/* ============================================
   DevPro - Alex Desenvolvedor
   Custom Styles + Tailwind overrides
   ============================================ */

/* ── Variables ── */
:root {
  --bg-primary:    #070710;
  --bg-secondary:  #0d0d1a;
  --bg-card:       #12121f;
  --bg-card-hover: #1a1a2e;
  --purple:        #8b5cf6;
  --purple-dark:   #7c3aed;
  --purple-light:  #a78bfa;
  --blue:          #3b82f6;
  --blue-light:    #60a5fa;
  --green:         #10b981;
  --border:        rgba(139,92,246,.18);
  --border-blue:   rgba(59,130,246,.18);
  --glow-purple:   rgba(139,92,246,.25);
  --glow-blue:     rgba(59,130,246,.20);
  --text-primary:  #f1f5f9;
  --text-muted:    #94a3b8;
  --text-dim:      #64748b;
  --radius:        14px;
  --radius-sm:     8px;
  --transition:    .3s cubic-bezier(.4,0,.2,1);
}

/* ── 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: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--purple); border-radius: 3px; }

/* ── Selection ── */
::selection { background: rgba(139,92,246,.3); color: #fff; }

/* ── Utilities ── */
.gradient-text {
  background: linear-gradient(135deg, var(--purple-light) 0%, var(--blue-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-purple {
  background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 50%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glow-purple { box-shadow: 0 0 30px var(--glow-purple); }
.glow-blue   { box-shadow: 0 0 30px var(--glow-blue); }

/* ── Background Mesh ── */
.bg-mesh {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 10% 15%, rgba(139,92,246,.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 80%, rgba(59,130,246,.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(139,92,246,.04) 0%, transparent 70%);
}

/* ── Navigation ── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(7,7,16,.75);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(7,7,16,.92);
  box-shadow: 0 4px 30px rgba(0,0,0,.4);
}
.nav-logo {
  font-size: 1.35rem; font-weight: 800; letter-spacing: -.02em;
  background: linear-gradient(135deg, var(--purple-light), var(--blue-light));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  text-decoration: none;
}
.nav-logo span { -webkit-text-fill-color: var(--text-primary); }

.nav-links a {
  font-size: .875rem; font-weight: 500; color: var(--text-muted);
  text-decoration: none; transition: color var(--transition); padding: 0 2px;
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--purple), var(--blue));
  transition: width var(--transition); border-radius: 2px;
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--purple-light); }

.btn-cta-nav {
  display: inline-flex; align-items: center; gap: 6px;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff; font-weight: 600; font-size: .875rem;
  padding: 9px 20px; border-radius: 50px; text-decoration: none;
  transition: var(--transition); border: none; cursor: pointer;
  box-shadow: 0 4px 20px rgba(139,92,246,.35);
}
.btn-cta-nav:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(139,92,246,.5);
}

.theme-btn {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,.06); border: 1px solid var(--border);
  color: var(--text-muted); cursor: pointer; transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.theme-btn:hover { background: rgba(139,92,246,.15); color: var(--purple-light); border-color: var(--border); }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  width: 40px; height: 40px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: rgba(255,255,255,.04); cursor: pointer; align-items: center; justify-content: center;
  transition: var(--transition);
}
.hamburger span {
  width: 20px; height: 2px; background: var(--text-muted); border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

.mobile-menu {
  display: none; position: fixed; top: 72px; left: 0; right: 0;
  background: rgba(7,7,16,.97); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border); padding: 20px 24px 28px;
  z-index: 999;
  flex-direction: column; gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: var(--text-muted); text-decoration: none; font-weight: 500;
  padding: 12px 16px; border-radius: var(--radius-sm); transition: var(--transition);
}
.mobile-menu a:hover { color: #fff; background: rgba(139,92,246,.1); }

/* ── Hero ── */
.hero-section {
  min-height: 100vh; display: flex; align-items: center;
  padding: 100px 0 60px; position: relative; overflow: hidden;
}

