/* ============================================
   ALUMESTE SHUTTER — Design System & Styles
   ============================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700;800;900&family=Open+Sans:wght@300;400;500;600;700&display=swap');

/* ── CSS Custom Properties ── */
:root {
  /* Brand Colors */
  --blue-primary: #1778A6;
  --blue-accent: #1FA3C6;
  --blue-dark: #0E5A7E;
  --blue-deeper: #0A3D56;
  --gray-light: #A7A9AC;
  --gray-medium: #6B6D70;
  --gray-dark: #3A3C3F;
  --black: #000000;
  --white: #FFFFFF;
  --off-white: #F7F9FB;
  --bg-light: #EEF3F7;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--blue-primary) 0%, var(--blue-accent) 100%);
  --gradient-dark: linear-gradient(135deg, var(--blue-deeper) 0%, var(--blue-dark) 50%, var(--blue-primary) 100%);
  --gradient-hero-overlay: linear-gradient(135deg, rgba(10, 61, 86, 0.85) 0%, rgba(23, 120, 166, 0.6) 100%);
  --gradient-card: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(23,120,166,0.03) 100%);

  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;

  /* Spacing */
  --section-padding: 100px 0;
  --container-width: 1200px;
  --container-padding: 0 24px;

  /* Borders & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 60px rgba(0, 0, 0, 0.16);
  --shadow-blue: 0 8px 30px rgba(23, 120, 166, 0.25);
  --shadow-blue-lg: 0 12px 40px rgba(23, 120, 166, 0.35);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Reset & Base ── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--gray-dark);
  background-color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

/* ── Container ── */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--blue-deeper);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--blue-accent);
  margin-bottom: 16px;
}

.section-label::before,
.section-label::after {
  content: '';
  width: 30px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--gradient-dark);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--gray-medium);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: var(--transition-smooth);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  box-shadow: var(--shadow-blue-lg);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn-outline-dark {
  background: transparent;
  color: var(--blue-primary);
  border: 2px solid var(--blue-primary);
}

.btn-outline-dark:hover {
  background: var(--blue-primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.05rem;
}

/* ── Animations ── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
  padding: 10px 0;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo img {
  height: 48px;
  width: auto;
  transition: var(--transition-base);
}

.header.scrolled .header-logo img {
  height: 40px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--white);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: var(--transition-base);
  position: relative;
}

.header.scrolled .nav-link {
  color: var(--gray-dark);
}

.nav-link:hover,
.nav-link.active {
  color: var(--blue-primary);
  background: rgba(23, 120, 166, 0.08);
}

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
  color: var(--blue-primary);
  background: rgba(23, 120, 166, 0.08);
}

.header-cta {
  margin-left: 16px;
}

.header-cta .btn-primary {
  padding: 10px 24px;
  font-size: 0.85rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.mobile-menu-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition-base);
}

.header.scrolled .mobile-menu-toggle span {
  background: var(--gray-dark);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.5s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  transition: transform 8s ease;
}

.hero-slide.active img {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero-overlay);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 750px;
  animation: fadeInUp 1s ease 0.3s both;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: #4ADE80;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--blue-accent), #7DD3FC);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 40px;
  max-width: 560px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Hero Carousel Indicators */
.hero-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 12px;
}

.hero-indicator {
  width: 40px;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  cursor: pointer;
  transition: var(--transition-base);
  border: none;
}

.hero-indicator.active {
  background: var(--white);
  width: 60px;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  right: 40px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.75rem;
  font-family: var(--font-heading);
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: float 3s ease infinite;
}

.scroll-indicator .mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator .mouse::after {
  content: '';
  position: absolute;
  width: 4px;
  height: 8px;
  background: var(--white);
  border-radius: 2px;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: float 2s ease infinite;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
  padding: var(--section-padding);
  background: var(--off-white);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue-accent), transparent);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition-base);
  border: 1px solid rgba(23, 120, 166, 0.06);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: var(--transition-base);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(23, 120, 166, 0.08), rgba(31, 163, 198, 0.08));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
}

.service-card:hover .service-icon {
  background: var(--gradient-primary);
  transform: scale(1.1) rotate(5deg);
}

