:root{
  --bg: #0b1220;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.08);
  --border: rgba(255,255,255,.10);
  --text: #eaf0ff;
  --muted: rgba(234,240,255,.72);
  --accent: #6d5efc;     /* purple-blue */
  --accent2: #00d4ff;    /* cyan */
  --shadow: 0 18px 55px rgba(0,0,0,.45);
}

html, body { height: 100%; }
body{
  background:
    radial-gradient(800px 450px at 18% 10%, rgba(109,94,252,.18), transparent 60%),
    radial-gradient(700px 450px at 85% 18%, rgba(0,212,255,.14), transparent 60%),
    radial-gradient(600px 380px at 55% 95%, rgba(109,94,252,.10), transparent 65%),
    var(--bg);
  color: var(--text);
}

a{ color: var(--text); }
a:hover{ color: var(--text); opacity: .9; }

.navbar{
  background: rgba(11,18,32,.72) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border) !important;
}

.navbar .nav-link{
  color: var(--muted) !important;
  font-weight: 600;
}
.navbar .nav-link:hover{ color: var(--text) !important; }

.brand-pill{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.55rem .75rem;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.brand-dot{
  width:10px;height:10px;border-radius:999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
}

.hero{
  padding: 96px 0 56px;
}

.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  padding:.5rem .75rem;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 999px;
  color: var(--muted);
  font-weight: 700;
}

.hero-title{
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.accent-text{
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section{
  padding: 56px 0;
}

.card-dark{
  background: linear-gradient(180deg, var(--panel2), rgba(255,255,255,.05));
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.card-dark .text-muted{ color: var(--muted) !important; }

.soft-divider{
  border-color: var(--border) !important;
}

.badge-tech{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  color: var(--muted);
  font-weight: 700;
}

.btn-accent{
  border: 0;
  color: #06101c;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 14px 40px rgba(109,94,252,.25);
}
.btn-accent:hover{ filter: brightness(1.03); }

.btn-ghost{
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 800;
}
.btn-ghost:hover{ background: rgba(255,255,255,.08); }

.footer{
  border-top: 1px solid var(--border);
  color: var(--muted);
  padding: 24px 0;
}

/* Images */
.profile-img{
  width: 100%;
  max-width: 420px;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* Forms */
.form-control, .form-select, textarea{
  background: rgba(255,255,255,.05) !important;
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
  border-radius: 14px !important;
}
.form-control::placeholder, textarea::placeholder{ color: rgba(234,240,255,.55) !important; }
.form-control:focus, .form-select:focus, textarea:focus{
  box-shadow: 0 0 0 .2rem rgba(109,94,252,.25) !important;
}

/* Small utilities */
.muted{ color: var(--muted); }

/* =========================================
   Mobile typography tuning
   ========================================= */
@media (max-width: 576px) {

  /* Hero / page titles */
  .hero-title {
    font-size: 1.9rem;
    line-height: 1.25;
  }

  .display-6 {
    font-size: 1.75rem;
  }

  /* Section spacing */
  .section {
    padding: 48px 0;
  }

  /* Card titles */
  .card-dark h2,
  .card-dark .h5 {
    font-size: 1.05rem;
  }

  /* Paragraphs */
  p,
  .muted {
    font-size: 0.9rem;
  }

  /* Buttons */
  .btn {
    font-size: 0.85rem;
    padding: 0.45rem 0.75rem;
  }

  /* Badges */
  .badge-tech {
    font-size: 0.7rem;
    padding: 0.35em 0.6em;
  }

  /* Navbar */
  .navbar-brand {
    font-size: 1rem;
  }

  .nav-link {
    font-size: 0.9rem;
  }

  /* Project card images */
  .card img {
    max-height: 50px;
    object-fit: cover;
  }

  /* If you add thumbnails later */
  .project-thumb {
    max-height: 50px;
    object-fit: cover;
  }

  /* Reduce card padding slightly */
  .card-body {
    padding: 0.7rem;
  }
}

/* ===============================
   Global smooth transitions
================================= */
a,
button,
.card-dark,
.badge-tech {
  transition: all 0.25s ease;
}

/* ===============================
   Card hover (projects, skills, etc.)
================================= */
.card-dark:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.35);
}

/* ===============================
   Accent button hover
================================= */
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
}

/* ===============================
   Ghost button hover
================================= */
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

/* ===============================
   Tech badge hover
================================= */
.badge-tech:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

/* ===============================
   Social links hover
================================= */
.card-dark a:hover {
  color: #ffffff;
}

/* --- Certifications: subtle lift + glow on hover --- */
.cert-card {
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  border-color: rgba(255, 255, 255, 0.14);
}

/* Small pill badge used in cert header (Coursera) */
.badge-pill {
  border-radius: 999px;
  padding: 0.35rem 0.6rem;
  font-weight: 700;
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.10);
}

/* Make buttons feel nicer on hover */
.btn-ghost,
.btn-accent {
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.btn-ghost:hover,
.btn-accent:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.25);
}

/* Mobile spacing + slightly smaller type in dense sections */
@media (max-width: 576px) {
  #certifications .h5 {
    font-size: 1rem;
  }
  #certifications .muted.small {
    font-size: 0.9rem;
  }
  #certifications .card-dark {
    padding: 1.1rem !important;
  }
}