/* =========================================================================
   MySolar — Design System
   Premium German solar company. Crisp, engineered, conversion-focused.
   ========================================================================= */

/* ---- Fonts ---------------------------------------------------------------
   Display: Sora (geometric, engineered, premium)
   Body:    Manrope (clean, highly readable)
   Mono:    Space Mono (technical labels / placeholders)
-------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=Manrope:wght@400;500;600;700;800&family=Space+Mono:wght@400;700&display=swap');

/* ---- Design tokens ------------------------------------------------------- */
:root {
  /* Brand */
  --solar:        #FF8C00;          /* Solar Orange — primary */
  --solar-600:    #E67A00;
  --solar-300:    #FFB559;
  --solar-tint:   #FFF4E6;          /* warm wash */
  --ink:          #0F172A;          /* Dark Blue — secondary / text */
  --ink-700:      #1E293B;
  --ink-600:      #334155;
  --green:        #22C55E;          /* Accent — eco / success */
  --green-600:    #16A34A;
  --green-tint:   #E9FAF0;

  /* Neutrals (cool-toned, low chroma) */
  --bg:           #FFFFFF;
  --bg-soft:      #F6F8FB;          /* light gray sections */
  --bg-softer:    #EEF2F7;
  --line:         #E2E8F0;
  --line-soft:    #EDF1F6;
  --muted:        #64748B;
  --muted-2:      #94A3B8;

  /* Semantic surfaces (default = light) */
  --surface:      var(--bg);
  --surface-2:    var(--bg-soft);
  --surface-3:    var(--bg-softer);
  --text:         var(--ink);
  --text-2:       var(--ink-600);
  --text-3:       var(--muted);
  --border:       var(--line);
  --border-2:     var(--line-soft);
  --card:         #FFFFFF;
  --card-elev:    #FFFFFF;
  --header-bg:    rgba(255,255,255,0.82);
  --hero-overlay-a: rgba(15,23,42,0.72);
  --hero-overlay-b: rgba(15,23,42,0.30);
  --placeholder-a: #EDF1F6;
  --placeholder-b: #E2E8F0;

  /* Radii */
  --r-sm: 8px;
  --r:    14px;
  --r-lg: 22px;
  --r-xl: 30px;
  --r-pill: 999px;

  /* Shadow */
  --shadow-xs: 0 1px 2px rgba(15,23,42,0.06);
  --shadow-sm: 0 2px 8px rgba(15,23,42,0.06);
  --shadow:    0 10px 30px -12px rgba(15,23,42,0.18);
  --shadow-lg: 0 24px 60px -20px rgba(15,23,42,0.28);
  --shadow-solar: 0 18px 40px -16px rgba(255,140,0,0.45);

  /* Layout */
  --maxw: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
  --nav-h: 76px;

  /* Type scale (fluid) */
  --fs-display: clamp(2.6rem, 6vw, 4.6rem);
  --fs-h1:      clamp(2.1rem, 4.4vw, 3.4rem);
  --fs-h2:      clamp(1.7rem, 3vw, 2.5rem);
  --fs-h3:      clamp(1.25rem, 1.8vw, 1.55rem);
  --fs-lead:    clamp(1.05rem, 1.5vw, 1.3rem);
  --fs-body:    1.0625rem;
  --fs-sm:      0.9375rem;
  --fs-xs:      0.8125rem;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

[data-theme="dark"] {
  --surface:    #0B1220;
  --surface-2:  #0F1A2E;
  --surface-3:  #14213B;
  --text:       #F1F5F9;
  --text-2:     #CBD5E1;
  --text-3:     #94A3B8;
  --border:     #213049;
  --border-2:   #1A2740;
  --card:       #111C30;
  --card-elev:  #15233B;
  --header-bg:  rgba(11,18,32,0.78);
  --solar-tint: rgba(255,140,0,0.12);
  --green-tint: rgba(34,197,94,0.12);
  --hero-overlay-a: rgba(2,6,16,0.82);
  --hero-overlay-b: rgba(2,6,16,0.45);
  --placeholder-a: #15233B;
  --placeholder-b: #1C2C49;
  --shadow:    0 10px 30px -12px rgba(0,0,0,0.6);
  --shadow-lg: 0 24px 60px -20px rgba(0,0,0,0.7);
}

/* ---- Reset / base -------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--text);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background .4s var(--ease), color .4s var(--ease);
  overflow-x: hidden;
}

h1, h2, h3, h4, .display {
  font-family: 'Sora', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}

p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

/* ---- Layout helpers ------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: clamp(64px, 9vw, 128px); }
.section--soft { background: var(--surface-2); }
.section--ink { background: var(--ink); color: #fff; }
.section--ink h1, .section--ink h2, .section--ink h3 { color: #fff; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'Space Mono', monospace;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--solar-600);
}
.eyebrow::before {
  content: ""; width: 22px; height: 2px; background: var(--solar); border-radius: 2px;
}
.section--ink .eyebrow { color: var(--solar-300); }

