/* ============================================
   CONSTRUCTORA HBL — Design System
   Dark Luxury Theme with Gold Accents
   + Light Theme, Text Scrubbing, Micro-animations
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&display=swap');

/* ===== THEME VARIABLES ===== */
:root,
[data-theme="dark"] {
  --bg-primary: #0a1628;
  --bg-secondary: #0d1f35;
  --bg-tertiary: #1a2d4a;
  --accent-gold: #caaf87;
  --accent-gold-light: #d4b896;
  --accent-gold-glow: rgba(202, 175, 135, 0.25);
  --text-primary: #ffffff;
  --text-secondary: #8a9bb5;
  --text-muted: #5a6b82;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-gold: rgba(202, 175, 135, 0.3);
  --glass-bg: rgba(10, 22, 40, 0.82);
  --glass-border: rgba(255, 255, 255, 0.1);
  --shadow-xl: 0 25px 60px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 0 40px rgba(202, 175, 135, 0.15);
  --footer-bg: #060e1a;
  --logo-filter: brightness(0) invert(1);
  --map-filter: grayscale(0.8) brightness(0.7) contrast(1.2);
  --map-filter-hover: grayscale(0) brightness(0.9);
  --hero-overlay-start: rgba(10,22,40,0.7);
  --hero-overlay-mid: rgba(10,22,40,0.5);
  --hero-overlay-end: rgba(10,22,40,0.85);
}

[data-theme="light"] {
  --bg-primary: #f5f2ed;
  --bg-secondary: #ece7df;
  --bg-tertiary: #e2dcd3;
  --accent-gold: #9a7b4f;
  --accent-gold-light: #b08d5a;
  --accent-gold-glow: rgba(154, 123, 79, 0.18);
  --text-primary: #1a1a1a;
  --text-secondary: #5a5a5a;
  --text-muted: #8a8a8a;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-gold: rgba(154, 123, 79, 0.3);
  --glass-bg: rgba(245, 242, 237, 0.88);
  --glass-border: rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 25px 60px rgba(0, 0, 0, 0.12);
  --shadow-gold: 0 0 40px rgba(154, 123, 79, 0.12);
  --footer-bg: #e2dcd3;
  --logo-filter: none;
  --map-filter: grayscale(0.2) brightness(1) contrast(1);
  --map-filter-hover: grayscale(0) brightness(1);
  --hero-overlay-start: rgba(245,242,237,0.65);
  --hero-overlay-mid: rgba(245,242,237,0.4);
  --hero-overlay-end: rgba(245,242,237,0.85);
}

/* Smooth theme transition on all relevant properties */
body, #navbar, #navbar.scrolled, .nav-menu,
section, footer, .contacto-form, .proyecto-card,
.cifra-item, .value-item, .contacto-info-item,
.alianza-item, .footer-social a, .btn-submit,
.contacto-map iframe {
  transition: background-color 0.6s ease, color 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease;
}

/* ===== GLOBAL ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: 'Inter', sans-serif; background-color: var(--bg-primary); color: var(--text-secondary); line-height: 1.7; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
ul { list-style: none; }
::selection { background: var(--accent-gold); color: var(--bg-primary); }

h1, h2, h3, h4, h5, h6 { font-family: 'Outfit', sans-serif; color: var(--text-primary); line-height: 1.15; font-weight: 700; }

.section-label { font-family: 'Inter', sans-serif; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.3em; text-transform: uppercase; color: var(--accent-gold); margin-bottom: 1rem; display: flex; align-items: center; gap: 0.75rem; }
.section-label::before { content: ''; width: 40px; height: 2px; background: var(--accent-gold); display: inline-block; }
.section-title { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: -0.02em; }
.section-title .gold { color: var(--accent-gold); }
.section-desc { font-size: 1rem; color: var(--text-secondary); max-width: 600px; line-height: 1.8; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
section { padding: 8rem 0; position: relative; }

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  position: fixed;
  top: 1.25rem;
  right: 5rem;
  z-index: 1001;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--border-gold);
  border-radius: 50%;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-gold);
}
.theme-icon-light, .theme-icon-dark {
  position: absolute;
  font-size: 1rem;
  color: var(--accent-gold);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
[data-theme="dark"] .theme-icon-dark { opacity: 1; transform: rotate(0deg); }
[data-theme="dark"] .theme-icon-light { opacity: 0; transform: rotate(-90deg); }
[data-theme="light"] .theme-icon-light { opacity: 1; transform: rotate(0deg); }
[data-theme="light"] .theme-icon-dark { opacity: 0; transform: rotate(90deg); }

