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

:root {
  --bg-dark: #1a1a1a;
  --bg-darker: #111;
  --bg-card: #222;
  --text: #e0e0e0;
  --text-muted: #999;
  --accent: #f0a500;
  --accent-hover: #d4900a;
  --white: #fff;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.6;
}

h1, h2, h3 {
  line-height: 1.2;
}

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

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--bg-dark);
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn:hover {
  background: var(--accent-hover);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--bg-darker);
  z-index: 1000;
  border-bottom: 2px solid var(--accent);
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 2px;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  color: var(--text);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1px;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: linear-gradient(135deg, var(--bg-darker) 0%, #2a2a2a 100%);
}

.hero-content {
  max-width: 700px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 3px;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
}

/* Services */
.services {
  padding: 100px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.services h2,
.portfolio h2,
.about h2,
.contact h2 {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 60px;
  color: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  padding: 40px 30px;
  border-radius: 6px;
  border: 1px solid #333;
  transition: border-color 0.2s, transform 0.2s;
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  color: var(--accent);
}

.service-card h3 {
  font-size: 1.3rem;
  color: var(--white);
  margin-bottom: 10px;
}

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

/* Portfolio */
.portfolio {
  padding: 100px 24px;
  background: var(--bg-darker);
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
}

.filter-btn {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid #444;
  padding: 10px 22px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: var(--bg-dark);
  border-color: var(--accent);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.portfolio-item {
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-card);
  transition: transform 0.2s;
}

.portfolio-item:hover {
  transform: translateY(-4px);
}

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

.portfolio-placeholder {
  width: 100%;
  height: 220px;
  background: linear-gradient(135deg, #333 0%, #444 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.portfolio-item p {
  padding: 16px;
  font-weight: 600;
  color: var(--text);
}

/* About */
.about {
  padding: 100px 24px;
  max-width: 900px;
  margin: 0 auto;
}

.about-content p {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 50px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 2.5rem;
  color: var(--accent);
  font-weight: 900;
}

.stat span {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Contact */
.contact {
  padding: 100px 24px;
  background: var(--bg-darker);
}

.contact-wrapper {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid #444;
  border-radius: 4px;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

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

.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #e74c3c;
}

.error-msg {
  color: #e74c3c;
  font-size: 0.8rem;
  margin-top: 4px;
  display: block;
  min-height: 1.2em;
}

.contact-info {
  padding-top: 10px;
}

.contact-info h3 {
  font-size: 1.4rem;
  color: var(--white);
  margin-bottom: 24px;
}

.contact-info p {
  margin-bottom: 14px;
  color: var(--text-muted);
}

.contact-info p strong {
  color: var(--text);
}

.phone-link {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s;
}

.phone-link:hover {
  color: var(--accent-hover);
}

/* Mobile phone button */
.mobile-phone-btn {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 80px;
  height: 80px;
  background: var(--accent);
  color: var(--bg-dark);
  border-radius: 50%;
  z-index: 999;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
  font-weight: 700;
}

.mobile-phone-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.5);
}

.mobile-phone-btn span:first-child {
  font-size: 1.8rem;
}

.mobile-phone-btn .phone-text {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
  line-height: 1.1;
}

/* Footer */
.footer {
  text-align: center;
  padding: 30px 24px;
  border-top: 1px solid #333;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Mobile */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-darker);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 2px solid var(--accent);
  }

  .nav-links.open {
    display: flex;
  }

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

  .stats {
    gap: 30px;
  }

  .mobile-phone-btn {
    display: flex !important;
  }
}