/* ============================================
   Freelance Web Designer Portfolio
   Premium agency-style styles
   ============================================ */

:root {
  --bg: #0b1120;
  --bg-elevated: #111827;
  --bg-card: #1a2332;
  --surface: #f8fafc;
  --surface-2: #f1f5f9;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dark: #0f172a;
  --text-dark-muted: #475569;
  --accent: #38bdf8;
  --accent-hover: #7dd3fc;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --border: rgba(148, 163, 184, 0.12);
  --border-light: #e2e8f0;
  --whatsapp: #25d366;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.35);
  --font: 'Inter', system-ui, sans-serif;
  --font-display: 'Outfit', system-ui, sans-serif;
  --header-h: 72px;
  --transition: 0.25s ease;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul { list-style: none; }

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.2;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--text-dark);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.25);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline-dark {
  background: transparent;
  color: var(--text-dark);
  border-color: var(--border-light);
}
.btn-outline-dark:hover {
  border-color: var(--text-dark);
  background: var(--surface-2);
}

.btn-light {
  background: #fff;
  color: var(--text-dark);
  border-color: #fff;
}
.btn-light:hover {
  background: var(--surface-2);
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: #fff;
  border-color: var(--whatsapp);
}
.btn-whatsapp:hover {
  background: #1ebe57;
  border-color: #1ebe57;
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 1.85rem;
  font-size: 1.05rem;
}

.btn-full {
  width: 100%;
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(11, 17, 32, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}

.header.scrolled {
  background: rgba(11, 17, 32, 0.95);
  border-bottom-color: var(--border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  color: var(--text);
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  color: var(--text-dark);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  letter-spacing: 0.02em;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

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

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
}
.nav-link:hover,
.nav-link.active {
  color: var(--text);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.25s ease;
}
.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu[hidden] {
  display: none;
}
.mobile-menu.open[hidden] {
  display: flex;
}
.mobile-link {
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--text-muted);
}
.mobile-link:hover {
  color: var(--accent);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(56, 189, 248, 0.12), transparent 50%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(129, 140, 248, 0.08), transparent 50%),
    var(--bg);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 1.35rem;
  color: var(--text);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 2.25rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  z-index: 1;
}
.scroll-indicator {
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.7); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ========== Sections ========== */
.section {
  padding: 5.5rem 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3.5rem;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.85rem;
  color: var(--text);
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ========== Portfolio ========== */
.work-section {
  background: var(--bg-elevated);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(56, 189, 248, 0.2);
}

.project-image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #0f172a;
}
.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.project-card:hover .project-image img {
  transform: scale(1.04);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(11, 17, 32, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.project-card:hover .project-overlay {
  opacity: 1;
}

.project-body {
  padding: 1.5rem 1.4rem 1.6rem;
}

.project-cat {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.1rem;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
}
.project-link:hover {
  color: var(--accent-hover);
}
.project-link svg {
  transition: transform 0.2s ease;
}
.project-link:hover svg {
  transform: translate(2px, -2px);
}

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

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.35rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.25);
  box-shadow: var(--shadow);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}
.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.55rem;
  letter-spacing: -0.015em;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========== Process ========== */
.process-section {
  background: var(--bg-elevated);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.process-step {
  text-align: center;
  padding: 1.5rem 1rem;
}

.step-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.9;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.process-step h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ========== About ========== */
.about-section {
  background: var(--bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
}

.about-content .section-title {
  text-align: left;
  margin-bottom: 1.25rem;
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 1.1rem;
  font-size: 1.05rem;
  line-height: 1.7;
}

.about-content .btn {
  margin-top: 0.75rem;
}

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

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 100%;
  max-width: 320px;
  box-shadow: var(--shadow);
}

.about-stat {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
}
.about-stat:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.about-stat:first-child {
  padding-top: 0;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.about-stat strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
}

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

.contact-header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 3rem;
}

.contact-lead {
  font-size: 1.2rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: 0.5rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3rem;
  align-items: start;
}

.contact-intro {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.contact-actions .btn {
  justify-content: flex-start;
  padding-left: 1.35rem;
}

.contact-form-wrap {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  color: var(--text-dark);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text-dark);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

.form-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-dark-muted);
  line-height: 1.5;
}

/* ========== Footer ========== */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-tagline {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0.75rem 0 0.5rem;
}

.footer-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 280px;
  line-height: 1.6;
}

.footer-links h4 {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-links a {
  display: block;
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0.55rem;
}
.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.35rem 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-card);
  color: var(--text);
  padding: 0.9rem 1.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  font-weight: 500;
  font-size: 0.95rem;
  opacity: 0;
  transition: all 0.3s ease;
  max-width: 90%;
  text-align: center;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.toast[hidden] {
  display: none;
}

/* ========== Scroll reveal ========== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 900px) {
  .process-grid {
    grid-template-columns: 1fr 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-content .section-title {
    text-align: center;
  }
  .about-content {
    text-align: center;
  }
  .about-visual {
    order: -1;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }
  .nav-actions .btn {
    display: none;
  }
  .hamburger {
    display: flex;
  }

  .hero {
    padding-top: calc(var(--header-h) + 2rem);
    min-height: auto;
    padding-bottom: 5rem;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-sub {
    font-size: 1.05rem;
  }
  .hero-ctas {
    flex-direction: column;
  }
  .hero-ctas .btn {
    width: 100%;
  }

  .section {
    padding: 4rem 0;
  }

  .process-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .process-step {
    text-align: left;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0 1rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border);
  }
  .process-step:last-child {
    border-bottom: none;
  }
  .step-num {
    grid-row: 1 / 3;
    font-size: 1.75rem;
    align-self: center;
  }

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .contact-actions .btn {
    width: 100%;
    justify-content: center;
  }
}