/*
Theme Name: Luiz Arnoni - Portfolio
Theme URI: https://tecnoliza.com
Author: Luiz Arnoni
Author URI: https://tecnoliza.com
Description: Portfólio profissional de Luiz Arnoni — Engenheiro de Software com foco em UX, IA e Machine Learning. Tema otimizado para SEO, com animações modernas e design profissional.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: luizarnoni-portfolio
Tags: portfolio, one-page, custom-background, custom-logo
*/

/* ========================================
   CSS VARIABLES & RESET
   ======================================== */
:root {
  --primary: #6C63FF;
  --primary-dark: #5A52D5;
  --primary-light: #8B83FF;
  --accent: #00D4AA;
  --accent-dark: #00B894;
  --dark: #0A0A1A;
  --dark-surface: #12122A;
  --dark-card: #1A1A3E;
  --dark-border: #2A2A5A;
  --text-primary: #EAEAFF;
  --text-secondary: #A0A0CC;
  --text-muted: #6B6B99;
  --gradient-primary: linear-gradient(135deg, #6C63FF 0%, #00D4AA 100%);
  --gradient-dark: linear-gradient(180deg, #0A0A1A 0%, #12122A 100%);
  --gradient-card: linear-gradient(145deg, #1A1A3E 0%, #12122A 100%);
  --shadow-sm: 0 2px 8px rgba(108, 99, 255, 0.08);
  --shadow-md: 0 8px 32px rgba(108, 99, 255, 0.12);
  --shadow-lg: 0 16px 64px rgba(108, 99, 255, 0.16);
  --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.3);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-code: 'JetBrains Mono', 'Fira Code', monospace;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--accent);
}

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

ul, ol {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(108, 99, 255, 0.2); }
  50% { box-shadow: 0 0 40px rgba(108, 99, 255, 0.4); }
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--accent); }
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes slide-in-logos {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes particle-float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(var(--tx), var(--ty)) rotate(360deg); opacity: 0; }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }
.animate-on-scroll.delay-5 { transition-delay: 0.5s; }

/* ========================================
   PARTICLES BACKGROUND
   ======================================== */
.particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0;
  animation: particle-float linear infinite;
}

/* ========================================
   NAVIGATION
   ======================================== */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1002;
  padding: 20px 0;
  transition: all var(--transition-smooth);
  backdrop-filter: blur(0px);
}

.site-nav.scrolled {
  padding: 12px 0;
  background: rgba(10, 10, 26, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--dark-border);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.nav-logo span {
  font-family: var(--font-code);
  font-weight: 400;
  color: var(--text-muted);
  -webkit-text-fill-color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.1);
}

.nav-cta {
  background: var(--gradient-primary) !important;
  color: #fff !important;
  -webkit-text-fill-color: #fff !important;
  padding: 10px 24px !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
  box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md) !important;
}

/* Mobile Menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 100vh;
    height: 100dvh;
    width: 100%;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(10, 10, 26, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: 24px;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.96);
    transition: opacity 0.35s ease, visibility 0.35s ease, transform 0.35s ease;
    z-index: 1000;
  }

  .nav-links.open {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
  }

  .nav-links a {
    width: auto;
    min-width: 180px;
    padding: 14px 24px;
    font-size: 1.1rem;
    text-align: center;
    border-radius: var(--radius-sm);
  }

  .nav-links a:hover,
  .nav-links a.active {
    background: rgba(108, 99, 255, 0.15);
  }

  .nav-links .nav-cta {
    margin-top: 12px;
  }
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 24px;
  animation: fadeInDown 0.6s ease forwards;
  font-family: var(--font-code);
}

.hero-badge .status-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-glow 2s ease infinite;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 8px;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.2s;
  opacity: 0;
}

.hero h1 .gradient-text {
  background: var(--gradient-primary);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-shift 4s ease infinite;
}

.hero-title-line {
  display: block;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.4s;
  opacity: 0;
  line-height: 1.8;
}

.hero-typing {
  font-family: var(--font-code);
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.5s;
  opacity: 0;
}

.hero-typing .cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--accent);
  margin-left: 4px;
  vertical-align: text-bottom;
  animation: blink-caret 0.8s step-end infinite;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.6s;
  opacity: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--dark-border);
}

.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(108, 99, 255, 0.05);
  color: var(--text-primary);
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--dark-border);
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.8s;
  opacity: 0;
}

