/* --- Global Styles & Variables --- */
:root {
  /* Dark theme default */
  --bg-color: #0a0a1a;
  --primary-color: #00ffff; /* Neon Cyan */
  --secondary-color: #ff00ff; /* Neon Magenta */
  --tertiary-color: #00ff00; /* Neon Lime */
  --text-color: #e0e0e0;
  --heading-color: #fff;
  --link-color: #00ffff;
  --link-hover-color: #ff00ff;
  --card-bg-color: rgba(26, 26, 58, 0.7);
  --card-border-color: rgba(0, 255, 255, 0.5);
  --header-height: 70px;
}
[data-theme="light"] {
  --bg-color: #f0f4f8;
  --text-color: #1a1a2e;
  --heading-color: #0f0f1e;
  --link-color: #0066cc;
  --link-hover-color: #cc0066;
  --primary-color: #0088cc;
  --secondary-color: #cc0088;
  --tertiary-color: #00aa00;
  --card-bg-color: #ffffff;
  --card-border-color: rgba(0, 136, 204, 0.25);
}

*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Exo 2', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 { color: var(--heading-color); text-shadow: 0 0 5px var(--primary-color); }
[data-theme="light"] h1, [data-theme="light"] h2, [data-theme="light"] h3, [data-theme="light"] h4, [data-theme="light"] h5, [data-theme="light"] h6 {
  color: var(--heading-color); text-shadow: none;
}
a { color: var(--link-color); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--link-hover-color); }
img, video { max-width: 100%; height: auto; display: block; border-radius: 8px; }

/* --- 3D Background (Homepage Only) --- */
#bg-3d { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; opacity: 0.3; }

/* --- Starfield Background Animation (All Pages) --- */
#starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* --- Header & Navigation (Shared) --- */
.header {
  position: sticky; top: 0; left: 0; width: 100%; z-index: 100;
  background: rgba(10, 10, 26, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border-color);
}
[data-theme="light"] .header { 
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 2px solid var(--card-border-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 2rem; height: var(--header-height);
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.nav-brand { font-size: 1.5rem; font-weight: 700; color: #fff; text-shadow: 0 0 8px var(--primary-color); }
[data-theme="light"] .nav-brand { 
  color: var(--primary-color);
  text-shadow: none;
}
.nav-links { display: flex; list-style: none; gap: 1.5rem; }
.nav-link { color: var(--text-color); font-weight: 600; padding: 0.5rem; position: relative; }
.nav-link::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
  background-color: var(--primary-color); transition: width 0.3s ease;
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link.active { color: var(--primary-color); }
[data-theme="light"] .nav-link {
  color: var(--text-color);
}
[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
  color: var(--primary-color);
}
.nav-toggle { display: none; font-size: 1.5rem; color: #fff; background: transparent; border: none; cursor: pointer; z-index: 110; }
[data-theme="light"] .nav-toggle { 
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  background: transparent;
}

/* Theme toggle button (inserted by JS) */
.theme-toggle {
  background: transparent; border: 1px solid var(--card-border-color); color: var(--text-color);
  border-radius: 999px; padding: 0.5rem 0.75rem; cursor: pointer; transition: transform 0.2s ease, background 0.2s ease;
}
.theme-toggle:hover { transform: translateY(-1px); background: rgba(0,0,0,0.05); }
[data-theme="light"] .theme-toggle {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  background: transparent;
}
[data-theme="light"] .theme-toggle:hover { 
  background: var(--primary-color);
  color: #ffffff;
}

/* --- Hero Section (Homepage Only) --- */
.hero-section {
  min-height: calc(100vh - var(--header-height));
  display: flex; align-items: center; justify-content: center; text-align: center; padding: 2rem; position: relative; overflow: hidden;
}
.hero-content { z-index: 10; }
.hero-title {
  font-size: 3.5rem; font-weight: 700; letter-spacing: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  text-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}
[data-theme="light"] .hero-title { text-shadow: none; }
.hero-subtitle { font-size: 1.5rem; margin: 1rem 0 2rem; color: #fff; }
[data-theme="light"] .hero-subtitle { color: #0a0a1a; }

.cta-button {
  display: inline-block; font-size: 1rem; font-weight: 700; color: #0a0a1a; background-color: var(--primary-color);
  padding: 0.75rem 2rem; border: 2px solid var(--primary-color); border-radius: 5px; text-transform: uppercase; transition: all 0.3s ease;
  box-shadow: 0 0 15px var(--primary-color);
}
.cta-button:hover { background-color: transparent; color: var(--primary-color); }
[data-theme="light"] .cta-button { 
  background: linear-gradient(135deg, #0088cc, #cc0088);
  color: #ffffff !important;
  border: none;
  box-shadow: 0 4px 12px rgba(0, 136, 204, 0.3);
}
[data-theme="light"] .cta-button:hover { 
  box-shadow: 0 6px 16px rgba(0, 136, 204, 0.4);
  transform: translateY(-2px);
  color: #ffffff !important;
}
[data-theme="light"] .cta-button-small {
  background: var(--primary-color);
  color: #ffffff !important;
  border: none;
}
[data-theme="light"] .cta-button-small:hover {
  background: var(--secondary-color);
  color: #ffffff !important;
}