.badge-pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(139,92,246,.1); border: 1px solid rgba(139,92,246,.25);
  color: var(--purple-light); font-size: .75rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase;
  padding: 6px 16px; border-radius: 50px;
}
.badge-pill .dot {
  width: 7px; height: 7px; background: var(--green);
  border-radius: 50%; animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(.8); }
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 900; line-height: 1.1; letter-spacing: -.03em;
  color: #fff;
}

.hero-subtitle { font-size: 1.05rem; color: var(--text-muted); max-width: 480px; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff; font-weight: 700; font-size: 1rem;
  padding: 14px 28px; border-radius: 50px; text-decoration: none;
  transition: var(--transition); border: none; cursor: pointer;
  box-shadow: 0 6px 30px rgba(139,92,246,.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(139,92,246,.55);
}
.btn-primary svg { transition: transform var(--transition); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  color: var(--text-primary); font-weight: 700; font-size: 1rem;
  padding: 14px 28px; border-radius: 50px; text-decoration: none;
  transition: var(--transition); cursor: pointer;
}
.btn-secondary:hover {
  background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.2);
  transform: translateY(-2px);
}

.hero-feature {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-muted); font-size: .875rem;
}
.hero-feature svg { color: var(--purple-light); flex-shrink: 0; }
.hero-feature strong { color: var(--text-primary); }

/* ── Hero Visual / Code Cards ── */
.hero-visual {
  position: relative; height: 560px; display: flex;
  align-items: center; justify-content: center;
}

.hero-avatar-glow {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 70% at 50% 50%, rgba(139,92,246,.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero-avatar {
  width: 340px; height: 400px; position: relative; z-index: 2;
  background: linear-gradient(180deg, rgba(139,92,246,.08) 0%, rgba(59,130,246,.06) 100%);
  border-radius: 200px 200px 160px 160px;
  border: 1px solid rgba(139,92,246,.15);
  display: flex; align-items: flex-end; justify-content: center; overflow: hidden;
}

.hero-dev-illustration {
  width: 100%; height: 100%;
  background:
    radial-gradient(ellipse 60% 40% at 50% 30%, rgba(139,92,246,.15) 0%, transparent 60%),
    linear-gradient(180deg, rgba(13,13,26,.0) 0%, rgba(13,13,26,.6) 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 6rem; opacity: .7;
}

.code-card {
  position: absolute; z-index: 3;
  background: rgba(13,13,26,.85);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px; min-width: 160px;
  box-shadow: 0 8px 32px rgba(0,0,0,.4), 0 0 0 1px rgba(255,255,255,.03);
  transition: var(--transition);
}
.code-card:hover { transform: translateY(-4px) scale(1.03); border-color: rgba(139,92,246,.35); }

.code-card .card-header {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 10px; font-weight: 700; font-size: .8rem; color: #fff;
}
.code-card .card-icon {
  width: 28px; height: 28px; border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
}

.code-snippet {
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: .65rem; line-height: 1.6; color: var(--text-dim);
}
.code-snippet .kw  { color: #c792ea; }
.code-snippet .fn  { color: #82aaff; }
.code-snippet .str { color: #c3e88d; }
.code-snippet .tag { color: #f07178; }
.code-snippet .cls { color: #ffcb6b; }

/* Card positions & animations */
.card-react   { top: 5%;  left: -5%;  animation: float1 5s ease-in-out infinite; }
.card-laravel { top: 5%;  right: -8%; animation: float2 6s ease-in-out infinite; }
.card-next    { bottom: 20%; left: -10%; animation: float3 5.5s ease-in-out infinite; }
.card-php     { top: 38%; right: -12%; animation: float4 4.8s ease-in-out infinite; }
.card-ai      { bottom: 5%; right: -5%; animation: float1 7s ease-in-out infinite; }

