/* ===== CSS Variables & Theme ===== */
:root {
  --color-bg: #0d0d0d;
  --color-bg-alt: #141414;
  --color-bg-card: #1a1a1a;
  --color-bg-card-hover: #222222;
  --color-accent: #f5c518;
  --color-accent-light: #ffd84d;
  --color-accent-dark: #d4a600;
  --color-accent-glow: rgba(245, 197, 24, 0.15);
  --color-text: #e8e8e8;
  --color-text-secondary: #9a9a9a;
  --color-text-muted: #666666;
  --color-border: #2a2a2a;
  --color-border-hover: #3a3a3a;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0 4px 24px rgba(245, 197, 24, 0.2);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

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

/* ===== Container ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

strong {
  color: var(--color-accent);
}

/* ===== Animations ===== */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.05); opacity: 0.2; }
  100% { transform: scale(1); opacity: 0.4; }
}

@keyframes wave-hand {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(20deg); }
  75% { transform: rotate(-10deg); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(245, 197, 24, 0.1); }
  50% { box-shadow: 0 0 40px rgba(245, 197, 24, 0.25); }
}

.animate-slide-up {
  opacity: 0;
  animation: slideUp 0.6s ease-out forwards;
}

.animate-fade-in {
  opacity: 0;
  animation: fadeIn 0.8s ease-out forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

.animate-on-scroll {
  opacity: 0;
  transform: translateY(25px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
}

.navbar.scrolled {
  background: rgba(13, 13, 13, 0.95);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.logo-accent {
  color: var(--color-accent);
}

.logo-dot {
  color: var(--color-accent);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 8px;
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

/* Hamburger Menu */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  position: relative;
  transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

.nav-toggle.active .hamburger {
  background: transparent;
}

.nav-toggle.active .hamburger::before {
  top: 0;
  transform: rotate(45deg);
  background: var(--color-accent);
}

.nav-toggle.active .hamburger::after {
  bottom: 0;
  transform: rotate(-45deg);
  background: var(--color-accent);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(245, 197, 24, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
}

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

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse-ring 2s infinite;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  color: var(--color-text);
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.text-accent {
  color: var(--color-accent);
  position: relative;
  display: inline-block;
}

.text-accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-accent);
  opacity: 0.3;
  border-radius: 2px;
}

.wave {
  display: inline-block;
  animation: wave-hand 2.5s infinite;
  transform-origin: 70% 70%;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-social {
  display: flex;
  gap: 12px;
  margin-top: 40px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

.social-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 4px 16px rgba(245, 197, 24, 0.15);
}

/* Hero Graphic */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-graphic {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.graphic-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--color-border);
}

.ring-1 {
  width: 100%;
  height: 100%;
  animation: pulse-ring 4s ease-in-out infinite;
}

.ring-2 {
  width: 75%;
  height: 75%;
  border-color: var(--color-accent);
  opacity: 0.3;
  animation: pulse-ring 4s ease-in-out infinite 1s;
}

.ring-3 {
  width: 50%;
  height: 50%;
  border-color: var(--color-accent);
  opacity: 0.15;
  animation: pulse-ring 4s ease-in-out infinite 2s;
}

.graphic-initials {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-accent);
  text-shadow: 0 0 40px rgba(245, 197, 24, 0.3);
  z-index: 1;
  animation: float 6s ease-in-out infinite;
}

/* ===== Section Common ===== */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-accent-glow);
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ===== About Section ===== */
.about {
  background: var(--color-bg-alt);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 4px;
}

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

/* About Image */
.about-image {
  display: flex;
  justify-content: center;
}

.image-frame {
  position: relative;
  width: 300px;
  height: 360px;
}

.image-placeholder {
  width: 100%;
  height: 100%;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  position: relative;
  z-index: 1;
  animation: glow 4s ease-in-out infinite;
}

.placeholder-icon {
  font-size: 4rem;
}

.placeholder-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-accent);
  font-weight: 600;
}

.image-decoration {
  position: absolute;
  top: 16px;
  left: 16px;
  right: -16px;
  bottom: -16px;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  opacity: 0.2;
}

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

.skill-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

.skill-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.skill-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--color-accent-glow);
  border-radius: var(--radius);
  margin-bottom: 16px;
  color: var(--color-accent);
}

.skill-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.skill-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ===== Projects Section ===== */
.projects {
  background: var(--color-bg-alt);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.project-image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-card-hover) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--color-border);
}

.project-placeholder {
  color: var(--color-accent);
  opacity: 0.5;
}

.project-card:hover .project-placeholder {
  opacity: 1;
  transform: scale(1.1);
  transition: all var(--transition);
}

.project-info {
  padding: 24px;
}

.project-title {
  font-size: 1.2rem;
  color: var(--color-text);
  margin-bottom: 8px;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tech-tag {
  padding: 4px 12px;
  background: var(--color-accent-glow);
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 500;
  border-radius: 50px;
}

.project-links {
  display: flex;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.project-link:hover {
  color: var(--color-accent);
}

/* ===== Contact Section ===== */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact-item:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 12px rgba(245, 197, 24, 0.1);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--color-accent-glow);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
}

.contact-item h3 {
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 2px;
}

.contact-item p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.contact-cta {
  padding: 40px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.contact-cta p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-self: center;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

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

.footer-social {
  display: flex;
  gap: 12px;
  justify-self: end;
  align-self: start;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

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

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-social {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-graphic {
    width: 240px;
    height: 240px;
  }

  .graphic-initials {
    font-size: 3rem;
  }

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

  .about-image {
    order: -1;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links {
    justify-self: center;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .footer-social {
    justify-self: center;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(13, 13, 13, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
    pointer-events: none;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .hero {
    padding: 100px 0 60px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

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

  section {
    padding: 72px 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .hero-graphic {
    width: 180px;
    height: 180px;
  }

  .graphic-initials {
    font-size: 2.5rem;
  }

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

  .skill-card {
    padding: 24px 16px;
  }

  .image-frame {
    width: 240px;
    height: 300px;
  }
}

/* ===== Selection ===== */
::selection {
  background: var(--color-accent);
  color: var(--color-bg);
}

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

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-dark);
}