/*
  Portfolio CSS
  Color Palette:
  - BG: #0F172A (Slate Dark)
  - Component BG: #1E293B (Slate Medium)
  - Border: #334155 (Slate Light)
  - Text Primary: #F1F5F9 (White)
  - Text Secondary: #94A3B8 (Gray)
  - Accent 1 (Purple): #7c3aed (Dark Purple)
  - Accent 2 (Pink): #EC4899
*/

/* --- Global Styles & Variables --- */
:root {
  --bg-color: #0F172A;
  --component-bg: #1E293B;
  --border-color: #334155;
  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --accent-purple: #7c3aed;
  --accent-pink: #EC4899;
  --font-sans: 'Poppins', sans-serif;
  --font-mono: 'Roboto Mono', monospace;
  --header-height: 80px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  font-family: var(--font-sans);
  line-height: 1.6;
  background-color: var(--bg-color);
  color: var(--text-primary);
  padding-top: var(--header-height);
  overflow-x: hidden;
}

/* --- Scroll Animation --- */
.reveal { opacity: 0; transform: translateY(30px); }
.reveal.visible {
    animation: fadeInUp 0.8s ease-out forwards;
}
@keyframes fadeInUp { to { opacity: 1; transform: translateY(0); } }
/* Staggered animation delays */
.reveal.visible .stat-card, .reveal.visible .experience-card, .reveal.visible .project-card, .reveal.visible .certificate-card, .reveal.visible .skill-item {
    animation: fadeInUp 0.8s ease-out forwards;
}
.reveal.visible > *:nth-child(1) { animation-delay: 0.1s; }
.reveal.visible > *:nth-child(2) { animation-delay: 0.2s; }
.reveal.visible > *:nth-child(3) { animation-delay: 0.3s; }
.reveal.visible > *:nth-child(4) { animation-delay: 0.4s; }
.reveal.visible > *:nth-child(5) { animation-delay: 0.5s; }
.reveal.visible > *:nth-child(6) { animation-delay: 0.6s; }


/* --- Layout & Reusable Components --- */
.section-wrapper { width: 90%; max-width: 1100px; margin: 0 auto; padding: 70px 0; }
.section-heading {
  font-size: clamp(28px, 5vw, 36px);
  color: var(--text-primary);
  margin-bottom: 50px;
  position: relative;
  padding-bottom: 10px;
}
.section-heading::after {
  content: ""; display: block; width: 60px; height: 4px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-pink));
  border-radius: 2px; position: absolute; bottom: 0; left: 0;
}
.btn {
  display: inline-block; padding: 12px 28px; background-color: transparent;
  color: var(--accent-purple); text-decoration: none; border-radius: 4px;
  border: 2px solid var(--accent-purple); font-weight: 500; transition: all 0.3s ease;
}
.btn:hover { background-color: var(--accent-purple); color: var(--text-primary); }
.btn-secondary { color: var(--text-secondary); border-color: var(--border-color); }
.btn-secondary:hover { background-color: var(--border-color); color: var(--text-primary); }

/* --- Global Background Animation (Particles.js) --- */
#particles-js {
    position: fixed; width: 100%; height: 100%;
    top: 0; left: 0; z-index: -1;
}

/* --- Go To Top Button --- */
.go-to-top-button {
  position: fixed; right: 20px; bottom: 20px; width: 45px; height: 45px;
  background-color: var(--component-bg); color: var(--accent-purple); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; text-decoration: none;
  font-size: 1.2rem; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
  opacity: 0; visibility: hidden; transform: translateY(20px);
  transition: all 0.4s ease; z-index: 1000;
}
.go-to-top-button.show { opacity: 1; visibility: visible; transform: translateY(0); }
.go-to-top-button:hover { background-color: var(--accent-purple); color: var(--text-primary); }