.hero-stat {
  text-align: left;
}

.hero-stat .number {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 4px;
}

.hero-stat .label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ========================================
   SECTION SHARED STYLES
   ======================================== */
section {
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.section-label::before,
.section-label::after {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--primary);
  opacity: 0.4;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
  line-height: 1.2;
}

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

/* ========================================
   ABOUT SECTION
   ======================================== */
.about {
  background: var(--gradient-dark);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-code-window {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--dark-border);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dot.red { background: #FF5F57; }
.code-dot.yellow { background: #FFBD2E; }
.code-dot.green { background: #28CA41; }

.code-filename {
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: auto;
}

.code-body {
  padding: 24px;
  font-family: var(--font-code);
  font-size: 0.85rem;
  line-height: 1.9;
  overflow-x: auto;
}

.code-body .keyword { color: #C792EA; }
.code-body .function { color: #82AAFF; }
.code-body .string { color: #C3E88D; }
.code-body .property { color: #F78C6C; }
.code-body .comment { color: #546E7A; }
.code-body .bracket { color: #89DDFF; }
.code-body .number { color: #F78C6C; }

.about-text h3 {
  font-size: 1.6rem;
  margin-bottom: 20px;
  font-weight: 700;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.tag {
  padding: 6px 16px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.15);
  border-radius: 100px;
  font-size: 0.82rem;
  color: var(--primary-light);
  font-family: var(--font-code);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: rgba(108, 99, 255, 0.2);
  border-color: rgba(108, 99, 255, 0.3);
  transform: translateY(-2px);
}

/* ========================================
   SKILLS / SPECIALTIES
   ======================================== */
.skills {
  background: var(--dark);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background: var(--gradient-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: rgba(108, 99, 255, 0.3);
  box-shadow: var(--shadow-md);
}

.skill-card:hover::before {
  transform: scaleX(1);
}

.skill-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108, 99, 255, 0.1);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 1.6rem;
}

.skill-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.skill-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========================================
   EDUCATION / TIMELINE
   ======================================== */
.education {
  background: var(--gradient-dark);
}

.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--dark-border);
}

.timeline-item {
  display: flex;
  gap: 32px;
  padding-bottom: 48px;
  position: relative;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.timeline-dot {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--dark-card);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.timeline-dot.active {
  background: var(--gradient-primary);
  border: none;
  animation: pulse-glow 2.5s ease infinite;
}

.timeline-content {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 28px;
  flex: 1;
  transition: all var(--transition-smooth);
}

.timeline-content:hover {
  border-color: rgba(108, 99, 255, 0.3);
  box-shadow: var(--shadow-sm);
}

.timeline-date {
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 8px;
}

.timeline-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-content h4 {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ========================================
   CLIENTS SECTION
   ======================================== */
.clients {
  background: var(--dark);
  overflow: hidden;
}

.clients-track-wrapper {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}

.clients-track {
  display: flex;
  gap: 64px;
  align-items: center;
  animation: slide-in-logos 30s linear infinite;
  width: max-content;
}

.client-logo {
  flex-shrink: 0;
  height: 48px;
  width: auto;
  opacity: 0.4;
  filter: grayscale(100%) brightness(2);
  transition: all var(--transition-smooth);
  cursor: default;
}

.client-logo:hover {
  opacity: 1;
  filter: grayscale(0%) brightness(1);
  transform: scale(1.1);
}

/* Placeholder for logos (before images are added) */
.client-logo-placeholder {
  flex-shrink: 0;
  width: 140px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108, 99, 255, 0.05);
  border: 1px dashed var(--dark-border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-code);
  opacity: 0.6;
  transition: all var(--transition-smooth);
}

.client-logo-placeholder:hover {
  opacity: 1;
  border-color: var(--primary);
}

/* Clients: single harmonious row */
.clients-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 12px 0;
}

.client-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 40px;
  transition: all var(--transition-smooth);
  position: relative;
  flex: 1 1 0;
  min-width: 0;
}

/* Subtle vertical dividers between items */
.client-item + .client-item::after {
  content: '';
  position: absolute;
  left: 0;
  top: 25%;
  height: 50%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--dark-border), transparent);
}

