/* ==========================================================================
   PORTFÓLIO SAMUEL ALVES - DESIGN SYSTEM & STYLES (MATCHING REFERENCE UI)
   ========================================================================== */

:root {
  --bg: #020817;
  --bg-alt: #070d1f;
  --card-bg: rgba(11, 19, 43, 0.75);
  --card-bg-hover: rgba(17, 28, 61, 0.9);
  --card-border: rgba(79, 111, 255, 0.18);
  --card-border-hover: rgba(79, 111, 255, 0.45);
  
  --primary-blue: #4F6FFF;
  --primary-blue-hover: #3b5bff;
  --primary-blue-glow: rgba(79, 111, 255, 0.35);
  --cyan-accent: #38BDF8;
  
  --text-white: #FFFFFF;
  --text-gray-100: #F1F5F9;
  --text-gray-300: #94A3B8;
  --text-gray-400: #64748B;
  
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-code: 'Fira Code', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  
  --container-max: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg);
  color: var(--text-gray-100);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 50% -10%, rgba(79, 111, 255, 0.18), transparent 45%),
    radial-gradient(circle at 10% 40%, rgba(56, 189, 248, 0.08), transparent 35%),
    radial-gradient(circle at 90% 80%, rgba(79, 111, 255, 0.1), transparent 40%);
  background-attachment: fixed;
}

/* Background Grid Overlay */
.bg-grid-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(79, 111, 255, 0.03) 1px, transparent 1px),
                    linear-gradient(to bottom, rgba(79, 111, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 30%, rgba(0, 0, 0, 0.8), transparent 85%);
}

.container {
  width: min(var(--container-max), calc(100% - 2rem));
  margin-inline: auto;
}

/* ==========================================================================
   HEADER & NAVBAR
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(2, 8, 23, 0.82);
  border-bottom: 1px solid rgba(79, 111, 255, 0.12);
  transition: all 0.3s ease;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-white);
}

.brand-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #4F6FFF, #2563eb);
  color: #fff;
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(79, 111, 255, 0.35);
  letter-spacing: -0.5px;
}

.header-container nav {
  margin-left: 2.5rem;
  margin-right: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-gray-300);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-white);
}

.btn-header-cv {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  background: var(--primary-blue);
  color: #fff;
  font-weight: 600;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: 0 4px 16px var(--primary-blue-glow);
  transition: all 0.25s ease;
}

.btn-header-cv:hover {
  background: var(--primary-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 111, 255, 0.5);
}

/* Mobile Toggle */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.4rem;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  padding-top: calc(var(--header-height) + 3.5rem);
  padding-bottom: 4.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
  align-items: center;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 4.2vw, 4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -1.2px;
  margin-bottom: 1rem;
}

.hero-title .text-white {
  color: var(--text-white);
}

.hero-title .text-gradient {
  background: linear-gradient(135deg, #60A5FA, #4F6FFF 60%, #93C5FD);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 600;
  color: var(--cyan-accent);
  margin-bottom: 1rem;
}

.hero-description {
  color: var(--text-gray-300);
  font-size: 0.98rem;
  line-height: 1.65;
  max-width: 560px;
  margin-bottom: 1.8rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  background: var(--primary-blue);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 20px var(--primary-blue-glow);
  transition: all 0.25s ease;
}

.btn-primary:hover {
  background: var(--primary-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(79, 111, 255, 0.5);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  background: rgba(15, 23, 42, 0.6);
  color: var(--text-gray-100);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: 1px solid var(--card-border);
  transition: all 0.25s ease;
}

.btn-outline:hover {
  background: rgba(30, 41, 59, 0.8);
  border-color: var(--card-border-hover);
  transform: translateY(-2px);
}

.hero-contact-row {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(79, 111, 255, 0.12);
  color: var(--text-gray-300);
  font-size: 0.86rem;
}

.hero-contact-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-gray-300);
  text-decoration: none;
  transition: color 0.2s ease;
}

.hero-contact-item:hover {
  color: var(--text-white);
}

.hero-contact-item svg {
  color: var(--primary-blue);
}

/* Hero Visual / Photo Container */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.hero-visual::before {
  content: '';
  position: absolute;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(79, 111, 255, 0.22) 0%, rgba(56, 189, 248, 0.08) 45%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
  filter: blur(20px);
}