/* ===== WHATSAPP FLOATING ===== */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  animation: whatsapp-pulse 2s infinite;
}
.whatsapp-float:hover {
  transform: scale(1.12);
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.55);
}
.whatsapp-tooltip {
  position: absolute;
  right: 72px;
  background: #fff;
  color: #333;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  opacity: 0;
  pointer-events: none;
  transform: translateX(10px);
  transition: all 0.3s ease;
}
.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: #fff;
}
.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
  transform: translateX(0);
}
@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 6px 24px rgba(37, 211, 102, 0.15), 0 0 0 12px rgba(37, 211, 102, 0.08); }
}

/* ===== TEXT SCRUBBING ===== */
.text-scrub .word {
  display: inline-block;
  white-space: nowrap;
}
.text-scrub .char {
  display: inline-block;
  opacity: 0.15;
  transition: opacity 0.4s ease, color 0.4s ease;
}
.text-scrub .char.active {
  opacity: 1;
}

/* ===== LOTTIE MICRO-ANIMATIONS ===== */
.lottie-icon {
  width: 28px;
  height: 28px;
}
.value-icon .lottie-icon svg {
  width: 100%;
  height: 100%;
}
/* SVG icon animation - draw stroke on scroll reveal */
.value-icon svg path,
.value-icon svg line,
.value-icon svg circle,
.value-icon svg polyline,
.value-icon svg rect {
  stroke: var(--accent-gold);
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  transition: stroke-dashoffset 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.value-item.active .value-icon svg path,
.value-item.active .value-icon svg line,
.value-item.active .value-icon svg circle,
.value-item.active .value-icon svg polyline,
.value-item.active .value-icon svg rect {
  stroke-dashoffset: 0;
}

/* ===== NAVBAR ===== */
#navbar { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; padding: 1.25rem 0; transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
#navbar.scrolled { background: var(--glass-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--glass-border); padding: 0.75rem 0; box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
.nav-inner { display: flex; justify-content: space-between; align-items: center; }
.nav-logo { display: flex; align-items: center; gap: 0.75rem; }
.nav-logo img { height: 45px; width: auto; filter: var(--logo-filter); transition: all 0.4s ease; }
#navbar.scrolled .nav-logo img { height: 38px; }
.nav-menu { display: flex; align-items: center; gap: 2.5rem; }
.nav-menu a { font-family: 'Inter', sans-serif; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-primary); position: relative; padding: 0.5rem 0; }
.nav-menu a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--accent-gold); transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.nav-menu a:hover::after { width: 100%; }
.nav-menu a:hover { color: var(--accent-gold); }
.nav-cta { padding: 0.6rem 1.5rem !important; background: transparent; border: 1.5px solid var(--accent-gold) !important; border-radius: 50px; color: var(--accent-gold) !important; font-weight: 700 !important; letter-spacing: 0.1em; transition: all 0.4s ease; }
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--accent-gold) !important; color: var(--bg-primary) !important; box-shadow: var(--shadow-gold); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 5px; z-index: 1001; }
.nav-toggle span { width: 28px; height: 2px; background: var(--text-primary); transition: all 0.4s ease; border-radius: 2px; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== HERO ===== */
#hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; padding: 0; }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img, .hero-bg video { width: 100%; height: 100%; object-fit: cover; transform: scale(1.1); transition: transform 0.1s linear; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, var(--hero-overlay-start) 0%, var(--hero-overlay-mid) 40%, var(--hero-overlay-end) 100%); z-index: 1; }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 900px; padding: 0 2rem; }
.hero-badge { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1.25rem; border: 1px solid var(--border-gold); border-radius: 50px; font-size: 0.65rem; font-weight: 700; letter-spacing: 0.25em; text-transform: uppercase; color: var(--accent-gold); margin-bottom: 2rem; backdrop-filter: blur(10px); background: rgba(202,175,135,0.08); }
.hero-badge i { font-size: 0.55rem; }
.hero-title { font-size: clamp(2.5rem, 8vw, 7rem); font-weight: 900; line-height: 1; text-transform: uppercase; letter-spacing: -0.03em; margin-bottom: 1.5rem; color: var(--text-primary); word-break: keep-all; overflow-wrap: normal; }
.hero-title .gold { color: var(--accent-gold); }
.hero-subtitle { font-size: clamp(0.9rem, 2vw, 1.1rem); color: var(--text-secondary); max-width: 600px; margin: 0 auto 2.5rem; line-height: 1.8; }
.hero-cta-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.9rem 2rem; border-radius: 50px; font-family: 'Outfit', sans-serif; font-size: 0.75rem; font-weight: 800; letter-spacing: 0.15em; text-transform: uppercase; transition: all 0.4s ease; cursor: pointer; border: none; }
.btn-gold { background: var(--accent-gold); color: var(--bg-primary); }
.btn-gold:hover { background: var(--accent-gold-light); transform: translateY(-3px); box-shadow: var(--shadow-gold); }
.btn-outline { background: transparent; border: 1.5px solid var(--text-primary); color: var(--text-primary); }
.btn-outline:hover { background: var(--text-primary); color: var(--bg-primary); transform: translateY(-3px); }
.hero-scroll { position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%); z-index: 2; text-align: center; font-size: 0.6rem; font-weight: 700; letter-spacing: 0.3em; text-transform: uppercase; color: var(--text-muted); }
.hero-scroll .line { width: 1px; height: 50px; background: linear-gradient(180deg, var(--accent-gold) 0%, transparent 100%); margin: 1rem auto 0; animation: scrollLine 2s infinite; }
@keyframes scrollLine { 0%, 100% { opacity: 1; transform: scaleY(1); } 50% { opacity: 0.3; transform: scaleY(0.5); } }

