/* ============================================================
   GEOGAS LEVANTE — app.css  v3
   Unified SPA stylesheet with dark mode
   ============================================================ */

/* ── LIGHT TOKENS ─────────────────────────────────────────── */
:root,
[data-theme="light"] {
  --clr-primary:       #1a6c7a;
  --clr-primary-dark:  #0d4a57;
  --clr-primary-light: #2a8a9a;
  --clr-accent:        #f0a832;
  --clr-accent-dark:   #d4891a;
  --clr-bg:            #f7f9fb;
  --clr-surface:       #ffffff;
  --clr-dark:          #0d1b2a;
  --clr-text:          #1e3040;
  --clr-text-muted:    #5a7a8a;
  --clr-border:        #dde8ec;
  --clr-navbar-bg:     rgba(255,255,255,.95);
  --clr-navbar-scroll: rgba(255,255,255,.97);
  --clr-topbar-bg:     #0d4a57;
  --clr-topbar-text:   rgba(255,255,255,.85);
  --shadow-sm:         0 2px 8px rgba(13,75,87,.08);
  --shadow-md:         0 6px 24px rgba(13,75,87,.12);
  --shadow-lg:         0 16px 48px rgba(13,75,87,.18);
}

/* ── DARK TOKENS ──────────────────────────────────────────── */
[data-theme="dark"] {
  --clr-primary:       #2a9aac;
  --clr-primary-dark:  #1a7a8a;
  --clr-primary-light: #3abace;
  --clr-accent:        #f0a832;
  --clr-accent-dark:   #d4891a;
  --clr-bg:            #0d1b24;
  --clr-surface:       #132130;
  --clr-dark:          #e8f0f4;
  --clr-text:          #d0e4ec;
  --clr-text-muted:    #7aa8ba;
  --clr-border:        #1e3445;
  --clr-navbar-bg:     rgba(13,27,36,.95);
  --clr-navbar-scroll: rgba(13,27,36,.98);
  --clr-topbar-bg:     #091520;
  --clr-topbar-text:   rgba(200,228,240,.8);
  --shadow-sm:         0 2px 8px rgba(0,0,0,.3);
  --shadow-md:         0 6px 24px rgba(0,0,0,.4);
  --shadow-lg:         0 16px 48px rgba(0,0,0,.5);
}

/* ── SHARED TOKENS ────────────────────────────────────────── */
:root {
  --radius-sm:    10px;
  --radius-md:    18px;
  --radius-lg:    28px;
  --transition:   0.28s ease;
  --section-pad:  6rem 1.5rem;
  --nav-h:        76px;
  --topbar-h:     40px;
}

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: 'Playfair Display', Georgia, serif; line-height: 1.25; }

/* ── PAGE SYSTEM ──────────────────────────────────────────── */
.page { display: none; }
.page.active { display: block; }

/* Page transition */
.page.fade-in {
  animation: pageFadeIn .35s ease forwards;
}
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── TOPBAR ───────────────────────────────────────────────── */
.topbar {
  position: fixed; top: 0; left: 0; width: 100%;
  height: var(--topbar-h);
  background: var(--clr-topbar-bg);
  z-index: 1100;
  display: flex; align-items: center;
  transition: background var(--transition);
}
.topbar-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 1.5rem;
  display: flex; align-items: center; gap: 4rem; width: 100%;
  justify-content: center;
}
.topbar-inner span { display: flex; align-items: center; gap: .4rem; color: var(--clr-topbar-text); font-size: .8rem; font-weight: 500; }
.topbar-inner a { color: var(--clr-topbar-text); transition: color var(--transition); }
.topbar-inner a:hover { color: #fff; }
.topbar-inner i { color: var(--clr-accent); font-size: .8rem; }

