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

:root {
  --bg: #ffffff;
  --bg-secondary: #f7f8fa;
  --bg-tertiary: #eef1f6;
  --text: #1a1a2e;
  --text-muted: #4a5568;
  --text-subtle: #8892a4;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #eff4ff;
  --accent-glow: rgba(37, 99, 235, 0.08);
  --border: #e2e8f0;
  --border-hover: #cbd5e1;
  --hover-bg: #f1f5f9;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --card-shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --nav-height: 64px;
  --radius: 14px;
  --radius-sm: 10px;
  --radius-xs: 6px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s, opacity 0.2s;
}

a:hover {
  opacity: 0.8;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--accent);
  color: white;
  padding: 0.5rem 1rem;
  z-index: 9999;
  font-size: 0.85rem;
}

.skip-link:focus {
  top: 0;
  opacity: 1;
}

.container {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

/* ==========================================
   NAVIGATION
   ========================================== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: box-shadow 0.3s;
}

#navbar.scrolled {
  box-shadow: 0 1px 16px rgba(0, 0, 0, 0.06);
}

.nav-container {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.5px;
}

.nav-logo:hover {
  color: var(--text);
  opacity: 1;
}

.logo-bracket {
  color: var(--accent);
  font-weight: 500;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav-links a {
  color: var(--text-muted);
  padding: 0.5rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-xs);
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--hover-bg);
  opacity: 1;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  margin-right: -10px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s;
  border-radius: 2px;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
  padding-top: calc(var(--nav-height) + 5rem);
  padding-bottom: 3rem;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 100%;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.hero h1 {
  font-size: 2.85rem;
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 1.25rem;
  letter-spacing: -1.5px;
  color: var(--text);
}

.tagline {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 580px;
}

/* Hero links */
.hero-links {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-links a {
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: all 0.25s;
}

.hero-links .cta-primary {
  background: var(--accent);
  color: #ffffff;
  border: 2px solid var(--accent);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.hero-links .cta-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
  opacity: 1;
  transform: translateY(-1px);
}

.hero-links .cta-outline {
  color: var(--text);
  border: 2px solid var(--border);
  background: var(--bg);
}

.hero-links .cta-outline:hover {
  border-color: var(--border-hover);
  background: var(--hover-bg);
  opacity: 1;
}

/* Hero social */
.hero-social {
  margin-top: 1.75rem;
  display: flex;
  gap: 0.75rem;
}

.hero-social a {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  transition: all 0.2s;
  background: var(--bg);
}

.hero-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
  opacity: 1;
}

/* Tech stack */
.tech-stack {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-stack span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--bg);
  transition: all 0.2s;
}

.tech-stack span:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ==========================================
   SECTION HEADERS
   ========================================== */
.section-header {
  margin-bottom: 2.5rem;
}

.section-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* ==========================================
   CLIENTS & BRANDS
   ========================================== */
.clients-section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.client-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  min-height: 64px;
}

.client-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.client-item img {
  max-width: 100%;
  max-height: 32px;
  object-fit: contain;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.client-item:hover img {
  opacity: 1;
}

/* ==========================================
   SHOWCASE CARDS (Visual Project Previews)
   ========================================== */
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.showcase-card {
  display: block;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
}

.showcase-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-3px);
  opacity: 1;
}

.showcase-preview {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--bg-secondary);
}

.showcase-preview img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s ease;
}

.showcase-card:hover .showcase-preview img {
  transform: scale(1.03);
}

.showcase-info {
  padding: 1.25rem 1.5rem;
}

.showcase-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.showcase-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

/* ==========================================
   PROJECT CARDS
   ========================================== */
.section-subheader {
  margin-top: 3.5rem;
  margin-bottom: 1.5rem;
}

.section-subheader h3 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.project-card {
  background: var(--card-bg);
  padding: 1.25rem 1.5rem;
  transition: all 0.25s;
  cursor: default;
  display: block;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--card-shadow);
}

a.project-card {
  cursor: pointer;
}

a.project-card:hover,
.project-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
  opacity: 1;
}

.project-card h3 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.arrow {
  color: var(--text-subtle);
  font-weight: 400;
}

.project-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.85rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* ==========================================
   CONTENT LIST
   ========================================== */
.content-list {
  display: flex;
  flex-direction: column;
}

