/* --- CSS Variables --- */
:root {
  --bg-color: #f4f7f9;
  --primary-accent: #3b82f6;
  --primary-accent-darker: #2563eb;
  --secondary-accent: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-heading: #121826;
  --border-color: #e2e8f0;
  --navbar-bg: rgba(244, 247, 249, 0.85);
  --footer-bg: #e2e8f0;
  --skill-tag-bg: #e2e8f0;
  --shadow-color: rgba(0, 0, 0, 0.05);
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Lato', sans-serif;
}

body.dark-mode {
  --bg-color: #121826;
  --secondary-accent: #1e293b;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-heading: #ffffff;
  --border-color: #334155;
  --navbar-bg: rgba(18, 24, 38, 0.85);
  --footer-bg: #0c101a;
  --skill-tag-bg: #334155;
  --shadow-color: rgba(0, 0, 0, 0.2);
}

/* --- General Styles --- */
* { box-sizing: border-box; margin: 0; padding: 0; scroll-behavior: smooth; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
body { font-family: var(--font-body); line-height: 1.6; background-color: var(--bg-color); color: var(--text-primary); transition: background-color 0.3s ease, color 0.3s ease; }
a { color: var(--primary-accent); text-decoration: none; }
h1, h2, h3 { font-family: var(--font-heading); color: var(--text-heading); font-weight: 600; line-height: 1.2; }
h2 { font-size: 2.5rem; margin-bottom: 50px; text-align: center; position: relative; }
h2::after { content: ''; position: absolute; bottom: -15px; left: 50%; transform: translateX(-50%); width: 60px; height: 4px; background-color: var(--primary-accent); border-radius: 2px; transition: width 0.3s ease-in-out; }
h2:hover::after { width: 90px; }
section { padding: 100px 20px; }
.content { max-width: 1100px; margin: 0 auto; }

/* --- Theme Toggle & Mobile Nav Toggle Buttons --- */
#theme-toggle { position: fixed; top: 1.5rem; right: 1.5rem; background: none; border: none; color: var(--text-secondary); font-size: 1.5rem; cursor: pointer; z-index: 9999; transition: transform 0.3s ease, color 0.3s ease; }
#theme-toggle:hover { transform: scale(1.2) rotate(15deg); color: var(--primary-accent); }
.mobile-nav-toggle { display: none; }

/* --- Desktop Navbar --- */
.navbar { background: var(--navbar-bg); backdrop-filter: blur(10px); position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 15px 20px; display: flex; justify-content: center; border-bottom: 1px solid var(--border-color); transition: background-color 0.3s ease, border-color 0.3s ease; }
.primary-navigation { list-style: none; display: flex; align-items: center; gap: 20px; margin: 0; padding: 0; }
.navbar a { color: var(--text-primary); font-family: var(--font-heading); font-size: 1.1rem; padding: 8px 16px; border-radius: 6px; transition: background-color 0.3s ease, color 0.3s ease; }
.navbar a:hover { background-color: var(--primary-accent); color: #ffffff; }

/* --- Header / Hero Section --- */
.header { min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1), transparent 70%), var(--bg-color); padding-top: 70px; transition: background-color 0.3s ease; }
.header-content { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.profile-image { width: 180px; height: 180px; border-radius: 50%; overflow: hidden; border: 5px solid var(--primary-accent); box-shadow: 0 0 25px rgba(59, 130, 246, 0.5); }
.profile-image img { width: 100%; height: 100%; object-fit: cover; }
.title h1 { font-size: 3.5rem; font-weight: 700; }
.title .sub-title { font-size: 1.5rem; color: var(--text-secondary); font-family: var(--font-body); font-weight: 400; min-height: 2.4rem; }
.typed-text { position: relative; }
.typed-text::after { content: '|'; position: absolute; right: -10px; bottom: 0; line-height: 1; color: var(--primary-accent); animation: blink 0.7s infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
.resume-download-button { background-color: var(--primary-accent); color: #ffffff; border: none; padding: 12px 24px; font-size: 1rem; font-weight: 600; border-radius: 8px; cursor: pointer; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.resume-download-button:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3); }