/* ── NAVBAR ───────────────────────────────────────────────── */
.navbar {
  position: fixed; top: var(--topbar-h); left: 0; width: 100%;
  height: var(--nav-h);
  background: var(--clr-navbar-bg);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: var(--clr-navbar-scroll);
  border-bottom-color: var(--clr-border);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 2rem;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
  display: flex; align-items: center; gap: .75rem;
  font-family: 'Playfair Display', serif; font-size: 1.15rem;
  font-weight: 700; color: var(--clr-primary-dark); white-space: nowrap;
  transition: color var(--transition), opacity var(--transition);
  flex-shrink: 0; overflow: hidden;
}
.nav-brand span {
  display: inline-block; overflow: hidden;
  transform: translateX(0); opacity: 1; max-width: 200px;
  /* when becoming visible: max-width snaps open instantly, then text slides in */
  transition: max-width 0s 0s, transform .4s ease-out, opacity .35s ease-out;
}
.nav-brand:hover { opacity: .85; }
[data-theme="dark"] .nav-brand { color: var(--clr-primary-light); }
.nav-logo { width: 46px; height: 46px; object-fit: contain; border-radius: 10px; flex-shrink: 0; }
.nav-controls { display: flex; align-items: center; gap: .6rem; margin-left: auto; flex-shrink: 0; }
.nav-menu {
  list-style: none; display: flex; align-items: center; gap: .35rem;
  position: absolute; left: 50%; transform: translateX(-50%);
}
.nav-link {
  display: block; padding: .5rem 1rem;
  font-size: .88rem; font-weight: 500; color: var(--clr-text);
  border-radius: 50px;
  transition: color var(--transition), background var(--transition); white-space: nowrap;
  letter-spacing: .01em;
}
.nav-link:hover, .nav-link.active { color: var(--clr-primary); background: rgba(26,108,122,.1); }
[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active { background: rgba(42,154,172,.15); }
.nav-link.nav-cta {
  background: var(--clr-primary); color: #fff; padding: .5rem 1.4rem;
  border-radius: 50px; margin-left: .25rem; font-weight: 600;
  box-shadow: 0 3px 12px rgba(26,108,122,.28);
}
.nav-link.nav-cta:hover { background: var(--clr-primary-dark); color: #fff; box-shadow: 0 4px 16px rgba(13,74,87,.38); }

/* Theme toggle button */
.theme-toggle {
  width: 38px; height: 38px;
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-text-muted);
  font-size: .95rem;
  box-shadow: var(--shadow-sm);
  transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition);
}
.theme-toggle:hover {
  color: var(--clr-accent);
  border-color: var(--clr-accent);
  background: var(--clr-bg);
  box-shadow: 0 0 0 3px rgba(240,168,50,.2), var(--shadow-sm);
  transform: rotate(22deg) scale(1.05);
}
[data-theme="dark"] .theme-toggle {
  background: var(--clr-surface);
  border-color: var(--clr-border);
  color: #f0c060;
}
[data-theme="dark"] .theme-toggle:hover {
  background: rgba(240,192,96,.08);
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(240,168,50,.18), var(--shadow-sm);
}

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; background: none; border: none; cursor: pointer;
  padding: 6px; border-radius: var(--radius-sm); transition: background var(--transition);
}
.hamburger:hover { background: rgba(26,108,122,.08); }
.hamburger span { display: block; height: 2px; background: var(--clr-text); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ─────────────────────────────────────────────────── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: calc(var(--topbar-h) + var(--nav-h) + 3rem) 1.5rem 5rem;
  background: url('img/paneles2.jpg') center/cover no-repeat;
  overflow: hidden;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(8,20,32,.88) 0%, rgba(13,74,87,.72) 55%, rgba(26,108,122,.5) 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 800px; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: .5rem; font-size: .82rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--clr-accent); margin-bottom: 1.25rem; background: rgba(240,168,50,.1); border: 1px solid rgba(240,168,50,.25); padding: .35rem 1rem; border-radius: 50px; }
.hero-title { font-size: clamp(2.6rem, 6.5vw, 4.8rem); color: #fff; line-height: 1.07; margin-bottom: 1.4rem; font-weight: 700; letter-spacing: -.03em; }
.hero-title em { font-style: italic; color: var(--clr-accent); }
.hero-subtitle { font-size: clamp(1rem, 2vw, 1.2rem); color: rgba(255,255,255,.83); max-width: 600px; margin: 0 auto 2.5rem; font-weight: 400; }
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-scroll-hint { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.5); font-size: 1.2rem; animation: bounce 2s ease-in-out infinite; }
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)} }