.photo-card-wrapper {
  position: relative;
  z-index: 1;
  width: 310px;
  height: 310px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  padding: 7px;
  background: linear-gradient(145deg, rgba(79, 111, 255, 0.45), rgba(11, 19, 43, 0.85) 50%, rgba(56, 189, 248, 0.35));
  border: 2px solid rgba(79, 111, 255, 0.5);
  box-shadow: 0 0 40px rgba(79, 111, 255, 0.35), 0 15px 45px rgba(0, 0, 0, 0.65);
  transition: all 0.35s ease;
}

.photo-card-wrapper:hover {
  transform: scale(1.03);
  box-shadow: 0 0 50px rgba(79, 111, 255, 0.5), 0 20px 55px rgba(0, 0, 0, 0.75);
  border-color: rgba(56, 189, 248, 0.7);
}

.photo-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background: #070e24;
}

.photo-card-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  display: block;
  transition: transform 0.4s ease;
}

/* Profile Avatar Hover Effect */
.photo-card-wrapper:hover .photo-card-inner img {
  transform: scale(1.05);
}

/* ==========================================================================
   SECTIONS COMMON
   ========================================================================== */
.section {
  padding: 4.5rem 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2.2rem;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-white);
}

.section-title svg {
  color: var(--primary-blue);
}

.section-subtitle {
  color: var(--text-gray-300);
  font-size: 0.95rem;
  margin-top: 0.35rem;
}

.link-action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--primary-blue);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s ease;
}

.link-action:hover {
  color: var(--cyan-accent);
  transform: translateX(3px);
}

/* ==========================================================================
   SKILLS SECTION (4 CARDS GRID)
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}

.skill-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.3rem;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.skill-card:hover {
  background: var(--card-bg-hover);
  border-color: var(--card-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(79, 111, 255, 0.15);
}

.skill-card-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.1rem;
}

.skill-card-icon {
  width: 32px;
  height: 32px;
  color: var(--primary-blue);
}

.skill-card-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.25;
}

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-item {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  color: var(--text-gray-300);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.tag-item:hover {
  background: rgba(79, 111, 255, 0.18);
  border-color: rgba(79, 111, 255, 0.4);
  color: var(--text-white);
}

/* ==========================================================================
   PROJECTS SECTION (GITHUB API INTEGRATION)
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.project-card:hover {
  background: var(--card-bg-hover);
  border-color: var(--card-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5), 0 0 20px rgba(79, 111, 255, 0.2);
}

.project-preview {
  position: relative;
  width: 100%;
  height: 160px;
  background: linear-gradient(135deg, #09132d, #030818);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(79, 111, 255, 0.12);
  overflow: hidden;
}

.project-preview-icon {
  font-size: 3.5rem;
  color: rgba(79, 111, 255, 0.4);
  transition: transform 0.3s ease;
}

.project-card:hover .project-preview-icon {
  transform: scale(1.1);
  color: var(--primary-blue);
}

.project-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.25rem 1.4rem;
}

.project-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.8rem;
  margin-bottom: 0.6rem;
}

.project-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.25;
}

.project-lang-badge {
  padding: 0.2rem 0.55rem;
  background: rgba(79, 111, 255, 0.15);
  border: 1px solid rgba(79, 111, 255, 0.3);
  color: var(--cyan-accent);
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 4px;
  white-space: nowrap;
}

.project-desc {
  color: var(--text-gray-300);
  font-size: 0.88rem;
  line-height: 1.5;
  margin-bottom: 1.1rem;
  flex: 1;
}

.project-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.8rem;
  color: var(--text-gray-400);
}

.project-stats {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.btn-github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--primary-blue);
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s ease;
}

.btn-github-link:hover {
  color: var(--cyan-accent);
}

/* Skeleton Loaders */
.skeleton {
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.6) 25%, rgba(30, 41, 59, 0.8) 50%, rgba(15, 23, 42, 0.6) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite ease-in-out;
  border-radius: 4px;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  height: 280px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
}

/* ==========================================================================
   EDUCATION & CERTIFICATIONS
   ========================================================================== */
.edu-cert-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
}

.edu-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
}

.edu-item {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 1.4rem;
  border-left: 2px solid var(--primary-blue);
}

