/* ═══════════════════════════════════════════
   TomatoLite Website — Design System
   Reuses TomatoLite pipeline theme tokens
   ═══════════════════════════════════════════ */

/* Fonts: system font stack only — zero external dependencies, 100% free */
/* ═══ THEME: Pipeline (default) ═══ */
:root {
  --brand:        hsl(237, 47%, 57%);
  --brand-hover:  hsl(237, 47%, 50%);
  --brand-soft:   hsl(237, 100%, 98%);
  --brand-text:   #fff;

  --bg:           hsl(240, 3%, 98%);
  --surface:      #fff;
  --surface-hover:hsl(240, 5%, 96%);

  --ink:          hsl(240, 4%, 12%);
  --ink-secondary:hsl(240, 3%, 38%);
  --ink-muted:    hsl(240, 3%, 55%);

  --edge:         hsl(240, 4%, 92%);
  --edge-hover:   hsl(240, 4%, 84%);

  --green:        hsl(142, 45%, 40%);
  --green-soft:   hsl(140, 50%, 97%);
  --amber:        hsl(32, 85%, 44%);
  --amber-soft:   hsl(32, 90%, 96%);
  --red:          hsl(0, 65%, 48%);
  --red-soft:     hsl(0, 70%, 97%);

  --radius:       0.5rem;
  --shadow:       0 0 0 1px rgba(0,0,0,.03), 0 1px 3px rgba(0,0,0,.04);
  --shadow-hover: 0 0 0 1px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.08);
  --shadow-lg:    0 0 0 1px rgba(0,0,0,.05), 0 24px 60px rgba(0,0,0,.15);

  --font:         system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
}

/* ═══ RESET ═══ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font);font-size:16px;line-height:1.6;background:var(--bg);color:var(--ink)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
input,textarea,select{font:inherit}

/* ═══ LAYOUT ═══ */
.container{max-width:960px;margin:0 auto;padding:0 24px}
.container-wide{max-width:1120px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}

/* ═══ NAVBAR ═══ */
.navbar{
  position:sticky;top:0;z-index:100;
  background:hsla(0,0%,100%,.85);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--edge);
}
.navbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;max-width:1120px;margin:0 auto;padding:0 24px;
}
.navbar-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink)}
.navbar-logo-icon{
  width:30px;height:30px;border-radius:7px;flex-shrink:0;
  background:var(--brand);
}
.navbar-links{display:flex;align-items:center;gap:4px}
.navbar-links a{
  padding:6px 14px;border-radius:var(--radius);font-size:14px;font-weight:500;
  color:var(--ink-secondary);transition:all .12s;
}
.navbar-links a:hover{background:var(--surface-hover);color:var(--ink)}
.navbar-cta{
  padding:7px 18px;border-radius:var(--radius);font-size:14px;font-weight:600;
  background:var(--brand);color:var(--brand-text);transition:all .15s;
}
.navbar-cta:hover{background:var(--brand-hover)}

/* ═══ HERO ═══ */
.hero{padding:100px 0 80px;text-align:center}
.hero h1{font-size:3rem;font-weight:700;line-height:1.15;letter-spacing:-0.02em;margin-bottom:20px}
.hero h1 span{color:var(--brand)}
.hero p{font-size:1.2rem;color:var(--ink-secondary);max-width:560px;margin:0 auto 36px;line-height:1.7}
.hero-actions{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
.hero-actions .btn{padding:12px 28px;font-size:15px}
.hero-meta{margin-top:28px;font-size:13px;color:var(--ink-muted)}

.mobile-only{display:none}
@media(max-width:768px){
  .mobile-only{display:block}
}

/* ═══ BUTTONS ═══ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 22px;border-radius:var(--radius);
  font-size:14px;font-weight:600;transition:all .15s;
  border:none;white-space:nowrap;
}
.btn-brand{background:var(--brand);color:var(--brand-text)}
.btn-brand:hover{background:var(--brand-hover)}
.btn-secondary{border:1px solid var(--edge);color:var(--ink);background:var(--surface)}
.btn-secondary:hover{background:var(--surface-hover);border-color:var(--edge-hover)}
.btn-ghost{color:var(--ink-secondary);background:transparent}
.btn-ghost:hover{background:var(--surface-hover);color:var(--ink)}
.btn-sm{padding:6px 14px;font-size:13px}
.btn-lg{padding:14px 32px;font-size:16px}

/* ═══ CARDS ═══ */
.card{
  background:var(--surface);border:1px solid var(--edge);
  border-radius:var(--radius);box-shadow:var(--shadow);
  transition:box-shadow .2s,border-color .2s,transform .2s;
}
.card:hover{box-shadow:var(--shadow-hover);border-color:var(--edge-hover);transform:scale(1.02)}
.card-body{padding:24px}
.card-icon{
  width:36px;height:36px;border-radius:8px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
}

/* ═══ GRID ═══ */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:768px){
  .grid2,.grid3{grid-template-columns:1fr}
}

/* ═══ TYPOGRAPHY ═══ */
.section-title{font-size:1.875rem;font-weight:700;text-align:center;margin-bottom:12px;letter-spacing:-0.01em}
.section-subtitle{font-size:1rem;color:var(--ink-secondary);text-align:center;max-width:520px;margin:0 auto 48px}

/* ═══ BADGES ═══ */
.badge{
  display:inline-flex;align-items:center;padding:2px 10px;
  border-radius:99px;font-size:12px;font-weight:500;
}
.badge-green{background:var(--green-soft);color:var(--green)}
.badge-amber{background:var(--amber-soft);color:var(--amber)}
.badge-red{background:var(--red-soft);color:var(--red)}
.badge-brand{background:var(--brand-soft);color:var(--brand)}

