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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --accent: #00bcd4;
  --accent-hover: #26c6da;
  --accent-dim: rgba(0, 188, 212, 0.1);
  --border-color: #2a2a2a;
  --font-mono: 'Courier New', Courier, monospace;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* ===== NAVBAR ===== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: box-shadow 0.3s ease;
}

#navbar.scrolled {
  box-shadow: 0 2px 20px rgba(0, 188, 212, 0.08);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 65px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--accent);
  letter-spacing: 2px;
  transition: text-shadow 0.3s ease;
}

.nav-logo:hover {
  text-shadow: 0 0 15px rgba(0, 188, 212, 0.5);
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-secondary);
  position: relative;
  padding: 5px 0;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
}

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

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
  border-radius: 2px;
}

.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 SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px 60px;
  background: linear-gradient(135deg, var(--bg-primary) 0%, #0d1a1e 50%, var(--bg-primary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(0, 188, 212, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

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

.hero-greeting {
  font-size: 1.2rem;
  color: var(--accent);
  margin-bottom: 10px;
  font-family: var(--font-mono);
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeInDown 0.8s ease forwards;
}

.hero-name {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 15px;
  background: linear-gradient(135deg, #ffffff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  animation: fadeInDown 0.8s ease 0.2s forwards;
}

.hero-title-wrapper {
  font-size: 1.3rem;
  margin-bottom: 15px;
  opacity: 0;
  animation: fadeInDown 0.8s ease 0.4s forwards;
}

.hero-title-static {
  color: var(--text-secondary);
}

.hero-title-dynamic {
  color: var(--accent);
  font-weight: 600;
  border-right: 2px solid var(--accent);
  padding-right: 5px;
  animation: blink 0.7s step-end infinite;
}

@keyframes blink {
  50% { border-color: transparent; }
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 35px;
  opacity: 0;
  animation: fadeInDown 0.8s ease 0.6s forwards;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInDown 0.8s ease 0.8s forwards;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 188, 212, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-secondary:hover {
  background: var(--accent-dim);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 188, 212, 0.15);
}

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

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}

.btn-small {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* ===== SECTIONS ===== */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: #ffffff;
}

.divider {
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 0 auto 50px;
  border-radius: 2px;
}

/* ===== ABOUT ===== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-text strong {
  color: var(--accent);
}

.about-info {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.info-item:hover {
  border-color: var(--accent);
  transform: translateX(5px);
}

.info-item i {
  color: var(--accent);
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
}

.info-item span {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===== SKILLS ===== */
.skills-category {
  margin-bottom: 40px;
}

.skills-category:last-child {
  margin-bottom: 0;
}

.category-title {
  font-size: 1.2rem;
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.skill-badge:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0, 188, 212, 0.15);
}

.skill-badge i {
  font-size: 1.2rem;
}

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 25px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all 0.4s ease;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 188, 212, 0.1);
}

.project-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 15px;
}

.project-icon {
  font-size: 1.6rem;
  color: var(--accent);
}

.project-card h3 {
  font-size: 1.15rem;
  color: #ffffff;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.project-status {
  font-size: 0.7rem;
  font-weight: 600;
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 2px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 18px;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.project-tags span {
  padding: 4px 12px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.project-card .btn {
  align-self: flex-start;
}

/* ===== CONTACT ===== */
.contact-intro {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-size: 1.05rem;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.contact-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateX(8px);
}

.contact-link i {
  font-size: 1.3rem;
  width: 28px;
  text-align: center;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all 0.3s ease;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #555;
}

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

.contact-form .btn {
  align-self: flex-start;
}

/* Form success message */
.form-success {
  text-align: center;
  padding: 30px;
  color: var(--accent);
  font-size: 1.1rem;
}

.form-success i {
  font-size: 2.5rem;
  margin-bottom: 15px;
  display: block;
}

/* ===== FOOTER ===== */
footer {
  padding: 30px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

footer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-socials {
  display: flex;
  gap: 18px;
}

.footer-socials a {
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

.footer-socials a:hover {
  color: var(--accent);
  transform: translateY(-3px);
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

/* ===== RESPONSIVE ===== */

/* Tablet */
@media (max-width: 768px) {
  .hero-name {
    font-size: 2.5rem;
  }

  .hero-title-wrapper {
    font-size: 1.1rem;
  }

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

  .nav-links {
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 20px 0;
    transform: translateY(-120%);
    transition: transform 0.4s ease;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 1.05rem;
  }

  .nav-link::after {
    display: none;
  }

  .hamburger {
    display: flex;
  }

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

/* Mobile */
@media (max-width: 480px) {
  .hero-name {
    font-size: 1.8rem;
  }

  .hero-title-wrapper {
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .section {
    padding: 60px 0;
  }

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

  .skills-grid {
    justify-content: center;
  }

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