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

:root {
  --bg:        #080d14;
  --surface:   #0f1623;
  --surface2:  #161f30;
  --border:    #1e2d42;
  --accent:    #38bdf8;
  --accent2:   #818cf8;
  --text:      #e2e8f0;
  --muted:     #64748b;
  --radius:    10px;
}

html { scroll-behavior: smooth; overflow-x: hidden; }
body { overflow-x: hidden; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

/* ── Nav ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2.5rem;
  background: rgba(8, 13, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Courier New', monospace;
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.05em;
}

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

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

/* ── Hero ── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 4rem 2.5rem;
  overflow: hidden;
  background: url('Pictures/hero.jpg') center/cover no-repeat;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 40%, rgba(56,189,248,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 70%, rgba(129,140,248,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 680px;
  background: rgba(8, 13, 20, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 14px;
  padding: 2.5rem 3rem;
}

.hero-pre {
  color: #38bdf8;
  font-family: 'Courier New', monospace;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  text-shadow: 0 1px 10px rgba(0,0,0,0.9);
}

h1 {
  font-size: clamp(3.5rem, 7vw, 6.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: #ffffff;
  text-shadow: 0 2px 20px rgba(0,0,0,0.8);
  margin-bottom: 0.75rem;
}

.hero-title {
  font-family: 'Courier New', monospace;
  font-size: 1.5rem;
  color: #38bdf8;
  margin-bottom: 1.5rem;
  min-height: 1.8rem;
  text-shadow: 0 1px 10px rgba(0,0,0,0.9);
}

.cursor {
  animation: blink 1s step-end infinite;
  color: var(--accent);
}

@keyframes blink { 50% { opacity: 0; } }

.hero-desc {
  color: #ffffff;
  font-size: 1.25rem;
  max-width: 560px;
  margin-bottom: 2rem;
  text-shadow: 0 1px 8px rgba(0,0,0,0.9);
}

.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: #7dd3fc;
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid #38bdf8;
  color: #38bdf8;
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* ── Sections ── */
section { padding: 6rem 0; }

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 2.5rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  height: 2px;
  width: 40px;
  background: var(--accent);
  margin-top: 0.4rem;
}

/* ── About ── */
#about {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(rgba(15, 22, 35, 0.1), rgba(15, 22, 35, 0.1)),
    url('Pictures/about1.jpg') center/cover no-repeat;
}

#about .container {
  max-width: 1400px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: start;
  background: rgba(8, 13, 20, 0.65);
  border: 1px solid rgba(56, 189, 248, 0.12);
  border-radius: 14px;
  padding: 3.5rem 4rem;
}

.about-text p { color: #f1f5f9; font-size: 1.25rem; margin-bottom: 1.25rem; }

.about-who {
  font-size: 1.5rem !important;
  font-weight: 700;
  color: #ffffff !important;
}


.about-creds {
  margin-top: 3rem !important;
  font-size: 1.15rem !important;
  color: #94a3b8 !important;
}

.cred-badge {
  font-size: 0.72rem;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 20px;
  padding: 0.1rem 0.5rem;
  vertical-align: middle;
}

.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.about-list li {
  color: #f1f5f9;
  font-size: 1.25rem;
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.7;
}

.about-list li::before {
  content: '\203A';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 1.1rem;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 160px;
  margin-top: 3rem;
}

.stat {
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
}

.stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 1rem;
  color: #e2e8f0;
  margin-top: 0.2rem;
}

/* ── Projects ── */
#projects {
  background:
    linear-gradient(rgba(8, 13, 20, 0.05), rgba(8, 13, 20, 0.05)),
    url('Pictures/projects1.jpg') center/cover no-repeat;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

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

.card-coming {
  opacity: 0.75;
}


.card-tag {
  font-family: 'Courier New', monospace;
  font-size: 0.72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(56,189,248,0.08);
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  width: fit-content;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.card p { font-size: 0.9rem; color: #cbd5e1; }

.card-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-top: 0.25rem;
}

.card-details li {
  font-size: 0.83rem;
  color: #cbd5e1;
  padding-left: 1rem;
  position: relative;
}

.card-details li::before {
  content: '\203A';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.card-link {
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  margin-top: auto;
  padding-top: 0.5rem;
  transition: color 0.2s;
}

.card-link:hover { color: #7dd3fc; }

/* ── Skills ── */
#skills {
  background:
    linear-gradient(rgba(15, 22, 35, 0.35), rgba(15, 22, 35, 0.35)),
    url('Pictures/shahadat-rahman-BfrQnKBulYQ-unsplash.jpg') center/cover no-repeat;
}

.skills-groups {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 2rem;
}

.skills-group h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent2);
  margin-bottom: 0.75rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tags span {
  font-size: 0.82rem;
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  transition: border-color 0.2s, color 0.2s;
}

.tags span:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Contact ── */
#contact {
  background:
    linear-gradient(rgba(8, 13, 20, 0.05), rgba(8, 13, 20, 0.05)),
    url('Pictures/getintouch1.jpg') center/cover no-repeat;
}

.contact-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
  background: rgba(8, 13, 20, 0.72);
  border: 1px solid rgba(56, 189, 248, 0.12);
  border-radius: 14px;
  padding: 4rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.contact-lead {
  color: #f1f5f9;
  font-size: 1.15rem;
  max-width: 580px;
  line-height: 1.7;
}

.contact-roles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  width: 100%;
  max-width: 860px;
}

.contact-role {
  background: rgba(8, 13, 20, 0.35);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  backdrop-filter: blur(4px);
  transition: border-color 0.2s, transform 0.2s;
}

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

.role-icon {
  font-size: 1.6rem;
  display: block;
  margin-bottom: 0.6rem;
}

.contact-role h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #38bdf8;
  margin-bottom: 0.4rem;
}

.contact-role p {
  font-size: 0.88rem;
  color: #e2e8f0;
  line-height: 1.5;
}

.contact-links { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.photo-credit {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.photo-credit a {
  color: var(--muted);
  text-decoration: underline;
}

.photo-credit a:hover {
  color: var(--accent);
}

/* ── Responsive ── */
@media (max-width: 700px) {
  nav ul { gap: 1.2rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-stats { flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 480px) {
  nav { padding: 1rem 1.25rem; }
  #hero { padding: 3rem 1.25rem; }
  .container { padding: 0 1.25rem; }
  nav ul { gap: 1rem; }
}