/* =============================================
   NYXBO — PREMIUM DESIGN SYSTEM
   Dark/Light Theme, Glassmorphism, Responsive
   ============================================= */

/* ---------- CUSTOM PROPERTIES ---------- */
:root {
  /* Light Theme (default fallback) */
  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e8e8ed;
  --text-primary: #1d1d1f;
  --text-secondary: #515154;
  --text-muted: #86868b;
  --border-color: rgba(0, 0, 0, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
  --glass-blur: blur(20px);
  --accent-primary: #0071e3;
  --accent-secondary: #5e5ce6;
  --accent-tertiary: #ff375f;
  --gradient-1: linear-gradient(135deg, #0071e3, #5e5ce6);
  --gradient-2: linear-gradient(135deg, #ff375f, #ff9f0a);
  --gradient-text: linear-gradient(135deg, #0071e3, #5e5ce6);
  --card-hover-scale: 1.02;
  --nav-height: 72px;
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-muted: #6e6e73;
  --border-color: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(20, 20, 30, 0.65);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --glass-blur: blur(24px);
  --accent-primary: #0a84ff;
  --accent-secondary: #5e5ce6;
  --accent-tertiary: #ff375f;
  --gradient-1: linear-gradient(135deg, #0a84ff, #5e5ce6);
  --gradient-2: linear-gradient(135deg, #ff375f, #ff9f0a);
  --gradient-text: linear-gradient(135deg, #0a84ff, #5e5ce6);
}

[data-theme="light"] {
  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e8e8ed;
  --text-primary: #1d1d1f;
  --text-secondary: #515154;
  --text-muted: #86868b;
  --border-color: rgba(0, 0, 0, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
  --glass-blur: blur(20px);
  --accent-primary: #0071e3;
  --accent-secondary: #5e5ce6;
  --accent-tertiary: #ff375f;
  --gradient-1: linear-gradient(135deg, #0071e3, #5e5ce6);
  --gradient-2: linear-gradient(135deg, #ff375f, #ff9f0a);
  --gradient-text: linear-gradient(135deg, #0071e3, #5e5ce6);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--accent-primary);
  color: white;
  padding: 0.5rem 1rem;
  z-index: 10000;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 0.35rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- GLASS CARD ---------- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}
.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}

/* ---------- NAVBAR ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  height: var(--nav-height);
  transition: background var(--transition-smooth);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
}
.logo-icon {
  color: var(--accent-primary);
}

.nav-links {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.5rem 1rem;
  border-radius: 100px;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-link:hover,
.nav-link.active {
  background: rgba(128,128,128,0.1);
  color: var(--text-primary);
}
.nav-link.active {
  background: var(--accent-primary);
  color: white;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.theme-toggle:hover {
  background: rgba(128,128,128,0.1);
  color: var(--text-primary);
}
.icon-sun, .icon-moon {
  display: none;
}
[data-theme="dark"] .icon-moon { display: block; }
[data-theme="light"] .icon-sun { display: block; }

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: transform 0.3s, opacity 0.3s;
}

@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
  .nav-links {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
    z-index: 999;
  }
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.8rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-smooth);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}
.btn-primary:hover {
  background: var(--accent-secondary);
  box-shadow: 0 8px 20px rgba(94, 92, 230, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}
.btn-outline:hover {
  background: rgba(128,128,128,0.1);
  border-color: var(--text-muted);
}

/* ---------- HERO ---------- */
.hero-section {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-secondary);
}

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  z-index: 0;
}
.hero-orb-1 { width: 500px; height: 500px; background: var(--accent-primary); top: -20%; left: -10%; }
.hero-orb-2 { width: 400px; height: 400px; background: var(--accent-secondary); bottom: -10%; right: -5%; opacity: 0.1; }
.hero-orb-3 { width: 300px; height: 300px; background: var(--accent-tertiary); top: 40%; right: 20%; opacity: 0.08; }