/* --- General Content Section (Shared) --- */
.content-section { padding: 5rem 2rem; max-width: 1200px; margin: 0 auto; position: relative; }
.section-title { font-size: 2.5rem; text-align: center; margin-bottom: 3rem; color: var(--primary-color); text-transform: uppercase; }
[data-theme="light"] .section-title {
  color: var(--primary-color);
  background: linear-gradient(90deg, #0088cc, #cc0088);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
/* Fallback for browsers that don't support background-clip */
@supports not (-webkit-background-clip: text) {
  [data-theme="light"] .section-title {
    color: var(--primary-color);
    background: none;
  }
}
.section-subtitle { font-size: 1.2rem; text-align: center; color: var(--text-color); margin-top: -2rem; margin-bottom: 3rem; }

/* --- About Me Section (Shared) --- */
.about-container { display: flex; align-items: center; gap: 3rem; }
.profile-pic {
  width: 300px; height: 300px; object-fit: cover; border-radius: 50%; border: 4px solid var(--primary-color);
  box-shadow: 0 0 25px var(--primary-color);
}
[data-theme="light"] .profile-pic {
  border: 3px solid var(--primary-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
.about-text { flex: 1; }
.about-text h3 { font-size: 1.8rem; color: var(--primary-color); margin-bottom: 1rem; }
.about-text p { font-size: 1.1rem; margin-bottom: 1.5rem; }

/* --- Grids & Cards (Shared) --- */
.grid-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.card {
  background: var(--card-bg-color); border: 1px solid var(--card-border-color); border-radius: 10px; padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease; backdrop-filter: blur(5px); display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-10px); box-shadow: 0 0 20px var(--primary-color_low_opacity, rgba(0, 255, 255, 0.3)); border-color: var(--primary-color); }
[data-theme="light"] .card {
  background: var(--card-bg-color);
  border: 2px solid var(--card-border-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  border-color: var(--primary-color);
}
.card-image {
  width: 100%; height: 200px; object-fit: cover; border-radius: 8px; margin-bottom: 1rem; background-color: #1a1a3a;
}
[data-theme="light"] .card-image { 
  background-color: #e9eef9;
  border: 1px solid var(--card-border-color);
}
.card-icon { font-size: 3rem; color: var(--primary-color); margin-bottom: 1rem; text-align: center; display: block; width: 100%; }
[data-theme="light"] .card-icon {
  color: var(--primary-color);
}
.card-title { font-size: 1.5rem; margin-bottom: 0.75rem; color: var(--primary-color); }
.card-link { display: inline-block; margin-top: auto; padding-top: 1rem; font-weight: 700; }
[data-theme="light"] .skill-card {
  background: var(--card-bg-color);
  border: 2px solid var(--card-border-color);
}
[data-theme="light"] .certificate-card {
  background: var(--card-bg-color);
  border: 2px solid var(--card-border-color);
}
[data-theme="light"] .certificate-card img {
  border: 1px solid var(--card-border-color);
}

/* --- Blog Page --- */
.blog-container { display: grid; grid-template-columns: 1fr; gap: 2rem; max-width: 900px; margin: 0 auto; }
.blog-post-content { flex-grow: 1; }
.blog-excerpt { flex-grow: 1; }
[data-theme="light"] .blog-post {
  background: var(--card-bg-color);
  border: 2px solid var(--card-border-color);
  padding: 1.5rem;
  border-radius: 12px;
}

/* --- Contact & Feedback (Shared) --- */
.contact-container { text-align: center; max-width: 600px; margin: 0 auto; }
.contact-container p { font-size: 1.2rem; margin-bottom: 2rem; }
.social-links { margin-top: 2.5rem; display: flex; justify-content: center; gap: 2rem; }
.social-links a { font-size: 2rem; color: var(--text-color); transition: color 0.3s, transform 0.3s; }
.social-links a:hover { color: var(--primary-color); transform: scale(1.2); }
[data-theme="light"] .social-links a {
  background: #ffffff;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}
[data-theme="light"] .social-links a:hover {
  background: var(--primary-color);
  color: #ffffff;
}
.feedback-container { max-width: 700px; margin: 0 auto; }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.5rem; color: var(--primary-color); }
.form-group input, .form-group textarea {
  width: 100%; padding: 1rem; background: rgba(26, 26, 58, 0.9); border: 1px solid var(--card-border-color); border-radius: 5px; color: var(--text-color);
  font-family: 'Exo 2', sans-serif; font-size: 1rem;
}
[data-theme="light"] .form-group input, [data-theme="light"] .form-group textarea {
  background: rgba(255,255,255,0.9);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary-color); box-shadow: 0 0 10px var(--primary-color);
}
#feedback-thanks { text-align: center; padding: 2rem; }

/* --- Gallery Page --- */
.video-responsive { position: relative; overflow: hidden; padding-top: 56.25%; margin-bottom: 1rem; border-radius: 8px; }
.video-responsive iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