.client-item:hover {
  background: rgba(108, 99, 255, 0.04);
}

.client-item img {
  max-height: 44px;
  max-width: 120px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%) brightness(1.6) opacity(0.6);
  transition: all var(--transition-smooth);
}

.client-item:hover img {
  filter: grayscale(0%) brightness(1) opacity(1);
  transform: scale(1.08);
}

@media (max-width: 768px) {
  .clients-grid {
    flex-wrap: wrap;
    padding: 8px 0;
  }

  .client-item {
    flex: 1 1 45%;
    padding: 20px 24px;
  }

  /* On mobile 2x2, reset dividers for second column items only */
  .client-item + .client-item::after {
    display: none;
  }

  .client-item:nth-child(even)::after {
    content: '';
    display: block;
    position: absolute;
    left: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--dark-border), transparent);
  }

  /* Horizontal divider between rows */
  .client-item:nth-child(n+3) {
    border-top: 1px solid var(--dark-border);
  }

  .client-item img {
    max-height: 36px;
    max-width: 100px;
  }
}

/* ========================================
   CASES / PROJECTS SECTION
   ======================================== */
.cases {
  background: var(--gradient-dark);
  overflow: hidden;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.case-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-smooth);
  position: relative;
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  transform: translateY(-6px);
  border-color: rgba(108, 99, 255, 0.3);
  box-shadow: 0 20px 60px rgba(108, 99, 255, 0.08), 0 8px 24px rgba(0,0,0,0.3);
}

/* --- Case media (image or video) --- */
.case-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--dark-surface);
}

.case-media img,
.case-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.case-card:hover .case-media img,
.case-card:hover .case-media video {
  transform: scale(1.03);
}

/* --- Video controls overlay --- */
.case-video-controls {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 5;
  pointer-events: none;
}

.case-video-mute {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  color: #fff;
  font-size: 0.75rem;
  font-family: var(--font-code);
  cursor: pointer;
  transition: all var(--transition-fast);
  pointer-events: all;
}

.case-video-mute:hover {
  background: rgba(108, 99, 255, 0.6);
  border-color: rgba(108, 99, 255, 0.4);
}

.case-video-mute.is-unmuted .icon-muted { display: none; }
.case-video-mute.is-unmuted .icon-unmuted { display: block !important; }
.case-video-mute.is-unmuted .mute-label { display: none; }

.case-video-speed {
  padding: 6px 12px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  color: var(--accent);
  font-size: 0.72rem;
  font-family: var(--font-code);
  font-weight: 700;
  pointer-events: none;
}

/* --- Case content --- */
.case-content {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-content-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.case-category {
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0;
}

.case-client-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  transition: all var(--transition-smooth);
}

.case-client-logo.logo-bg-white {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(255, 255, 255, 0.3);
}

.case-client-logo img {
  max-height: 28px;
  max-width: 80px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.4);
  transition: filter var(--transition-smooth);
}

.case-client-logo.logo-bg-white img {
  filter: none;
}

.case-card:hover .case-client-logo img {
  filter: brightness(1);
}

.case-card:hover .case-client-logo.logo-bg-white img {
  filter: none;
}

.case-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
}

.case-content p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 20px;
  line-height: 1.7;
  flex: 1;
}

.case-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.case-tech {
  padding: 4px 12px;
  background: rgba(108, 99, 255, 0.08);
  border: 1px solid rgba(108, 99, 255, 0.12);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--primary-light);
  font-family: var(--font-code);
}

.case-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: var(--primary-light);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.case-link:hover {
  gap: 10px;
  color: var(--accent);
}

/* --- Featured case spans full width --- */
.case-card.featured {
  grid-column: 1 / -1;
}

.case-card.featured .case-media {
  aspect-ratio: 21/9;
}

/* --- 3-column row for last 3 cards on desktop --- */
@media (min-width: 1025px) {
  .cases-grid {
    grid-template-columns: repeat(6, 1fr);
  }
  /* First card (featured) - full width */
  .case-card:nth-child(1) { grid-column: 1 / -1; }
  /* Cards 2-3 - half width each */
  .case-card:nth-child(2) { grid-column: span 3; }
  .case-card:nth-child(3) { grid-column: span 3; }
  /* Cards 4-5-6 - one third each */
  .case-card:nth-child(4) { grid-column: span 2; }
  .case-card:nth-child(5) { grid-column: span 2; }
  .case-card:nth-child(6) { grid-column: span 2; }
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact {
  background: var(--dark);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