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 2rem; border-radius: 50px; font-size: .95rem;
  font-weight: 600; font-family: 'Inter', sans-serif; cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  text-align: center; white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--clr-primary); color: #fff; border-color: var(--clr-primary); }
.btn-primary:hover { background: var(--clr-primary-dark); border-color: var(--clr-primary-dark); box-shadow: 0 6px 20px rgba(13,74,87,.3); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.btn-outline:hover { background: rgba(255,255,255,.1); border-color: #fff; }
.btn-outline-light { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.7); }
.btn-outline-light:hover { background: rgba(255,255,255,.22); color: #fff; border-color: #fff; }

/* ── STATS BAR ────────────────────────────────────────────── */
.stats-bar { background: linear-gradient(135deg, var(--clr-primary-dark) 0%, #0a3d4a 100%); padding: 3rem 1.5rem; }
.stats-bar-inner { max-width: 960px; margin: 0 auto; display: flex; align-items: center; justify-content: center; gap: 0; flex-wrap: wrap; }
.stat-item { display: flex; flex-direction: column; align-items: center; padding: .75rem 3rem; }
.stat-num { font-family: 'Playfair Display', serif; font-size: clamp(2.2rem, 4.5vw, 3rem); font-weight: 700; color: var(--clr-accent); line-height: 1; letter-spacing: -.02em; }
.stat-label { font-size: .8rem; color: rgba(255,255,255,.65); font-weight: 500; margin-top: .45rem; text-align: center; letter-spacing: .06em; text-transform: uppercase; }
.stat-divider { width: 1px; height: 3.5rem; background: rgba(255,255,255,.12); }

/* ── SECTION COMMONS ──────────────────────────────────────── */
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-tag { display: inline-flex; align-items: center; gap: .4rem; font-size: .75rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; color: var(--clr-primary); background: rgba(26,108,122,.1); padding: .35rem 1rem; border-radius: 50px; margin-bottom: .85rem; border: 1px solid rgba(26,108,122,.15); }
[data-theme="dark"] .section-tag { background: rgba(42,154,172,.12); border-color: rgba(42,154,172,.2); }
.section-title { font-size: clamp(1.9rem, 3.5vw, 2.9rem); color: var(--clr-dark); margin-bottom: .85rem; letter-spacing: -.02em; }
.section-subtitle { font-size: 1.05rem; color: var(--clr-text-muted); max-width: 580px; margin: 0 auto; line-height: 1.75; }

/* ── ABOUT ────────────────────────────────────────────────── */
.about-section { padding: var(--section-pad); background: var(--clr-surface); transition: background var(--transition); }
.about-section .section-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.about-text .section-tag { margin-bottom: .6rem; }
.about-text .section-title { margin-bottom: 1.25rem; }
.about-text p { color: var(--clr-text-muted); margin-bottom: 1rem; font-size: 1rem; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.feature-card { background: var(--clr-bg); border: 1px solid var(--clr-border); border-radius: var(--radius-md); padding: 1.6rem; transition: box-shadow var(--transition), transform var(--transition), background var(--transition), border-color var(--transition); }
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); border-color: var(--clr-primary-light); }
.feature-icon { width: 46px; height: 46px; background: linear-gradient(135deg, rgba(26,108,122,.15), rgba(26,108,122,.05)); border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; color: var(--clr-primary); font-size: 1.15rem; }
[data-theme="dark"] .feature-icon { background: linear-gradient(135deg, rgba(42,154,172,.2), rgba(42,154,172,.08)); }
.feature-card h3 { font-family: 'Inter', sans-serif; font-size: .93rem; font-weight: 700; color: var(--clr-text); margin-bottom: .45rem; letter-spacing: .01em; }
.feature-card p { font-size: .84rem; color: var(--clr-text-muted); line-height: 1.65; }

