/* ===== DESIGN SYSTEM ===== */
:root {
  --accent: #a855f7;
  --text-primary: #f8fafc;
  --text-secondary: rgba(255, 255, 255, 0.75);

  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-md: 16px;
  --fs-lg: 20px;
  --fs-xl: 28px;
  --fs-2xl: 36px;
  --fs-3xl: 52px;

  --space-xs: 6px;
  --space-sm: 10px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 80px;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* ===== BASE ===== */
html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui;
  color: var(--text-primary);

  background:
    radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.15), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(168, 85, 247, 0.15), transparent 40%),
    #020617;
}

/* ===== NAV ===== */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  position: sticky;
  top: 0;
  z-index: 1000;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  background: rgba(2, 6, 23, 0.90);
}

.nav h2 {
  color: var(--accent);
  margin: 0;
}

.nav nav {
  display: flex;
  gap: var(--space-lg);
}

.nav nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: color 0.2s;
}

.nav nav a:hover {
  color: var(--text-primary);
}

.nav-icons {
  display: flex;
  gap: var(--space-sm);
}

.nav-icons a {
  width: 38px;
  height: 38px;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;

  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);

  transition: all 0.3s ease;
}

.nav-icons a:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ===== HAMBURGER ===== */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
  position: fixed;
  top: 0;
  left: -260px;
  width: 240px;
  height: 100vh;
  background: rgba(5, 10, 30, 0.98);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: 80px var(--space-lg) var(--space-lg);
  transition: left 0.3s ease;
  box-sizing: border-box;
}

.mobile-menu.open {
  left: 0;
}

.mobile-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--fs-md);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: color 0.2s;
}

.mobile-menu a:hover {
  color: var(--text-primary);
}

.menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1999;
}

.menu-overlay.open {
  display: block;
}

/* ===== SECTIONS ===== */
section {
  padding: var(--space-xl) var(--space-lg);
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

section h2 {
  text-align: left;
  font-size: var(--fs-xl);
  margin-bottom: var(--space-sm);
}

.subtitle {
  text-align: left;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

/* ===== HERO ===== */
.hero {
  text-align: left;
}

.hero h1 {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-sm);
}

.hero p {
  font-size: var(--fs-md);
  color: var(--text-secondary);
}

/* ===== GRID ===== */
.grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

/* ===== SKILLS ===== */
.skill-group {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.skill-title {
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.skill-chip {
  font-size: var(--fs-xs);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

/* ===== PROJECTS ===== */
.card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
}

.card h3 {
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.card p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.6;
  margin: 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.project-image img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.project-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  opacity: 0;
  background: rgba(0, 0, 0, 0.8);
  transition: 0.3s;
  border-radius: var(--radius-lg);
}

.project-overlay a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-decoration: none;
  transition: all 0.3s ease;
}

.project-overlay a:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.1);
}

.project-overlay a.disabled {
  opacity: 0.3;
  pointer-events: none;
  cursor: not-allowed;
}

.project-card {
  cursor: pointer;
}

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

.project-overlay i {
  color: var(--accent);
}

/* "Details" button in overlay */
.project-overlay .btn-details {
  font-size: var(--fs-xs);
  color: var(--text-primary);
  background: var(--accent);
  border: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s;
}

.project-overlay .btn-details:hover {
  opacity: 0.85;
  transform: none;
}

/* ===== PROJECT MODAL ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  box-sizing: border-box;
}

.modal-overlay.open {
  display: flex;
}

/* Modal is the scroll container — fixed max height */
.modal {
  background: #0d1226;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  animation: modalIn 0.3s ease;
  scrollbar-width: thin;
  scrollbar-color: rgba(168, 85, 247, 0.4) transparent;
}

.modal::-webkit-scrollbar {
  width: 5px;
}

.modal::-webkit-scrollbar-track {
  background: transparent;
}

.modal::-webkit-scrollbar-thumb {
  background: rgba(168, 85, 247, 0.4);
  border-radius: 99px;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Close button — sticky so always visible while scrolling */
.modal-close {
  position: sticky;
  top: var(--space-md);
  float: right;
  margin: var(--space-md) var(--space-md) calc(-34px - var(--space-md)) auto;
  background: rgba(13, 18, 38, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 10;
  flex-shrink: 0;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Image: full width, contained — no cropping */
.modal-image {
  width: 100%;
  background: #080d1c;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) var(--space-lg) 0;
  box-sizing: border-box;
}