/* --- Footer (Shared) --- */
.footer { text-align: center; padding: 2rem; margin-top: 3rem; background: #050510; border-top: 1px solid var(--card-border-color); }
[data-theme="light"] .footer { 
  background: rgba(255, 255, 255, 0.98);
  border-top: 2px solid var(--card-border-color);
  color: var(--text-color);
  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.05);
}

/* --- Light Mode Text Elements --- */
[data-theme="light"] p,
[data-theme="light"] li,
[data-theme="light"] span,
[data-theme="light"] .desc,
[data-theme="light"] .card-description,
[data-theme="light"] .about-text p,
[data-theme="light"] .blog-excerpt,
[data-theme="light"] .contact-container p,
[data-theme="light"] .card-title,
[data-theme="light"] .blog-post-content h3 {
  color: var(--text-color);
}

/* --- General Contrast Helper (Form Elements) --- */
[data-theme="light"] button,
[data-theme="light"] input,
[data-theme="light"] textarea,
[data-theme="light"] select {
  border: 1px solid var(--card-border-color);
  background: #ffffff;
  color: var(--text-color);
}

/* --- Scroll Animations (Shared) --- */
.reveal { opacity: 0; transform: translateY(50px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* --- Responsive Design (Shared) --- */
@media (max-width: 1024px) {
  .about-container { flex-direction: column; text-align: center; }
  .profile-pic { margin: 0 auto 2rem; }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 70%; height: 100vh; background: #1a1a3a;
    flex-direction: column; justify-content: center; align-items: center; gap: 2rem; transition: right 0.5s ease-in-out; z-index: 105;
  }
  [data-theme="light"] .nav-links { 
    background: #ffffff;
    border-left: 2px solid var(--card-border-color);
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
  }
  .nav-links.active { right: 0; }
  .nav-link { font-size: 1.2rem; }
  .nav-toggle { display: block; }
  .hero-title { font-size: 2.5rem; }
  .hero-subtitle { font-size: 1.2rem; }
  .section-title { font-size: 2rem; }
}

/* ========================================
   CRITICAL FIX: Ensure ALL text is visible in light mode
   These rules have high specificity to override any conflicts
   ======================================== */

/* Main content paragraphs */
[data-theme="light"] main p,
[data-theme="light"] section p,
[data-theme="light"] article p,
[data-theme="light"] .content-section p,
[data-theme="light"] .about-text p,
[data-theme="light"] .gallery-intro p,
[data-theme="light"] .contact-container p {
  color: var(--text-color) !important;
}

/* Div-wrapped text blocks */
[data-theme="light"] div[style*="text-align"] p,
[data-theme="light"] div[style*="max-width"] p {
  color: var(--text-color) !important;
}

/* Card descriptions */
[data-theme="light"] .card p,
[data-theme="light"] .card-description,
[data-theme="light"] .project-card p,
[data-theme="light"] .blog-post p,
[data-theme="light"] .blog-excerpt {
  color: var(--text-color) !important;
}

/* List items */
[data-theme="light"] main li,
[data-theme="light"] section li,
[data-theme="light"] article li {
  color: var(--text-color) !important;
}

/* Span elements */
[data-theme="light"] main span,
[data-theme="light"] section span,
[data-theme="light"] .card span {
  color: var(--text-color) !important;
}

/* Section subtitles and descriptions */
[data-theme="light"] .section-subtitle,
[data-theme="light"] .gallery-intro,
[data-theme="light"] .project-gallery p {
  color: var(--text-color) !important;
}

/* Hero subtitle */
[data-theme="light"] .hero-subtitle {
  color: var(--text-color) !important;
}

/* Ensure inline styles don't override */
[data-theme="light"] p[style],
[data-theme="light"] div[style] p {
  color: var(--text-color) !important;
}

/* Blog post content */
[data-theme="light"] .blog-post-content,
[data-theme="light"] .blog-post-content p {
  color: var(--text-color) !important;
}

/* Project detail pages */
[data-theme="light"] .project-detail p,
[data-theme="light"] .project-content p {
  color: var(--text-color) !important;
}

/* About page text blocks */
[data-theme="light"] main h2 + p,
[data-theme="light"] main h2 + div p,
[data-theme="light"] main h3 + p {
  color: var(--text-color) !important;
}

/* Light mode content sections - add opaque backgrounds for better contrast */
[data-theme="light"] .content-section,
[data-theme="light"] .project-gallery,
[data-theme="light"] .about-container,
[data-theme="light"] .blog-container,
[data-theme="light"] .contact-container,
[data-theme="light"] .feedback-container {
  background: var(--bg-color);
  padding: 2rem;
  border-radius: 8px;
}

/* Ensure main content areas have proper background */
[data-theme="light"] main {
  background: var(--bg-color);
}

/* Specific intro text sections that need opaque backgrounds */
[data-theme="light"] .gallery-intro,
[data-theme="light"] .project-gallery > .gallery-intro,
[data-theme="light"] main > section > div[style*="max-width"] {
  background: var(--bg-color);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}