/* --- Content Sections (About, Cards, Skills, etc.) --- */
.about p { font-size: 1.2rem; max-width: 800px; margin: 0 auto 20px auto; text-align: center; color: var(--text-secondary); }
.card-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; margin-top: 20px; }
.card { background-color: var(--secondary-accent); padding: 30px; border-radius: 12px; border: 1px solid var(--border-color); transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, border-color 0.3s ease; box-shadow: 0 5px 15px var(--shadow-color); }
.card:hover { transform: translateY(-10px); box-shadow: 0 15px 30px var(--shadow-color); }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin-bottom: 8px; }
.card h3 { color: var(--text-heading); font-size: 1.5rem; }
.card-subtitle { font-weight: bold; color: var(--primary-accent); margin-bottom: 15px; }
.card-date { background-color: var(--skill-tag-bg); color: var(--text-primary); padding: 4px 8px; border-radius: 6px; font-size: 0.8rem; font-weight: bold; white-space: nowrap; }
.card p { color: var(--text-secondary); font-size: 1rem; margin-bottom: 8px; }
.card-bullets { color: var(--text-secondary); font-size: 1rem; padding-left: 20px; margin-top: 10px; text-align: left; }
.card-bullets li { margin-bottom: 10px; }
.project-links { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 10px; }
.project-link { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; border-radius: 6px; font-weight: 600; font-size: 0.9rem; text-decoration: none; transition: transform 0.2s ease, background-color 0.2s ease; }
.project-link.live-link { background-color: var(--primary-accent); color: #ffffff; }
.project-link.live-link:hover { background-color: var(--primary-accent-darker); transform: translateY(-2px); }
.project-link.github-link { background-color: var(--skill-tag-bg); color: var(--text-primary); border: 1px solid var(--border-color); }
.project-link.github-link:hover { background-color: var(--border-color); transform: translateY(-2px); }

.skills { background-color: var(--secondary-accent); transition: background-color 0.3s ease; }
.skills-container { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; max-width: 900px; margin: 0 auto; }
.skill-tag { background-color: var(--skill-tag-bg); color: var(--text-primary); padding: 10px 20px; border-radius: 8px; font-size: 1rem; font-weight: 500; transition: background-color 0.3s ease, transform 0.3s ease, color 0.3s ease; display: flex; align-items: center; gap: 12px; }
.skill-tag:hover { background-color: var(--primary-accent); color: #ffffff; transform: scale(1.05); }
.skill-tag i { font-size: 1.5rem; }
.skill-tag img { height: 1.5rem; width: 1.5rem; }

.certifications { background-color: var(--bg-color); }
/* --- Education Section --- */
.education-container {
  display: grid;
  gap: 30px;
}

.education-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background-color: var(--secondary-accent);
  padding: 25px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 5px 15px var(--shadow-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.education-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 25px var(--shadow-color);
}

/* ✅ Logo wrapper (no background box) */
.education-logo {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ✅ Logo image (clean, no box) */
.education-logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border: none;
  background: none;
  box-shadow: none;
  transition: transform 0.2s ease;
}

/* ✅ Hover zoom effect */
.education-logo a:hover img {
  transform: scale(1.05);
}

/* Details (title + school + date) */
.education-details {
  flex: 1;
  text-align: left;
}

.education-details h3 {
  font-size: 1.5rem;
  margin-bottom: 5px;
  color: var(--text-heading);
}

.education-school {
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--primary-accent);
  text-decoration: none;
  transition: text-decoration 0.3s ease;
}

.education-school:hover {
  text-decoration: underline;
}

.education-date {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 10px;
}

/* 📱 Mobile view */
@media (max-width: 600px) {
  .education-card {
    flex-direction: column;
    text-align: center;
  }
}
#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
}


.header-content {
  position: relative;
  z-index: 2; /* keeps text above particles */
}