.hero-container {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
  font-weight: 500;
  margin-bottom: 2rem;
}
.badge-dot {
  width: 8px;
  height: 8px;
  background: #34c759;
  border-radius: 50%;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-primary);
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ---------- SERVICES ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  padding: 2rem;
  text-align: left;
}
.service-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.service-card h3 { margin-bottom: 0.5rem; }
.service-card p { color: var(--text-secondary); margin-bottom: 1rem; }
.card-link {
  font-weight: 600;
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* ---------- PORTFOLIO ---------- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}
.portfolio-card {
  padding: 2rem;
  text-align: center;
}
.portfolio-thumb { margin-bottom: 1rem; }
.portfolio-card h3 { margin-bottom: 0.5rem; }
.portfolio-tag {
  display: inline-block;
  background: rgba(128,128,128,0.1);
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  font-size: 0.8rem;
  margin-top: 0.8rem;
  color: var(--text-muted);
}

/* ---------- TOOLS ---------- */
.tools-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.search-wrapper {
  position: relative;
  max-width: 500px;
  width: 100%;
  margin: 0 auto;
}
.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}
.search-input {
  width: 100%;
  padding: 0.9rem 1rem 0.9rem 2.8rem;
  border: 1px solid var(--border-color);
  border-radius: 100px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border var(--transition-fast);
}
.search-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.2);
}
.search-clear {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.cat-filter {
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.cat-filter:hover {
  background: rgba(128,128,128,0.1);
}
.cat-filter.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

.tools-count {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.tool-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 1.2rem;
  transition: all var(--transition-smooth);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: 0 12px 24px rgba(0,0,0,0.08);
}
.tool-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(128,128,128,0.05);
  border-radius: var(--border-radius-sm);
}
.tool-info {
  display: flex;
  flex-direction: column;
}
.tool-info h4 {
  font-size: 1rem;
  margin-bottom: 0.2rem;
}
.tool-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}
.tool-card .tool-category {
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.tools-empty {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

/* ---------- BLOG ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.blog-card { overflow: hidden; }
.blog-card-image { width: 100%; height: 140px; }
.blog-card-body { padding: 1.5rem; }
.blog-date { font-size: 0.8rem; color: var(--text-muted); }
.blog-card-body h3 { margin: 0.5rem 0; }
.blog-cta { text-align: center; }

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.about-content p { margin-bottom: 1.2rem; color: var(--text-secondary); }
.about-values {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}
.value-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 0.5rem 1rem;
  border-radius: 100px;
  font-weight: 500;
}
.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  position: relative;
}
.about-glow {
  position: absolute;
  width: 200px;
  height: 200px;
  background: var(--accent-primary);
  filter: blur(60px);
  opacity: 0.2;
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
.contact-form {
  padding: 2rem;
}
.form-group {
  margin-bottom: 1.2rem;
}
.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 500;
  font-size: 0.9rem;
}
.required { color: var(--accent-tertiary); }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  transition: border var(--transition-fast);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
}
.form-error {
  color: var(--accent-tertiary);
  font-size: 0.8rem;
  margin-top: 0.3rem;
  display: block;
}
.btn-submit {
  width: 100%;
  justify-content: center;
}
.form-success {
  margin-top: 1rem;
  font-weight: 500;
  color: #34c759;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.info-card {
  padding: 1.5rem;
}
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ---------- LEGAL ---------- */
.legal-content {
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}
.legal-content h3 { margin-top: 1.5rem; margin-bottom: 0.5rem; }
.legal-content p { margin-bottom: 1rem; color: var(--text-secondary); }

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 0;
}
.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
}
.footer-brand p { color: var(--text-secondary); max-width: 280px; margin-top: 1rem; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.2rem;
}
.footer-col h4 {
  margin-bottom: 1rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}
.footer-col a {
  display: block;
  color: var(--text-secondary);
  margin-bottom: 0.7rem;
  font-size: 0.95rem;
}
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
    margin-bottom: 1rem;
  }
}

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--accent-primary);
  color: white;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 900;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ---------- ANIMATIONS ---------- */
.animate-fade-in {
  opacity: 0;
  animation: fadeInUp 0.6s forwards;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .section { padding: 3rem 0; }
  .hero-stats { gap: 1.5rem; }
  .stat-number { font-size: 1.5rem; }
}