/* ============================================================
   MUSUBI.IO — Premium Landing Page Stylesheet
   Design System: Dark Navy / Electric Teal / Deep Violet
   Style: B2B SaaS — Minimalist, Precise, Japanese-Inspired
   ============================================================ */

/* ----- Custom Properties (Design Tokens) ----- */
:root {
  /* Palette */
  --bg-primary:       #0A0F2C;
  --bg-secondary:     #0D1333;
  --bg-card:          rgba(13, 19, 51, 0.55);
  --bg-footer:        #070B22;

  --accent-teal:      #00D4C8;
  --accent-teal-rgb:  0, 212, 200;
  --accent-violet:    #7B5EA7;
  --accent-violet-rgb:123, 94, 167;

  --text-primary:     #FFFFFF;
  --text-secondary:   #A8B2C8;
  --text-muted:       #6B7A99;

  /* Typography */
  --font-body:        'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --section-py:       100px;
  --section-px:       clamp(1.25rem, 5vw, 6rem);
  --container-max:    1200px;

  /* Radii */
  --radius-sm:        6px;
  --radius-md:        12px;
  --radius-lg:        20px;
  --radius-full:      9999px;

  /* Transitions */
  --ease-out:         cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast:  0.25s var(--ease-out);
  --transition-base:  0.4s var(--ease-out);
  --transition-slow:  0.6s var(--ease-out);

  /* Shadows */
  --shadow-card:      0 4px 30px rgba(0, 0, 0, 0.25);
  --shadow-card-hover:0 12px 50px rgba(0, 212, 200, 0.12),
                      0 4px 20px rgba(0, 0, 0, 0.35);
  --glow-teal:        0 0 20px rgba(var(--accent-teal-rgb), 0.35),
                      0 0 60px rgba(var(--accent-teal-rgb), 0.10);
  --glow-teal-intense:0 0 25px rgba(var(--accent-teal-rgb), 0.50),
                      0 0 80px rgba(var(--accent-teal-rgb), 0.18);

  /* Navbar */
  --navbar-height:    72px;
}


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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

/* Selection */
::selection {
  background: rgba(var(--accent-teal-rgb), 0.30);
  color: var(--text-primary);
}

::-moz-selection {
  background: rgba(var(--accent-teal-rgb), 0.30);
  color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(var(--accent-teal-rgb), 0.35);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(var(--accent-teal-rgb), 0.55);
}

/* Firefox scrollbar */
html {
  scrollbar-width: thin;
  scrollbar-color: rgba(var(--accent-teal-rgb), 0.35) var(--bg-primary);
}


/* ============================================================
   UTILITY — CONTAINER
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--section-px);
}


/* ============================================================
   SCROLL REVEAL — FADE IN
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  will-change: opacity, transform;
}

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


/* ============================================================
   1. NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  transition: background var(--transition-base),
              box-shadow var(--transition-base),
              backdrop-filter var(--transition-base);
}

.navbar.scrolled {
  background: rgba(10, 15, 44, 0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: 0 1px 0 rgba(var(--accent-teal-rgb), 0.08),
              0 4px 30px rgba(0, 0, 0, 0.30);
}

.navbar .container,
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--section-px);
}

/* Logo */
.logo,
.nav-logo,
.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  position: relative;
  z-index: 1001;
}

.logo .io,
.nav-logo .io,
.footer-logo .io {
  color: var(--accent-teal);
  font-weight: 800;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a,
.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent-teal);
  border-radius: 1px;
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Nav CTA */
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--bg-primary);
  background: var(--accent-teal);
  border-radius: var(--radius-full);
  transition: box-shadow var(--transition-base),
              transform var(--transition-fast),
              background var(--transition-fast);
}

.nav-cta:hover {
  background: #00E8DA;
  box-shadow: var(--glow-teal);
  transform: translateY(-1px);
}

.nav-cta:active {
  transform: translateY(0) scale(0.98);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 1001;
  cursor: pointer;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-fast),
              opacity var(--transition-fast);
  transform-origin: center;
}

