/* ============================================================
   GRID Software – LP Produkty (SolaTronic × CHYTRÝ ENERGETIK)
   Navazuje na css/web.css. Barvy produktů z jejich webů:
   SolaTronic #49abe5 / #fbc30d / navy #0c2040, CHE #f5793b / navy.
============================================================ */
:root {
  --st-blue:    #49abe5;
  --st-blue-dk: #1f7fbf;   /* modrá pro text na bílé (kontrast velkého písma) */
  --st-yellow:  #fbc30d;
  --st-navy:    #0c2040;
  --st-tint:    #f1f8fd;
  --che-orange: #f5793b;
  --che-orange-dk: #e2662a;
  --che-tint:   #fdf1ea;
}

.sec { padding: 96px 0; }
.sec-head { max-width: 720px; margin-bottom: 48px; }
.sec-head.center { text-align: center; margin-left: auto; margin-right: auto; }

/* ── 2. DVA PRODUKTY VEDLE SEBE ── */

/* ── 3. + 4. DETAIL PRODUKTU ── */
.prod-st { background: var(--st-tint); }
.prod-che { background: var(--che-tint); }
.prod-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; }
.prod-st .eyebrow { color: var(--st-blue-dk); }
.prod-che .eyebrow { color: var(--che-orange-dk); }
.prod-che .h2 em { font-style: normal; color: var(--che-orange-dk); }
.feat { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 28px; margin-top: 32px; }
.feat h3 { font-size: .98rem; font-weight: 700; line-height: 1.35; display: flex; gap: 10px; align-items: baseline; }
.feat h3::before { content: ""; width: 8px; height: 8px; border-radius: 2px; flex: none; transform: translateY(-1px); }
.prod-st .feat h3::before { background: var(--st-yellow); }
.prod-che .feat h3::before { background: var(--che-orange); }
.feat p { font-size: .88rem; color: var(--gray-600); line-height: 1.6; margin: 4px 0 0 18px; }
/* SolaTronic: karty funkcí s ikonami z webu solatronic.eu */
.st-feat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
.st-card { position: relative; overflow: hidden; display: flex; gap: 16px; align-items: flex-start; background: linear-gradient(135deg, var(--st-navy) 0%, #1b4f80 100%); border: 1px solid rgba(73,171,229,.25); border-radius: 14px; padding: 26px 24px 24px; box-shadow: 0 14px 36px rgba(12,32,64,.22); transition: transform .3s cubic-bezier(.22,1,.36,1), box-shadow .3s; }
.st-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--st-yellow); box-shadow: 0 2px 14px rgba(251,195,13,.45); }
.st-card:hover { transform: translateY(-3px); box-shadow: 0 20px 48px rgba(12,32,64,.32); }
.st-ic { width: 44px; height: 44px; flex: none; border-radius: 12px; background: rgba(73,171,229,.16); border: 1px solid rgba(73,171,229,.28); display: flex; align-items: center; justify-content: center; }
.st-ic svg { width: 22px; height: 22px; }
.st-card h3 { font-size: 1rem; font-weight: 700; line-height: 1.35; color: #fff; }
.st-card p { font-size: .88rem; color: rgba(255,255,255,.75); line-height: 1.6; margin-top: 6px; }
.prod-st .tech { border: 0; margin-top: 28px; padding: 28px 8px; gap: 0; background: var(--st-yellow); border-radius: 14px; box-shadow: 0 14px 36px rgba(251,195,13,.28); }
.prod-st .tech-item { padding: 0 24px; }
.prod-st .tech-item + .tech-item { border-left: 2px solid var(--st-blue-dk); }
.prod-st .tech-item strong { color: var(--st-navy); font-size: 1.15rem; line-height: 1.25; }
.prod-st .tech-item span { display: block; color: #3a3420; line-height: 1.5; margin-top: 4px; }
/* SolaTronic: závěrečný panel – loga výrobců + CTA */
.st-end { margin-top: 28px; display: grid; grid-template-columns: 1fr 300px; background: #fff; border: 1px solid rgba(12,32,64,.08); border-radius: 14px; box-shadow: 0 10px 30px rgba(12,32,64,.07); overflow: hidden; }
.st-brands { padding: 28px 32px; }
.st-end-lbl { font-size: .74rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--st-blue-dk); }