@keyframes float1 { 0%,100%{transform:translateY(0)}  50%{transform:translateY(-12px)} }
@keyframes float2 { 0%,100%{transform:translateY(0)}  50%{transform:translateY(10px)} }
@keyframes float3 { 0%,100%{transform:translateY(-6px)} 50%{transform:translateY(8px)} }
@keyframes float4 { 0%,100%{transform:translateY(0)}  50%{transform:translateY(-8px)} }

/* ── Section Shared ── */
.section { padding: 90px 0; position: relative; }
.section-badge {
  font-size: .7rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase;
  color: var(--purple-light); margin-bottom: 14px; display: block;
}
.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.7rem);
  font-weight: 900; line-height: 1.15; letter-spacing: -.025em; color: #fff;
  margin-bottom: 16px;
}
.section-subtitle { font-size: 1rem; color: var(--text-muted); max-width: 520px; }

.divider {
  width: 48px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--purple), var(--blue));
  margin: 18px 0;
}

/* ── Feature Cards ── */
.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 28px 24px; cursor: default;
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; inset: 0; opacity: 0;
  background: linear-gradient(135deg, rgba(139,92,246,.05) 0%, rgba(59,130,246,.05) 100%);
  transition: opacity var(--transition);
}
.feature-card:hover {
  border-color: rgba(139,92,246,.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,.35), 0 0 0 1px rgba(139,92,246,.1);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; margin-bottom: 18px;
}
.icon-purple { background: rgba(139,92,246,.15); color: var(--purple-light); }
.icon-blue   { background: rgba(59,130,246,.15);  color: var(--blue-light); }
.icon-green  { background: rgba(16,185,129,.15);  color: #34d399; }
.icon-violet { background: rgba(167,139,250,.12); color: #c4b5fd; }

.feature-card h3 {
  font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 8px;
}
.feature-card p { font-size: .875rem; color: var(--text-muted); line-height: 1.6; }

/* ── Portfolio ── */
.portfolio-section { background: rgba(13,13,26,.5); }

.portfolio-controls { display: flex; gap: 10px; }
.carousel-btn {
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,.05); border: 1px solid var(--border);
  color: var(--text-muted); cursor: pointer; transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.carousel-btn:hover {
  background: rgba(139,92,246,.15); border-color: rgba(139,92,246,.35);
  color: var(--purple-light);
}

.portfolio-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}

.project-card {
  border-radius: var(--radius); overflow: hidden; position: relative;
  aspect-ratio: 4/3; cursor: pointer;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,.06);
}
.project-card:hover { transform: translateY(-4px); border-color: rgba(139,92,246,.3); }
.project-card:hover .project-overlay { opacity: 1; }
.project-card:hover .project-image { transform: scale(1.05); }

.project-image {
  width: 100%; height: 100%; transition: transform .5s ease;
  background-size: cover; background-position: center;
  display: flex; align-items: center; justify-content: center;
}
.project-image-text {
  text-align: center; padding: 20px; font-weight: 800;
  font-size: clamp(.75rem, 2vw, 1rem); line-height: 1.3;
  color: rgba(255,255,255,.9); text-shadow: 0 2px 8px rgba(0,0,0,.5);
  text-transform: uppercase; letter-spacing: .05em;
}

.project-overlay {
  position: absolute; inset: 0; opacity: 0; transition: opacity var(--transition);
  background: rgba(7,7,16,.7); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
}
.project-overlay-icon {
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(139,92,246,.9); display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.2rem;
}

.project-info {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 16px 18px;
  background: linear-gradient(0deg, rgba(7,7,16,.95) 0%, transparent 100%);
}
.project-info h4 { font-size: .9rem; font-weight: 700; color: #fff; margin-bottom: 2px; }
.project-category {
  font-size: .72rem; color: var(--text-dim); font-weight: 500;
}

.btn-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--purple-light); font-weight: 600; font-size: .875rem;
  text-decoration: none; transition: var(--transition);
}
.btn-link:hover { color: #fff; gap: 10px; }

