/* ============================================
   Işılak Güneş Enerji Sistemleri - Modern Style
   ============================================ */

:root {
  --primary: #f59e0b;       /* solar gold */
  --primary-dark: #d97706;
  --secondary: #1e3a8a;     /* deep blue */
  --accent: #0ea5e9;        /* sky */
  --dark: #0f172a;
  --gray-900: #111827;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --gray-50: #f9fafb;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --radius-lg: 20px;
  --container: 1200px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--gray-900);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; transition: var(--transition); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============ TOPBAR ============ */
.topbar {
  background: var(--dark);
  color: var(--gray-300);
  font-size: 0.875rem;
  padding: 0.5rem 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.topbar-info { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.topbar-info span { display: flex; align-items: center; gap: 0.4rem; }
.topbar-info a:hover { color: var(--primary); }
.topbar-social { display: flex; gap: 0.75rem; }
.topbar-social a {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
}
.topbar-social a:hover { background: var(--primary); color: var(--white); }

/* ============ HEADER / NAV ============ */
.header {
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  gap: 1rem;
}
.brand { display: flex; align-items: center; }
.brand img {
  height: 72px;
  width: auto;
  display: block;
  transition: var(--transition);
}
.brand:hover img { transform: scale(1.03); }
.footer-brand img { height: 70px; }

.nav { display: flex; align-items: center; gap: 0.25rem; }
.nav a {
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-weight: 500;
  color: var(--gray-700);
  position: relative;
}
.nav a:hover { color: var(--secondary); background: var(--gray-100); }
.nav a.active {
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}
.nav-cta {
  margin-left: 0.5rem;
  background: var(--secondary);
  color: var(--white) !important;
  padding: 0.6rem 1.25rem !important;
  border-radius: 999px !important;
}
.nav-cta:hover { background: var(--dark); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.menu-toggle span {
  display: block;
  width: 26px; height: 3px;
  background: var(--secondary);
  margin: 5px 0;
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
}
.hero-slides {
  position: absolute; inset: 0;
  z-index: 1;
}
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}
.hero-slide.active { opacity: 1; }
.hero-slide::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(15,23,42,0.85) 0%, rgba(30,58,138,0.65) 60%, rgba(245,158,11,0.35) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 5rem 0;
}
.hero-eyebrow {
  display: inline-block;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.4);
  color: var(--primary);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  backdrop-filter: blur(10px);
}
.hero h2 {
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  max-width: 800px;
}
.hero h2 span { color: var(--primary); }
.hero p {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.9);
  max-width: 620px;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  box-shadow: 0 8px 20px -8px rgba(245,158,11,0.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 24px -8px rgba(245,158,11,0.7); }
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.5);
  color: var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--secondary); border-color: var(--white); }
.btn-dark { background: var(--secondary); color: var(--white); }
.btn-dark:hover { background: var(--dark); transform: translateY(-2px); }

/* ============ SECTIONS ============ */
section { padding: 5rem 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 3rem; }
.section-eyebrow {
  display: inline-block;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}
.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--secondary);
  margin-bottom: 1rem;
}
.section-head p { color: var(--gray-500); font-size: 1.05rem; }

/* ============ STATS ============ */
.stats {
  background: var(--secondary);
  padding: 3rem 0;
  color: var(--white);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}
.stat-num {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.stat-label {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.85);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============ FEATURES ============ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.feature {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  transition: var(--transition);
}
.feature:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}
.feature-icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.75rem;
  color: var(--white);
}
.feature h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 0.75rem;
}
.feature p { color: var(--gray-500); font-size: 0.95rem; }

/* ============ PRODUCTS ============ */
.products {
  background: var(--gray-50);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.product {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}
.product:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}
.product-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--gray-100);
}
.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}
.product:hover .product-image img { transform: scale(1.08); }
.product-body { padding: 1.5rem; }
.product-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.product h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 0.5rem;
}
.product p { color: var(--gray-500); font-size: 0.9rem; margin-bottom: 1rem; }
.product-link {
  font-weight: 600;
  color: var(--primary);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.product-link:hover { color: var(--primary-dark); gap: 0.6rem; }