.st-logos { list-style: none; margin: 18px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.st-logos li { height: 64px; display: flex; align-items: center; justify-content: center; border-radius: 10px; background: var(--st-tint); padding: 0 12px; }
.st-logos img { max-width: 100%; height: auto; object-fit: contain; filter: grayscale(1); opacity: .7; transition: filter .25s, opacity .25s; }
.st-logos li:hover img { filter: none; opacity: 1; }
.st-more { margin-top: 14px; font-size: .85rem; color: var(--gray-600); }
.st-cta { background: linear-gradient(135deg, var(--st-navy) 0%, #1b4f80 100%); padding: 28px; display: flex; flex-direction: column; justify-content: center; gap: 18px; position: relative; }
.st-cta::before { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 3px; background: var(--st-yellow); box-shadow: 2px 0 14px rgba(251,195,13,.45); }
.st-cta p { color: rgba(255,255,255,.8); font-size: .92rem; line-height: 1.55; }
.st-cta .btn { align-self: flex-start; }
/* Chytrý energetik: karty funkcí s ikonami z webu CHE (icons/navy), barvy CHE */
.che-feat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
.che-card { position: relative; overflow: hidden; display: flex; gap: 16px; align-items: flex-start; background: linear-gradient(150deg, #1a1e29 0%, #2e3548 55%, #424c67 100%); border: 1px solid rgba(245,121,59,.22); border-radius: 14px; padding: 26px 24px 24px; box-shadow: 0 14px 36px rgba(26,30,41,.22); transition: transform .3s cubic-bezier(.22,1,.36,1), box-shadow .3s; }
.che-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--che-orange); box-shadow: 0 2px 14px rgba(245,121,59,.5); }
.che-card:hover { transform: translateY(-3px); box-shadow: 0 20px 48px rgba(26,30,41,.32); }
.che-ic { width: 52px; height: 52px; flex: none; border-radius: 50%; background: rgba(245,121,59,.14); border: 1px solid rgba(245,121,59,.3); display: flex; align-items: center; justify-content: center; }
.che-ic img { width: 36px; height: 36px; }
.che-card h3 { font-size: 1rem; font-weight: 700; line-height: 1.35; color: #fff; margin-top: 2px; }
.che-card p { font-size: .88rem; color: rgba(255,255,255,.75); line-height: 1.6; margin-top: 6px; }
.che-strip { margin-top: 28px; background: var(--che-orange); border-radius: 14px; box-shadow: 0 14px 36px rgba(245,121,59,.28); padding: 22px 28px; display: flex; align-items: center; gap: 24px; color: #1a1e29; }
.che-strip strong { font-size: 1.15rem; font-weight: 800; white-space: nowrap; padding-right: 24px; border-right: 2px solid #1a1e29; }
.che-strip span { font-size: .95rem; font-weight: 500; }
.che-end { grid-template-columns: 1fr 340px; }
.che-end .st-end-lbl { color: var(--che-orange-dk); }
.che-end .st-cta { background: linear-gradient(150deg, #1a1e29 0%, #2e3548 55%, #424c67 100%); }
.che-end .st-cta::before { background: var(--che-orange); box-shadow: 2px 0 14px rgba(245,121,59,.5); }
.che-who { list-style: none; margin: 18px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.che-who li { background: var(--che-tint); border-radius: 10px; padding: 18px 18px 16px; border-top: 3px solid var(--che-orange); }
.che-who strong { display: block; font-size: .98rem; font-weight: 800; color: #1a1e29; line-height: 1.3; }
.che-who span { display: block; font-size: .84rem; color: var(--gray-600); line-height: 1.5; margin-top: 6px; }
.prod-foot { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 36px; }
.prod-who { font-size: .85rem; color: var(--navy-mid); max-width: 340px; }
.btn-st { background: var(--st-blue); color: #fff; box-shadow: 0 6px 20px rgba(73,171,229,.3); }
.btn-st:hover { background: #3197d4; transform: translateY(-1px); }
.btn-che { background: var(--che-orange); color: #fff; box-shadow: 0 6px 20px rgba(245,121,59,.28); }
.btn-che:hover { background: var(--che-orange-dk); transform: translateY(-1px); }