.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);
}


/* ============================================================
   2. HERO
   ============================================================ */
#hero,
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--navbar-height);
}

/* Particle canvas */
#particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Subtle radial gradient overlay for depth */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 45%, rgba(var(--accent-teal-rgb), 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 80% 20%, rgba(var(--accent-violet-rgb), 0.06) 0%, transparent 60%);
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  padding-inline: var(--section-px);
}

/* Hero headline */
.hero-content h1,
.hero-headline {
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.hero-content h1 .highlight,
.hero-headline .highlight,
.highlight {
  background: linear-gradient(135deg, var(--accent-teal), #5BFFF0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Hero subtitle */
.hero-content p,
.hero-subheadline {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

/* Hero CTAs */
.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero entrance animation */
.hero-content {
  animation: heroFadeIn 1s var(--ease-out) 0.2s both;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


/* ============================================================
   BUTTONS (shared)
   ============================================================ */
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.3px;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  color: var(--bg-primary);
  background: var(--accent-teal);
  box-shadow: 0 0 0 0 rgba(var(--accent-teal-rgb), 0);
}

.btn-primary:hover {
  background: #00E8DA;
  box-shadow: var(--glow-teal-intense);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0) scale(0.97);
  box-shadow: var(--glow-teal);
}

.btn-ghost {
  color: var(--accent-teal);
  background: transparent;
  border: 1.5px solid rgba(var(--accent-teal-rgb), 0.4);
}

.btn-ghost:hover {
  border-color: var(--accent-teal);
  background: rgba(var(--accent-teal-rgb), 0.06);
  box-shadow: 0 0 30px rgba(var(--accent-teal-rgb), 0.08);
  transform: translateY(-2px);
}

.btn-ghost:active {
  transform: translateY(0) scale(0.97);
}


/* ============================================================
   SECTION — SHARED
   ============================================================ */
section {
  padding: var(--section-py) 0;
  position: relative;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent-teal);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.8px;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

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

.section-header .section-subtitle {
  margin-inline: auto;
}


/* ============================================================
   3. ABOUT (#sobre)
   ============================================================ */
#sobre {
  display: flex;
  justify-content: center;
}

#sobre .container {
  max-width: 800px;
  text-align: center;
}

/* Decorative teal line */
#sobre .container::before {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-teal), rgba(var(--accent-teal-rgb), 0.3));
  border-radius: 2px;
  margin: 0 auto 2.5rem;
}

#sobre .section-title {
  margin-bottom: 1.5rem;
}

#sobre .about-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

#sobre .about-text strong,
#sobre .about-text span.accent {
  color: var(--text-primary);
  font-weight: 600;
}

#sobre .about-text span.teal {
  color: var(--accent-teal);
  font-weight: 600;
}


/* Section Label with line */
.section-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.label-line {
  display: inline-block;
  width: 32px;
  height: 2px;
  background: var(--accent-teal);
  border-radius: 2px;
}

.label-text {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent-teal);
}

/* About title */
.about-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.8px;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

/* About text paragraphs */
.about-content .about-text p {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

.about-content .about-text p:last-child {
  margin-bottom: 0;
}

/* About decoration — kanji symbol */
.about-decoration {
  margin-top: 2.5rem;
}

.knot-symbol {
  font-size: 4rem;
  color: rgba(var(--accent-teal-rgb), 0.12);
  line-height: 1;
  user-select: none;
  animation: float 6s ease-in-out infinite;
}

/* Text utility classes */
.text-white {
  color: var(--text-primary) !important;
  font-weight: 600;
}

.text-teal {
  color: var(--accent-teal) !important;
  font-weight: 600;
  font-style: normal;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(var(--accent-teal-rgb), 0.3);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 3px;
  height: 8px;
  background: var(--accent-teal);
  border-radius: 3px;
  animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
  0% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.3; }
  100% { transform: translateY(0); opacity: 1; }
}

/* Contact Wrapper */
.contact-wrapper {
  max-width: 560px;
  margin-inline: auto;
  position: relative;
}