/* ============ ABOUT BLOCK ============ */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-img {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.about-img img { width: 100%; }
.about-img::before {
  content: '';
  position: absolute;
  inset: -10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0.2;
}
.about-text h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 1.25rem;
  line-height: 1.2;
}
.about-text > p {
  color: var(--gray-700);
  margin-bottom: 1rem;
  font-size: 1rem;
}
.about-list { margin: 1.5rem 0; list-style: none; }
.about-list li {
  display: flex;
  gap: 0.75rem;
  padding: 0.5rem 0;
  color: var(--gray-700);
}
.about-list li::before {
  content: '✓';
  width: 24px; height: 24px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ============ CTA ============ */
.cta-banner {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--dark) 100%);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%; right: -10%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  opacity: 0.3;
}
.cta-banner h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
}
.cta-banner p { color: rgba(255,255,255,0.85); }
.cta-banner-content { position: relative; z-index: 1; }

/* ============ CONTACT ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}
.contact-info {
  background: var(--secondary);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}
.contact-info > p { color: rgba(255,255,255,0.8); margin-bottom: 2rem; }
.contact-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.contact-item:last-of-type { border-bottom: none; }
.contact-item-icon {
  width: 44px; height: 44px;
  background: rgba(245,158,11,0.15);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-item-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.contact-item-value { font-weight: 600; }
.contact-item-value a:hover { color: var(--primary); }

.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
.form-field { margin-bottom: 1rem; }
.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.4rem;
}
.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1.5px solid var(--gray-300);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  background: var(--gray-50);
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(245,158,11,0.15);
}
.form-field textarea { resize: vertical; min-height: 130px; }
.form-success {
  display: none;
  padding: 1rem;
  background: #dcfce7;
  color: #166534;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-weight: 600;
}
.form-success.show { display: block; }

/* ============ MAP ============ */
.map-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.map-wrap iframe { width: 100%; height: 400px; border: 0; display: block; }

/* ============ PAGE HEADER ============ */
.page-header {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--dark) 100%);
  color: var(--white);
  padding: 5rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 60px;
  background: var(--white);
  clip-path: polygon(0 100%, 100% 100%, 100% 0);
}
.page-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.breadcrumb {
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { margin: 0 0.5rem; opacity: 0.5; }

/* ============ FOUNDER PROFILE ============ */
.founder {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 3rem;
}
.founder-photo {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.founder-photo img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.founder-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 0.25rem;
}
.founder-title {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 1.25rem;
}
.founder-bio p {
  color: var(--gray-700);
  margin-bottom: 1rem;
  text-align: justify;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--dark);
  color: var(--gray-300);
  padding: 4rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer h4 {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}
.footer-brand { display: flex; align-items: center; margin-bottom: 1rem; background: var(--white); padding: 0.5rem 0.75rem; border-radius: 8px; width: fit-content; }
.footer-about { font-size: 0.9rem; line-height: 1.7; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 0.6rem; }
.footer ul a { font-size: 0.9rem; color: var(--gray-300); }
.footer ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact-item {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
}
.footer-contact-item .icon { color: var(--primary); flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

/* ============ LIGHTBOX ============ */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.94);
  display: none;
  align-items: center; justify-content: center;
  z-index: 9999;
  padding: 2rem;
}
.lightbox.open { display: flex; }
.lightbox-img-wrap {
  position: relative;
  max-width: 90vw;
  max-height: 88vh;
  display: flex; align-items: center; justify-content: center;
}
.lightbox img {
  max-width: 90vw;
  max-height: 88vh;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  user-select: none;
}
.lightbox-btn {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: 2px solid rgba(255,255,255,0.25);
  color: var(--white);
  font-size: 1.4rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(8px);
  transition: var(--transition);
  z-index: 10;
}
.lightbox-btn:hover { background: var(--primary); border-color: var(--primary); transform: translateY(-50%) scale(1.1); }
.lightbox-prev { left: -80px; }
.lightbox-next { right: -80px; }
.lightbox-close {
  position: fixed; top: 24px; right: 24px;
  background: rgba(255,255,255,0.15);
  color: var(--white); font-size: 1.4rem;
  width: 50px; height: 50px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.25);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(8px);
  z-index: 10001;
  transition: var(--transition);
}
.lightbox-close:hover { background: #ef4444; border-color: #ef4444; transform: rotate(90deg); }
.lightbox-counter {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255,255,255,0.15);
  color: var(--white);
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
  z-index: 10001;
}