/* screenshot v okně prohlížeče */
.shot { border-radius: 12px; overflow: hidden; background: #fff; box-shadow: 0 18px 60px rgba(12,32,64,.18); border: 1px solid rgba(12,32,64,.08); }
.shot-bar { display: flex; gap: 6px; padding: 10px 14px; background: #eef2f6; }
.shot-bar span { width: 9px; height: 9px; border-radius: 50%; background: #cfd6de; }
.shot img { width: 100%; height: auto; }
.shot-cap { font-size: .78rem; color: var(--gray-400); margin-top: 12px; text-align: center; }

.tech { margin-top: 40px; padding-top: 28px; border-top: 1px solid rgba(12,32,64,.1); display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tech-item strong { display: block; font-size: 1.25rem; font-weight: 800; color: var(--st-navy); letter-spacing: -.01em; }
.tech-item span { font-size: .82rem; color: var(--gray-600); }
.brands { margin-top: 22px; font-size: .82rem; color: var(--gray-400); }
.brands b { display: inline-block; color: var(--navy-mid); font-weight: 600; margin-right: 14px; white-space: nowrap; }

/* CHE: ilustrace upozornění (nemáme screenshoty) */
.alerts { background: #fff; border-radius: 14px; box-shadow: 0 18px 60px rgba(46,53,72,.14); padding: 22px 22px 10px; }
.alerts-head { display: flex; align-items: center; justify-content: space-between; font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--gray-400); margin-bottom: 14px; }
.alerts-head .live { display: inline-flex; align-items: center; gap: 6px; color: var(--che-orange-dk); letter-spacing: .04em; }
.alerts-head .live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--che-orange); box-shadow: 0 0 0 4px rgba(245,121,59,.18); }
.alert { display: grid; grid-template-columns: 36px 1fr; gap: 14px; padding: 14px 0; border-top: 1px solid var(--gray-200); }
.alert-ic { width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; }
.alert-ic.warn { background: #fdecea; color: #d63b30; }
.alert-ic.cap { background: var(--che-tint); color: var(--che-orange-dk); }
.alert-ic.doc { background: #eef1f6; color: var(--navy-mid); }
.alert-t { font-size: .92rem; font-weight: 700; line-height: 1.35; }
.alert-d { font-size: .82rem; color: var(--gray-600); margin-top: 3px; }
.alert-d b { color: #d63b30; font-weight: 700; }
.start-box { margin-top: 28px; background: #fff; border-left: 4px solid var(--che-orange); border-radius: 0 10px 10px 0; padding: 16px 20px; font-size: .92rem; }
.start-box strong { display: block; margin-bottom: 2px; }

/* ── 5. SROVNÁNÍ ── */
.cmp { border-radius: var(--r); overflow: hidden; border: 1px solid var(--gray-200); box-shadow: 0 24px 64px rgba(46,53,72,.18), 0 6px 18px rgba(46,53,72,.08); }
.cmp-row { display: grid; grid-template-columns: 1fr 1.4fr 1.4fr; }
.cmp-row + .cmp-row { border-top: 1px solid var(--gray-200); }
.cmp-row > div { padding: 18px 24px; font-size: .94rem; line-height: 1.55; }
.cmp-row > div:first-child { font-weight: 700; font-size: .85rem; color: var(--navy-mid); background: var(--gray-50); }
.cmp-head > div { padding: 20px 24px; }
.cmp-head .c-st { background: linear-gradient(135deg, var(--st-navy) 0%, #1b4f80 100%); }
.cmp-head .c-che { background: linear-gradient(150deg, #1a1e29 0%, #2e3548 55%, #424c67 100%); }
.cmp-head img { height: 26px; width: auto; }
.cmp-head .c-che img { height: 42px; margin: -8px 0 -8px -8px; }
.cmp-head > div:first-child { background: var(--gray-50); }
.cmp-row .c-st { border-left: 1px solid var(--gray-200); }
.cmp-row:not(.cmp-head) .c-st { background: #e9f4fc; }
.cmp-row:not(.cmp-head) .c-che { background: #fdece2; }
.cmp-row .c-che { border-left: 1px solid var(--gray-200); }
.cmp-key .c-st { color: var(--st-blue-dk); font-weight: 800; font-size: 1.05rem; }
.cmp-key .c-che { color: var(--che-orange-dk); font-weight: 800; font-size: 1.05rem; }
.cmp-lbl { display: none; }
.cmp-links > div { padding-top: 16px; padding-bottom: 16px; }
.cmp-more { font-weight: 700; font-size: .92rem; }
.cmp-more svg { display: inline-block; vertical-align: -2px; margin-left: 4px; }
.c-st .cmp-more { color: var(--st-blue-dk); }
.c-che .cmp-more { color: var(--che-orange-dk); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }


/* ── 7. PRO KOHO ── */
.seg-band { background: #fff; }
.seg-band .seg { background: #F3F4F6; border-color: var(--gray-200); box-shadow: none; }
.seg-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.seg { border: 1px solid var(--gray-200); border-radius: var(--r); overflow: hidden; display: flex; flex-direction: column; background: #fff; box-shadow: 0 6px 24px rgba(46,53,72,.06); }
.seg-img { aspect-ratio: 2 / 1; overflow: hidden; background: var(--gray-50); }
.seg-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s cubic-bezier(.22,1,.36,1); }
.seg:hover .seg-img img { transform: scale(1.04); }
.seg-body { padding: 26px 28px 30px; display: flex; flex-direction: column; flex: 1; }
.seg h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 10px; }
.seg p { font-size: .92rem; color: var(--gray-600); line-height: 1.65; }