/* Form Labels */
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
  text-align: left;
}

/* Contact tagline */
.contact-tagline {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
  letter-spacing: 0.3px;
}

/* Form success message */
.form-success {
  display: none;
  text-align: center;
  padding: 3rem 2rem;
  animation: fadeInUp 0.5s ease forwards;
}

.form-success.show {
  display: block;
}

.form-success .success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background: rgba(var(--accent-teal-rgb), 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-teal);
}

.form-success .success-icon svg {
  width: 32px;
  height: 32px;
}

.form-success h3 {
  color: var(--accent-teal);
  margin-bottom: 0.5rem;
  font-size: 1.4rem;
}

.form-success p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

/* Button submit */
.btn-submit {
  align-self: center;
  min-width: 220px;
  margin-top: 0.5rem;
}


/* ============================================================
   4. SERVICES (#servicos)
   ============================================================ */
#servicos {
  background:
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(var(--accent-violet-rgb), 0.04) 0%, transparent 70%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

/* Service Card — Glassmorphism */
.service-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
  overflow: hidden;
}

/* Decorative gradient shimmer on hover */
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(var(--accent-teal-rgb), 0) 0%,
    rgba(var(--accent-teal-rgb), 0.03) 50%,
    rgba(var(--accent-teal-rgb), 0) 100%
  );
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(var(--accent-teal-rgb), 0.15);
}

.service-card:hover::before {
  opacity: 1;
}

/* Icon */
.service-icon,
.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-teal);
  background: rgba(var(--accent-teal-rgb), 0.08);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  transition: background var(--transition-fast),
              box-shadow var(--transition-fast);
}

.card-icon svg {
  width: 32px;
  height: 32px;
}

.service-card:hover .service-icon,
.service-card:hover .card-icon {
  background: rgba(var(--accent-teal-rgb), 0.14);
  box-shadow: 0 0 20px rgba(var(--accent-teal-rgb), 0.10);
}

.service-card h3,
.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  letter-spacing: -0.3px;
}

.service-card p,
.card-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.card-line {
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-teal), transparent);
  margin-top: 1.5rem;
  border-radius: 2px;
  opacity: 0.4;
  transition: width var(--transition-base), opacity var(--transition-base);
}

.service-card:hover .card-line {
  width: 60px;
  opacity: 0.7;
}


/* ============================================================
   5. DIFFERENTIALS (#diferenciais)
   ============================================================ */
#diferenciais {
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(var(--accent-teal-rgb), 0.03) 0%, transparent 60%);
}

.differentials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.differential-item,
.diff-item {
  text-align: center;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Icon Circle */
.differential-icon,
.diff-icon {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  border: 1.5px solid rgba(var(--accent-teal-rgb), 0.3);
  font-size: 1.6rem;
  color: var(--accent-teal);
  background: rgba(var(--accent-teal-rgb), 0.04);
  transition: border-color var(--transition-base),
              background var(--transition-base),
              box-shadow var(--transition-base),
              transform var(--transition-base);
  flex-shrink: 0;
}

.diff-icon svg {
  width: 28px;
  height: 28px;
}

.differential-item:hover .differential-icon,
.diff-item:hover .diff-icon {
  border-color: var(--accent-teal);
  background: rgba(var(--accent-teal-rgb), 0.08);
  box-shadow: 0 0 30px rgba(var(--accent-teal-rgb), 0.12);
  transform: translateY(-3px);
}

.differential-item h3,
.diff-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.2px;
}

.differential-item p,
.diff-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 280px;
  margin-inline: auto;
}


/* ============================================================
   6. CONTACT (#contato)
   ============================================================ */
#contato {
  display: flex;
  justify-content: center;
  background:
    radial-gradient(ellipse 50% 60% at 50% 80%, rgba(var(--accent-violet-rgb), 0.05) 0%, transparent 70%);
}

