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

:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;

  --bg-primary: #0f0f1e;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #16213e;

  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a; 

  --border-subtle: #27272a;
  --border-medium: #3f3f46;
  --border-bright: #52525b; 

  --accent-bg: rgba(102, 126, 234, 0.1);
  --accent-hover: rgba(102, 126, 234, 0.2);

  --white: #ffffff;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, #0f0f1e 0%, #1a1a2e 50%, #16213e 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  position: relative;
}

/* Global animated background overlay */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(240, 147, 251, 0.07) 0%, transparent 40%);
  animation: gradientShift 15s ease-in-out infinite;
  z-index: 0;
  pointer-events: none;
}

/* Global grid pattern */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle, rgba(102, 126, 234, 0.08) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 0;
  pointer-events: none;
}

html {
  scroll-behavior: smooth;
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(26, 26, 46, 0.8);
  backdrop-filter: blur(20px);
  z-index: 1000;
  padding: 1rem 0;
  transition: all 0.3s ease;
  border-bottom: 1px solid var(--border-subtle);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  height: 50px;
  width: auto;
  max-width: 150px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  padding: 0.5rem;
}

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

.nav-links a::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.3s ease;
  z-index: -1;
  opacity: 0.1;
}

.nav-links a:hover::after {
  width: 35px;
  height: 35px;
  opacity: 0.2;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(102, 126, 234, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 126, 234, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
}

@keyframes gradientShift {
  0%, 100% { 
    transform: translateY(0) scale(1);
    opacity: 1;
  }
  50% { 
    transform: translateY(-30px) scale(1.1);
    opacity: 0.8;
  }
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}


/* Digital code rain effect */
.code-rain {
  position: absolute;
  top: 0;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  color: var(--primary-color);
  opacity: 0.2;
  animation: codeRainFall linear infinite;
  white-space: nowrap;
}

@keyframes codeRainFall {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  10% {
    opacity: 0.3;
  }
  90% {
    opacity: 0.3;
  }
  100% {
    transform: translateY(100vh);
    opacity: 0;
  }
}

/* Floating binary code */
.binary-float {
  position: absolute;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  color: var(--primary-color);
  opacity: 0;
  animation: binaryFloat 15s ease-in-out infinite;
}

@keyframes binaryFloat {
  0% {
    transform: translate(0, 100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.4;
  }
  90% {
    opacity: 0.4;
  }
  100% {
    transform: translate(200px, -100px) rotate(360deg);
    opacity: 0;
  }
}

@keyframes globalBinaryFall {
  0% {
    transform: translateY(-20px) rotate(0deg);
    opacity: 0;
  }
  5% {
    opacity: 1;
  }
  95% {
    opacity: 1;
  }
  100% {
    transform: translateY(110vh) rotate(15deg);
    opacity: 0;
  }
}

/* Glitch effect lines */
.glitch-line {
  position: absolute;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
  opacity: 0;
  animation: glitchScan 8s ease-in-out infinite;
}

@keyframes glitchScan {
  0%, 100% {
    top: 20%;
    opacity: 0;
  }
  10% {
    opacity: 0.5;
  }
  50% {
    top: 80%;
    opacity: 0.3;
  }
  90% {
    opacity: 0.5;
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  color: var(--text-primary);
  max-width: 1200px;
  padding: 2rem;
}

.hero-greeting {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
  animation: fadeIn 1s ease-out;
}

.wave-emoji {
  display: inline-block;
  animation: wave 2.5s ease-in-out infinite;
  transform-origin: 70% 70%;
}

@keyframes wave {
  0%, 100% { transform: rotate(0deg); }
  10%, 30% { transform: rotate(14deg); }
  20% { transform: rotate(-8deg); }
  40%, 60% { transform: rotate(14deg); }
  50% { transform: rotate(-8deg); }
  70%, 90% { transform: rotate(0deg); }
}

.hero-title-wrapper {
  display: flex;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  animation: slideInUp 1s ease-out;
  color: var(--text-primary);
}

.hero-role-container {
  display: flex;
}

.hero-arrow {
  font-size: 3.5rem;
  color: var(--accent-color);
  font-weight: 700;
  animation: slideInUp 1s ease-out 0.2s both;
}

.hero-dynamic-role {
  font-size: 3.5rem;
  font-weight: 700;
  min-height: 80px;
  display: flex;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  animation: slideInUp 1s ease-out 0.2s both;
}

/* Cursor effect */
  .hero-dynamic-role::after {
  content: "|";
  color: var(--accent-color);
  animation: blink 1s infinite;
  margin-left: 4px;
}

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.hero p {
  font-size: 1.2rem;
  font-style: italic;
  margin-bottom: 2rem;
  opacity: 0.9;
  animation: slideInUp 1s ease-out 0.2s both;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: slideInUp 1s ease-out 0.4s both;
}

.social-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--bg-secondary);
  color: white;
  text-decoration: none;
  border-radius: 50%;
  border: 2px solid var(--border-medium);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  font-size: 1.2rem;
  position: relative;
  overflow: hidden;
}

.social-button:hover {
  background: var(--accent-bg);
  border-color: var(--primary);
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 15px 40px var(--accent-hover);
}

.social-button::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: -35px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
}

.social-button:hover::before {
  opacity: 1;
  bottom: -45px;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Sections */
section {
  padding: 5rem 2rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  z-index: 1;
}

section .container {
  width: 100%;
}

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

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Skills Section */
.skills-nav {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 0.5rem;
  border-radius: 50px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.skills-nav-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
  font-size: 1rem;
}

.skills-nav-btn.active {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
}

.skills-nav-btn:hover:not(.active) {
  color: var(--primary-color);
  background: rgba(102, 126, 234, 0.1);
}

