/* ═══════════════════════════════════════════
   Dayana Lakshmi Angadala — Portfolio Styles
   ═══════════════════════════════════════════ */

/* ─── Variables ─── */
:root {
  --primary: #6C63FF;
  --primary-light: #8B85FF;
  --primary-dark: #4A42DB;
  --secondary: #00D4AA;
  --secondary-light: #33DFBB;
  --accent: #FF6B6B;
  --accent-orange: #FF8C42;
  --bg-dark: #0a0a1a;
  --bg-darker: #060612;
  --bg-card: rgba(255,255,255,0.03);
  --bg-glass: rgba(255,255,255,0.05);
  --border-glass: rgba(255,255,255,0.08);
  --text-primary: #ffffff;
  --text-secondary: rgba(255,255,255,0.7);
  --text-muted: rgba(255,255,255,0.4);
  --gradient-1: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  --gradient-2: linear-gradient(135deg, var(--accent) 0%, var(--accent-orange) 100%);
  --gradient-hero: linear-gradient(135deg, #0a0a1a 0%, #1a0a2e 30%, #0a1a2e 60%, #0a0a1a 100%);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-glow: 0 0 40px rgba(108,99,255,0.15);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html { scroll-behavior: smooth; scrollbar-width: thin; scrollbar-color: var(--primary) transparent; }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; line-height: 1.2; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.gradient-text {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Preloader ─── */
.preloader {
  position: fixed; inset: 0; z-index: 99999;
  background: var(--bg-darker);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-ring {
  width: 60px; height: 60px; border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: var(--primary);
  border-right-color: var(--secondary);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Navigation ─── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
  padding: 16px 0;
  transition: all var(--transition);
}
.navbar.scrolled {
  background: rgba(10,10,26,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 10px 0;
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
}
.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem; font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-logo span { font-weight: 300; -webkit-text-fill-color: var(--text-muted); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-size: 0.85rem; font-weight: 500; text-transform: uppercase; letter-spacing: 1px;
  color: var(--text-secondary); position: relative; transition: color var(--transition);
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--gradient-1);
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  padding: 10px 24px !important; border-radius: 50px;
  background: var(--gradient-1); color: #fff !important;
  text-transform: none !important; letter-spacing: 0 !important;
  transition: transform var(--transition), box-shadow var(--transition) !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(108,99,255,0.35); }
.hamburger {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  background: none; border: none; padding: 4px;
}
.hamburger span {
  width: 26px; height: 2px; background: var(--text-primary);
  border-radius: 2px; transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ─── Hero ─── */
.hero {
  min-height: 100vh; display: flex; align-items: center; position: relative;
  background: var(--gradient-hero);
  overflow: hidden;
}
.hero-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(108,99,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 50% at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at center, black 30%, transparent 70%);
}
.hero-orb {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.3;
  pointer-events: none;
}
.hero-orb-1 { width: 500px; height: 500px; background: var(--primary); top: -10%; right: -10%; animation: orbFloat 8s ease-in-out infinite; }
.hero-orb-2 { width: 400px; height: 400px; background: var(--secondary); bottom: -10%; left: -5%; animation: orbFloat 10s ease-in-out infinite reverse; }
.hero-orb-3 { width: 300px; height: 300px; background: var(--accent); top: 40%; left: 50%; animation: orbFloat 12s ease-in-out infinite 2s; }
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center; padding: 120px 0 80px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 50px;
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  font-size: 0.8rem; color: var(--secondary); font-weight: 500;
  margin-bottom: 24px; letter-spacing: 0.5px;
}
.hero-badge i { font-size: 0.7rem; }
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--secondary); animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  margin-bottom: 16px; line-height: 1.08;
}
.hero-title .outline-text {
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 1.5px var(--text-primary);
}
.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--text-secondary); max-width: 500px; margin-bottom: 36px; line-height: 1.7;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: 50px;
  font-weight: 600; font-size: 0.95rem;
  transition: all var(--transition); cursor: pointer; border: none;
}
.btn-primary {
  background: var(--gradient-1); color: #fff;
  box-shadow: 0 4px 20px rgba(108,99,255,0.3);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 40px rgba(108,99,255,0.45); }
.btn-secondary {
  background: var(--bg-glass); color: var(--text-primary);
  border: 1px solid var(--border-glass);
}
.btn-secondary:hover { background: rgba(255,255,255,0.08); transform: translateY(-3px); }

