:root {
  /* Color Palette */
  --color-orange: #FF6B00;
  --color-silver: #C0C0C0;
  --color-silver-light: #E8E8E8;
  --color-silver-dark: #A0A0A0;
  --color-grey-dark: #222222;
  --color-grey-medium: #444444;
  --color-grey-light: #F4F4F4;
  --color-white: #FFFFFF;
  --color-black: #111111;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Layout */
  --max-width: 1200px;
  --section-padding: 6rem 2rem;

  /* UI Elements */
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-black);
  color: var(--color-silver-light);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--color-white);
}

p {
  margin-bottom: 1rem;
  color: var(--color-silver);
}

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* Utilities */
.text-center {
  text-align: center;
}

.flex-reverse {
  display: flex;
  flex-direction: row-reverse;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 768px) {
  .flex-reverse {
    flex-direction: column;
  }
}

.box-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  box-shadow: var(--glass-shadow);
  padding: 2.5rem;
  transition: var(--transition);
}

.box-glass:hover {
  transform: translateY(-5px);
  border-color: var(--color-orange);
  box-shadow: 0 10px 40px rgba(255, 107, 0, 0.15);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-family: var(--font-heading);
  letter-spacing: 0.5px;
  cursor: pointer;
  border: 2px solid transparent;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.btn-primary {
  background-color: var(--color-orange);
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(255, 107, 0, 0.4);
}

.btn-primary:hover {
  background-color: #e66000;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 0, 0.6);
}

.btn-secondary {
  background-color: var(--color-silver);
  color: var(--color-grey-dark);
}

.btn-secondary:hover {
  background-color: var(--color-white);
  transform: translateY(-2px);
}

.btn-outline {
  border-color: var(--color-orange);
  color: var(--color-orange);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-orange);
  color: var(--color-white);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: rgba(17, 17, 17, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
}

.header.scrolled {
  padding: 1rem 5%;
  background: rgba(17, 17, 17, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.logo a {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-white);
  letter-spacing: -1px;
}

.logo span {
  color: var(--color-orange);
  font-weight: 300;
}

.nav-list {
  display: flex;
  gap: 2rem;
}

.nav-list a {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-silver-light);
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: var(--color-orange);
  transition: var(--transition);
}

.nav-list a:hover {
  color: var(--color-orange);
}

.nav-list a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--color-white);
  transition: var(--transition);
}

/* Sections */
section {
  padding: var(--section-padding);
}

.section-heading {
  margin-bottom: 3rem;
  position: relative;
}

.section-heading h2 {
  font-size: 3rem;
  color: var(--color-white);
  display: inline-block;
}

.section-heading h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-orange);
  margin-top: 10px;
  border-radius: 2px;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(rgba(17, 17, 17, 0.8), rgba(17, 17, 17, 0.8)), url('./assets/hero_background.jpg') center/cover no-repeat;
  padding-top: 100px;
  position: relative;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 150px;
  background: linear-gradient(to top, var(--color-black), transparent);
}

.hero-content {
  max-width: 800px;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  font-size: 4.5rem;
  margin-bottom: 1.5rem;
}

.hero-title span {
  color: var(--color-orange);
  display: block;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
  color: var(--color-silver);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero .btn {
  margin: 0 0.5rem;
}

/* About Us */
.about {
  background-color: var(--color-black);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about p {
  font-size: 1.1rem;
}

.why-partner-box h3 {
  color: var(--color-orange);
}

/* Services */
.services {
  background-color: var(--color-grey-dark);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  text-align: left;
}

.service-icon {
  margin-bottom: 1.5rem;
}

.service-icon img {
  width: 70px;
  height: 70px;
  object-fit: contain;
}

/* Process */
.process {
  background: var(--color-black);
}

.process-list li {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.process-check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 25px;
  height: 25px;
  background: var(--color-orange);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 0.8rem;
}

.video-container {
  width: 100%;
  height: 400px;
  border-radius: var(--border-radius);
  overflow: hidden;
  background: var(--color-black);
  position: relative;
}

.process-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* CTA & Final Talk */
.cta,
.final-talk {
  background: var(--color-grey-dark);
  text-align: center;
}

.cta-content {
  max-width: 800px;
  margin: 0 auto;
}

.cta-buttons {
  margin-top: 2rem;
}

/* Portfolio Section */
.portfolio {
  background-color: var(--color-black);
}

.portfolio .section-heading {
  margin-bottom: 3rem;
}

.portfolio-category {
  margin-bottom: 5rem;
}

.portfolio-category:last-child {
  margin-bottom: 0;
}

.category-title {
  font-size: 2rem;
  color: var(--color-orange);
  margin-bottom: 2rem;
  text-align: left;
  border-left: 4px solid var(--color-orange);
  padding-left: 1rem;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 2.5rem;
}

.portfolio-grid.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1200px) {
  .portfolio-grid.grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .portfolio-grid.grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {

  .portfolio-grid,
  .portfolio-grid.grid-4 {
    grid-template-columns: 1fr;
  }
}

.portfolio-item {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  overflow: hidden;
  text-align: left;
}

.portfolio-image {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: calc(var(--border-radius) - 4px);
  overflow: hidden;
  background: var(--color-grey-dark);
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.portfolio-info {
  padding: 0 0.5rem;
}

.portfolio-info h3 {
  font-size: 1.4rem;
  margin-bottom: 0.3rem;
  color: var(--color-white);
  transition: color 0.3s ease;
}

.portfolio-item:hover .portfolio-info h3 {
  color: var(--color-orange);
}

.portfolio-info p {
  color: var(--color-silver-dark);
  font-size: 0.95rem;
  margin: 0;
}

/* Footer */
.footer {
  background-color: #0a0a0a;
  padding: 4rem 2rem 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-links h4 {
  margin-bottom: 1.5rem;
  color: var(--color-white);
}

.footer-links ul li {
  margin-bottom: 0.8rem;
}

.footer-links a:hover {
  color: var(--color-orange);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--color-silver-dark);
  font-size: 0.9rem;
}

/* Contact Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  width: 90%;
  max-width: 500px;
  position: relative;
  transform: translateY(30px) scale(0.95);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  background: rgba(34, 34, 34, 0.85);
  /* Darker glass for modal */
}

.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--color-silver);
  font-size: 2rem;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--color-orange);
  transform: rotate(90deg);
}

.modal-content h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.modal-content p {
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

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

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  color: var(--color-white);
  font-family: var(--font-body);
  transition: var(--transition);
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--color-orange);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 10px rgba(255, 107, 0, 0.2);
}

.btn-block {
  width: 100%;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  visibility: hidden;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  will-change: opacity, visibility;
}

.fade-in-section.is-visible {
  opacity: 1;
  transform: none;
  visibility: visible;
}

@media (max-width: 768px) {
  .fade-in-section {
    opacity: 1 !important;
    transform: none !important;
    visibility: visible !important;
    transition: none !important;
  }
}

/* Responsive */
@media (max-width: 900px) {
  .about-content {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  .nav-list {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(17, 17, 17, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }

  .nav-list.active {
    left: 0;
  }

  .menu-toggle {
    display: flex;
  }

  .section-heading h2 {
    font-size: 2.2rem;
  }

  .hero {
    padding-top: 80px;
  }
}