.modal-image img {
  width: 100%;
  max-height: 200px;
  object-fit: contain;
  border-radius: var(--radius-md);
  display: block;
}

.modal-body {
  padding: var(--space-lg);
}

.modal-body h2 {
  color: var(--accent);
  margin: 0 0 var(--space-sm);
  font-size: var(--fs-xl);
}

.modal-desc {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
  margin: 0 0 var(--space-md);
  font-size: var(--fs-md);
}

/* ── Rich detail styles ── */
.modal-subtitle {
  font-size: var(--fs-xs);
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.modal-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--space-md);
}

.modal-chip {
  font-size: var(--fs-xs);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(168, 85, 247, 0.12);
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: rgba(255, 255, 255, 0.85);
}

.modal-overview {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.75;
  margin: 0 0 var(--space-md);
}

.modal-highlights-label {
  font-size: var(--fs-xs);
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 var(--space-sm);
}

.modal-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.modal-highlight {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-sm) var(--space-md);
  border-left: 2px solid var(--accent);
  background: rgba(168, 85, 247, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.modal-highlight-title {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.modal-highlight-desc {
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.65;
}

.modal-detail {
  margin: 0;
}

.modal-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-primary:hover {
  opacity: 0.85;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== CONTACT ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 0;
  align-items: stretch;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

/* .contact-box {
  padding: var(--space-lg);
  background: none;
  border: none;
  border-right: 1px solid rgba(255, 255, 255, 0.07);
} */
 .contact-box {
  padding: var(--space-lg);
  background: none;
  border: none;
  position: relative;
}

.contact-box h3 {
  margin: 0 0 var(--space-md);
  font-size: var(--fs-lg);
}

.contact-box p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin: 0 0 var(--space-xs);
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-box i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}

/* ===== CONTACT FORM ===== */
.contact-form {
  padding: var(--space-lg);
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.contact-form h3 {
  margin: 0 0 var(--space-sm);
  font-size: var(--fs-lg);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--fs-sm);
  font-family: inherit;
  resize: vertical;
  box-sizing: border-box;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-submit {
  align-self: flex-start;
}

.form-status {
  font-size: var(--fs-xs);
  color: #4ade80;
  margin: 0;
  min-height: 18px;
}

/* ===== ABOUT ===== */
#about {
  text-align: left;
}

.about-item {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  text-align: left;
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-sizing: border-box;
}

.about-image {
  flex-shrink: 0;
}

.about-image img {
  width: 180px;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.about-text {
  flex: 1;
}

.about-text p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.7;
  margin: 0;
}

/* ===== EXPERIENCE ===== */
#experience {
  text-align: left;
}

.experience-item {
  text-align: left;
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-sizing: border-box;
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.experience-header h3 {
  margin: 0;
  font-size: var(--fs-lg);
}

.experience-header span {
  color: var(--accent);
  font-weight: 500;
  font-size: var(--fs-sm);
}

.experience-item p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.7;
  margin: 0;
}

/* ===== ANIMATION ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: 0.6s;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 868px) {
  .nav {
    padding: var(--space-sm) var(--space-md);
  }

  .nav nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}

@media (max-width: 768px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }

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

  section h2,
  .hero,
  #about,
  #experience {
    text-align: center;
  }

  .experience-header {
    flex-direction: column;
    align-items: center;
  }

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

  .skill-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .skill-items {
    justify-content: center;
  }

  /* About: image above text on mobile */
  .about-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-lg);
  }

  .about-image img {
    width: 140px;
    height: 140px;
  }

  .about-text p {
    text-align: center;
  }

  .experience-item p {
    text-align: center;
  }

  .contact-box::after {
    content: '';
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.07);
  }
}

@media (min-width: 769px) {
  .contact-box::after {
    content: '';
    position: absolute;
    top: 12px;
    bottom: 12px;
    right: 0;
    width: 1px;
    background: rgba(255, 255, 255, 0.07);
  }
}

@media (max-width: 576px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: var(--fs-2xl);
  }

  .modal-image img {
    height: 160px;
  }
}