/* --- Header & Navigation --- */
header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1001;
  background-color: rgba(15, 23, 42, 0.85); backdrop-filter: blur(10px);
  height: var(--header-height);
}
.nav-content { display: flex; justify-content: space-between; align-items: center; padding: 0 5%; height: 100%; }
.nav-logo { font-size: 1.8rem; font-weight: 700; color: var(--text-primary); text-decoration: none; }
.nav-logo b { color: var(--accent-purple); }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--text-primary); transition: color 0.3s; }
.nav-links a:hover { color: var(--accent-purple); }
.hamburger { display: none; cursor: pointer; z-index: 1002; }
.hamburger div { width: 25px; height: 2px; background-color: var(--accent-purple); margin: 5px 0; transition: all 0.3s ease; }

/* --- Hero Section --- */
.hero { min-height: calc(95vh - var(--header-height)); padding: 20px 0 60px 0; display: flex; align-items: center; position: relative; overflow: hidden; }
.hero-content { display: flex; align-items: center; justify-content: space-between; width: 100%; gap: 20px; z-index: 2; }
.hero-text { max-width: 600px; }
.intro-text { color: var(--accent-purple); font-family: var(--font-mono); margin-bottom: 15px; }
.hero-name { font-size: clamp(32px, 5vw, 60px); color: var(--text-primary); line-height: 1.1; word-break: break-word; }
.hero-tagline { font-size: clamp(24px, 4vw, 36px); color: var(--text-secondary); line-height: 1.2; margin-bottom: 25px; }
.hero-description { max-width: 540px; color: var(--text-secondary); margin-bottom: 40px; }
.hero-image-container { position: relative; width: 320px; height: 320px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.hero-image { max-width: 100%; border-radius: 50%; z-index: 2; position: relative; animation: gentle-float 6s ease-in-out infinite; }
.orbiting-ring { position: absolute; border: 1px solid var(--accent-purple); border-radius: 50%; animation: orbit 15s linear infinite; opacity: 0.5; }
.ring-1 { width: 110%; height: 110%; animation-duration: 20s; }
.ring-2 { width: 120%; height: 120%; animation-duration: 15s; animation-direction: reverse; opacity: 0.3; }
.ring-3 { width: 130%; height: 130%; animation-duration: 25s; opacity: 0.2; }
.discover-more { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 5; }
.discover-more a { font-family: var(--font-mono); font-size: 13px; color: var(--text-secondary); text-decoration: none; display: flex; flex-direction: column; align-items: center; gap: 10px; transition: color 0.3s; }
.discover-more a:hover { color: var(--text-primary); }
.discover-more i { animation: bounce 2s infinite; }
@keyframes gentle-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes orbit { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateY(0); } 40% { transform: translateY(-10px); } 60% { transform: translateY(-5px); } }


/* --- About Section --- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-left p { color: var(--text-secondary); margin-bottom: 20px; }
.about-left blockquote { font-family: var(--font-mono); color: var(--text-secondary); border-left: 2px solid var(--accent-purple); padding-left: 20px; margin: 30px 0; }
.about-left blockquote span { display: block; margin-top: 5px; color: var(--text-primary); }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stat-card {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.5), rgba(30, 41, 59, 0.2));
  border: 1px solid var(--border-color); backdrop-filter: blur(5px);
  border-radius: 8px; padding: 25px; text-align: center;
}
.stat-card i { font-size: 2rem; color: var(--accent-purple); margin-bottom: 10px; }
.stat-card h3 { font-size: 2rem; color: var(--text-primary); }
.stat-card p { color: var(--text-secondary); }