/* ===== NOSOTROS ===== */
#nosotros { background: var(--bg-secondary); }
.nosotros-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.nosotros-image { position: relative; border-radius: 24px; overflow: hidden; }
.nosotros-image::after { content: ''; position: absolute; inset: 0; border-radius: 24px; border: 1px solid var(--border-gold); pointer-events: none; }
.nosotros-image img { width: 100%; height: 450px; object-fit: cover; }
.nosotros-text p { margin-bottom: 1.5rem; }
.values-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 2rem; }
.value-item { display: flex; align-items: flex-start; gap: 1rem; padding: 1.25rem; border-radius: 16px; border: 1px solid var(--border-subtle); transition: all 0.4s ease; }
.value-item:hover { border-color: var(--border-gold); background: rgba(202,175,135,0.04); }
.value-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--accent-gold-glow); display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--accent-gold); font-size: 1.1rem; }
.value-item h4 { font-size: 0.85rem; margin-bottom: 0.25rem; }
.value-item p { font-size: 0.75rem; color: var(--text-muted); line-height: 1.5; }

/* ===== CIFRAS ===== */
#cifras { background: var(--bg-primary); }
.cifras-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 2rem; }
.cifra-item { text-align: center; padding: 2.5rem 1.5rem; border-radius: 24px; border: 1px solid var(--border-subtle); transition: all 0.4s ease; }
.cifra-item:hover { border-color: var(--border-gold); transform: translateY(-5px); box-shadow: var(--shadow-gold); }
.cifra-number { font-family: 'Outfit', sans-serif; font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 900; color: var(--accent-gold); margin-bottom: 0.5rem; }
.cifra-label { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); }

/* ===== PROYECTOS ===== */
#proyectos { background: var(--bg-secondary); }
.proyecto-destacado { display: grid; grid-template-columns: 1.2fr 1fr; border-radius: 32px; overflow: hidden; border: 1px solid var(--border-subtle); margin-bottom: 3rem; background: var(--bg-tertiary); }
.proyecto-img { position: relative; min-height: 400px; overflow: hidden; }
.proyecto-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.proyecto-destacado:hover .proyecto-img img { transform: scale(1.05); }
.proyecto-badge { position: absolute; top: 1.5rem; left: 1.5rem; padding: 0.5rem 1rem; background: var(--accent-gold); color: var(--bg-primary); font-size: 0.6rem; font-weight: 800; letter-spacing: 0.15em; text-transform: uppercase; border-radius: 50px; }
.proyecto-info { padding: 3rem; display: flex; flex-direction: column; justify-content: center; }
.proyecto-logo { margin-bottom: 1rem; }
.proyecto-info h3 { font-size: 1.5rem; margin-bottom: 1rem; }
.proyecto-info p { margin-bottom: 1.5rem; font-size: 0.9rem; line-height: 1.8; }
.proyecto-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 2rem; }
.proyecto-stat { padding: 1rem; background: rgba(202,175,135,0.06); border-radius: 12px; border: 1px solid var(--border-subtle); }
.stat-num { font-family: 'Outfit', sans-serif; font-size: 1.1rem; font-weight: 800; color: var(--accent-gold); white-space: nowrap; }
.stat-label { font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 0.25rem; }
.proyectos-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.proyecto-card { border-radius: 24px; overflow: hidden; border: 1px solid var(--border-subtle); background: var(--bg-tertiary); transition: all 0.4s ease; position: relative; }
.proyecto-card:hover { transform: translateY(-8px); border-color: var(--border-gold); box-shadow: var(--shadow-gold); }
.proyecto-card-img { height: 200px; overflow: hidden; }
.proyecto-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.proyecto-card:hover .proyecto-card-img img { transform: scale(1.1); }
.proyecto-card-body { padding: 1.5rem; }
.proyecto-card-body h4 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.proyecto-card-body p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; }
.proyecto-card-tag { display: inline-block; padding: 0.25rem 0.75rem; background: var(--accent-gold-glow); color: var(--accent-gold); font-size: 0.6rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; border-radius: 50px; margin-bottom: 0.75rem; }