.contact p { text-align: center; color: var(--text-secondary); font-size: 1.2rem; margin-bottom: 30px; }
.social-links { display: flex; justify-content: center; gap: 25px; }
.social-links a { color: var(--text-secondary); font-size: 2.5rem; transition: color 0.3s ease, transform 0.3s ease; }
.social-links a:hover { color: var(--primary-accent); transform: scale(1.2); }
footer { background-color: var(--footer-bg); padding: 20px; text-align: center; color: var(--text-secondary); transition: background-color 0.3s ease, color 0.3s ease; }

/* --- General Animations --- */
.about h2, .card, .skill-tag, .counter-container, .education-card { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.about h2.visible, .card.visible, .skill-tag.visible, .counter-container.visible, .education-card.visible { opacity: 1; transform: translateY(0); }
.card:nth-child(2), .education-card:nth-child(2) { transition-delay: 0.1s; } .card:nth-child(3) { transition-delay: 0.2s; }
.skill-tag:nth-child(1) { transition-delay: 0.05s; } .skill-tag:nth-child(2) { transition-delay: 0.1s; } .skill-tag:nth-child(3) { transition-delay: 0.15s; } .skill-tag:nth-child(4) { transition-delay: 0.2s; } .skill-tag:nth-child(5) { transition-delay: 0.25s; } .skill-tag:nth-child(6) { transition-delay: 0.3s; }

/* --- Chatbot Styles --- */
@keyframes pulse { 0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); } 70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); } 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); } }
.chatbot-icon { position: fixed; bottom: 25px; right: 25px; background-color: var(--primary-accent); color: white; width: 60px; height: 60px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; cursor: pointer; z-index: 1001; animation: pulse 2s infinite; }
.chatbot-container { position: fixed; bottom: 100px; right: 25px; width: 320px; height: 450px; border: 1px solid var(--border-color); border-radius: 15px; background-color: var(--bg-color); box-shadow: 0 10px 30px var(--shadow-color); overflow: hidden; display: none; flex-direction: column; transform: scale(0.5); opacity: 0; transition: transform 0.3s ease, opacity 0.3s ease, background-color 0.3s ease, border-color 0.3s ease; z-index: 1000; }
.chatbot-container.visible { display: flex; transform: scale(1); opacity: 1; }
.chatbot-header { padding: 15px; background-color: var(--secondary-accent); color: var(--text-heading); font-family: var(--font-heading); display: flex; justify-content: space-between; align-items: center; transition: background-color 0.3s ease, color 0.3s ease; }
.close-chatbot { background: none; border: none; color: var(--text-secondary); font-size: 24px; cursor: pointer; }
.chatbot-messages { flex: 1; overflow-y: auto; padding: 10px; }
.chatbot-message { padding: 8px 12px; margin: 5px; border-radius: 10px; max-width: 80%; word-wrap: break-word; line-height: 1.4; }
.chatbot-message.user-message { background-color: var(--primary-accent); color: white; margin-left: auto; border-bottom-right-radius: 2px; }
.chatbot-message.bot-message { background-color: var(--secondary-accent); color: var(--text-primary); margin-right: auto; border-bottom-left-radius: 2px; }
@keyframes typing { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
.typing-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background-color: var(--text-secondary); margin: 0 2px; animation: typing 1s infinite ease-in-out; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; } .typing-dot:nth-child(3) { animation-delay: 0.4s; }
.chatbot-input-area { display: flex; border-top: 1px solid var(--border-color); transition: border-color 0.3s ease; }
#chatbot-input { flex: 1; border: none; padding: 15px; background-color: var(--secondary-accent); color: var(--text-primary); outline: none; transition: background-color 0.3s ease, color 0.3s ease; }
#chat-button { background-color: var(--primary-accent); color: white; border: none; padding: 0 20px; cursor: pointer; font-size: 1.2rem; transition: background-color 0.3s ease; }
#chat-button:hover { background-color: var(--primary-accent-darker); }

