/* =========================================
   CHISCO SOLAR ENTERPRISE – PREMIUM STYLE
   ========================================= */

/* Google Fonts: elegant heading + clean body */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@500;600;700;800&family=Outfit:wght@300;400;500;600;700&display=swap');

/* Custom Properties */
:root {
  --bg-deep: #060b18;
  --bg-card: #0e1326;
  --bg-section: #080e1f;
  --text-primary: #f0f0f0;
  --text-muted: #9aa0b8;
  --accent: #f5a623;         /* solar amber */
  --accent-glow: #f7b94e;
  --accent-dark: #c47e0a;
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Outfit', sans-serif;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --overlay-dark: rgba(6, 11, 24, 0.7);
  --section-padding: 100px 20px;
  --border-radius: 6px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: #fff;
}

h2 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  margin-bottom: 0.8rem;
}

.section-label {
  text-transform: uppercase;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 1rem;
  display: inline-block;
  border-bottom: 2px solid rgba(245,166,35,0.3);
  padding-bottom: 0.3rem;
}

/* ---------- NAVIGATION ---------- */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
  background-color: transparent;
}

.navbar.scrolled {
  background-color: rgba(6, 11, 24, 0.95);
  padding: 1rem 3rem;
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  color: #ccc;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  position: relative;
  transition: color var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  border: 2px solid var(--accent);
  padding: 0.6rem 1.8rem;
  color: var(--accent) !important;
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
}

.nav-cta:hover {
  background: var(--accent);
  color: #060b18 !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 28px;
  height: 2px;
  background: #fff;
  transition: var(--transition);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 0.9rem 2.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #060b18;
  border: 2px solid var(--accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 2px solid #fff;
  color: #fff;
}

.btn-outline:hover {
  background: #fff;
  color: #060b18;
  transform: translateY(-2px);
}

/* ---------- HERO ---------- */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 5%;
  background: url('https://images.unsplash.com/photo-1509391366360-2e959784a276?w=1200&q=80') center/cover no-repeat;
  background-attachment: fixed;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: var(--overlay-dark);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  opacity: 0;
  transform: translateY(40px);
  animation: fadeUpHero 1s 0.3s forwards;
}

@keyframes fadeUpHero {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content .label {
  text-transform: uppercase;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero-content h1 {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-content p {
  font-size: 1.2rem;
  color: #d0d4e0;
  max-width: 500px;
  margin-bottom: 2.5rem;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* ---------- SECTIONS ---------- */
.section {
  padding: var(--section-padding);
  max-width: 1300px;
  margin: 0 auto;
}

/* 3D Card effect */
.card-3d {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  padding: 2rem;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  transform: perspective(800px) rotateY(0deg) rotateX(0deg);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.card-3d:hover {
  transform: perspective(800px) rotateY(2deg) rotateX(2deg) translateY(-5px);
  box-shadow: 0 20px 40px rgba(245,166,35,0.15);
}

/* About teaser grid */
.about-teaser {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-teaser .content p {
  color: var(--text-muted);
  margin-bottom: 1.8rem;
}

.image-wrapper {
  border-radius: var(--border-radius);
  overflow: hidden;
}

.image-wrapper img {
  width: 100%;
  display: block;
  transition: transform 0.4s ease;
}

.image-wrapper:hover img {
  transform: scale(1.03);
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.service-card {
  background: var(--bg-card);
  padding: 2.5rem 2rem;
  border-radius: var(--border-radius);
  text-align: center;
  transition: all var(--transition);
  border-bottom: 3px solid transparent;
}

.service-card:hover {
  border-bottom-color: var(--accent);
  transform: translateY(-8px);
  box-shadow: 0 15px 35px rgba(245,166,35,0.1);
}

.service-card .icon {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
}

.service-card p {
  color: var(--text-muted);
}

/* Project Gallery */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.project-item {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.project-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-item:hover img {
  transform: scale(1.08);
}

.project-item .caption {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.2rem;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  color: #fff;
  font-weight: 600;
  opacity: 0;
  transition: opacity var(--transition);
}

.project-item:hover .caption {
  opacity: 1;
}

/* Testimonials */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.testimonial-card {
  background: var(--bg-card);
  padding: 2.5rem 2rem;
  border-radius: var(--border-radius);
  border-left: 4px solid var(--accent);
  transition: transform var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-5px);
}

.testimonial-card p {
  font-style: italic;
  color: #ccc;
  margin-bottom: 1.5rem;
}

.testimonial-card h4 {
  color: var(--accent);
  font-family: var(--font-body);
  font-weight: 600;
}

/* CTA */
.cta-section {
  text-align: center;
}

.cta-section h2 {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
}

/* Page header */
.page-header {
  padding: 160px 5% 80px;
  text-align: center;
  background: var(--bg-section);
}

.page-header h1 {
  font-size: clamp(2.8rem, 5vw, 4.2rem);
}

.breadcrumb {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 0.5rem;
}

/* Form Styles */
.form-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--bg-card);
  padding: 3rem;
  border-radius: var(--border-radius);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: #ccc;
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.9rem 1rem;
  background: #12172b;
  border: 1px solid #2a3050;
  color: #fff;
  font-family: var(--font-body);
  border-radius: 4px;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}

.form-submit {
  width: 100%;
  padding: 1rem;
  background: var(--accent);
  color: #060b18;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}

.form-submit:hover {
  background: #f8b84e;
}

/* Confirmation message */
.confirmation {
  display: none;
  text-align: center;
  padding: 3rem;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--border-radius);
}

.confirmation.show {
  display: block;
}

.confirmation i {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

/* Footer */
.footer {
  background: #030711;
  padding: 3rem 5%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-col h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.footer-col p, .footer-col a {
  color: #999;
  text-decoration: none;
  font-size: 0.95rem;
  display: block;
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid #1a1f35;
  padding: 1.5rem 5%;
  text-align: center;
  color: #777;
  font-size: 0.9rem;
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Loader (homepage only) */
.loader {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: #060b18;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hide {
  opacity: 0;
  visibility: hidden;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(245,166,35,0.3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 992px) {
  .navbar {
    padding: 1.5rem 2rem;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 70%;
    max-width: 300px;
    background: #060b18;
    flex-direction: column;
    padding: 6rem 2rem;
    gap: 2rem;
    transition: right var(--transition);
  }
  .nav-links.active {
    right: 0;
  }
  .hamburger {
    display: flex;
    z-index: 1001;
  }
  .about-teaser {
    grid-template-columns: 1fr;
  }
  .project-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero {
    background-attachment: scroll;
  }
}

@media (max-width: 576px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
  .form-container {
    padding: 2rem 1.5rem;
  }
  .section {
    padding: 70px 15px;
  }
  }