/* ===== ALIANZAS ===== */
#alianzas { background: var(--bg-primary); text-align: center; }
.alianzas-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 3rem; margin-top: 3rem; align-items: center; }
.alianza-item { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; transition: all 0.4s ease; padding: 1.5rem 2rem; border-radius: 16px; }
.alianza-item:hover { background: rgba(255,255,255,0.03); transform: scale(1.1); }
.alianza-item img { height: 110px; width: auto; object-fit: contain; filter: var(--logo-filter); opacity: 0.5; transition: all 0.4s ease; }
.alianza-item:hover img { opacity: 1; }
.alianza-item span { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); }

/* Light theme: dont invert logos */
[data-theme="light"] .alianza-item img { filter: none; opacity: 0.6; }
[data-theme="light"] .alianza-item:hover img { opacity: 1; }
[data-theme="light"] .nav-logo img { filter: none; }
[data-theme="light"] .footer-brand img { filter: none; }

/* ===== CONTACTO ===== */
#contacto { background: var(--bg-secondary); }
.contacto-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.contacto-form { padding: 2.5rem; background: var(--bg-tertiary); border-radius: 32px; border: 1px solid var(--border-subtle); }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.5rem; }
.form-group input, .form-group textarea { width: 100%; padding: 0.9rem 0; background: transparent; border: none; border-bottom: 1.5px solid var(--border-subtle); color: var(--text-primary); font-family: 'Inter', sans-serif; font-size: 0.9rem; transition: all 0.4s ease; outline: none; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent-gold); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group textarea { resize: vertical; min-height: 100px; }
.btn-submit { width: 100%; padding: 1.1rem; background: var(--accent-gold); color: var(--bg-primary); font-family: 'Outfit', sans-serif; font-size: 0.85rem; font-weight: 800; letter-spacing: 0.2em; text-transform: uppercase; border: none; border-radius: 50px; cursor: pointer; transition: all 0.4s ease; margin-top: 0.5rem; }
.btn-submit:hover { background: var(--accent-gold-light); transform: translateY(-2px); box-shadow: var(--shadow-gold); }
.contacto-info { display: flex; flex-direction: column; gap: 2rem; }
.contacto-info-item { display: flex; align-items: flex-start; gap: 1.25rem; padding: 1.5rem; border-radius: 16px; border: 1px solid var(--border-subtle); transition: all 0.4s ease; }
.contacto-info-item:hover { border-color: var(--border-gold); }
.contacto-info-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--accent-gold-glow); display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--accent-gold); font-size: 1.1rem; }
.contacto-info-item h4 { font-size: 0.9rem; margin-bottom: 0.3rem; }
.contacto-info-item p { font-size: 0.85rem; color: var(--text-muted); }
.contacto-info-item a:hover { color: var(--accent-gold); }
.contacto-map { border-radius: 24px; overflow: hidden; border: 1px solid var(--border-subtle); height: 220px; }
.contacto-map iframe { width: 100%; height: 100%; border: 0; filter: var(--map-filter); transition: all 0.4s ease; }
.contacto-map:hover iframe { filter: var(--map-filter-hover); }

/* ===== FOOTER ===== */
#footer { background: var(--footer-bg); padding: 4rem 0 2rem; border-top: 1px solid var(--border-subtle); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand img { height: 45px; filter: var(--logo-filter); margin-bottom: 1rem; }
.footer-brand p { font-size: 0.85rem; color: var(--text-muted); max-width: 300px; line-height: 1.7; }
.footer-links h5 { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent-gold); margin-bottom: 1.25rem; }
.footer-links a { display: block; font-size: 0.85rem; color: var(--text-muted); padding: 0.3rem 0; transition: all 0.4s ease; }
.footer-links a:hover { color: var(--text-primary); padding-left: 0.5rem; }
.footer-social { display: flex; gap: 0.75rem; margin-top: 1.5rem; }
.footer-social a { width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--border-subtle); display: flex; align-items: center; justify-content: center; color: var(--text-muted); transition: all 0.4s ease; }
.footer-social a:hover { border-color: var(--accent-gold); color: var(--accent-gold); background: var(--accent-gold-glow); }
.footer-bottom { border-top: 1px solid var(--border-subtle); padding-top: 2rem; display: flex; justify-content: space-between; align-items: center; font-size: 0.75rem; color: var(--text-muted); }