#contato .container {
  max-width: 600px;
  text-align: center;
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin-top: 2.5rem;
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 0.25rem;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: transparent;
  border: none;
  border-bottom: 1.5px solid rgba(255, 255, 255, 0.12);
  border-radius: 0;
  transition: border-color var(--transition-fast);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--accent-teal);
  outline: none;
}

/* Focus glow line */
.form-group input:focus ~ .focus-line,
.form-group textarea:focus ~ .focus-line {
  transform: scaleX(1);
}

.focus-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-teal), rgba(var(--accent-violet-rgb), 0.6));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
  pointer-events: none;
}

.contact-form .btn-primary {
  align-self: center;
  min-width: 220px;
  margin-top: 0.5rem;
}

.contact-tagline {
  margin-top: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.3px;
}


/* ============================================================
   7. FOOTER
   ============================================================ */
.footer {
  background: var(--bg-footer);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 3rem 0 2rem;
  text-align: center;
}

.footer .logo,
.footer-logo {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

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

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-teal);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1.5rem;
}

.footer-bottom p,
.footer-copyright {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.2);
  letter-spacing: 0.4px;
}

.footer-copyright a {
  color: var(--accent-teal);
  transition: color var(--transition-fast);
}

.footer-copyright a:hover {
  color: #5BFFF0;
}


/* ============================================================
   DECORATIVE — Gradient Orbs (optional ambient bg elements)
   ============================================================ */
.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

.gradient-orb--teal {
  background: rgba(var(--accent-teal-rgb), 0.06);
}

.gradient-orb--violet {
  background: rgba(var(--accent-violet-rgb), 0.06);
}


/* ============================================================
   RESPONSIVE — TABLET & BELOW (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --section-py: 70px;
  }

  /* Navbar */
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100vh;
    height: 100dvh;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    background: rgba(10, 15, 44, 0.97);
    backdrop-filter: blur(30px) saturate(1.4);
    -webkit-backdrop-filter: blur(30px) saturate(1.4);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 1000;
  }

  .nav-links.open,
  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.1rem;
  }

  /* Overlay */
  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
  }

  .nav-overlay.active {
    opacity: 1;
    pointer-events: all;
  }

  /* Hero */
  .hero-content h1 {
    letter-spacing: -1px;
  }

  .hero-ctas {
    flex-direction: column;
    gap: 0.75rem;
  }

  .btn-primary,
  .btn-ghost {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  /* Differentials */
  .differentials-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}


/* ============================================================
   RESPONSIVE — MOBILE SMALL (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  :root {
    --section-py: 56px;
    --navbar-height: 60px;
  }

  .logo {
    font-size: 1.3rem;
  }

  .hero-content h1 {
    letter-spacing: -0.5px;
  }

  .hero-content p {
    font-size: 0.95rem;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .service-card {
    padding: 1.75rem 1.5rem;
  }

  .contact-form {
    gap: 1.25rem;
  }
}


/* ============================================================
   ANIMATIONS — EXTRAS
   ============================================================ */

/* Gentle pulse for teal elements */
@keyframes subtlePulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.7; }
}

/* Float animation for decorative elements */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

/* Gradient text shimmer — opt-in via class */
.text-shimmer {
  background: linear-gradient(
    90deg,
    var(--accent-teal) 0%,
    #5BFFF0 25%,
    var(--accent-violet) 50%,
    var(--accent-teal) 75%,
    #5BFFF0 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
}

@keyframes shimmer {
  to { background-position: -200% center; }
}

/* Staggered fade-in for grid children */
.services-grid .fade-in:nth-child(1) { transition-delay: 0.1s; }
.services-grid .fade-in:nth-child(2) { transition-delay: 0.2s; }
.services-grid .fade-in:nth-child(3) { transition-delay: 0.3s; }

.differentials-grid .fade-in:nth-child(1) { transition-delay: 0.1s; }
.differentials-grid .fade-in:nth-child(2) { transition-delay: 0.2s; }
.differentials-grid .fade-in:nth-child(3) { transition-delay: 0.3s; }


/* ============================================================
   ACCESSIBILITY — REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }
}