.hero-stats {
  display: flex; gap: 40px; margin-top: 48px; padding-top: 32px;
  border-top: 1px solid var(--border-glass);
}
.hero-stat h3 {
  font-size: 2rem; background: var(--gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat p { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-top: 2px; }

.hero-visual {
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.hero-avatar-frame {
  width: 380px; height: 380px; border-radius: 50%;
  position: relative; display: flex; align-items: center; justify-content: center;
}
.hero-avatar-frame .ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1.5px solid var(--border-glass);
  animation: ringSpin 20s linear infinite;
}
.hero-avatar-frame .ring:nth-child(2) { inset: 20px; animation-duration: 25s; animation-direction: reverse; border-color: rgba(108,99,255,0.2); }
.hero-avatar-frame .ring:nth-child(3) { inset: 40px; animation-duration: 30s; border-color: rgba(0,212,170,0.15); }
@keyframes ringSpin { to { transform: rotate(360deg); } }
.hero-avatar {
  width: 240px; height: 240px; border-radius: 50%;
  background: var(--gradient-1);
  display: flex; align-items: center; justify-content: center;
  font-size: 5rem; font-weight: 700; color: #fff;
  position: relative; z-index: 2;
  box-shadow: 0 0 60px rgba(108,99,255,0.3);
}

.floating-card {
  position: absolute; padding: 12px 18px; border-radius: var(--radius-sm);
  background: var(--bg-glass); backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  display: flex; align-items: center; gap: 10px;
  font-size: 0.8rem; font-weight: 500; color: var(--text-secondary);
  box-shadow: var(--shadow-card);
  animation: float 6s ease-in-out infinite;
  z-index: 3;
}
.floating-card i { font-size: 1rem; }
.floating-card .icon-bg { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.floating-card-1 { top: 10%; right: -10%; animation-delay: 0s; }
.floating-card-1 .icon-bg { background: rgba(108,99,255,0.2); color: var(--primary); }
.floating-card-2 { bottom: 15%; left: -8%; animation-delay: 2s; }
.floating-card-2 .icon-bg { background: rgba(0,212,170,0.2); color: var(--secondary); }
.floating-card-3 { top: 45%; right: -15%; animation-delay: 4s; }
.floating-card-3 .icon-bg { background: rgba(255,107,107,0.2); color: var(--accent); }
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

/* ─── Section Shared ─── */
section { padding: 100px 0; position: relative; }
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 3px;
  color: var(--primary-light); font-weight: 600;
  margin-bottom: 12px;
}
.section-label::before {
  content: ''; width: 30px; height: 1.5px; background: var(--primary);
}
.section-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  margin-bottom: 16px;
}
.section-desc {
  color: var(--text-secondary);
  max-width: 600px; font-size: 1.05rem; line-height: 1.7;
}
.section-header { margin-bottom: 60px; }

.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── About ─── */
.about { background: var(--bg-darker); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center;
}
.about-image-wrapper {
  position: relative; display: flex; justify-content: center;
}
.about-image {
  width: 340px; height: 420px; border-radius: var(--radius-lg);
  object-fit: cover;
  border: 2px solid var(--border-glass);
  transition: all var(--transition);
}
.about-image:hover {
  border-color: rgba(108,99,255,0.3);
  box-shadow: 0 0 40px rgba(108,99,255,0.15);
}
.about-exp-badge {
  position: absolute; bottom: -10px; right: -10px;
  width: 100px; height: 100px; border-radius: 50%;
  background: var(--gradient-2);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 1.6rem; line-height: 1.2;
  box-shadow: 0 8px 30px rgba(255,107,107,0.3);
}
.about-exp-badge span { font-size: 0.65rem; font-weight: 500; opacity: 0.9; text-transform: uppercase; letter-spacing: 1px; }
.about-text h3 { font-size: 1.6rem; margin-bottom: 16px; }
.about-text p { color: var(--text-secondary); margin-bottom: 12px; font-size: 0.95rem; line-height: 1.7; }
.about-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.about-tag {
  padding: 6px 16px; border-radius: 50px;
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  font-size: 0.8rem; color: var(--text-secondary);
}
.about-tag.active { background: rgba(108,99,255,0.15); border-color: rgba(108,99,255,0.3); color: var(--primary-light); }