/* Simplified contact CTA */
.contact-cta {
  display: flex;
  justify-content: center;
  padding-top: 16px;
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 20px 48px;
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
  border-radius: 100px;
  text-decoration: none;
  transition: all var(--transition-smooth);
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.3);
  position: relative;
  overflow: hidden;
}

.btn-whatsapp::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-whatsapp:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 40px rgba(37, 211, 102, 0.4);
  color: #fff;
}

.btn-whatsapp:hover::before {
  opacity: 1;
}

@media (max-width: 768px) {
  .btn-whatsapp {
    padding: 16px 36px;
    font-size: 1rem;
    width: 100%;
    justify-content: center;
  }
}

.contact-info h3 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.contact-info p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 32px;
  line-height: 1.7;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-smooth);
  text-decoration: none;
  color: var(--text-primary);
}

.contact-method:hover {
  border-color: rgba(108, 99, 255, 0.3);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  color: var(--text-primary);
}

.contact-method-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108, 99, 255, 0.1);
  border-radius: var(--radius-sm);
  font-size: 1.4rem;
  flex-shrink: 0;
}

.contact-method-icon.whatsapp {
  background: rgba(37, 211, 102, 0.1);
}

.contact-method-text strong {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.contact-method-text span {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-code);
}

.contact-form {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--gradient-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-main);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
  background: var(--dark-surface);
  border-top: 1px solid var(--dark-border);
  padding: 48px 0 32px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-copy a {
  color: var(--primary-light);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  font-size: 1.1rem;
}

.footer-social a:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .about-grid {
    gap: 40px;
  }
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .case-card:nth-child(n) { grid-column: auto; }
}

@media (max-width: 768px) {
  section {
    padding: 80px 0;
  }

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

  .about-visual {
    order: -1;
  }

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

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

  .case-card:nth-child(n) { grid-column: auto; }

  .case-card.featured {
    grid-column: auto;
  }

  .case-card.featured .case-media {
    aspect-ratio: 16/10;
  }

  .case-video-controls {
    bottom: 8px;
    left: 8px;
    right: 8px;
  }

  .case-video-mute {
    padding: 6px 10px;
    font-size: 0.7rem;
  }

  .mute-label {
    display: none;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 32px;
    flex-wrap: wrap;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .timeline::before {
    left: 24px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .nav-inner {
    padding: 0 16px;
  }

  .hero h1 {
    font-size: 2rem;
    letter-spacing: -1px;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    gap: 0;
    justify-content: space-between;
  }

  .hero-stat .number {
    font-size: 1.5rem;
  }

  .hero-stat .label {
    font-size: 0.75rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .section-description {
    font-size: 0.95rem;
  }

  .contact-form {
    padding: 24px;
  }

  .code-body {
    padding: 16px;
    font-size: 0.75rem;
    overflow-x: auto;
    word-break: break-all;
  }

  .about-code-window {
    animation: none;
  }

  .timeline-item {
    gap: 16px;
  }

  .timeline-dot {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .timeline-content {
    padding: 20px;
  }

  .case-content {
    padding: 20px;
  }

  .btn-whatsapp {
    padding: 14px 24px;
    font-size: 0.95rem;
  }
}

/* ========================================
   SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--dark-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* ========================================
   SELECTION
   ======================================== */
::selection {
  background: rgba(108, 99, 255, 0.3);
  color: #fff;
}

/* ========================================
   PRELOADER
   ======================================== */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-logo {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: pulse-glow 1.5s ease infinite;
}

/* Counter animation */
.counter {
  display: inline-block;
}

/* ========================================
   ENHANCED ANIMATIONS — TCHAN! 🔥
   ======================================== */

/* --- Scroll Progress Bar --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-primary);
  z-index: 10000;
  width: 0%;
  transition: none;
  box-shadow: 0 0 10px rgba(108, 99, 255, 0.5);
}

/* --- Floating WhatsApp Button --- */
.floating-whatsapp {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  cursor: pointer;
  transition: all var(--transition-bounce);
  animation: float 3s ease-in-out infinite, whatsapp-pulse 2s ease infinite;
  text-decoration: none;
  border: none;
}

.floating-whatsapp:hover {
  transform: scale(1.12) translateY(-4px);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.6);
}