.section-head { max-width: 720px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: var(--fs-h2); margin-top: 16px; }
.section-head p { font-size: var(--fs-lead); color: var(--text-3); margin-top: 18px; }
.section--ink .section-head p { color: rgba(255,255,255,0.7); }

.lead { font-size: var(--fs-lead); color: var(--text-3); }

/* ---- Buttons ------------------------------------------------------------- */
.btn {
  --btn-pad-y: 15px; --btn-pad-x: 26px;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  font-family: 'Sora', sans-serif;
  font-weight: 600; font-size: var(--fs-sm);
  border: 1.5px solid transparent;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: transform .2s var(--ease), box-shadow .25s var(--ease), background .2s, color .2s, border-color .2s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--solar); color: #fff; box-shadow: var(--shadow-solar); }
.btn-primary:hover { transform: translateY(-2px); background: var(--solar-600); box-shadow: 0 22px 46px -16px rgba(255,140,0,0.6); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { transform: translateY(-2px); background: var(--ink-700); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--ink); background: var(--surface-2); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--ink); }
.btn-white:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-green { background: var(--green); color: #06351a; }
.btn-green:hover { transform: translateY(-2px); background: var(--green-600); color:#fff; }
.btn-lg { --btn-pad-y: 18px; --btn-pad-x: 34px; font-size: 1rem; }
.btn-block { width: 100%; }

/* ---- Cards --------------------------------------------------------------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.card-hover:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: var(--r-pill);
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: .02em;
}
.pill-solar { background: var(--solar-tint); color: var(--solar-600); }
.pill-green { background: var(--green-tint); color: var(--green-600); }
.pill-ink   { background: var(--surface-3); color: var(--text-2); }

/* icon chip */
.icon-chip {
  display: grid; place-items: center;
  width: 56px; height: 56px; border-radius: 16px;
  background: var(--solar-tint); color: var(--solar-600);
  flex-shrink: 0;
}
.icon-chip svg { width: 28px; height: 28px; }
.icon-chip.green { background: var(--green-tint); color: var(--green-600); }
.icon-chip.ink   { background: var(--surface-3); color: var(--text); }

/* ---- Image placeholder --------------------------------------------------- */
.ph {
  position: relative; overflow: hidden;
  background:
    repeating-linear-gradient(135deg, var(--placeholder-a) 0 14px, var(--placeholder-b) 14px 28px);
  display: grid; place-items: center;
  color: var(--text-3);
}
.ph::after {
  content: attr(data-label);
  font-family: 'Space Mono', monospace; font-size: var(--fs-xs);
  letter-spacing: .08em; text-transform: uppercase;
  background: var(--surface); color: var(--text-3);
  padding: 7px 14px; border-radius: var(--r-pill);
  box-shadow: var(--shadow-xs); border: 1px solid var(--border);
}
.ph.is-filled { background-size: cover; background-position: center; }
.ph.is-filled::after { display: none; }
[hidden] { display: none !important; }   /* ensure the hidden attribute always wins over .field etc. */
image-slot { border-radius: var(--r-lg); overflow: hidden; }

/* ---- Header / Nav -------------------------------------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: var(--header-bg);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s, box-shadow .3s;
}
.site-header.scrolled { border-bottom-color: var(--border); box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: 100%; }

/* Brand mark */
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark { width: 38px; height: 38px; flex-shrink: 0; }
.brand-name { font-family: 'Sora', sans-serif; font-weight: 800; font-size: 1.32rem; letter-spacing: -0.03em; color: var(--text); }
.brand-name b { color: var(--solar); font-weight: 800; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  padding: 10px 14px; border-radius: var(--r-pill);
  font-weight: 600; font-size: var(--fs-sm); color: var(--text-2);
  display: inline-flex; align-items: center; gap: 6px;
  transition: color .2s, background .2s;
}
.nav-link:hover, .nav-link.active { color: var(--text); background: var(--surface-2); }
.nav-link .caret { width: 14px; height: 14px; transition: transform .25s var(--ease); }
.nav-actions { display: flex; align-items: center; gap: 12px; }

.theme-toggle {
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-2);
  transition: background .2s, color .2s, transform .2s;
}
.theme-toggle:hover { color: var(--text); transform: rotate(15deg); }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
[data-theme="dark"] .theme-toggle .sun { display: block; }
[data-theme="dark"] .theme-toggle .moon { display: none; }