/* --- Education Tabs --- */
.education-container { background-color: var(--component-bg); border-radius: 8px; padding: 30px; }
.tabs { display: flex; border-bottom: 1px solid var(--border-color); margin-bottom: 20px; }
.tab-link {
    background: none; border: none; padding: 10px 20px; cursor: pointer;
    color: var(--text-secondary); font-family: var(--font-mono); font-size: 14px;
    border-bottom: 3px solid transparent; transition: all 0.25s ease;
}
.tab-link.active { color: var(--accent-purple); border-bottom-color: var(--accent-purple); }
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.5s; }
.tab-content h3 { font-size: 1.5rem; color: var(--text-primary); }
.tab-content p { color: var(--text-secondary); margin-bottom: 5px; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* --- Experience Section --- */
.experience-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 25px; }
.experience-card {
    background-color: var(--component-bg); border: 1px solid var(--border-color);
    border-radius: 8px; padding: 30px;
    display: flex; flex-direction: column;
}
.experience-logo { width: 50px; height: 50px; border-radius: 8px; margin-bottom: 20px; object-fit: contain; }
.placeholder-logo {
    background-color: var(--border-color); display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; color: var(--accent-purple);
}
.company-details { display: flex; align-items: center; gap: 10px; margin-bottom: 5px; flex-wrap: wrap; }
.experience-company { margin-bottom: 0; }
.internship-type {
    background-color: rgba(124, 58, 237, 0.15); color: var(--accent-purple);
    font-size: 12px; font-weight: 500; font-family: var(--font-mono);
    padding: 3px 8px; border-radius: 12px; border: 1px solid var(--accent-purple);
}
.experience-title { font-size: 1.3rem; color: var(--text-primary); }
.experience-company { color: var(--accent-purple); font-weight: 500; }
.experience-duration { font-family: var(--font-mono); font-size: 13px; color: var(--text-secondary); margin-bottom: 15px; }
.experience-card ul { list-style: none; padding-left: 0; flex-grow: 1; }
.experience-card ul li { color: var(--text-secondary); padding-left: 20px; position: relative; margin-bottom: 10px; }
.experience-card ul li::before { content: '▸'; position: absolute; left: 0; color: var(--accent-purple); }

/* --- Portfolio Showcase Section --- */
.showcase-header { text-align: center; }
.showcase-header .section-heading { justify-content: center; margin-bottom: 20px; }
.showcase-header .section-heading::after { left: 50%; transform: translateX(-50%); }
.showcase-header p { color: var(--text-secondary); max-width: 600px; margin: 0 auto 40px auto; }
.showcase-tabs { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; margin-bottom: 40px; }
.showcase-tab {
    font-family: var(--font-sans); padding: 10px 25px;
    border: 1px solid var(--border-color); border-radius: 8px;
    text-decoration: none; color: var(--text-secondary);
    background-color: transparent; transition: all 0.3s ease;
    display: flex; align-items: center; gap: 10px; cursor: pointer;
}
.showcase-tab:hover { background-color: var(--component-bg); color: var(--text-primary); }
.showcase-tab.active {
    background-color: var(--component-bg); color: var(--text-primary);
    border-color: var(--accent-purple);
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.3);
}
.showcase-content { display: none; }
.showcase-content.active { display: block; animation: fadeIn 0.5s; }

/* Skills Section (inside showcase) */
.skills-grid {
    display: flex; flex-wrap: wrap;
    gap: 15px; justify-content: center;
}
.skill-item {
    font-family: var(--font-mono); font-size: 14px;
    background-color: var(--component-bg); color: var(--text-secondary);
    padding: 10px 20px; border-radius: 4px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}
.skill-item:hover { color: var(--accent-purple); background-color: var(--border-color); transform: translateY(-3px); }

/* Projects Section (inside showcase) */
.project-grid-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 25px; }
.project-card {
  background-color: var(--component-bg); border-radius: 8px; overflow: hidden;
  display: flex; flex-direction: column;
  border: 1px solid var(--border-color);
}
.project-image img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.project-content { padding: 25px; flex-grow: 1; display: flex; flex-direction: column; }
.project-title { font-size: 1.3rem; color: var(--text-primary); margin-bottom: 10px; }
.project-description { color: var(--text-secondary); flex-grow: 1; }
.project-tech { display: flex; flex-wrap: wrap; gap: 10px; margin: 15px 0; }
.project-tech span { font-family: var(--font-mono); font-size: 12px; background-color: var(--border-color); color: var(--accent-purple); padding: 4px 8px; border-radius: 4px; }
.project-links { display: flex; gap: 15px; }
.project-links a { color: var(--text-secondary); font-size: 1.5rem; transition: color 0.3s; }
.project-links a:hover { color: var(--accent-purple); }
.more-projects-container { text-align: center; margin-top: 50px; }
.more-projects-link {
    display: inline-flex; align-items: center; gap: 10px;
    color: var(--text-secondary); text-decoration: none; font-family: var(--font-mono);
    padding-bottom: 4px; border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}
.more-projects-link:hover { color: var(--accent-purple); border-bottom-color: var(--accent-purple); }
.more-projects-link i { transition: transform 0.3s ease; }
.more-projects-link:hover i { transform: translateX(5px); }

