rem;color:var(--dim)}
.tip strong{color:var(--soil)}
.note{background:rgba(56,189,248,.06);border:1px solid rgba(56,189,248,.2);border-left:3px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;padding:14px 18px;margin:20px 0;font-size:.9rem;color:var(--dim)}
.note strong{color:var(--accent)}
.warn{background:rgba(239,68,68,.06);border:1px solid rgba(239,68,68,.2);border-left:3px solid var(--red);border-radius:0 var(--radius) var(--radius) 0;padding:14px 18px;margin:20px 0;font-size:.9rem;color:var(--dim)}
.warn strong{color:var(--red)}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.on{opacity:1;transform:none}

/* Footer */
footer{background:#020408;border-top:1px solid var(--border);padding:40px;text-align:center;font-size:.82rem;color:var(--dimmer)}
footer a{color:var(--dim)}
footer a:hover{color:var(--soil)}

/* Step connector */
.step-list{display:flex;flex-direction:column;gap:0}
.step{display:flex;gap:20px;position:relative;padding-bottom:32px}
.step:last-child{padding-bottom:0}
.step-line{position:absolute;left:19px;top:40px;bottom:0;width:1px;background:var(--border)}
.step:last-child .step-line{display:none}
.step-num{width:40px;height:40px;border-radius:50%;background:var(--panel2);border:2px solid var(--border);color:var(--soil);font-family:var(--serif);font-size:1.1rem;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.step-content h4{color:#fff;font-size:1rem;margin-bottom:6px}
.step-content p{font-size:.875rem;margin-bottom:0}

/* Companion link */
.companion-box{background:var(--panel2);border:1px solid var(--border2);border-radius:var(--radius);padding:16px 20px;display:flex;align-items:center;gap:14px;margin:24px 0;text-decoration:none;transition:border-color .18s}
.companion-box:hover{border-color:var(--soil)}
.companion-icon{font-size:1.6rem;flex-shrink:0}
.companion-body .label{font-size:9px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--soil);margin-bottom:3px}
.companion-body strong{display:block;color:#fff;font-size:.95rem}
.companion-body span{font-size:.8rem;color:var(--dim)}
.companion-arrow{margin-left:auto;color:var(--dim);font-size:1.2rem;flex-shrink:0}

/* ── MOBILE RESPONSIVE ─────────────────────────────────────────── */
@media(max-width:768px){
  .section,.section-inner{padding:40px 16px}
  .hero{padding:48px 16px 32px}

  /* Nav: hide overflow links, keep logo + active */
  #nav{padding:0 12px;gap:4px}
  .nav-link:not(.active):not(.hot){display:none}
  /* Allow horizontal scroll on nav as fallback */
  #nav{overflow-x:auto;-webkit-overflow-scrolling:touch}

  /* SQL panels: stack vertically */
  .sql-panel{margin:12px 0}
  .sql-toolbar{flex-wrap:wrap;gap:6px;padding:8px 10px}
  .sql-toolbar-label{width:100%;order:-1}
  .sql-editor{font-size:11px;min-height:120px}

  /* Code blocks: horizontal scroll, never wrap */
  pre,code,.sql-editor{white-space:pre;overflow-x:auto;-webkit-overflow-scrolling:touch}

  /* Result tables: scroll horizontally */
  .sql-result{overflow-x:auto}
  .result-table{min-width:400px}

  /* Lesson panels */
  .lesson-header{padding:12px 14px}
  .lesson-body{padding:12px 14px}

  /* Cards/grids: single column */
  .card-grid,.curriculum-grid,.track-grid{grid-template-columns:1fr!important}

  /* Reduce font sizes slightly */
  .hero h1{font-size:clamp(22px,6vw,32px)}
  .lead{font-size:13px}
}

/* Query runner: stack panes on mobile */
@media(max-width:600px){
  html,body{height:auto!important;overflow:auto!important}
  #shell{height:auto!important}
  #panes{flex-direction:column!important;height:auto!important;overflow:visible!important}
  #left{width:100%!important;flex-shrink:unset!important;height:auto}
  #sql-ta{min-height:180px;resize:vertical}
  #right{min-height:300px;overflow-y:visible}
}