/* ===== Variables ===== */
:root {
  --color-bg: #0d1117;
  --color-bg-elevated: #161b22;
  --color-surface: #21262d;
  --color-text: #e6edf3;
  --color-text-muted: #8b949e;
  --color-accent: #d4a853;
  --color-accent-hover: #e4b963;
  --color-border: #30363d;
  --font-display: "DM Serif Display", Georgia, serif;
  --font-body: "Outfit", system-ui, sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul {
  list-style: none;
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-lg) 0;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--color-border);
}

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

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
}

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

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav a {
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.btn-large {
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(212, 168, 83, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(212, 168, 83, 0.06), transparent),
    radial-gradient(ellipse 40% 30% at 0% 80%, rgba(212, 168, 83, 0.05), transparent);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-label {
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: var(--space-xl);
}

.hero-title em {
  font-style: italic;
  color: var(--color-accent);
}

.hero-text {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: var(--space-2xl);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-border), transparent);
  border-radius: 1px;
  animation: scroll-pulse 2s ease-in-out infinite;
}

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

/* ===== Sections ===== */
.section {
  padding: var(--space-4xl) 0;
}

.section-label {
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 400;
  margin-bottom: var(--space-2xl);
}

/* ===== Services ===== */
.services {
  background: var(--color-bg-elevated);
}

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

.service-card {
  padding: var(--space-2xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition);
}

.service-card:hover {
  border-color: rgba(212, 168, 83, 0.4);
  transform: translateY(-4px);
}

.service-icon {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-accent);
  opacity: 0.8;
  margin-bottom: var(--space-md);
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== About ===== */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  max-width: 540px;
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.about-list li {
  position: relative;
  padding-left: var(--space-xl);
  color: var(--color-text-muted);
}

.about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-block {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg-elevated) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

/* ===== Contact ===== */
.contact {
  background: var(--color-bg-elevated);
}

.contact-intro {
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: var(--space-2xl);
}

.contact-form {
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.form-row label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--color-text-muted);
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

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

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

/* ===== Footer ===== */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
}

.footer-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color var(--transition);
}

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

.footer-legal {
  width: 100%;
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-lg);
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
  }

  .nav a:last-child {
    border-bottom: none;
    margin-top: var(--space-sm);
  }

  .nav-toggle {
    display: flex;
  }

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

  .about-visual {
    order: -1;
  }

  .about-block {
    max-width: 100%;
  }

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

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

@media (max-width: 480px) {
  .section {
    padding: var(--space-3xl) 0;
  }

  .service-card {
    padding: var(--space-xl);
  }
}