/* ── Technologies ── */
.tech-marquee-wrapper { overflow: hidden; position: relative; }
.tech-marquee-wrapper::before,
.tech-marquee-wrapper::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 120px; z-index: 2;
  pointer-events: none;
}
.tech-marquee-wrapper::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg-primary), transparent);
}
.tech-marquee-wrapper::after {
  right: 0;
  background: linear-gradient(-90deg, var(--bg-primary), transparent);
}

.tech-marquee {
  display: flex; gap: 14px; animation: marquee 34s linear infinite;
  width: max-content; padding: 8px 0;
}
.tech-marquee:hover { animation-play-state: paused; }

/* Items are pre-doubled in HTML, so we animate exactly -50% for a seamless loop */
@keyframes marquee { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }

.tech-pill {
  display: flex; align-items: center; gap: 11px;
  background: var(--bg-card); border: 1px solid rgba(255,255,255,.07);
  border-radius: 50px; padding: 11px 22px; white-space: nowrap;
  font-size: .875rem; font-weight: 600; color: var(--text-muted);
  transition: var(--transition); cursor: default;
}
.tech-pill:hover { border-color: rgba(139,92,246,.3); color: #fff; transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.3); }

/* Devicon Next.js is black by default — make it white in dark mode */
.tech-pill .devicon-nextjs-plain { color: #fff !important; }

/* ── Testimonials ── */
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius); padding: 28px;
  transition: var(--transition);
}
.testimonial-card:hover {
  border-color: rgba(139,92,246,.25); transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0,0,0,.3);
}
.stars { color: #fbbf24; font-size: .9rem; letter-spacing: 2px; margin-bottom: 14px; }
.testimonial-card p { font-size: .9rem; color: var(--text-muted); line-height: 1.7; font-style: italic; }
.testimonial-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 700; color: #fff; flex-shrink: 0;
}
.testimonial-name { font-size: .9rem; font-weight: 700; color: #fff; }
.testimonial-role { font-size: .75rem; color: var(--text-dim); }

/* ── Contact ── */
.contact-section {
  background: rgba(13,13,26,.6);
}

.contact-info-item {
  display: flex; align-items: flex-start; gap: 14px; margin-bottom: 28px;
}
.contact-info-icon {
  width: 46px; height: 46px; border-radius: 12px; flex-shrink: 0;
  background: rgba(139,92,246,.1); border: 1px solid rgba(139,92,246,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: var(--purple-light);
}
.contact-info-item h4 { font-size: .875rem; font-weight: 700; color: #fff; margin-bottom: 2px; }
.contact-info-item p  { font-size: .875rem; color: var(--text-muted); }
.contact-info-item a  { color: var(--purple-light); text-decoration: none; transition: color var(--transition); }
.contact-info-item a:hover { color: #fff; }

.contact-form-wrapper {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 18px; padding: 36px;
}

.form-group { margin-bottom: 18px; }
.form-label {
  display: block; font-size: .8rem; font-weight: 600; color: var(--text-muted);
  margin-bottom: 7px; text-transform: uppercase; letter-spacing: .06em;
}
.form-input, .form-textarea, .form-select {
  width: 100%; background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: .9rem; font-family: inherit;
  padding: 12px 16px; transition: var(--transition); outline: none;
  -webkit-appearance: none;
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-dim); }
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: rgba(139,92,246,.5);
  background: rgba(139,92,246,.05);
  box-shadow: 0 0 0 3px rgba(139,92,246,.12);
}
.form-textarea { resize: vertical; min-height: 130px; }
.form-select option { background: var(--bg-card); }

.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.btn-submit {
  width: 100%; padding: 14px; font-size: 1rem; font-weight: 700;
  border: none; cursor: pointer;
}

