/* Custom styles for Venkatappagari Jagadeesh Reddy Portfolio */
:root {
  --hero-grad-start: #eef4ff;
  --hero-grad-end: #ffffff;
  --indigo: #6366f1;
  --violet: #8b5cf6;
  --pink: #ec4899;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.35);
  --shadow-soft: 0 10px 30px rgba(2, 6, 23, 0.08);
}

html, body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, 'Apple Color Emoji', 'Segoe UI Emoji';
}

.bg-hero {
  background: radial-gradient(1200px 600px at 10% 10%, rgba(99, 102, 241, 0.15), transparent 50%),
              radial-gradient(1000px 600px at 90% 0%, rgba(236, 72, 153, 0.12), transparent 45%),
              linear-gradient(180deg, var(--hero-grad-start), var(--hero-grad-end));
}

section {
  scroll-margin-top: 90px;
}

.progress {
  height: 10px;
}

footer .link-secondary:hover {
  text-decoration: underline;
}

@media (min-width: 992px) {
  .py-lg-6 {
    padding-top: 5rem !important;
    padding-bottom: 5rem !important;
  }
}

/******** Dark mode adjustments ********/
[data-bs-theme="dark"] .bg-hero {
  --hero-grad-start: #0b0f17;
  --hero-grad-end: #101826;
}

/* Subtle card hover */
.card:hover {
  transform: translateY(-2px);
  transition: transform 150ms ease;
}

/* Profile photo styling */
.profile-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 50%;
}

.profile-photo-sm {
  max-width: 180px;
}

/* ---------------- Gradient system & glassmorphism ---------------- */
.gradient-text {
  background: linear-gradient(90deg, var(--indigo), var(--violet), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.btn-gradient {
  background-image: linear-gradient(90deg, var(--indigo), var(--violet), var(--pink));
  color: #fff;
  border: 0;
  box-shadow: var(--shadow-soft);
}
.btn-gradient:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
}

.navbar.glass-nav {
  background: rgba(255, 255, 255, 0.6) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
[data-bs-theme="dark"] .navbar.glass-nav {
  background: rgba(16, 24, 38, 0.6) !important;
}

.nav-link {
  position: relative;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 0.25rem;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--indigo), var(--pink));
}

footer {
  border-top: 3px solid transparent;
  border-image: linear-gradient(90deg, var(--indigo), var(--violet), var(--pink)) 1;
}

/* ---------------- Animations ---------------- */
@keyframes fadeUp {
  0% { opacity: 0; transform: translateY(16px); }
  100% { opacity: 1; transform: translateY(0); }
}

.animate-hero-title { animation: fadeUp 700ms ease 50ms both; }
.animate-hero-sub { animation: fadeUp 800ms ease 120ms both; }
.animate-hero-cta { animation: fadeUp 900ms ease 180ms both; }

.hover-float:hover { transform: translateY(-4px); }

.icon-hover:hover { transform: translateY(-2px) scale(1.05); transition: transform 150ms ease; }

.card-glow {
  transition: transform 200ms ease, box-shadow 200ms ease, filter 200ms ease;
}
.card-glow:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 12px 35px rgba(99, 102, 241, 0.25);
  filter: drop-shadow(0 0 0.35rem rgba(236, 72, 153, 0.45));
}

.project-header {
  background: linear-gradient(90deg, rgba(99,102,241,0.18), rgba(139,92,246,0.18), rgba(236,72,153,0.18));
  border-bottom: 1px solid var(--glass-border);
}

/* ---------------- Certifications ---------------- */
.cert-card {
  background: linear-gradient(135deg, rgba(99,102,241,0.9), rgba(139,92,246,0.95), rgba(236,72,153,0.9));
  box-shadow: 0 10px 30px rgba(2, 6, 23, 0.15);
  transition: transform 200ms ease, box-shadow 200ms ease, filter 200ms ease;
}
.cert-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(99,102,241,0.35);
  filter: drop-shadow(0 0 0.35rem rgba(236,72,153,0.55));
}
.cert-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
}

/* Optional color variants if you want distinct hues per card */
.cert-blue { background: linear-gradient(135deg, #0ea5e9, #06b6d4); }
.cert-purple { background: linear-gradient(135deg, #0891b2, #0e7490); }
.cert-teal { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.cert-orange { background: linear-gradient(135deg, #0ea5e9, #0891b2); }

/* ---------------- Education cards ---------------- */
.education-card {
  transition: transform 200ms ease, box-shadow 200ms ease, filter 200ms ease;
  border: 1px solid rgba(99,102,241,0.1);
}
.education-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(99,102,241,0.2);
  filter: drop-shadow(0 0 0.25rem rgba(236,72,153,0.3));
}

.education-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(139,92,246,0.15));
  color: var(--indigo);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.cgpa-badge {
  background: linear-gradient(90deg, var(--indigo), var(--violet), var(--pink));
  color: #fff;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}

/* ---------------- Skills badges ---------------- */
.skill-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .75rem;
  border-radius: 999px;
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.25);
  box-shadow: var(--shadow-soft);
}
[data-bs-theme="dark"] .skill-badge { background: rgba(99,102,241,0.18); }
.skill-badge i { color: var(--indigo); }

/* ---------------- Responsive badge ---------------- */
.responsive-badge {
  font-size: 1rem;
  white-space: normal;
  text-align: center;
  line-height: 1.4;
  max-width: 100%;
  word-wrap: break-word;
}

@media (max-width: 768px) {
  .responsive-badge {
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem !important;
    line-height: 1.3;
  }
}

@media (max-width: 576px) {
  .responsive-badge {
    font-size: 0.8rem;
    padding: 0.4rem 0.6rem !important;
    line-height: 1.2;
  }
}

/* ---------------- Contact form ---------------- */
.form-control, .form-select {
  border: 1px solid rgba(99,102,241,0.35);
}
.form-control:focus, .form-select:focus {
  border-color: transparent;
  outline: 0;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.25);
}
.input-group-text {
  background: linear-gradient(90deg, rgba(99,102,241,.15), rgba(236,72,153,.15));
  border: 1px solid rgba(99,102,241,0.35);
}