/* ── SERVICES PREVIEW ─────────────────────────────────────── */
.services-preview { padding: var(--section-pad); background: var(--clr-bg); transition: background var(--transition); }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.service-card { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-md); padding: 2rem 1.6rem; display: flex; flex-direction: column; gap: .85rem; transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition), background var(--transition); cursor: pointer; position: relative; overflow: hidden; }
.service-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,108,122,.03) 0%, transparent 60%); opacity: 0; transition: opacity var(--transition); pointer-events: none; }
.service-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-7px); border-color: rgba(26,108,122,.35); }
.service-card:hover::before { opacity: 1; }
.service-card-icon { width: 54px; height: 54px; background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light)); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.35rem; flex-shrink: 0; box-shadow: 0 4px 14px rgba(26,108,122,.25); }
.service-card h3 { font-family: 'Inter', sans-serif; font-size: 1rem; font-weight: 700; color: var(--clr-text); letter-spacing: .01em; }
.service-card p { font-size: .87rem; color: var(--clr-text-muted); line-height: 1.65; flex: 1; }
.service-card-link { font-size: .84rem; font-weight: 600; color: var(--clr-primary); display: flex; align-items: center; gap: .4rem; margin-top: auto; transition: gap var(--transition), color var(--transition); }
.service-card:hover .service-card-link { gap: .75rem; color: var(--clr-primary-dark); }

/* ── GALLERY ──────────────────────────────────────────────── */
.gallery-section { padding: var(--section-pad); background: var(--clr-surface); transition: background var(--transition); }
.gallery-grid { columns: 4; column-gap: .75rem; margin-bottom: 2.5rem; }
.gallery-grid img { width: 100%; margin-bottom: .75rem; border-radius: var(--radius-md); object-fit: cover; transition: transform var(--transition), box-shadow var(--transition), filter var(--transition); break-inside: avoid; }
.gallery-grid img:hover { transform: scale(1.025); box-shadow: var(--shadow-lg); filter: brightness(1.04); }
.gallery-cta { text-align: center; }

/* ── CTA SECTION ──────────────────────────────────────────── */
.cta-section { padding: 6rem 1.5rem; background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 60%, #2a8a9a 100%); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); pointer-events: none; }
.cta-inner { max-width: 700px; margin: 0 auto; text-align: center; position: relative; z-index: 1; }
.cta-inner h2 { font-size: clamp(1.9rem, 3vw, 2.7rem); color: #fff; margin-bottom: 1.1rem; letter-spacing: -.02em; }
.cta-inner p { color: rgba(255,255,255,.82); font-size: 1.08rem; margin-bottom: 2.25rem; line-height: 1.7; }
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── FOOTER ───────────────────────────────────────────────── */
.footer { background: var(--clr-dark); color: rgba(255,255,255,.8); transition: background var(--transition); }
[data-theme="dark"] .footer { background: #050d14; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 5rem 2rem 3rem; display: grid; grid-template-columns: 2fr 1fr 1.5fr; gap: 3.5rem; }
.footer-brand { display: flex; flex-direction: column; gap: .6rem; }
.footer-logo { width: 50px; height: 50px; object-fit: contain; border-radius: 10px; margin-bottom: .35rem; }
.footer-brand p { font-family: 'Playfair Display', serif; font-size: 1.15rem; color: #fff; font-weight: 600; }
.footer-brand span { font-size: .84rem; color: rgba(255,255,255,.45); font-style: italic; line-height: 1.5; }
.footer h4 { font-family: 'Inter', sans-serif; font-size: .75rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.35); margin-bottom: 1.2rem; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: .6rem; }
.footer-links a, .footer-contact a { color: rgba(255,255,255,.65); font-size: .88rem; transition: color var(--transition), padding-left var(--transition); }
.footer-links a:hover, .footer-contact a:hover { color: #fff; padding-left: 4px; }
.footer-contact p { display: flex; align-items: center; gap: .65rem; font-size: .88rem; margin-bottom: .7rem; }
.footer-contact i { color: var(--clr-accent); width: 14px; flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.06); padding: 1.5rem 2rem; text-align: center; }
.footer-bottom p { font-size: .8rem; color: rgba(255,255,255,.3); }

/* ── WHATSAPP FLOAT ───────────────────────────────────────── */
.whatsapp-float { position: fixed; bottom: 2rem; right: 2rem; width: 56px; height: 56px; background: #25D366; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.65rem; box-shadow: 0 4px 20px rgba(37,211,102,.5); z-index: 900; transition: transform var(--transition), box-shadow var(--transition); }
.whatsapp-float:hover { transform: scale(1.12) rotate(-5deg); box-shadow: 0 8px 28px rgba(37,211,102,.65); }