/* ─── Skills ─── */
.skills { background: var(--bg-dark); }
.skills-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.skill-card {
  padding: 28px 24px; border-radius: var(--radius-md);
  background: var(--bg-card); border: 1px solid var(--border-glass);
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.skill-card::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--gradient-1);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.skill-card:hover::before { transform: scaleX(1); }
.skill-card:hover {
  border-color: rgba(108,99,255,0.2);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
  background: rgba(108,99,255,0.05);
}
.skill-icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  background: rgba(108,99,255,0.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: var(--primary-light);
  margin-bottom: 16px; transition: all var(--transition);
}
.skill-card:hover .skill-icon { background: rgba(108,99,255,0.2); }
.skill-name { font-size: 1.05rem; margin-bottom: 6px; }
.skill-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }
.skill-bar { margin-top: 14px; height: 4px; background: rgba(255,255,255,0.06); border-radius: 2px; overflow: hidden; }
.skill-bar-fill {
  height: 100%; border-radius: 2px;
  background: var(--gradient-1);
  width: 0; transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ─── Projects ─── */
.projects { background: var(--bg-darker); }
.projects-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.project-card {
  border-radius: var(--radius-md); overflow: hidden;
  background: var(--bg-card); border: 1px solid var(--border-glass);
  transition: all var(--transition);
  cursor: pointer;
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(108,99,255,0.2);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.project-thumb {
  height: 200px; overflow: hidden;
  position: relative;
}
.project-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s ease;
}
.project-card:hover .project-thumb img { transform: scale(1.05); }
.project-thumb .overlay {
  position: absolute; inset: 0;
  background: rgba(10,10,26,0.6);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--transition);
}
.project-card:hover .overlay { opacity: 1; }
.project-body { padding: 24px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.project-tag {
  padding: 4px 12px; border-radius: 50px;
  background: rgba(108,99,255,0.1); border: 1px solid rgba(108,99,255,0.15);
  font-size: 0.7rem; color: var(--primary-light);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.project-title { font-size: 1.1rem; margin-bottom: 8px; }
.project-excerpt { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* ─── Tools ─── */
.tools { background: var(--bg-dark); }
.tools-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 20px;
}
.tool-item {
  padding: 24px 16px; border-radius: var(--radius-md);
  background: var(--bg-card); border: 1px solid var(--border-glass);
  text-align: center; transition: all var(--transition);
}
.tool-item:hover {
  border-color: rgba(108,99,255,0.25);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.tool-item i, .tool-item .tool-logo {
  font-size: 2rem; color: var(--primary-light);
  margin-bottom: 10px; display: block;
}
.tool-item .tool-name { font-size: 0.82rem; color: var(--text-secondary); font-weight: 500; }

/* ─── Testimonials Slider ─── */
.testimonials {
  background: var(--bg-darker);
  overflow: hidden;
}
.slider-container {
  position: relative; overflow: hidden;
}
.slider-track {
  display: flex; transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.testimonial-slide {
  min-width: 100%; padding: 0 60px;
  display: flex; justify-content: center;
}
.testimonial-card {
  max-width: 700px; width: 100%;
  padding: 40px; border-radius: var(--radius-md);
  background: var(--bg-card); border: 1px solid var(--border-glass);
  text-align: center;
}
.testimonial-card .quote-icon {
  font-size: 2.5rem; color: rgba(108,99,255,0.15);
  margin-bottom: 16px;
}
.testimonial-card blockquote {
  font-size: 1.05rem; color: var(--text-secondary);
  line-height: 1.8; font-style: italic;
  margin-bottom: 24px;
}
.testimonial-author { display: flex; align-items: center; justify-content: center; gap: 14px; }
.testimonial-avatar {
  width: 48px; height: 48px; border-radius: 50%;
  overflow: hidden; flex-shrink: 0;
  background: var(--gradient-1);
}
.testimonial-avatar img {
  width: 100%; height: 100%; object-fit: cover;
}
.testimonial-info h4 { font-size: 0.95rem; }
.testimonial-info p { font-size: 0.8rem; color: var(--text-muted); }
.slider-controls {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  margin-top: 32px;
}
.slider-btn {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  color: var(--text-secondary); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  font-size: 0.9rem;
}
.slider-btn:hover {
  background: rgba(108,99,255,0.15);
  border-color: rgba(108,99,255,0.3);
  color: var(--primary-light);
}
.slider-dots { display: flex; gap: 8px; }
.slider-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.1); border: none; cursor: pointer;
  transition: all var(--transition);
}
.slider-dot.active { background: var(--primary); width: 28px; border-radius: 5px; }