@media (max-width: 768px) {
  .lightbox-prev { left: 8px; width: 44px; height: 44px; font-size: 1.1rem; }
  .lightbox-next { right: 8px; width: 44px; height: 44px; font-size: 1.1rem; }
}

/* ============ BROCHURES ============ */
.brosur-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.brosur-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.brosur-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}
.brosur-image {
  aspect-ratio: 3/4;
  overflow: hidden;
  background: var(--gray-100);
  position: relative;
}
.brosur-image img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s;
}
.brosur-card:hover .brosur-image img { transform: scale(1.05); }
.brosur-image::after {
  content: '\f00e';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(245,158,11,0.85) 100%);
  color: var(--white);
  display: flex; align-items: flex-end; justify-content: center;
  padding-bottom: 1.5rem;
  font-size: 1.5rem;
  opacity: 0;
  transition: opacity 0.3s;
}
.brosur-card:hover .brosur-image::after { opacity: 1; }
.brosur-body {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brosur-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--secondary);
}
.brosur-body span {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
}

@media (max-width: 980px) { .brosur-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .brosur-grid { grid-template-columns: 1fr; } }

/* ============ GALLERY ============ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.gallery-item {
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: var(--radius);
  cursor: pointer;
  position: relative;
  box-shadow: var(--shadow);
}
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s;
}
.gallery-item:hover img { transform: scale(1.1); }
.gallery-item::after {
  content: '\f00e';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  inset: 0;
  background: rgba(15,23,42,0.55);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  opacity: 0;
  transition: opacity 0.3s;
}
.gallery-item:hover::after { opacity: 1; }

@media (max-width: 980px) { .gallery-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; } }

/* ============ WHATSAPP FLOAT ============ */
.wa-float {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 58px; height: 58px;
  background: #25d366;
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 8px 25px rgba(37,211,102,0.4);
  z-index: 99;
  animation: pulse 2s infinite;
}
.wa-float:hover { transform: scale(1.1); }
@keyframes pulse {
  0% { box-shadow: 0 8px 25px rgba(37,211,102,0.4), 0 0 0 0 rgba(37,211,102,0.7); }
  70% { box-shadow: 0 8px 25px rgba(37,211,102,0.4), 0 0 0 15px rgba(37,211,102,0); }
  100% { box-shadow: 0 8px 25px rgba(37,211,102,0.4), 0 0 0 0 rgba(37,211,102,0); }
}

/* ============ ANIMATIONS ============ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============ RESPONSIVE ============ */
@media (max-width: 980px) {
  .features-grid, .products-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-split, .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .founder { grid-template-columns: 1fr; text-align: center; }
  .founder-photo { max-width: 200px; margin: 0 auto; }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0; right: -100%;
    height: 100vh;
    width: 280px;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 5rem 1.5rem 2rem;
    box-shadow: -10px 0 30px rgba(0,0,0,0.15);
    transition: right 0.4s ease;
  }
  .nav.open { right: 0; }
  .nav a { padding: 0.85rem 1rem; }
  .menu-toggle { display: block; z-index: 110; position: relative; }
  .brand img { height: 48px; }
  .topbar { font-size: 0.78rem; }
  .topbar-info { gap: 0.85rem; }
  section { padding: 3.5rem 0; }
  .hero { min-height: 500px; }
  .hero-content { padding: 3rem 0; }
  .features-grid, .products-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .cta-banner { padding: 2.5rem 1.75rem; flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .contact-info, .contact-form { padding: 1.75rem; }
  .stat-num { font-size: 2rem; }
}

@media (max-width: 480px) {
  .topbar { display: none; }
  .hero h2 { font-size: 1.85rem; }
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; width: 100%; }
}