.service-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--blue-primary);
  stroke-width: 1.5;
  fill: none;
  transition: var(--transition-base);
}

.service-card:hover .service-icon svg {
  stroke: var(--white);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--blue-deeper);
}

.service-card p {
  font-size: 0.9rem;
  color: var(--gray-medium);
  line-height: 1.6;
}

/* ============================================
   WHY CHOOSE US SECTION
   ============================================ */
.why-us {
  padding: var(--section-padding);
  background: var(--white);
}

.why-us-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.why-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  position: relative;
}

.why-card:hover {
  background: var(--off-white);
  transform: translateY(-4px);
}

.why-card-number {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.15;
  line-height: 1;
  margin-bottom: 16px;
}

.why-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-blue);
}

.why-card-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--white);
  stroke-width: 2;
  fill: none;
}

.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--blue-deeper);
}

.why-card p {
  font-size: 0.9rem;
  color: var(--gray-medium);
  line-height: 1.6;
}

/* ============================================
   PORTFOLIO SECTION (Home Preview)
   ============================================ */
.portfolio-preview {
  padding: var(--section-padding);
  background: var(--blue-deeper);
  position: relative;
  overflow: hidden;
}

.portfolio-preview::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(31, 163, 198, 0.15), transparent 70%);
  border-radius: 50%;
}

.portfolio-preview .section-label {
  color: var(--blue-accent);
}

.portfolio-preview .section-title {
  background: linear-gradient(135deg, var(--white), var(--blue-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.portfolio-preview .section-subtitle {
  color: rgba(255, 255, 255, 0.6);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  group: true;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.portfolio-item:hover img {
  transform: scale(1.1);
}

.portfolio-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 61, 86, 0.9) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  transition: var(--transition-base);
}

.portfolio-item:hover .portfolio-item-overlay {
  background: linear-gradient(180deg, rgba(10, 61, 86, 0.3) 0%, rgba(10, 61, 86, 0.95) 100%);
}

.portfolio-item-category {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--blue-accent);
  margin-bottom: 4px;
}

.portfolio-item-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

.portfolio-item-zoom {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-spring);
  opacity: 0;
}

.portfolio-item:hover .portfolio-item-zoom {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

.portfolio-item-zoom svg {
  width: 20px;
  height: 20px;
  stroke: var(--white);
  stroke-width: 2;
  fill: none;
}

.portfolio-cta {
  text-align: center;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
  padding: var(--section-padding);
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: var(--radius-xl);
}

.about-image-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: var(--gradient-primary);
  color: var(--white);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-blue);
}

.about-image-badge .number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
}

.about-image-badge .text {
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0.9;
}

.about-content .section-header {
  text-align: left;
  margin-bottom: 24px;
}

.about-content .section-label::before {
  display: none;
}

.about-text {
  font-size: 1.05rem;
  color: var(--gray-medium);
  margin-bottom: 32px;
  line-height: 1.8;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-dark);
}

.about-feature .check {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, rgba(23, 120, 166, 0.1), rgba(31, 163, 198, 0.1));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about-feature .check svg {
  width: 16px;
  height: 16px;
  stroke: var(--blue-primary);
  stroke-width: 2.5;
  fill: none;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  padding: 80px 0;
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(31, 163, 198, 0.2), transparent 70%);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(23, 120, 166, 0.2), transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-content h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
  padding: var(--section-padding);
  background: var(--off-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-info-icon {
  width: 52px;
  height: 52px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-blue);
}

.contact-info-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--white);
  stroke-width: 2;
  fill: none;
}

.contact-info-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-deeper);
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 0.9rem;
  color: var(--gray-medium);
}

.contact-info-item a {
  color: var(--blue-primary);
  font-weight: 500;
}

.contact-info-item a:hover {
  color: var(--blue-accent);
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.social-link {
  width: 44px;
  height: 44px;
  background: var(--white);
  border: 1px solid rgba(23, 120, 166, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
}

.social-link:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: var(--shadow-blue);
}

.social-link svg {
  width: 20px;
  height: 20px;
  fill: var(--blue-primary);
  transition: var(--transition-base);
}