.floating-whatsapp:active {
  transform: scale(0.95);
}

.floating-whatsapp svg {
  width: 28px;
  height: 28px;
  fill: #fff;
}

.floating-whatsapp-pulse {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(37, 211, 102, 0.3);
  animation: whatsapp-ring 2s ease infinite;
}

@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6); }
}

@keyframes whatsapp-ring {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.8); opacity: 0; }
}

/* --- Animated Background Mesh Grid --- */
.mesh-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.mesh-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orb-drift linear infinite;
}

.mesh-orb:nth-child(1) {
  width: 500px; height: 500px;
  background: rgba(108, 99, 255, 0.15);
  top: -10%; left: -10%;
  animation-duration: 25s;
}

.mesh-orb:nth-child(2) {
  width: 400px; height: 400px;
  background: rgba(0, 212, 170, 0.10);
  bottom: -10%; right: -5%;
  animation-duration: 30s;
  animation-delay: -10s;
}

.mesh-orb:nth-child(3) {
  width: 300px; height: 300px;
  background: rgba(108, 99, 255, 0.08);
  top: 40%; left: 50%;
  animation-duration: 20s;
  animation-delay: -5s;
}

@keyframes orb-drift {
  0% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(60px, -40px) scale(1.1); }
  50% { transform: translate(-30px, 60px) scale(0.95); }
  75% { transform: translate(-60px, -20px) scale(1.05); }
  100% { transform: translate(0, 0) scale(1); }
}

/* --- Section Dividers: Animated Wave --- */
.section-divider {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  z-index: 1;
}

.section-divider svg {
  position: relative;
  display: block;
  width: 100%;
  height: 60px;
}

.section-divider .wave-fill {
  fill: var(--dark-surface);
}

.section-divider-top {
  top: -1px;
  bottom: auto;
  transform: rotate(180deg);
}

/* --- Animated Gradient Borders on Cards --- */
@property --border-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

.skill-card {
  --border-angle: 0deg;
  background: var(--gradient-card);
  border: 1px solid transparent;
  background-clip: padding-box;
  position: relative;
}

.skill-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-md);
  padding: 1px;
  background: conic-gradient(from var(--border-angle), transparent 40%, var(--primary) 50%, var(--accent) 55%, transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-smooth);
  pointer-events: none;
  z-index: -1;
}

.skill-card:hover::after {
  opacity: 1;
  animation: border-spin 3s linear infinite;
}

@keyframes border-spin {
  to { --border-angle: 360deg; }
}

/* --- Glassmorphism on Nav when scrolled --- */
.site-nav.scrolled {
  background: rgba(10, 10, 26, 0.6) !important;
  backdrop-filter: blur(24px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(180%) !important;
}

/* --- Hero text shimmer --- */
@keyframes text-shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.hero h1 .gradient-text {
  background: linear-gradient(
    90deg,
    #6C63FF 0%,
    #00D4AA 25%,
    #8B83FF 50%,
    #00D4AA 75%,
    #6C63FF 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: text-shimmer 4s linear infinite;
}

/* --- Glowing dot on hero badge --- */
.hero-badge .status-dot {
  position: relative;
}

.hero-badge .status-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: rgba(0, 212, 170, 0.3);
  animation: whatsapp-ring 2.5s ease infinite;
}

/* --- Button ripple effect --- */
.btn {
  position: relative;
  overflow: hidden;
}

.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  transform: scale(0);
  animation: ripple-effect 0.6s ease-out forwards;
  pointer-events: none;
}

@keyframes ripple-effect {
  to { transform: scale(4); opacity: 0; }
}

/* --- Button shine sweep --- */
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover::after {
  left: 100%;
}

/* --- Shake Animation --- */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* --- Code Window: line highlighting --- */
.code-body .code-line {
  display: block;
  padding: 0 4px;
  margin: 0 -4px;
  border-radius: 4px;
  transition: background 0.3s ease;
}

.code-body .code-line:hover {
  background: rgba(108, 99, 255, 0.06);
}

/* --- About code window floating --- */
.about-code-window {
  animation: float 6s ease-in-out infinite;
}

/* --- Skill card icon bounce on hover --- */
.skill-card:hover .skill-icon {
  animation: icon-bounce 0.5s ease;
}

