/* =============================================
   GD Web Design — style.css
   ============================================= */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: #FAFAFA;
  color: #1A1A1A;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* --- Design Tokens --- */
:root {
  --accent: #4A6FA5;
  --accent-dark: #3A5A8F;
  --bg: #FAFAFA;
  --bg-alt: #F2F2F0;
  --text: #1A1A1A;
  --text-muted: #6B6B6B;
  --border: #E4E4E4;
  --radius: 8px;
  --max-w: 1000px;
  --max-w-narrow: 640px;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: var(--max-w-narrow);
}

.section {
  padding: 6rem 0;
}

.section-alt {
  background-color: var(--bg-alt);
}

/* --- Typography --- */
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-intro {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  max-width: 480px;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  background-color: var(--accent);
  color: #fff;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  border: 2px solid var(--accent);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
  letter-spacing: 0.01em;
}

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

.btn:active {
  transform: translateY(0);
}

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

.btn-outline:hover {
  background-color: var(--accent);
  color: #fff;
}

.btn-full {
  width: 100%;
  text-align: center;
  justify-content: center;
}

/* --- NAV --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo-img {
  height: 32px;
  width: auto;
  display: block;
}

.nav nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav nav a {
  font-size: 0.9375rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

.nav-cta {
  background-color: var(--accent);
  color: #fff !important;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius);
  font-weight: 500;
  transition: background-color 0.2s ease !important;
}

.nav-cta:hover {
  background-color: var(--accent-dark) !important;
  color: #fff !important;
}

/* --- HERO --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 60px; /* nav height */
  background-color: var(--bg);
  background-image: radial-gradient(circle, rgba(74, 111, 165, 0.35) 1.5px, transparent 1.5px);
  background-size: 28px 28px;
  position: relative;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 70% at 50% 50%, transparent 30%, var(--bg) 100%);
  pointer-events: none;
}

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

.hero-eyebrow {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.hero-headline {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.1875rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 360px;
}

/* --- SERVICES CARDS --- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: #fff;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card-muted {
  background-color: var(--bg);
  border-style: dashed;
}

.card-muted .card-icon {
  color: #C0C0C0;
}

.card-muted h3 {
  color: var(--text-muted);
}

.card-muted p {
  color: #AAAAAA;
}

.card-icon {
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* --- PORTFOLIO --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.portfolio-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #fff;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.portfolio-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.portfolio-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #E8E8E5;
  /* Replace with: background-image: url('img/project-one.jpg'); background-size: cover; */
}

.portfolio-info {
  padding: 1.5rem;
}

.portfolio-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.portfolio-info p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

/* --- ABOUT --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 5rem;
  align-items: start;
}

.about-text h2 {
  margin-bottom: 1rem;
}

.about-text p {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.about-text p:last-of-type {
  margin-bottom: 0;
}

.about-aside {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-top: 2rem;
}

.about-stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* --- CONTACT FORM --- */
.contact-form {
  margin-top: 2.5rem;
}

.hidden {
  display: none;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background-color: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #BABABA;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.12);
}

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

/* --- FOOTER --- */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  background-color: var(--bg);
}

.footer p {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-align: center;
}

/* --- FADE-IN ANIMATIONS --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero is always visible (above the fold) */
.hero {
  opacity: 1;
  transform: none;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .section {
    padding: 4rem 0;
  }

  /* Nav */
  .nav nav a:not(.nav-cta) {
    display: none;
  }

  /* Hero */
  .hero-headline {
    font-size: clamp(2.25rem, 10vw, 3rem);
  }

  .hero-sub {
    max-width: 100%;
  }

  /* Services */
  .cards {
    grid-template-columns: 1fr;
  }

  /* Portfolio */
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  /* About */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about-aside {
    flex-direction: row;
    padding-top: 0;
    gap: 2.5rem;
    flex-wrap: wrap;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .about-grid {
    grid-template-columns: 1fr 200px;
    gap: 3rem;
  }
}