/* ── PAGE HERO (sub-pages) ────────────────────────────────── */
.page-hero { position: relative; padding: calc(var(--topbar-h) + var(--nav-h) + 4rem) 1.5rem 5rem; background: url('img/paneles2.jpg') center/cover no-repeat; text-align: center; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(10,26,40,.80) 0%, rgba(13,74,87,.60) 100%); }
.page-hero-content { position: relative; z-index: 1; }
.page-hero-content .section-tag { margin-bottom: .75rem; }
.page-hero-content h1 { font-size: clamp(2rem, 5vw, 3.5rem); color: #fff; margin-bottom: .75rem; }
.page-hero-content p { color: rgba(255,255,255,.75); font-size: 1.1rem; max-width: 580px; margin: 0 auto; }

/* ── SERVICES PAGE ────────────────────────────────────────── */
.services-section { padding: 5rem 1.5rem; background: var(--clr-bg); transition: background var(--transition); }
.svc-block { display: grid; grid-template-columns: 420px 1fr; gap: 3.5rem; align-items: start; background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 3rem; box-shadow: var(--shadow-sm); transition: box-shadow var(--transition), background var(--transition), border-color var(--transition), transform var(--transition); }
.svc-block:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: rgba(26,108,122,.25); }
.svc-block--reverse { direction: rtl; }
.svc-block--reverse>* { direction: ltr; }
.svc-visual { height: 100%; min-height: 320px; background: var(--clr-border) center/cover no-repeat; }
.svc-img-cal         { background: url('img/serv/cal.webp') center/cover no-repeat; }
.svc-img-aire        { background: url('img/serv/aire.webp') center/cover no-repeat; }
.svc-img-calentador  { background: url('img/serv/calentador.webp') center/cover no-repeat; }
.svc-img-lineas      { background: url('img/serv/linea_gas.webp') center/cover no-repeat; }
.svc-img-obras       { background: url('img/serv/11.webp') center/cover no-repeat; }
.svc-img-gas-natural { background: url('img/serv/aire2.webp') center/cover no-repeat; }
.svc-img-desmontaje  { background: url('img/serv/calentador.webp') center/cover no-repeat; }
.svc-img-asesoramiento  { background: url('img/serv/revision_de_seguridad.webp') center/cover no-repeat; }
.svc-img-certificados   { background: url('img/serv/certificado_de_instalaciones.webp') center/cover no-repeat; }
.svc-body { padding: 2.5rem 2.5rem 2.5rem 0; display: flex; flex-direction: column; gap: 1.25rem; }
.svc-block--reverse .svc-body { padding: 2.5rem 0 2.5rem 2.5rem; }
.svc-tag { display: inline-flex; align-items: center; gap: .4rem; font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--clr-primary); background: rgba(26,108,122,.1); padding: .3rem .8rem; border-radius: 50px; width: fit-content; }
[data-theme="dark"] .svc-tag { background: rgba(42,154,172,.15); }
.svc-body h2 { font-size: clamp(1.4rem, 2.5vw, 1.9rem); color: var(--clr-dark); font-weight: 700; }
.svc-items { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.svc-item { background: var(--clr-bg); border: 1px solid var(--clr-border); border-radius: var(--radius-sm); padding: 1rem; transition: background var(--transition), border-color var(--transition); }
.svc-item h4 { font-family: 'Inter', sans-serif; font-size: .88rem; font-weight: 700; color: var(--clr-primary-dark); margin-bottom: .4rem; }
.svc-item p { font-size: .84rem; color: var(--clr-text-muted); line-height: 1.55; }

/* ── SOLAR PAGE ───────────────────────────────────────────── */
.solar-intro { padding: 5rem 1.5rem; background: var(--clr-surface); transition: background var(--transition); }
.solar-intro-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 4rem; align-items: start; }
.solar-intro-text .section-tag { margin-bottom: .6rem; }
.solar-intro-text .section-title { margin-bottom: 1.25rem; }
.solar-intro-text p { color: var(--clr-text-muted); margin-bottom: 1rem; }
.solar-benefits { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.benefit-card { display: flex; gap: 1rem; align-items: flex-start; padding: 1.1rem; background: var(--clr-bg); border: 1px solid var(--clr-border); border-radius: var(--radius-md); transition: box-shadow var(--transition), transform var(--transition), background var(--transition), border-color var(--transition); }
.benefit-card:hover { box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.benefit-icon { width: 36px; height: 36px; flex-shrink: 0; background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light)); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: .9rem; }
.benefit-card h4 { font-family: 'Inter', sans-serif; font-size: .9rem; font-weight: 700; color: var(--clr-text); margin-bottom: .3rem; }
.benefit-card p { font-size: .82rem; color: var(--clr-text-muted); line-height: 1.55; }

