/*
Theme Name: Saravana Jagan Premium
Theme URI: https://saravanajagan.com
Author: Saravana Jagan
Author URI: https://saravanajagan.com
Description: Premium, solid-color 3D personal brand, tech publication, project showcase & digital product marketplace theme for Saravana Jagan featuring Facebook Blue and Three.js 3D graphics.
Version: 2.2.0
License: GNU General Public License v2 or later
Text Domain: saravanajagan
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-muted: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  
  --color-text-main: #0f172a;
  --color-text-muted: #475569;
  --color-text-light: #64748b;
  
  /* Facebook Blue Integration */
  --color-fb: #1877F2;
  --color-fb-hover: #166fe5;
  --color-fb-light: #e7f3ff;
  
  --color-primary: #0f172a;
  --color-secondary: #1877F2;
  
  --color-accent-emerald: #059669;
  --color-accent-amber: #d97706;
  --color-accent-purple: #7c3aed;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --max-width: 1240px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-main);
  background-color: var(--color-bg);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
}

a {
  color: var(--color-fb);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--color-fb-hover);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-main);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
}

.header-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text-main);
}

/* Solid Standard Facebook Blue Logo Box */
.site-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: #1877F2 !important;
  color: #ffffff !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: none !important;
  background-image: none !important;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-fb);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text-main);
}

/* Buttons - SOLID COLORS ONLY */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-fb);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(24, 119, 242, 0.3);
}
.btn-primary:hover {
  background-color: var(--color-fb-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(24, 119, 242, 0.4);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-main);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background-color: var(--color-surface-muted);
  border-color: var(--color-border-hover);
  color: var(--color-text-main);
  transform: translateY(-2px);
}

.btn-emerald {
  background-color: var(--color-accent-emerald);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.3);
}
.btn-emerald:hover {
  background-color: #047857;
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-hire-me {
  background-color: #1877F2 !important;
  color: #ffffff !important;
  font-weight: 700;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(24, 119, 242, 0.35);
  background-image: none !important;
}
.btn-hire-me:hover {
  background-color: #166fe5 !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(24, 119, 242, 0.5);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-blue {
  background-color: var(--color-fb-light);
  color: var(--color-fb);
}

.badge-emerald {
  background-color: #ecfdf5;
  color: var(--color-accent-emerald);
}

.badge-purple {
  background-color: #f3e8ff;
  color: var(--color-accent-purple);
}

.badge-amber {
  background-color: #fffbeb;
  color: var(--color-accent-amber);
}

/* SOLID Accent Highlights (No Gradients) */
.text-fb {
  color: var(--color-fb);
}

/* Cards & Surfaces with 3D Depth Hover Effects */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  transform-style: preserve-3d;
  perspective: 1000px;
}
.card:hover {
  border-color: var(--color-fb);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08), 0 4px 12px rgba(24, 119, 242, 0.12);
  transform: translateY(-4px) rotateX(1deg) rotateY(-1deg);
}

/* Grids */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* Sections */
.section {
  padding: 5rem 0;
}
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
}
.section-subtitle {
  color: var(--color-fb);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}
.section-title {
  font-size: 2.25rem;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.section-desc {
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* Hero Section with 3D Three.js Integration */
.hero-section {
  padding: 5rem 0 4rem 0;
  position: relative;
  overflow: hidden;
  background-color: #f8fafc;
  border-bottom: 1px solid var(--color-border);
}

.hero-wrapper {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-title {
  font-size: 3.25rem;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 600px;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.stat-item {
  display: flex;
  flex-direction: column;
}
.stat-number {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-fb);
}
.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-weight: 500;
}

/* 3D Three.js Canvas Container */
.hero-3d-wrapper {
  position: relative;
  width: 100%;
  height: 440px;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

#three-canvas-container {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

.hero-3d-overlay {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  background-color: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
  box-shadow: var(--shadow-md);
}

.profile-avatar-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: #1877F2 !important;
  color: #ffffff !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  box-shadow: none !important;
  background-image: none !important;
}

/* Capability Cards */
.capability-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.capability-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--color-fb-light);
  color: var(--color-fb);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}
.capability-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}
.capability-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* Tech Stack Category Card */
.stack-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}
.stack-title {
  font-size: 1.15rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tech-pill {
  background-color: var(--color-surface-muted);
  color: var(--color-text-main);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  transition: all 0.2s ease;
}
.tech-pill:hover {
  background-color: var(--color-fb-light);
  color: var(--color-fb);
  border-color: rgba(24, 119, 242, 0.3);
}

/* Project Card */
.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}
.project-thumb {
  width: 100%;
  height: 210px;
  background-color: var(--color-surface-muted);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--color-fb);
}
.project-thumb-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.project-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.project-title {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}
.project-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  line-height: 1.5;
}
.project-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* Blog Cards */
.post-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}
.post-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}
.post-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  line-height: 1.35;
}
.post-excerpt {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

/* Digital Product Card */
.product-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  position: relative;
}
.product-price-tag {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-fb);
  margin-bottom: 0.5rem;
}
.product-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}
.product-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

/* Hire Me Banner - SOLID COLOR */
.hire-banner {
  background-color: #0f172a;
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.hire-banner h2 {
  color: #ffffff;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.hire-banner p {
  color: #94a3b8;
  font-size: 1.15rem;
  max-width: 650px;
  margin: 0 auto 2.5rem auto;
}
.hire-banner-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
}

/* Reusable Monetization Components - SOLID COLORS */
.affiliate-box {
  background-color: var(--color-fb-light);
  border: 1px solid rgba(24, 119, 242, 0.2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2.5rem 0;
}
.affiliate-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}
.affiliate-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-fb);
  letter-spacing: 0.05em;
}
.affiliate-title {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.product-callout-box {
  background-color: #ffffff;
  border: 2px dashed var(--color-fb);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2.5rem 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: center;
}

.newsletter-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  margin: 3rem 0;
  box-shadow: var(--shadow-md);
}

/* Form inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 1.25rem;
  text-align: left;
}
.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-main);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-main);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-fb);
  box-shadow: 0 0 0 3px rgba(24, 119, 242, 0.15);
}

/* Article Styling */
.single-article {
  max-width: 800px;
  margin: 0 auto;
}
.article-header {
  margin-bottom: 2.5rem;
  text-align: center;
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-top: 1rem;
}
.article-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #334155;
}
.article-content p { margin-bottom: 1.5rem; }
.article-content h2 { font-size: 1.75rem; margin: 2.5rem 0 1rem 0; }
.article-content h3 { font-size: 1.4rem; margin: 2rem 0 0.85rem 0; }
.article-content ul, .article-content ol { margin: 0 0 1.5rem 1.5rem; }
.article-content li { margin-bottom: 0.5rem; }
.article-content blockquote {
  border-left: 4px solid var(--color-fb);
  padding-left: 1.25rem;
  font-style: italic;
  color: var(--color-text-muted);
  margin: 2rem 0;
}

/* Footer */
.site-footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 4rem 0 2rem 0;
  border-top: 1px solid #1e293b;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}
.footer-logo {
  color: #ffffff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-title {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
}
.footer-links a:hover {
  color: #ffffff;
}
.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

/* Mobile Responsive */
@media (max-width: 992px) {
  .hero-wrapper {
    grid-template-columns: 1fr;
  }
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .product-callout-box {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}