/* ── 8. BEZPEČNOST ── */
.security { background: var(--navy-deep); color: #fff; position: relative; overflow: hidden; }
.security::before { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse 45% 70% at 100% 0%, rgba(73,171,229,.14), transparent 70%), radial-gradient(ellipse 45% 70% at 0% 100%, rgba(245,121,59,.12), transparent 70%); pointer-events: none; }
.security .wrap { position: relative; }
.sec-grid { display: grid; grid-template-columns: 1fr 1.35fr; gap: 56px; align-items: start; }
.sec-badge { display: inline-flex; align-items: center; gap: 14px; margin-top: 30px; padding: 16px 20px; border-radius: 14px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); }
.sec-badge strong { font-size: 1.5rem; font-weight: 800; letter-spacing: -.01em; }
.sec-badge span { display: block; font-size: .78rem; color: rgba(255,255,255,.6); }
.sec-tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sec-tile { padding: 22px 22px 20px; border-radius: 14px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.09); }
.sec-tile .gs-ic { margin-bottom: 14px; }
.sec-tile h3 { font-size: .98rem; font-weight: 700; margin-bottom: 6px; }
.sec-tile p { font-size: .85rem; color: rgba(255,255,255,.65); line-height: 1.6; }

/* ── 9. FAQ ── */
.faq-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 56px; align-items: start; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--gray-200); border-radius: 12px; background: #fff; }
.faq-item summary { list-style: none; cursor: pointer; padding: 18px 52px 18px 22px; font-weight: 700; font-size: .98rem; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: ""; position: absolute; right: 22px; top: 50%; width: 10px; height: 10px; border-right: 2px solid var(--orange); border-bottom: 2px solid var(--orange); transform: translateY(-70%) rotate(45deg); transition: transform .2s; }
.faq-item[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq-item p { padding: 0 22px 20px; font-size: .93rem; color: var(--gray-600); line-height: 1.7; }

/* ── RESPONZIVITA ── */
@media (max-width: 1000px) {
  .prod-grid, .sec-grid, .faq-grid { grid-template-columns: 1fr; gap: 40px; }
  .seg-grid { grid-template-columns: 1fr; }
  .tech { grid-template-columns: 1fr 1fr; }
  .st-feat { grid-template-columns: 1fr 1fr; }
  .st-end { grid-template-columns: 1fr; }
  .che-feat { grid-template-columns: 1fr 1fr; }
  .che-end { grid-template-columns: 1fr; }
  .che-end .st-cta::before { box-shadow: 0 2px 14px rgba(245,121,59,.5); }
  .st-cta::before { top: 0; left: 0; right: 0; bottom: auto; width: auto; height: 3px; box-shadow: 0 2px 14px rgba(251,195,13,.45); }
  .prod-st .tech-item:nth-child(odd) { border-left: 0; }
  .prod-st .tech-item:nth-child(n+3) { border-top: 2px solid var(--st-blue-dk); }
}
@media (max-width: 760px) {
  .sec { padding: 64px 0; }
  .feat, .sec-tiles, .st-feat { grid-template-columns: 1fr; }
  .st-feat { margin-top: 40px; gap: 14px; }
  .st-card { padding: 22px 20px 20px; }
  .st-brands { padding: 22px 18px; }
  .st-logos { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .st-logos li { height: 56px; }
  .st-logos img { filter: none; opacity: 1; }
  .st-cta { padding: 24px 18px; }
  .che-feat { grid-template-columns: 1fr; margin-top: 40px; gap: 14px; }
  .che-card { padding: 22px 20px 20px; }
  .che-who { grid-template-columns: 1fr; }
  .che-strip { flex-direction: column; align-items: flex-start; gap: 10px; padding: 20px; }
  .che-strip strong { border-right: 0; padding-right: 0; white-space: normal; }
  .prod-st .tech { padding: 6px 0; }
  .prod-st .tech-item { padding: 18px 16px; }
  .prod-st .tech-item strong { font-size: 1.05rem; }
  .cmp-head { display: none; }
  .cmp-row { grid-template-columns: 1fr 1fr; }
  .cmp-row > div:first-child { grid-column: 1 / -1; padding: 12px 18px; }
  .cmp-row > div { padding: 14px 18px; font-size: .88rem; }
  .cmp-row .c-che { border-left: 1px solid var(--gray-200); }
  .cmp-row .c-st { border-left: 0; }
  .cmp-links > div:first-child { display: none; }
  .cmp-links { grid-template-columns: minmax(0,1fr) minmax(0,1fr); }
  .cmp-more { font-size: .85rem; }
  .cmp-lbl { display: block; font-size: .75rem; font-weight: 800; letter-spacing: .02em; margin-bottom: 4px; } /* SolaTronic bez verzálek (pravidlo značek) */
  .c-st .cmp-lbl { color: var(--st-blue-dk); }
  .c-che .cmp-lbl { color: var(--che-orange-dk); }
}