.social-link:hover svg {
  fill: var(--white);
}

/* Contact Form */
.contact-form {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.contact-form h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--blue-deeper);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 14px 18px;
  border: 2px solid rgba(23, 120, 166, 0.1);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--gray-dark);
  background: var(--off-white);
  transition: var(--transition-base);
  outline: none;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--blue-primary);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(23, 120, 166, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  margin-top: 24px;
}

.form-submit .btn {
  width: 100%;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--blue-deeper);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand img {
  height: 44px;
  width: auto;
  margin-bottom: 16px;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
  max-width: 300px;
}

.footer h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  position: relative;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition-base);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-links a:hover {
  color: var(--blue-accent);
  transform: translateX(4px);
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom-links a:hover {
  color: var(--blue-accent);
}

/* ============================================
   PORTFOLIO PAGE (Full Dedicated Page)
   ============================================ */
.portfolio-page {
  padding-top: 120px;
  padding-bottom: 80px;
  min-height: 100vh;
  background: var(--off-white);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 10px 24px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-medium);
  background: var(--white);
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-base);
}

.filter-btn:hover {
  color: var(--blue-primary);
  border-color: var(--blue-primary);
}

.filter-btn.active {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-blue);
}

.portfolio-full-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.portfolio-full-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-base);
}

.portfolio-full-item.hidden {
  display: none;
}

.portfolio-full-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.portfolio-full-item:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.portfolio-full-item:hover img {
  transform: scale(1.05);
}

.portfolio-full-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10, 61, 86, 0.9) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  opacity: 0;
  transition: var(--transition-base);
}

.portfolio-full-item:hover .portfolio-full-overlay {
  opacity: 1;
}

.portfolio-full-overlay span {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--blue-accent);
  margin-bottom: 4px;
}

.portfolio-full-overlay h3 {
  font-size: 1.1rem;
  color: var(--white);
  font-weight: 700;
}

.portfolio-full-overlay p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

/* ── Modal ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--white);
  border-radius: var(--radius-xl);
  max-width: 800px;
  width: 90%;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.9) translateY(20px);
  transition: var(--transition-spring);
}

.modal-backdrop.open .modal-content {
  transform: scale(1) translateY(0);
}

.modal-image {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
}

.modal-body {
  padding: 32px;
}

.modal-category {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--blue-accent);
  margin-bottom: 8px;
  display: block;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--blue-deeper);
  margin-bottom: 12px;
}

.modal-description {
  font-size: 0.95rem;
  color: var(--gray-medium);
  line-height: 1.7;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: none;
  border-radius: 50%;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
  z-index: 2001;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: rotate(90deg);
}

/* ============================================
   WhatsApp Floating Button
   ============================================ */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition-base);
  animation: float 3s ease infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
  width: 30px;
  height: 30px;
  fill: var(--white);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .why-us-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .portfolio-grid,
  .portfolio-full-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 70px 0;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 380px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 80px 32px 32px;
    gap: 4px;
    box-shadow: var(--shadow-xl);
    transition: var(--transition-smooth);
    z-index: 1000;
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-link {
    color: var(--gray-dark);
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: 1rem;
  }

  .nav-link:hover {
    background: rgba(23, 120, 166, 0.06);
  }

  .header-cta {
    margin-left: 0;
    margin-top: 16px;
  }

  .header-cta .btn-primary {
    width: 100%;
    padding: 14px 24px;
    font-size: 0.95rem;
  }

  .hero h1 {
    font-size: clamp(2rem, 7vw, 3rem);
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .scroll-indicator {
    display: none;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    order: -1;
  }

  .about-content .section-header {
    text-align: center;
  }

  .about-content .section-label::before {
    display: block;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .portfolio-filters {
    gap: 6px;
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .services-grid {
    grid-template-columns: 1fr;
  }

  .why-us-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-grid,
  .portfolio-full-grid {
    grid-template-columns: 1fr;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 24px;
  }

  .hero-badge {
    font-size: 0.7rem;
    padding: 6px 14px;
  }
}

/* Mobile menu overlay */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}