/* Mega menu */
.has-mega { position: relative; }
.mega {
  position: absolute; left: 0; top: 100%;
  transform: translateY(10px);
  width: min(820px, calc(100vw - 32px));
  background: var(--card-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); box-shadow: var(--shadow-lg);
  padding: 22px; z-index: 120;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
}
.has-mega:hover .mega, .mega:hover, .has-mega:focus-within .mega {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0);
}
.has-mega:hover .caret { transform: rotate(180deg); }
.mega-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mega-item { display: flex; gap: 14px; padding: 14px; border-radius: var(--r); transition: background .2s; }
.mega-item:hover { background: var(--surface-2); }
.mega-item .icon-chip { width: 44px; height: 44px; border-radius: 12px; }
.mega-item .icon-chip svg { width: 22px; height: 22px; }
.mega-item h4 { font-size: 1rem; margin-bottom: 2px; }
.mega-item p { font-size: var(--fs-xs); color: var(--text-3); line-height: 1.45; }
.mega-foot { margin-top: 12px; padding: 16px 18px; border-radius: var(--r); background: var(--ink); color:#fff; display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.mega-foot p { font-size: var(--fs-sm); color: rgba(255,255,255,.75); }
.mega-foot strong { color:#fff; display:block; font-family:'Sora',sans-serif; }

/* Mobile nav */
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); flex-direction: column; gap: 5px; align-items: center; justify-content: center; }
.nav-toggle span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .3s var(--ease), opacity .2s; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  position: fixed; inset: var(--nav-h) 0 0 0; z-index: 90;
  background: var(--surface); padding: 24px var(--gutter);
  display: flex; flex-direction: column; gap: 6px;
  transform: translateX(100%); transition: transform .35s var(--ease);
  overflow-y: auto;
}
.nav-open .mobile-nav { transform: translateX(0); }
.mobile-nav a { padding: 16px 18px; border-radius: var(--r); font-family:'Sora',sans-serif; font-weight: 600; font-size: 1.1rem; border: 1px solid var(--border-2); }
.mobile-nav a:hover { background: var(--surface-2); }
.mobile-nav .btn { margin-top: 12px; }

/* ---- Footer -------------------------------------------------------------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.7); padding-block: clamp(56px, 7vw, 88px) 32px; }
[data-theme="dark"] .site-footer { background: #060B16; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 40px; }
.site-footer h4 { color: #fff; font-size: 0.95rem; margin-bottom: 18px; letter-spacing: .04em; text-transform: uppercase; font-family:'Space Mono',monospace; font-weight:700; }
.footer-links { display: flex; flex-direction: column; gap: 11px; }
.footer-links a { color: rgba(255,255,255,.66); font-size: var(--fs-sm); transition: color .2s; width: fit-content; }
.footer-links a:hover { color: var(--solar-300); }
.site-footer .brand-name { color: #fff; }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; font-size: var(--fs-xs); color: rgba(255,255,255,.5); }
.footer-contact { display:flex; flex-direction:column; gap:12px; }
.footer-contact a { display:flex; gap:10px; align-items:flex-start; color: rgba(255,255,255,.78); font-size: var(--fs-sm); }
.footer-contact svg { width:18px; height:18px; flex-shrink:0; margin-top:2px; color: var(--solar-300); }

/* ---- Floating CTA -------------------------------------------------------- */
.floating-cta {
  position: fixed; right: 22px; bottom: 22px; z-index: 80;
  display: flex; flex-direction: column; gap: 12px; align-items: flex-end;
}
.fab {
  display: inline-flex; align-items: center; gap: 10px;
  height: 56px; padding: 0 22px; border-radius: var(--r-pill);
  font-family:'Sora',sans-serif; font-weight: 600; font-size: var(--fs-sm);
  box-shadow: var(--shadow-lg); border: none;
  transform: translateY(0); transition: transform .25s var(--ease), box-shadow .25s;
}
.fab svg { width: 22px; height: 22px; }
.fab:hover { transform: translateY(-3px); }
.fab-wa { background: #25D366; color: #fff; }
.fab-call { background: var(--solar); color: #fff; }
.fab-round { width: 56px; padding: 0; justify-content: center; }
@media (min-width: 768px){ .fab-call { display: none; } }

/* ---- Reveal animation ---------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"]{ transition-delay: .08s; }
.reveal[data-delay="2"]{ transition-delay: .16s; }
.reveal[data-delay="3"]{ transition-delay: .24s; }
.reveal[data-delay="4"]{ transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1 !important; transform: none !important; } }

/* ---- Utilities ----------------------------------------------------------- */
.grid { display: grid; gap: 24px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.stack-sm { display: flex; flex-direction: column; gap: 10px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.mt-s { margin-top: 14px; } .mt-m { margin-top: 28px; } .mt-l { margin-top: 44px; }
.text-solar { color: var(--solar-600); }
.text-green { color: var(--green-600); }
.divider { height:1px; background: var(--border); border:0; }

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .nav-links, .nav-actions .btn { display: none; }
  .nav-toggle { display: flex; }
}
@media (max-width: 720px) {
  .cols-2, .cols-3 { grid-template-columns: 1fr; }
  .mega { display: none; }
}
@media (max-width: 540px) {
  .footer-grid { grid-template-columns: 1fr; }
}