/* Certifications Section (inside showcase) */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); /* UPDATED: Smaller size */
    gap: 20px; /* UPDATED: Tighter gap */
}
.certificate-card {
    position: relative; border-radius: 8px; overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease; cursor: pointer;
    aspect-ratio: 4 / 3; /* Maintain a consistent aspect ratio */
}
.certificate-card img {
    width: 100%; height: 100%; object-fit: cover;
    display: block; transition: transform 0.3s ease;
}
.certificate-card .card-overlay {
    position: absolute; bottom: 0; left: 0; width: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95), transparent);
    padding: 30px 15px 15px 15px; text-align: center;
    opacity: 0; transform: translateY(20px);
    transition: all 0.3s ease;
}
.certificate-card .card-overlay p { color: var(--text-primary); font-weight: 500; }
.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3), 0 0 20px rgba(124, 58, 237, 0.2);
    border-color: var(--accent-purple);
}
.certificate-card:hover img { transform: scale(1.05); }
.certificate-card:hover .card-overlay { opacity: 1; transform: translateY(0); }


/* --- Connect Section --- */
.connect-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.connect-left h3 { font-size: 1.5rem; color: var(--text-primary); margin-bottom: 15px; }
.connect-left p { color: var(--text-secondary); margin-bottom: 25px; }
.social-links-connect { display: flex; flex-direction: column; gap: 15px; }
.social-links-connect a { text-decoration: none; color: var(--text-primary); font-size: 1.1rem; display: flex; align-items: center; gap: 15px; transition: color 0.3s; }
.social-links-connect a:hover { color: var(--accent-purple); }
.social-links-connect i { font-size: 1.5rem; color: var(--accent-purple); width: 30px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 5px; color: var(--text-secondary); }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px; border: 1px solid var(--border-color);
  border-radius: 4px; background-color: var(--bg-color);
  color: var(--text-primary); font-size: 1rem;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--accent-purple); }
.connect-right .btn { width: 100%; }

/* --- Footer --- */
footer { text-align: center; padding: 20px 0; font-family: var(--font-mono); font-size: 13px; color: var(--text-secondary); }

/*
==============================================
RESPONSIVE STYLES
==============================================
*/

@media (max-width: 992px) {
  .hero {
    padding-bottom: 120px; /* ADDED THIS LINE to prevent overlap on mobile */
  }
  .hero-content { flex-direction: column-reverse; text-align: center; }
  .hero-description { margin: 0 auto 40px; }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links {
    display: flex; position: fixed; top: 0; right: 0;
    width: min(75vw, 300px); height: 100vh;
    background-color: var(--component-bg);
    flex-direction: column; justify-content: center; align-items: center;
    transform: translateX(100%); transition: transform 0.3s ease-in-out;
    z-index: 1000;
  }
  .nav-links.active { transform: translateX(0); }
  .hamburger { display: block; }
  .hamburger.is-active .line1 { transform: rotate(45deg) translate(5px, 5px); }
  .hamburger.is-active .line2 { opacity: 0; }
  .hamburger.is-active .line3 { transform: rotate(-45deg) translate(5px, -5px); }
  .section-wrapper { padding: 60px 0; }
  .connect-wrapper { grid-template-columns: 1fr; }
  .hero-name { font-size: 2.2rem; }
  .hero-tagline { font-size: 1.3rem; }
  .hero-image-container { width: 250px; height: 250px; }
  .ring-1 { width: 105%; height: 105%; }
  .ring-2 { width: 110%; height: 110%; }
  .ring-3 { width: 115%; height: 115%; }
  .go-to-top-button {
      width: 40px; height: 40px; font-size: 1rem;
      right: 15px; bottom: 15px;
  }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .project-grid-container { grid-template-columns: 1fr; }
    .certifications-grid { grid-template-columns: 1fr; }
    .tabs, .showcase-tabs { flex-direction: column; gap: 10px; }
}