/* ── CONTACT PAGE ─────────────────────────────────────────── */
.contact-section { padding: 5rem 1.5rem; background: var(--clr-bg); transition: background var(--transition); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 3.5rem; align-items: start; }
.contact-sidebar h2, .contact-form-wrap h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); color: var(--clr-dark); margin-bottom: .75rem; }
.contact-intro { color: var(--clr-text-muted); font-size: .95rem; margin-bottom: 2rem; }
.contact-cards { display: flex; flex-direction: column; gap: 1rem; }
.contact-card { display: flex; gap: 1rem; align-items: flex-start; background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-md); padding: 1.3rem; transition: box-shadow var(--transition), background var(--transition), border-color var(--transition), transform var(--transition); }
.contact-card:hover { box-shadow: var(--shadow-sm); transform: translateX(4px); border-color: rgba(26,108,122,.2); }
.contact-card-icon { width: 40px; height: 40px; flex-shrink: 0; background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light)); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1rem; }
.contact-card h4 { font-family: 'Inter', sans-serif; font-size: .82rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--clr-text-muted); margin-bottom: .3rem; }
.contact-card a, .contact-card span { display: block; font-size: .95rem; color: var(--clr-text); transition: color var(--transition); }
.contact-card a:hover { color: var(--clr-primary); }
.contact-form-wrap { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow-sm); transition: background var(--transition), border-color var(--transition); }
.contact-form-wrap>p { color: var(--clr-text-muted); margin-bottom: 2rem; font-size: .95rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--clr-text); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: .75rem 1rem; font-size: .95rem; font-family: 'Inter', sans-serif; color: var(--clr-text); background: var(--clr-bg); border: 1.5px solid var(--clr-border); border-radius: var(--radius-sm); outline: none; transition: border-color var(--transition), box-shadow var(--transition), background var(--transition); resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--clr-primary); box-shadow: 0 0 0 3px rgba(26,108,122,.15); background: var(--clr-surface); }
.form-group input::placeholder, .form-group textarea::placeholder { color: #aab8bf; }
[data-theme="dark"] .form-group input::placeholder, [data-theme="dark"] .form-group textarea::placeholder { color: #3a5a6a; }
.btn-full { width: 100%; justify-content: center; padding: .9rem; font-size: 1rem; }
.form-legal { font-size: .78rem; color: var(--clr-text-muted); text-align: center; line-height: 1.5; }

/* ── FAQ PAGE ─────────────────────────────────────────────── */
.faq-section { padding: 4rem 1.5rem 5rem; background: var(--clr-bg); transition: background var(--transition); }
.faq-categories { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2.5rem; }
.faq-cat { padding: .45rem 1.25rem; font-size: .82rem; font-weight: 600; font-family: 'Inter', sans-serif; border: 1.5px solid var(--clr-border); border-radius: 50px; background: var(--clr-surface); color: var(--clr-text-muted); cursor: pointer; transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition); }
.faq-cat:hover { border-color: var(--clr-primary); color: var(--clr-primary); background: rgba(26,108,122,.05); }
.faq-cat.active { background: var(--clr-primary); color: #fff; border-color: var(--clr-primary); box-shadow: 0 3px 10px rgba(26,108,122,.25); }
.faq-list { display: flex; flex-direction: column; gap: .6rem; margin-bottom: 3rem; }
.faq-item { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-md); overflow: hidden; transition: box-shadow var(--transition), background var(--transition), border-color var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-sm); border-color: rgba(26,108,122,.2); }
.faq-item.faq-hidden { display: none; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.25rem 1.5rem; background: none; border: none; cursor: pointer; text-align: left; font-family: 'Inter', sans-serif; font-size: .97rem; font-weight: 600; color: var(--clr-text); transition: color var(--transition), background var(--transition); }
.faq-question:hover { color: var(--clr-primary); background: rgba(26,108,122,.03); }
[data-theme="dark"] .faq-question:hover { background: rgba(42,154,172,.05); }
.faq-question[aria-expanded="true"] { color: var(--clr-primary); }
.faq-question i { flex-shrink: 0; font-size: .75rem; color: var(--clr-text-muted); transition: transform var(--transition), color var(--transition); }
.faq-question[aria-expanded="true"] i { transform: rotate(180deg); color: var(--clr-primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s cubic-bezier(.4,0,.2,1), padding .3s ease; padding: 0 1.5rem; }
.faq-answer.open { max-height: 400px; padding: 0 1.5rem 1.25rem; }
.faq-answer p { color: var(--clr-text-muted); font-size: .93rem; line-height: 1.7; border-top: 1px solid var(--clr-border); padding-top: 1rem; }
.faq-cta { background: linear-gradient(135deg, rgba(26,108,122,.08), rgba(240,168,50,.08)); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: 2rem 2.5rem; }
[data-theme="dark"] .faq-cta { background: linear-gradient(135deg, rgba(42,154,172,.1), rgba(240,168,50,.07)); }
.faq-cta-inner { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.faq-cta-inner>i { font-size: 2.5rem; color: var(--clr-primary); flex-shrink: 0; }
.faq-cta-inner>div { flex: 1; }
.faq-cta-inner h3 { font-family: 'Inter', sans-serif; font-size: 1.1rem; font-weight: 700; color: var(--clr-text); margin-bottom: .3rem; }
.faq-cta-inner p { font-size: .9rem; color: var(--clr-text-muted); }