/* ─── Contact ─── */
.contact {
  background: var(--bg-dark);
  overflow: hidden;
}
.contact::before {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px; background: var(--gradient-1); opacity: 0.3;
}
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: start;
}
.contact-info h3 { font-size: 1.8rem; margin-bottom: 16px; }
.contact-info p { color: var(--text-secondary); margin-bottom: 32px; }
.contact-details { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
.contact-detail {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border-glass);
  transition: all var(--transition);
}
.contact-detail:hover { border-color: rgba(108,99,255,0.2); }
.contact-detail i {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(108,99,255,0.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary-light); flex-shrink: 0;
}
.contact-detail .detail-text { font-size: 0.88rem; color: var(--text-secondary); }
.contact-detail .detail-text strong { color: var(--text-primary); font-weight: 500; }
.contact-social { display: flex; gap: 12px; }
.contact-social a {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--bg-card); border: 1px solid var(--border-glass);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); transition: all var(--transition);
}
.contact-social a:hover {
  background: rgba(108,99,255,0.15);
  border-color: rgba(108,99,255,0.3);
  color: var(--primary-light);
  transform: translateY(-3px);
}
.contact-form-card {
  padding: 40px; border-radius: var(--radius-lg);
  background: var(--bg-card); border: 1px solid var(--border-glass);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 0.8rem; font-weight: 500;
  color: var(--text-secondary); margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: 1px;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 14px 16px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03); border: 1px solid var(--border-glass);
  color: var(--text-primary); font-family: 'Inter', sans-serif;
  font-size: 0.9rem; transition: all var(--transition);
  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 { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.btn-submit {
  width: 100%; padding: 16px; border-radius: var(--radius-sm);
  background: var(--gradient-1); color: #fff;
  font-weight: 600; font-size: 1rem; cursor: pointer;
  border: none; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(108,99,255,0.35);
}

/* ─── WhatsApp Floating Button ─── */
.whatsapp-float {
  position: fixed; bottom: 24px; right: 24px; z-index: 9998;
  display: flex; align-items: center; gap: 12px;
}
.whatsapp-tooltip {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 8px 16px; border-radius: 50px;
  font-size: 0.82rem; font-weight: 500;
  opacity: 0; transform: translateX(10px);
  transition: all var(--transition);
  pointer-events: none;
  white-space: nowrap;
}
.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1; transform: translateX(0);
}
.whatsapp-btn {
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; cursor: pointer;
  box-shadow: 0 4px 24px rgba(37,211,102,0.4);
  transition: all var(--transition);
  border: none; text-decoration: none;
  animation: whatsapp-pulse 2s ease-in-out infinite;
}
.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 40px rgba(37,211,102,0.5);
  animation: none;
}
@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: 0 4px 24px rgba(37,211,102,0.4); }
  50% { box-shadow: 0 4px 40px rgba(37,211,102,0.6); }
}

/* ─── Footer ─── */
footer {
  padding: 40px 0; text-align: center;
  background: var(--bg-darker);
  border-top: 1px solid var(--border-glass);
}
footer p { font-size: 0.82rem; color: var(--text-muted); }
footer .footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600; background: var(--gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
footer .credit {
  font-size: 0.72rem; color: var(--text-muted); opacity: 0.6;
  margin-top: 4px;
}
footer .credit a { color: var(--primary-light); }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }
  .about-grid { grid-template-columns: 1fr; text-align: center; }
  .about-tags { justify-content: center; }
  .contact-grid { grid-template-columns: 1fr; }
  .testimonial-slide { padding: 0 20px; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(10,10,26,0.95);
    backdrop-filter: blur(20px);
    padding: 20px 24px; gap: 16px;
    border-bottom: 1px solid var(--border-glass);
  }
  .hamburger { display: flex; }
  section { padding: 60px 0; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat { flex: 1; min-width: 100px; }
  .skills-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
  .projects-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-card { padding: 24px; }
  .testimonial-card { padding: 24px; }
  .testimonial-card blockquote { font-size: 0.95rem; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .about-image { width: 280px; height: 350px; }
  .whatsapp-float { bottom: 16px; right: 16px; }
  .whatsapp-btn { width: 48px; height: 48px; font-size: 1.3rem; }
}