.form-message {
  display: none; padding: 14px 18px; border-radius: var(--radius-sm);
  font-size: .875rem; font-weight: 600; margin-top: 14px; text-align: center;
}
.form-message.success { background: rgba(16,185,129,.1); border: 1px solid rgba(16,185,129,.2); color: #34d399; }
.form-message.error   { background: rgba(239,68,68,.1);   border: 1px solid rgba(239,68,68,.2);  color: #f87171; }

/* ── Stats Bar ── */
.stats-bar {
  background: rgba(13,13,26,.8); border-top: 1px solid rgba(255,255,255,.04);
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.stat-item { text-align: center; padding: 28px 0; }
.stat-number {
  font-size: 2.2rem; font-weight: 900; letter-spacing: -.04em;
  background: linear-gradient(135deg, var(--purple-light), var(--blue-light));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  display: block;
}
.stat-label { font-size: .8rem; color: var(--text-muted); font-weight: 500; margin-top: 4px; }

/* ── Footer ── */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,.05);
  padding: 60px 0 28px;
}
.footer-logo-desc { font-size: .875rem; color: var(--text-muted); max-width: 280px; line-height: 1.7; }
.footer-social {
  display: flex; gap: 10px; margin-top: 20px;
}
.social-btn {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: .9rem; text-decoration: none;
  transition: var(--transition);
}
.social-btn:hover { background: rgba(139,92,246,.15); color: var(--purple-light); border-color: rgba(139,92,246,.3); transform: translateY(-2px); }

.footer-title { font-size: .8rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; color: var(--text-primary); margin-bottom: 16px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links li a { font-size: .875rem; color: var(--text-muted); text-decoration: none; transition: color var(--transition); }
.footer-links li a:hover { color: var(--purple-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.05); margin-top: 44px; padding-top: 22px; }
.footer-copy { font-size: .8rem; color: var(--text-dim); }

/* ── Back to top ── */
#back-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 900;
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  border: none; color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 24px rgba(139,92,246,.5);
  opacity: 0; transform: translateY(20px);
  transition: opacity .3s, transform .3s;
}
#back-top.visible { opacity: 1; transform: translateY(0); }
#back-top:hover { transform: translateY(-3px) !important; }

/* ── Animations ── */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .hero-visual { height: 480px; }
  .card-react   { left: -2%; }
  .card-next    { left: -4%; }
  .card-php     { right: -6%; }
  .card-laravel { right: -4%; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links, .nav-right { display: none !important; }

  .hero-section { padding: 90px 0 50px; }
  .hero-visual { display: none; }

  .portfolio-grid { grid-template-columns: 1fr 1fr; }
  .form-grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 500px) {
  .portfolio-grid { grid-template-columns: 1fr; }
  .contact-form-wrapper { padding: 24px; }
}

/* ════════════════════════════════════════
   4 GRIDS SECTION
════════════════════════════════════════ */
.qgrid-section {
  padding: 0 0 80px;
}

.qgrid-wrapper {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

/* ── Base card ── */
.qgrid-card {
  position: relative; border-radius: 20px; overflow: hidden;
  min-height: 460px; display: flex; flex-direction: column;
  padding: 34px 30px 30px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.06);
  cursor: pointer;
  transition: transform .4s cubic-bezier(.4,0,.2,1),
              box-shadow .4s cubic-bezier(.4,0,.2,1),
              border-color .4s;
}

/* Gradient top line */
.qgrid-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; transition: height .5s ease, opacity .5s;
  z-index: 0;
}
/* Subtle background glow on hover */
.qgrid-card::after {
  content: ''; position: absolute; inset: 0; opacity: 0;
  transition: opacity .5s;
  z-index: 0; border-radius: 20px;
}

.qgrid-card > * { position: relative; z-index: 1; }

.qgrid-card:hover { transform: translateY(-10px); }
.qgrid-card:hover::before { height: 5px; }
.qgrid-card:hover::after  { opacity: 1; }