@keyframes icon-bounce {
  0% { transform: scale(1); }
  30% { transform: scale(1.3) rotate(-5deg); }
  50% { transform: scale(0.9) rotate(3deg); }
  70% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* --- Skills: horizontal scroll on mobile --- */
@media (max-width: 768px) {
  .skills-grid {
    grid-template-columns: none !important;
    display: flex !important;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 16px;
    padding-bottom: 16px;
    margin: 0 -24px;
    padding-left: 24px;
    padding-right: 24px;
  }

  .skill-card {
    flex: 0 0 80vw;
    scroll-snap-align: center;
    max-width: 80vw;
  }

  /* Hide scrollbar on mobile for clean look */
  .skills-grid::-webkit-scrollbar {
    display: none;
  }
  .skills-grid {
    -ms-overflow-style: none;
    scrollbar-width: none;
  }

  /* Swipe indicator */
  .skills-grid::after {
    content: '';
    flex: 0 0 1px;
  }
}

/* --- Timeline line glow --- */
.timeline::before {
  background: linear-gradient(to bottom, var(--primary), var(--accent), var(--primary)) !important;
  opacity: 0.3;
  width: 2px !important;
}

/* --- Animated timeline dot --- */
.timeline-dot {
  transition: all var(--transition-bounce);
}

.timeline-item:hover .timeline-dot {
  transform: scale(1.15);
  box-shadow: 0 0 20px rgba(108, 99, 255, 0.3);
}



/* --- Case card image parallax-hint --- */
/* --- Case card hover smooth transform --- */
.case-card {
  counter-increment: case-counter;
}

.case-card .case-content::before {
  content: '0' counter(case-counter);
  position: absolute;
  top: -16px;
  right: 24px;
  font-family: var(--font-code);
  font-size: 4rem;
  font-weight: 900;
  color: rgba(108, 99, 255, 0.06);
  line-height: 1;
  pointer-events: none;
}

.case-card .case-content {
  position: relative;
  overflow: hidden;
}

.cases-grid {
  counter-reset: case-counter;
}

/* --- Contact method: slide-in animation --- */
.contact-method {
  position: relative;
  overflow: hidden;
}

.contact-method::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--gradient-primary);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--transition-smooth);
}

.contact-method:hover::before {
  transform: scaleY(1);
}

/* --- Form input floating label effect --- */
.form-group input:focus + label,
.form-group textarea:focus + label {
  color: var(--primary-light);
}

.form-group input,
.form-group textarea {
  transition: all var(--transition-fast), box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.12), 0 0 20px rgba(108, 99, 255, 0.06);
}

/* --- Footer social icons pop --- */
.footer-social a {
  transition: all var(--transition-bounce);
}

.footer-social a:hover {
  transform: translateY(-4px) scale(1.1);
  background: rgba(108, 99, 255, 0.1);
}

/* --- Scroll-reveal variation: from different directions --- */
.animate-on-scroll.from-left {
  opacity: 0;
  transform: translateX(-40px);
}
.animate-on-scroll.from-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-on-scroll.from-right {
  opacity: 0;
  transform: translateX(40px);
}
.animate-on-scroll.from-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-on-scroll.from-scale {
  opacity: 0;
  transform: scale(0.85);
}
.animate-on-scroll.from-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* --- Mobile touch: active states --- */
@media (hover: none) {
  .skill-card:active {
    transform: scale(0.97);
    border-color: var(--primary);
  }

  .case-card:active {
    transform: scale(0.98);
  }

  .contact-method:active {
    transform: translateX(4px);
    background: rgba(108, 99, 255, 0.05);
  }

  .btn:active {
    transform: scale(0.96);
  }

  .timeline-content:active {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
  }

  .tag:active {
    transform: scale(0.92);
    background: rgba(108, 99, 255, 0.25);
  }

  .footer-social a:active {
    transform: scale(0.9);
    background: var(--primary);
    color: #fff;
  }
}