.skills-tab-content {
  display: none;
  animation: fadeInUp 0.5s ease-out;
}

.skills-tab-content.active {
  display: block;
}

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

.skills-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: flex-start;
}

.subsection-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.skills-grid-modern {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
  max-width: 100%;
  margin: 0 auto;
}

.skill-item-modern {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.skill-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 50%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.skill-icon::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1;
}

.skill-icon svg {
  position: relative;
  z-index: 2;
  transition: all 0.3s ease;
}

.skill-item-modern:hover .skill-icon {
  transform: translateY(-10px) scale(1.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.skill-item-modern:hover .skill-icon::before {
  opacity: 0.1;
}

.skill-item-modern:hover .skill-icon svg {
  filter: brightness(1.2);
}

.skill-item-modern span {
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.skill-item-modern:hover span {
  color: var(--primary-color);
  transform: translateY(-5px);
}

/* Experience */
.experience-container {
  background: rgba(26, 26, 46, 0.6);
  backdrop-filter: blur(10px);
  padding: 2.5rem;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  transition: all 0.3s;
  margin-bottom: 1rem;
}

.experience-container:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: 0 20px 60px rgba(102, 126, 234, 0.2);
}

.experience-company-group {
  margin-bottom: 0.5rem;
}

.experience-company-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.experience-company-header h3 {
  font-size: 1.1rem;
  color: var(--primary-color);
  font-weight: 600;
}

.experience-company-header .company-location {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.experience-role {
  padding: 1.5rem;
  border-left: 2px solid var(--border-medium);
  margin-left: 0.5rem;
  margin-bottom: 0;
  position: relative;
  transition: border-color 0.3s ease;
}

.experience-role:hover {
  border-left-color: var(--primary-color);
}

.experience-role:last-child {
  margin-bottom: 0;
}

.experience-role::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 1.8rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-medium);
  border: 2px solid var(--bg-primary);
  transition: background 0.3s ease;
}

.experience-role:hover::before {
  background: var(--primary-color);
}

.role-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.role-title {
  font-size: 1.25rem;
  color: var(--text-primary);
  font-weight: 600;
}

.role-type {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

.role-date {
  background: var(--accent-bg);
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.8rem;
  border: 1px solid var(--border-medium);
  white-space: nowrap;
}

.role-summary {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  line-height: 1.7;
  font-size: 0.95rem;
}

.role-highlights {
  list-style: none;
  padding: 0;
}

.role-highlights li {
  padding-left: 1.5rem;
  margin-bottom: 0.4rem;
  color: var(--text-secondary);
  position: relative;
  font-size: 0.9rem;
  line-height: 1.6;
}

.role-highlights li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.tech-tagline {
  background: var(--accent-bg);
  padding: 0.4rem 1rem;
  border-radius: 15px;
  font-size: 0.85rem;
  color: var(--primary-color);
  border: 1px solid var(--border-medium);
}

/* Certificates Section */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.certificate-card {
  background: var(--bg-secondary);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
  cursor: pointer;
}

.certificate-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: 0 30px 80px rgba(102, 126, 234, 0.3);
}

.certificate-preview {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.certificate-preview::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0);
  transition: all 0.3s ease;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.certificate-card:hover .certificate-preview::after {
  background: rgba(0, 0, 0, 0.7);
}

.certificate-preview::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  z-index: 2;
  transition: all 0.3s ease;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23667eea'%3E%3Cpath d='M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 30px 30px;
  opacity: 0;
}

.certificate-card:hover .certificate-preview::before {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

.certificate-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.certificate-card:hover .certificate-preview img {
  transform: scale(1.05);
}

.certificate-info {
  padding: 1.5rem;
}

.certificate-info h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.certificate-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 10000;
  padding-top: 60px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.8);
}

.modal-content {
  margin: auto;
  display: block;
  max-width: 80%;
  max-height: 70%;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

#caption {
  margin: 15px auto;
  text-align: center;
  color: #ccc;
  font-size: 1rem;
  max-width: 80%;
}

.close {
  position: absolute;
  top: 20px;
  right: 35px;
  color: var(--text-primary);
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.3s ease;
}

.close:hover {
  color: #bbb;
}

/* Projects Section */
.projects {
  background: transparent;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.project-card {
  background: var(--bg-secondary);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: 0 30px 80px rgba(102, 126, 234, 0.3);
}

.project-image {
  height: 200px;
  position: relative;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-image::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0);
  transition: background 0.3s ease;
  z-index: 1;
}

.project-card:hover .project-image::after {
  background: rgba(0, 0, 0, 0.7);
}

.project-links-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 1rem;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 2;
}

.project-card:hover .project-links-overlay {
  opacity: 1;
}

.project-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--text-primary);
  color: var(--bg-secondary);
  text-decoration: none;
  border-radius: 50%;
  transition: all 0.3s ease;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.project-link:hover {
  background: var(--accent-hover);
  color: var(--text-primary);
  transform: scale(1.1);
}

.project-link svg {
  width: 24px;
  height: 24px;
}

.project-content {
  padding: 2rem;
}

.project-content h4 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.project-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.tech-tags {
  display: flex;
  gap: 15px;
}

.tag {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
}

.tag svg,
.tag img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* Contact Section */
.contact {
  background: transparent;
}

.contact-intro {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  font-size: 1.2rem;
}


.contact-form {
  background: rgba(26, 26, 46, 0.6);
  backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
}

.form-title {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  color: var(--text-primary);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--border-medium);
  border-radius: 10px;
  font-size: 1rem;
  transition: all 0.3s ease;
  font-family: inherit;
  background: var(--bg-primary);
  color: var(--text-primary);
}

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

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--accent-bg);
  background: var(--bg-secondary);
}

.btn-submit {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

/* Footer */
footer {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border-subtle);
}