/* ============================================================
   PORTFOLIO — LIGHT THEME WITH GLASSMORPHISM & ANIMATIONS
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary:       #6366F1;
  --primary-dark:  #4F46E5;
  --secondary:     #0EA5E9;
  --accent:        #F59E0B;
  --bg:            #F0F4FF;
  --bg-alt:        #EEF2FF;
  --card-bg:       rgba(255, 255, 255, 0.72);
  --card-border:   rgba(255, 255, 255, 0.85);
  --text:          #1E293B;
  --text-muted:    #64748B;
  --shadow-sm:     0 4px 16px rgba(99, 102, 241, 0.08);
  --shadow-md:     0 8px 32px rgba(99, 102, 241, 0.14);
  --shadow-lg:     0 16px 48px rgba(99, 102, 241, 0.22);
}

/* ---------- Base ---------- */
.line-clamp-3 {
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

html, body {
  height: 100%;
  font-family: 'Open Sans', sans-serif;
  scroll-behavior: smooth;
  background: var(--bg) !important;
  color: var(--text) !important;
}

section {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar            { width: 6px; }
::-webkit-scrollbar-track      { background: #E8EEFF; }
::-webkit-scrollbar-thumb      { background: var(--primary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover{ background: var(--primary-dark); }

.scrollbar-hide                { -ms-overflow-style: none; scrollbar-width: none; }
.scrollbar-hide::-webkit-scrollbar { display: none; }

/* ---------- Layout helpers ---------- */
.custom-margin { margin-left: 10%; margin-right: 10%; }

/* ---------- Navbar ---------- */
header.header {
  background: rgba(255, 255, 255, 0.88) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border-bottom: 1px solid rgba(99, 102, 241, 0.12) !important;
  color: var(--text) !important;
  padding: 0 !important;
  transition: top 0.35s ease, box-shadow 0.35s ease;
  box-shadow: 0 2px 20px rgba(99, 102, 241, 0.07);
}

header.header nav { padding: 1rem 1.5rem; }

header.header h1 {
  color: var(--primary) !important;
  font-weight: 700;
  letter-spacing: -0.3px;
}

header.header a {
  color: #475569 !important;
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  transition: color 0.25s ease;
}

header.header a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  transition: width 0.3s ease;
}

header.header a:hover { color: var(--primary) !important; }
header.header a:hover::after { width: 100%; }

/* ---------- Section backgrounds ---------- */
#home {
  background: linear-gradient(135deg, #F0F4FF 0%, #EEF2FF 55%, #F0FDFF 100%) !important;
  position: relative;
  overflow: hidden;
}

/* Animated background blobs for hero */
#home::before,
#home::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

#home::before {
  width: 500px; height: 500px;
  background: radial-gradient(circle at center, rgba(165,180,252,0.45), rgba(129,140,248,0.25));
  top: -140px; right: 5%;
  filter: blur(70px);
  animation: floatBlob 9s ease-in-out infinite alternate;
}

#home::after {
  width: 360px; height: 360px;
  background: radial-gradient(circle at center, rgba(186,230,253,0.5), rgba(125,211,252,0.25));
  bottom: -60px; left: 3%;
  filter: blur(60px);
  animation: floatBlob 11s ease-in-out infinite alternate-reverse;
}

@keyframes floatBlob {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(20px, -25px) scale(1.06); }
  100% { transform: translate(-15px, 20px) scale(0.95); }
}

#about {
  background: linear-gradient(135deg, #EEF2FF 0%, #F0FDFF 100%) !important;
}

#resume, #portfolio, #blog {
  background: #F8FAFC !important;
}

.contact-section {
  background: linear-gradient(135deg, #EEF2FF 0%, #F0F4FF 100%) !important;
  padding: 5rem 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

footer {
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%) !important;
}

/* ---------- Gradient text for headings ---------- */
.section-title {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Glass cards ---------- */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

/* ---------- Profile image gradient ring ---------- */
.profile-ring {
  border: 4px solid transparent !important;
  background-clip: padding-box;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.25), var(--shadow-md);
  animation: pulseRing 3s ease-in-out infinite;
}

@keyframes pulseRing {
  0%, 100% { box-shadow: 0 0 0 4px rgba(99,102,241,0.25), var(--shadow-md); }
  50%       { box-shadow: 0 0 0 8px rgba(99,102,241,0.12), var(--shadow-md); }
}

/* ---------- Skill bars ---------- */
.skill-bar-track {
  background: rgba(99, 102, 241, 0.1);
  border-radius: 999px;
  height: 8px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.skill-bar {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  width: 0;
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.skill-bar::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.4) 50%, transparent 100%);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ---------- Tech icons ---------- */
.tech-icon {
  display: inline-block;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), filter 0.3s ease;
  filter: grayscale(0.2);
  margin: 4px;
}

.tech-icon:hover {
  transform: scale(1.25) translateY(-4px);
  filter: grayscale(0) drop-shadow(0 4px 8px rgba(99,102,241,0.3));
}

/* ---------- Buttons ---------- */
.btn-outline {
  border: 2px solid var(--primary) !important;
  color: var(--primary) !important;
  border-radius: 999px !important;
  font-weight: 600;
  transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease !important;
}

.btn-outline:hover {
  background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
  color: #fff !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99,102,241,0.35) !important;
  border-color: transparent !important;
}

.btn-outline-rect {
  border: 2px solid var(--primary) !important;
  color: var(--primary) !important;
  border-radius: 10px !important;
  font-weight: 600;
  transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease !important;
}

.btn-outline-rect:hover {
  background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
  color: #fff !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99,102,241,0.35) !important;
  border-color: transparent !important;
}

/* ---------- Scroll fade-in animations ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }
.fade-up-delay-5 { transition-delay: 0.5s; }

/* ---------- Interest area cards ---------- */
.interest-card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s ease;
}

.interest-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  background: rgba(255,255,255,0.9);
}

/* ---------- Contact cards ---------- */
.contact-card {
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(99,102,241,0.12);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* ---------- Divider gradient ---------- */
.gradient-divider {
  height: 3px;
  border: none;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
  border-radius: 2px;
  margin: 2rem 0;
}

/* ---------- Stat number ---------- */
.stat-number {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 2.5rem;
  font-weight: 800;
}

/* ---------- Typing cursor for hero ---------- */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--primary);
  margin-left: 3px;
  vertical-align: middle;
  border-radius: 1px;
  animation: blink 1.1s step-start infinite;
}