/* --- Staggered tag entrance --- */
.about-tags .tag {
  opacity: 0;
  transform: translateY(10px) scale(0.9);
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.animate-on-scroll.visible .tag,
.about-tags.tags-visible .tag {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.about-tags .tag:nth-child(1) { transition-delay: 0.05s; }
.about-tags .tag:nth-child(2) { transition-delay: 0.1s; }
.about-tags .tag:nth-child(3) { transition-delay: 0.15s; }
.about-tags .tag:nth-child(4) { transition-delay: 0.2s; }
.about-tags .tag:nth-child(5) { transition-delay: 0.25s; }
.about-tags .tag:nth-child(6) { transition-delay: 0.3s; }
.about-tags .tag:nth-child(7) { transition-delay: 0.35s; }
.about-tags .tag:nth-child(8) { transition-delay: 0.4s; }
.about-tags .tag:nth-child(9) { transition-delay: 0.45s; }
.about-tags .tag:nth-child(10) { transition-delay: 0.5s; }
.about-tags .tag:nth-child(11) { transition-delay: 0.55s; }
.about-tags .tag:nth-child(12) { transition-delay: 0.6s; }
.about-tags .tag:nth-child(13) { transition-delay: 0.65s; }
.about-tags .tag:nth-child(14) { transition-delay: 0.7s; }
.about-tags .tag:nth-child(15) { transition-delay: 0.75s; }
.about-tags .tag:nth-child(16) { transition-delay: 0.8s; }

/* --- Hero stats: stagger + glow --- */
.hero-stat {
  transition: transform var(--transition-bounce);
}

.hero-stat:hover {
  transform: translateY(-4px);
}

.hero-stat:hover .number {
  filter: drop-shadow(0 0 12px rgba(108, 99, 255, 0.4));
}

/* --- Preloader enhanced --- */
.preloader {
  flex-direction: column;
  gap: 24px;
}

.preloader-logo {
  font-size: 3rem !important;
  letter-spacing: -1px;
}

.preloader-bar {
  width: 120px;
  height: 3px;
  background: var(--dark-border);
  border-radius: 3px;
  overflow: hidden;
}

.preloader-bar-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 3px;
  animation: preloader-fill 1s ease forwards;
}

@keyframes preloader-fill {
  from { width: 0%; }
  to { width: 100%; }
}

/* --- Glow line between sections --- */
.glow-line {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), var(--primary), transparent);
  opacity: 0.2;
  margin: 0 auto;
}

/* --- Mobile: Swipe hint for skills --- */
.swipe-hint {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-code);
  animation: swipeHint 2s ease infinite;
}

@keyframes swipeHint {
  0%, 100% { opacity: 0.5; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(8px); }
}

@media (max-width: 768px) {
  .swipe-hint {
    display: flex;
  }
}

/* --- Case card: mouse-follow glow --- */
.case-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    400px circle at var(--glow-x, 50%) var(--glow-y, 50%),
    rgba(108, 99, 255, 0.07) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 1;
  border-radius: inherit;
}

.case-card:hover::after {
  opacity: 1;
}

/* --- Navbar logo hover rotate --- */
.nav-logo {
  transition: all var(--transition-bounce);
}

.nav-logo:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 8px rgba(108, 99, 255, 0.3));
}

/* --- Client glow on hover --- */
.client-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(108, 99, 255, 0.06) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.client-item:hover::before {
  opacity: 1;
}

/* --- Mobile: smooth cards stagger on scroll --- */
@media (max-width: 768px) {
  .cases-grid .case-card:nth-child(1) { transition-delay: 0s; }
  .cases-grid .case-card:nth-child(2) { transition-delay: 0.15s; }
  .cases-grid .case-card:nth-child(3) { transition-delay: 0.3s; }
  .cases-grid .case-card:nth-child(4) { transition-delay: 0.45s; }
  .cases-grid .case-card:nth-child(5) { transition-delay: 0.6s; }
  .cases-grid .case-card:nth-child(6) { transition-delay: 0.75s; }

  .contact-methods .contact-method:nth-child(1) { transition-delay: 0s; }
  .contact-methods .contact-method:nth-child(2) { transition-delay: 0.1s; }
  .contact-methods .contact-method:nth-child(3) { transition-delay: 0.2s; }

  /* Bigger touch targets on mobile */
  .btn {
    padding: 16px 32px;
    font-size: 1rem;
  }

  .floating-whatsapp {
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
  }
}

/* --- Hero: animated border on stats --- */
.hero-stats {
  position: relative;
}

.hero-stats::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), var(--accent), transparent);
  animation: gradient-shift 3s ease infinite;
  background-size: 200% 100%;
}

/* --- Reading progress indicator text --- */
.scroll-progress::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  width: 6px;
  height: 3px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
  box-shadow: 0 0 8px rgba(0, 212, 170, 0.6);
}