/* --- 📱 Media Queries for Responsiveness 📱 --- */
@media screen and (max-width: 768px) {
  /*
  * FINAL FIX FOR MOBILE NAVIGATION:
  * This section makes the mobile menu visible and functional.
  * The desktop bar's visual styles are reset, but the container remains
  * so the menu toggle inside it can be displayed.
  */
  .navbar {
    background: transparent;
    backdrop-filter: none;
    border-bottom: none;
    padding: 0;
    justify-content: flex-start; /* Align items to the start */
  }

  .primary-navigation {
    display: flex;
    position: fixed;
    z-index: 1000;
    inset: 0 0 0 30%;
    flex-direction: column;
    padding: min(20vh, 10rem) 2em;
    gap: 2em;
    background: var(--navbar-bg);
    backdrop-filter: blur(1rem);
    transform: translateX(100%);
    transition: transform 350ms ease-out;
  }
  
  /* Hide desktop links when mobile nav is not active */
  .navbar ul {
    display: none;
  }

  .primary-navigation[data-visible="true"] {
    transform: translateX(0%);
    display: flex; /* Ensure it's visible when active */
  }
  
  .mobile-nav-toggle {
    display: block;
    position: fixed;
    z-index: 9999;
    background-color: transparent;
    border: 0;
    width: 2rem;
    aspect-ratio: 1;
    top: 1.5rem;
    left: 1.5rem;
    cursor: pointer;
  }

  .mobile-nav-toggle::before,
  .mobile-nav-toggle::after {
    content: '';
    position: absolute;
    width: 2rem;
    height: 3px;
    left: 0;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform 350ms ease, opacity 350ms ease;
  }
  .mobile-nav-toggle::before { top: 25%; }
  .mobile-nav-toggle::after { bottom: 25%; }
  .mobile-nav-toggle[aria-expanded="true"]::before { transform: rotate(45deg) translate(6px, 6px); }
  .mobile-nav-toggle[aria-expanded="true"]::after { transform: rotate(-45deg) translate(5px, -5px); }
  
  /* Other responsive adjustments */
  h2 { font-size: 2rem; }
  section { padding: 80px 15px; }
  .header { min-height: auto; padding: 120px 15px 80px 15px; }
  .title h1 { font-size: 2.5rem; }
  .title .sub-title { font-size: 1.2rem; min-height: 1.8rem; }
  .card-container { grid-template-columns: 1fr; }
  .card-header { flex-direction: column; align-items: flex-start; }
}

@media screen and (max-width: 499px) {
  .education-card {
    align-items: center;
  }
  .education-details {
    text-align: center;
  }
}
/* ============================================
   🎓 CERTIFICATIONS — Clean, Theme-Compatible
   ============================================ */

.certifications {
  background-color: var(--bg-color);
}

/* Grid Layout */
.certifications .card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.8rem;
  margin-top: 2rem;
}

/* Cards */
.certifications .card {
  background-color: var(--secondary-accent);
  border: 1px solid var(--border-color);
  padding: 1.8rem;
  border-radius: 14px;
  box-shadow: 0 5px 15px var(--shadow-color);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.certifications .card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-accent);
  box-shadow: 0 10px 24px var(--shadow-color);
}

/* Header (Title + Icon) */
.cert-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.cert-header h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-heading);
  flex: 1;
}

/* Certificate Icon Button */
.cert-icon {
  color: var(--primary-accent);
  font-size: 1rem;
  padding: 7px 8px;
  border-radius: 50%;
  background: var(--skill-tag-bg);
  border: 1px solid var(--border-color);
  transition: transform 0.2s ease-in-out, background-color 0.2s ease;
}

.cert-icon:hover {
  background-color: var(--primary-accent);
  color: #ffffff;
  transform: scale(1.15);
}

/* Subtitle (Issued Date) */
.certifications .card-subtitle {
  color: var(--text-secondary);
  margin: 0.5rem 0 0.7rem;
  font-size: 0.9rem;
  font-weight: 600;
}

/* Description Text */
.certifications .card p {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.55;
}