.edu-item:last-child {
  margin-bottom: 0;
}

.edu-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
}

.edu-institution {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cyan-accent);
  margin-top: 0.15rem;
}

.edu-period {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-gray-400);
  margin-top: 0.35rem;
}

.badge-status {
  padding: 0.15rem 0.5rem;
  background: rgba(56, 189, 248, 0.15);
  color: var(--cyan-accent);
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 4px;
}

/* Certifications Grid */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.cert-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 1.1rem;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

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

.cert-org-logo {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
}

.cert-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.cert-date {
  font-size: 0.75rem;
  color: var(--text-gray-400);
}

/* Languages Card */
.languages-card {
  margin-top: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
}

.lang-grid {
  display: flex;
  gap: 2.5rem;
  margin-top: 0.6rem;
}

.lang-item-name {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-white);
}

.lang-item-level {
  font-size: 0.8rem;
  color: var(--text-gray-400);
}

/* ==========================================================================
   CONTACT CALL TO ACTION CARD
   ========================================================================== */
.contact-cta-card {
  position: relative;
  background: linear-gradient(135deg, rgba(79, 111, 255, 0.18), rgba(11, 19, 43, 0.9) 60%);
  border: 1px solid rgba(79, 111, 255, 0.35);
  border-radius: var(--radius-lg);
  padding: 2.5rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(79, 111, 255, 0.15);
  overflow: hidden;
}

.contact-cta-content h2 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.4rem;
}

.contact-cta-content p {
  color: var(--text-gray-300);
  font-size: 0.98rem;
  max-width: 540px;
}

.btn-contact-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 1.8rem;
  background: var(--primary-blue);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 6px 20px var(--primary-blue-glow);
  transition: all 0.25s ease;
}

.btn-contact-action:hover {
  background: var(--primary-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(79, 111, 255, 0.5);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  padding: 3rem 0;
  border-top: 1px solid rgba(79, 111, 255, 0.12);
  background: rgba(2, 8, 23, 0.95);
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-link {
  color: var(--text-gray-300);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--text-white);
}

.footer-copy {
  color: var(--text-gray-400);
  font-size: 0.82rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MOBILE & TABLET MATCHING THE SPEC & MOCKUP)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .hero-description {
    margin-inline: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-contact-row {
    justify-content: center;
  }

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

  .edu-cert-grid {
    grid-template-columns: 1fr;
  }

  .code-card-floating {
    right: 0;
  }
}

.mobile-only-action {
  display: none;
}

@media (max-width: 768px) {
  .header-container nav {
    margin: 0;
  }

  .mobile-only-action {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
  }

  .nav-menu {
    position: fixed;
    top: calc(var(--header-height) + 0.5rem);
    left: 1rem;
    right: 1rem;
    background: rgba(11, 19, 43, 0.96);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0.75rem;
    border: 1px solid rgba(79, 111, 255, 0.35);
    border-radius: var(--radius-md);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.85), 0 0 35px rgba(79, 111, 255, 0.25);
    transform: translateY(-160%);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    z-index: 999;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 0.85rem 1.2rem;
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--text-gray-100);
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    transition: all 0.25s ease;
  }

  .nav-link:hover,
  .nav-link.active {
    color: var(--text-white);
    background: rgba(79, 111, 255, 0.22);
    border-color: rgba(79, 111, 255, 0.5);
    padding-left: 1.5rem;
  }

  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(79, 111, 255, 0.35);
    border-radius: var(--radius-sm);
    color: var(--text-white);
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  }

  .mobile-menu-toggle:hover,
  .mobile-menu-toggle[aria-expanded="true"] {
    background: var(--primary-blue);
    border-color: var(--cyan-accent);
    box-shadow: 0 0 20px var(--primary-blue-glow);
    color: #fff;
  }

  .btn-header-cv {
    display: none;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

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

  .contact-cta-card {
    flex-direction: column;
    text-align: center;
    padding: 2rem 1.5rem;
  }

  .footer-container {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .code-card-floating {
    position: relative;
    bottom: 0;
    right: 0;
    width: 100%;
    margin-top: 1rem;
  }
}

@media (max-width: 480px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .certs-grid {
    grid-template-columns: 1fr;
  }

  .btn-primary, .btn-outline {
    width: 100%;
    justify-content: center;
  }

  .lang-grid {
    flex-direction: column;
    gap: 0.8rem;
  }
}