.content-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-xs);
  margin: 0 -0.75rem;
  transition: background 0.2s;
}

.content-item:first-child {
  border-top: 1px solid var(--border);
}

a.content-item:hover {
  opacity: 1;
  background: var(--hover-bg);
}

a.content-item:hover .content-details h3 {
  color: var(--accent);
}

.content-details {
  flex: 1;
  min-width: 0;
}

.content-details h3 {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.2rem;
  transition: color 0.2s;
}

.content-source {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-subtle);
}

.content-item .arrow {
  font-size: 1rem;
  flex-shrink: 0;
  transition: transform 0.2s;
}

a.content-item:hover .arrow {
  transform: translateX(3px);
  color: var(--accent);
}

/* ==========================================
   TESTIMONIALS
   ========================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.testimonial-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: box-shadow 0.3s, transform 0.3s;
}

.testimonial-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.testimonial-card blockquote {
  margin: 0;
}

.testimonial-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.75;
  font-style: italic;
  margin-bottom: 1.25rem;
}

.testimonial-card p::before {
  content: "\201C";
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 0;
  vertical-align: -0.3em;
  margin-right: 0.1em;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.testimonial-author strong {
  font-size: 0.82rem;
  font-weight: 600;
}

.testimonial-author span {
  font-size: 0.72rem;
  color: var(--text-subtle);
}

/* ==========================================
   CONTACT
   ========================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: all 0.25s;
}

.contact-card:hover {
  border-color: var(--accent);
  background: var(--accent-light);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.08);
  opacity: 1;
  transform: translateY(-2px);
}

.contact-card:hover .contact-label {
  color: var(--accent);
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-subtle);
  transition: color 0.2s;
}

.contact-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  word-break: break-all;
}

/* ==========================================
   FOOTER
   ========================================== */
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-subtle);
}

/* ==========================================
   SCROLL ANIMATIONS
   ========================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .hero {
    padding-top: calc(var(--nav-height) + 4rem);
    min-height: auto;
  }

  .hero h1 {
    font-size: 1.9rem;
    letter-spacing: -1px;
  }

  .tagline {
    font-size: 0.95rem;
  }

  /* Navigation */
  .nav-toggle {
    display: flex;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 0.5rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    gap: 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    display: flex;
    align-items: center;
    padding: 0.875rem 1rem;
    min-height: 44px;
  }

  /* Clients */
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }

  /* Section headers */
  .section-header h2 {
    font-size: 1.4rem;
  }

  /* Content items */
  .content-details h3 {
    font-size: 0.82rem;
  }

  .showcase-info {
    padding: 1rem 1.25rem;
  }

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

  /* Testimonials */
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .hero h1 {
    font-size: 1.5rem;
    letter-spacing: -0.5px;
  }

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

  .hero h1 br {
    display: none;
  }

  .hero-links a {
    font-size: 0.82rem;
    padding: 0.6rem 1.25rem;
  }

  .tech-stack span {
    font-size: 0.68rem;
  }

  .showcase-info h3 {
    font-size: 0.88rem;
  }

  .showcase-info p {
    font-size: 0.78rem;
  }

  .project-card {
    padding: 1rem 1.25rem;
  }

  .project-card h3 {
    font-size: 0.85rem;
  }

  .project-card p {
    font-size: 0.78rem;
  }

  .content-details h3 {
    font-size: 0.78rem;
  }

  .testimonial-card {
    padding: 1.25rem;
  }

  .testimonial-card p {
    font-size: 0.8rem;
  }
}

@media (max-width: 360px) {
  .hero h1 {
    font-size: 1.35rem;
  }
}

/* Safe area for notched phones */
@supports (padding: env(safe-area-inset-bottom)) {
  footer {
    padding-bottom: calc(2rem + env(safe-area-inset-bottom));
  }

  #navbar {
    padding-top: env(safe-area-inset-top);
  }

  .hero {
    padding-top: calc(var(--nav-height) + env(safe-area-inset-top) + 5rem);
  }

  @media (max-width: 768px) {
    .hero {
      padding-top: calc(var(--nav-height) + env(safe-area-inset-top) + 4rem);
    }
  }

  .container {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }
}