/* ===== ANIMATIONS ===== */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-60px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-left.active { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(60px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-right.active { opacity: 1; transform: translateX(0); }
.stagger > * { transition-delay: calc(var(--i, 0) * 0.1s); }

/* ===== RESPONSIVE ===== */

/* Large tablets / small desktops */
@media (max-width: 1024px) {
  .nosotros-grid, .contacto-grid { grid-template-columns: 1fr; gap: 3rem; }
  .proyecto-destacado { grid-template-columns: 1fr; }
  .proyecto-img { min-height: 300px; }
  .proyectos-grid { grid-template-columns: 1fr 1fr; }
  .cifras-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .theme-toggle { right: 4.5rem; }
}

/* Tablets */
@media (max-width: 768px) {
  section { padding: 5rem 0; }
  .nav-menu {
    position: fixed; top: 0; right: -100%; width: 80%; max-width: 320px; height: 100vh;
    background: var(--bg-primary); flex-direction: column; justify-content: center;
    align-items: center; gap: 2rem; transition: all 0.4s ease;
    border-left: 1px solid var(--border-subtle);
  }
  .nav-menu.open { right: 0; }
  .nav-toggle { display: flex; position: relative; z-index: 1002; margin-right: 0.25rem; }
  .theme-toggle { right: 4.5rem; top: 1.1rem; width: 38px; height: 38px; }
  .hero-title { font-size: clamp(2rem, 10vw, 3.5rem); }
  .nosotros-image img { height: 350px; }
  .values-grid { grid-template-columns: 1fr; }
  .cifras-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .cifra-item { padding: 1.5rem 1rem; }
  .proyectos-grid { grid-template-columns: 1fr; }
  .proyecto-info { padding: 2rem; }
  .proyecto-stats { grid-template-columns: 1fr 1fr; }
  .alianzas-grid { gap: 1.5rem; }
  .alianza-item { padding: 1rem; }
  .alianza-item img { height: 70px; }
  .contacto-form { padding: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .whatsapp-float { width: 52px; height: 52px; font-size: 1.5rem; bottom: 1.5rem; right: 1.5rem; }
}

/* Small phones */
@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  section { padding: 4rem 0; }
  .hero-cta-group { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .proyecto-stats { grid-template-columns: 1fr; }
  .proyecto-info { padding: 1.5rem; }
  .proyecto-info h3 { font-size: 1.2rem; }
  .cifras-grid { grid-template-columns: 1fr; }
  .cifra-item { padding: 1.5rem 1rem; }
  .cifra-number { font-size: 1.8rem; }
  .alianza-item img { height: 55px; }
  .alianzas-grid { gap: 1rem; }
  .contacto-grid { gap: 2rem; }
  .contacto-info-item { padding: 1rem; gap: 1rem; }
  .contacto-info-icon { width: 40px; height: 40px; font-size: 0.9rem; }
  .hero-badge { font-size: 0.55rem; padding: 0.4rem 0.8rem; }
  .hero-title { font-size: 2.2rem; line-height: 1.05; }
  .section-title { font-size: clamp(1.5rem, 7vw, 2.2rem); }
  .theme-toggle { right: 3.5rem; top: 1rem; width: 36px; height: 36px; }
  .whatsapp-float { width: 48px; height: 48px; font-size: 1.3rem; bottom: 1.25rem; right: 1.25rem; }
  .whatsapp-tooltip { display: none; }
}

/* Very small phones (iPhone SE, Galaxy Fold, etc.) */
@media (max-width: 360px) {
  .container { padding: 0 1rem; }
  .hero-title { font-size: 1.8rem; line-height: 1.1; }
  .hero-subtitle { font-size: 0.8rem; }
  .hero-badge { font-size: 0.5rem; letter-spacing: 0.15em; }
  .section-title { font-size: 1.4rem; }
  .nosotros-image img { height: 250px; }
  .proyecto-img { min-height: 200px; }
  .footer-brand p { font-size: 0.75rem; }
}

/* Landscape phones */
@media (max-height: 500px) and (orientation: landscape) {
  #hero { min-height: auto; padding: 6rem 0 3rem; }
  .hero-title { font-size: 2.5rem; }
  .hero-scroll { display: none; }
}