/* ═══ FAQ ═══ */
.faq-item{border-bottom:1px solid var(--edge)}
.faq-q{
  width:100%;padding:18px 0;text-align:left;
  font-size:15px;font-weight:600;color:var(--ink);
  background:none;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.faq-q::after{content:'+';font-size:18px;color:var(--ink-muted);transition:transform .2s}
.faq-q.open::after{content:'−'}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a.open{max-height:300px}
.faq-a p{padding:0 0 18px;font-size:14px;color:var(--ink-secondary);line-height:1.7}

/* ═══ FORMS ═══ */
.form-group{margin-bottom:20px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.form-input,.form-select,.form-textarea{
  width:100%;padding:10px 14px;border:1px solid var(--edge);
  border-radius:var(--radius);font-size:14px;color:var(--ink);
  background:var(--surface);transition:border-color .15s,box-shadow .15s;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px hsl(237,47%,57%/.12);
}
.form-textarea{min-height:140px;resize:vertical;line-height:1.6}
.form-hint{font-size:12px;color:var(--ink-muted);margin-top:4px}
.form-error{font-size:12px;color:var(--red);margin-top:4px}

/* ═══ TOAST ═══ */
.toast{
  position:fixed;bottom:24px;right:24px;z-index:999;
  padding:14px 22px;border-radius:var(--radius);
  font-size:14px;font-weight:500;color:#fff;
  transform:translateY(100px);opacity:0;transition:all .3s ease;
}
.toast.show{transform:translateY(0);opacity:1}
.toast-success{background:var(--green)}
.toast-error{background:var(--red)}

/* ═══ PROGRESS BAR ═══ */
.upload-progress{display:none;margin-top:16px}
.upload-progress.active{display:block}
.upload-progress-bar{
  height:6px;background:var(--surface-hover);
  border-radius:99px;overflow:hidden;margin-top:8px;
}
.upload-progress-fill{
  height:100%;border-radius:99px;
  background:var(--brand);transition:width .2s;
  width:0%;
}
.upload-progress-text{font-size:13px;color:var(--ink-secondary)}

/* ═══ TABLE ═══ */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;padding:10px 14px;font-size:12px;font-weight:600;color:var(--ink-muted);text-transform:uppercase;letter-spacing:.04em;border-bottom:2px solid var(--edge)}
td{padding:12px 14px;border-bottom:1px solid var(--edge);color:var(--ink-secondary)}
tr:hover td{background:var(--surface-hover)}

/* ═══ DOWNLOAD CARDS ═══ */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:768px){.dl-grid{grid-template-columns:1fr}}
.dl-card{padding:28px 24px;text-align:center}
.dl-card h3{font-size:18px;margin:12px 0 6px}
.dl-card .size{font-size:13px;color:var(--ink-muted);margin-bottom:16px}
.dl-card .btn{width:100%;justify-content:center}

/* ═══ FOOTER ═══ */
.footer{
  border-top:1px solid var(--edge);padding:40px 0;
  text-align:center;font-size:13px;color:var(--ink-muted);
}
.footer-links{display:flex;justify-content:center;gap:24px;margin-bottom:16px}
.footer-links a:hover{color:var(--ink)}

/* ═══ ADMIN ═══ */
.admin-hidden{display:none!important}
#admin-login{max-width:360px;margin:60px auto}
#admin-panel{max-width:960px;margin:0 auto}
.admin-tabs{display:flex;border-bottom:1px solid var(--edge);margin-bottom:24px}
.admin-tab{
  padding:10px 20px;font-size:14px;font-weight:500;
  color:var(--ink-secondary);border-bottom:2px solid transparent;
  cursor:pointer;transition:all .12s;background:none;border-top:none;border-left:none;border-right:none;
}
.admin-tab:hover{color:var(--ink)}
.admin-tab.active{color:var(--brand);border-bottom-color:var(--brand)}

/* ═══ VERSION HISTORY ═══ */
.version-block{margin-bottom:32px}
.version-header{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.version-number{font-size:20px;font-weight:700}
.version-date{font-size:13px;color:var(--ink-muted)}
.version-notes{font-size:14px;color:var(--ink-secondary);line-height:1.7;white-space:pre-wrap}
.version-files{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}
.version-files a{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--radius);
  font-size:13px;font-weight:500;border:1px solid var(--edge);
  transition:all .12s;
}
.version-files a:hover{background:var(--surface-hover);border-color:var(--edge-hover)}

/* ═══ PLATFORM ICONS ═══ */
.platform-svg{width:48px;height:48px;display:block;margin:0 auto 8px}
.btn:disabled{opacity:.45;pointer-events:none}

/* ═══ LANGUAGE SWITCHER ═══ */
.lang-switcher{display:flex;align-items:center;gap:2px;margin-left:8px;padding-left:8px;border-left:1px solid var(--edge)}
.lang-btn{
  padding:3px 7px;border-radius:4px;font-size:12px;font-weight:600;
  background:transparent;color:var(--ink-muted);border:none;
  cursor:pointer;transition:all .12s;
}
.lang-btn:hover{background:var(--surface-hover);color:var(--ink)}
.lang-btn.active{background:var(--brand);color:var(--brand-text)}

/* ═══ UTILITY ═══ */
.text-center{text-align:center}
.text-muted{color:var(--ink-muted)}
.text-secondary{color:var(--ink-secondary)}
.mt-4{margin-top:16px}
.mt-8{margin-top:32px}
.mb-4{margin-bottom:16px}
.mb-8{margin-bottom:32px}
.flex{display:flex}
.items-center{align-items:center}
.gap-2{gap:8px}
.gap-4{gap:16px}
.justify-between{justify-content:space-between}
.flex-wrap{flex-wrap:wrap}