/* ── Color variants ── */
.qg-purple::before { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.qg-purple::after  { background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(139,92,246,.10) 0%, transparent 70%); }
.qg-purple:hover   { box-shadow: 0 24px 60px rgba(139,92,246,.22), 0 0 0 1px rgba(139,92,246,.18); border-color: rgba(139,92,246,.25); }

.qg-blue::before   { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.qg-blue::after    { background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(59,130,246,.10) 0%, transparent 70%); }
.qg-blue:hover     { box-shadow: 0 24px 60px rgba(59,130,246,.22), 0 0 0 1px rgba(59,130,246,.18); border-color: rgba(59,130,246,.25); }

.qg-cyan::before   { background: linear-gradient(90deg, #06b6d4, #67e8f9); }
.qg-cyan::after    { background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(6,182,212,.10) 0%, transparent 70%); }
.qg-cyan:hover     { box-shadow: 0 24px 60px rgba(6,182,212,.22), 0 0 0 1px rgba(6,182,212,.18); border-color: rgba(6,182,212,.25); }

.qg-green::before  { background: linear-gradient(90deg, #25D366, #34d399); }
.qg-green::after   { background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(37,211,102,.10) 0%, transparent 70%); }
.qg-green:hover    { box-shadow: 0 24px 60px rgba(37,211,102,.22), 0 0 0 1px rgba(37,211,102,.18); border-color: rgba(37,211,102,.25); }

/* ── Decorative number ── */
.qgrid-number {
  position: absolute; top: 16px; right: 22px;
  font-size: 5.5rem; font-weight: 900; line-height: 1;
  color: #fff; opacity: .035; pointer-events: none;
  font-variant-numeric: tabular-nums;
  transition: opacity .4s;
}
.qgrid-card:hover .qgrid-number { opacity: .06; }

/* ── Icon ── */
.qgrid-icon {
  width: 60px; height: 60px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px; flex-shrink: 0;
  transition: transform .4s cubic-bezier(.34,1.56,.64,1);
}
.qgrid-card:hover .qgrid-icon { transform: scale(1.12) rotate(-6deg); }

.qi-purple { background: rgba(139,92,246,.15); color: #a78bfa; border: 1px solid rgba(139,92,246,.2); }
.qi-blue   { background: rgba(59,130,246,.15);  color: #60a5fa; border: 1px solid rgba(59,130,246,.2); }
.qi-cyan   { background: rgba(6,182,212,.15);   color: #67e8f9; border: 1px solid rgba(6,182,212,.2); }
.qi-green  { background: rgba(37,211,102,.15);  color: #25D366; border: 1px solid rgba(37,211,102,.2); }

/* ── Tag / badge ── */
.qgrid-tag {
  font-size: .65rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--text-dim); margin-bottom: 10px;
}

/* ── Title ── */
.qgrid-card h3 {
  font-size: 1.3rem; font-weight: 800; color: #fff; line-height: 1.25;
  letter-spacing: -.02em; margin-bottom: 14px;
}

/* ── Description ── */
.qgrid-card p {
  font-size: .875rem; color: var(--text-muted); line-height: 1.7;
  flex-grow: 1;
}

/* ── Stats row (grid 1) ── */
.qgrid-stats {
  display: flex; gap: 16px; margin: 20px 0 4px; flex-wrap: wrap;
}
.qgrid-stat { text-align: center; }
.qgs-number { display: block; font-size: 1.4rem; font-weight: 900; color: #fff; letter-spacing: -.03em; }
.qgs-label  { font-size: .68rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .08em; font-weight: 600; }

/* ── Project preview (grid 2) ── */
.qgrid-preview {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin: 18px 0 4px;
  border-radius: 10px; overflow: hidden;
}
.qgp-item {
  padding: 10px 8px; font-size: .65rem; font-weight: 700; color: rgba(255,255,255,.7);
  text-transform: uppercase; letter-spacing: .05em;
  transition: color .3s;
}
.qgrid-card:hover .qgp-item { color: rgba(255,255,255,.9); }