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 1100px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid  { columns: 3; }
}
@media (max-width: 1050px) and (min-width: 769px) {
  .nav-brand span {
    transform: translateX(-100%); opacity: 0; max-width: 0;
    /* text slides+fades out first (.35s), then max-width snaps to 0 instantly (already invisible) */
    transition: transform .35s ease-in, opacity .3s ease-in, max-width 0s .36s;
  }
}
@media (max-width: 960px) {
  .svc-block { grid-template-columns: 1fr; }
  .svc-block--reverse { direction: ltr; }
  .svc-visual { min-height: 240px; }
  .svc-body, .svc-block--reverse .svc-body { padding: 2rem 1.5rem; }
}
@media (max-width: 900px) {
  .about-section .section-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .solar-intro-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .stat-divider { display: none; }
  .stat-item { padding: .75rem 1.5rem; }
}
@media (max-width: 768px) {
  .topbar { display: none; }
  .navbar { top: 0; }
  .hero { padding-top: calc(var(--nav-h) + 2rem); }
  .page-hero { padding-top: calc(var(--nav-h) + 4rem); }
  .hamburger { display: flex; }
  .nav-menu {
    position: fixed; top: var(--nav-h); left: 0; width: 100%;
    background: var(--clr-surface); flex-direction: column; align-items: stretch;
    padding: 1.25rem 1.5rem 2.5rem; gap: .3rem;
    box-shadow: var(--shadow-lg); border-top: 1px solid var(--clr-border);
    transform: translateY(-110%); opacity: 0;
    transition: transform .35s cubic-bezier(.4,0,.2,1), opacity .3s ease;
    pointer-events: none; z-index: 999;
  }
  .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { padding: .8rem 1.1rem; font-size: .96rem; border-radius: var(--radius-sm); }
  .nav-link.nav-cta { margin: .75rem 0 0; text-align: center; border-radius: var(--radius-sm); }
  .services-grid { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: 1fr; }
  .gallery-grid { columns: 2; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; padding: 3rem 1.5rem 1.5rem; }
}
@media (max-width: 640px) {
  .faq-cta-inner { flex-direction: column; text-align: center; }
  .faq-cta-inner>i { font-size: 2rem; }
  .faq-cta { padding: 1.5rem; }
  .faq-question { padding: 1rem 1.1rem; font-size: .9rem; }
}
@media (max-width: 600px) {
  .svc-items { grid-template-columns: 1fr; }
  .svc-body, .svc-block--reverse .svc-body { padding: 1.5rem; }
  .solar-benefits { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 1.5rem; }
}
@media (max-width: 480px) {
  .gallery-grid { columns: 1; }
  .hero-actions { flex-direction: column; align-items: center; }
  .cta-actions  { flex-direction: column; align-items: center; }
  .stats-bar-inner { gap: 0; }
  .stat-item { padding: .5rem 1rem; }
}