/* ── Steps (grid 3) ── */
.qgrid-steps {
  display: flex; align-items: center; gap: 10px; margin: 20px 0 4px; flex-wrap: wrap;
}
.qgs-step {
  display: flex; align-items: center; gap: 7px;
  font-size: .78rem; color: var(--text-muted); font-weight: 600;
}
.qgss-num {
  width: 26px; height: 26px; border-radius: 50%;
  background: rgba(6,182,212,.15); border: 1px solid rgba(6,182,212,.25);
  color: #67e8f9; font-size: .75rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.qgs-arrow { color: var(--text-dim); font-size: .8rem; }

/* ── Contact info (grid 4) ── */
.qgrid-contact-info {
  display: flex; flex-direction: column; gap: 10px; margin: 20px 0 4px;
}
.qci-item {
  display: flex; align-items: center; gap: 10px;
  font-size: .85rem; color: var(--text-muted);
}

/* ── CTA buttons inside grids ── */
.qgrid-cta {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .875rem; font-weight: 700; padding: 12px 22px;
  border-radius: 50px; text-decoration: none; margin-top: 24px;
  border: 2px solid; transition: all .35s cubic-bezier(.4,0,.2,1);
  align-self: flex-start;
}
.qgrid-cta svg { transition: transform .3s; }
.qgrid-cta:hover svg { transform: translateX(4px); }

.qgc-purple { color: #a78bfa; border-color: rgba(139,92,246,.35); background: rgba(139,92,246,.07); }
.qgc-purple:hover { background: rgba(139,92,246,.18); border-color: rgba(139,92,246,.6); color: #c4b5fd; }

.qgc-blue   { color: #60a5fa; border-color: rgba(59,130,246,.35); background: rgba(59,130,246,.07); }
.qgc-blue:hover { background: rgba(59,130,246,.18); border-color: rgba(59,130,246,.6); color: #93c5fd; }

.qgc-cyan   { color: #67e8f9; border-color: rgba(6,182,212,.35); background: rgba(6,182,212,.07); }
.qgc-cyan:hover { background: rgba(6,182,212,.18); border-color: rgba(6,182,212,.6); color: #a5f3fc; }

/* ── WhatsApp button (grid 4) ── */
.btn-whatsapp {
  display: inline-flex; align-items: center; gap: 10px;
  background: #25D366; color: #fff;
  font-size: .95rem; font-weight: 700;
  padding: 14px 24px; border-radius: 50px;
  text-decoration: none; margin-top: 24px; align-self: flex-start;
  box-shadow: 0 6px 24px rgba(37,211,102,.3);
  transition: all .35s cubic-bezier(.4,0,.2,1);
  border: none;
}
.btn-whatsapp:hover {
  background: #1fba58; transform: translateY(-3px) scale(1.03);
  box-shadow: 0 14px 36px rgba(37,211,102,.45);
}

/* ── Minimal footer ── */
.footer-minimal {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255,255,255,.05);
  padding: 24px 0;
}

/* ── Responsive ── */
@media (max-width: 1100px) {
  .qgrid-wrapper { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .qgrid-wrapper { grid-template-columns: 1fr; }
  .qgrid-card { min-height: auto; }
}

/* ── Light theme support ── */
body.light {
  --bg-primary:   #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card:      #ffffff;
  --bg-card-hover:#f8fafc;
  --text-primary: #0f172a;
  --text-muted:   #475569;
  --text-dim:     #94a3b8;
  --border:       rgba(100,116,139,.15);
}
body.light #navbar { background: rgba(248,250,252,.85); border-bottom-color: rgba(0,0,0,.08); }
body.light .bg-mesh { opacity: .4; }
body.light .code-card { background: rgba(255,255,255,.9); border-color: rgba(139,92,246,.2); }
body.light .code-snippet { color: #475569; }