/* =========================================
   Base setup & design tokens
   ========================================= */

:root {
  /* Cloud Engineering Palette - Light Mode */
  --color-primary: #326CE5;   /* Kubernetes Blue */
  --color-secondary: #FF9900; /* AWS Orange */
  --color-tertiary: #2496ED;  /* Docker Blue */
  
  /* Neutrals */
  --bg-body: #F8F9FA;        /* Light Grey */
  --bg-panel: #FFFFFF;       /* White */
  --bg-panel-alt: #E9ECEF;   /* Light Grey Alt */

  --text-main: #232F3E;      /* AWS Dark Blue/Grey */
  --text-muted: #53657D;     /* Muted Blue Grey */

  --border-soft: rgba(50, 108, 229, 0.2);
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);

  --radius-soft: 8px;        /* More technical, less rounded */
  --radius-pill: 999px;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: 'Fira Code', monospace; /* For code snippets if any */

  --max-width: 1100px;       /* Slightly wider */
  --transition-fast: 0.2s ease;
  --transition-med: 0.3s ease;
}

/* Dark Mode Variables */
body.dark-mode {
  --color-primary: #5C8AE6;   /* Lighter Blue for dark mode */
  --color-secondary: #FFAC33; /* Lighter Orange */
  --color-tertiary: #57A6E8;  /* Lighter Docker Blue */

  --bg-body: #121212;        /* Deep Dark */
  --bg-panel: #1E1E1E;       /* Dark Panel */
  --bg-panel-alt: #2D2D2D;   /* Dark Panel Alt */

  --text-main: #E0E0E0;      /* Light Grey */
  --text-muted: #A0A0A0;     /* Muted Grey */

  --border-soft: rgba(92, 138, 230, 0.2);
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* Simple reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  transition: background-color var(--transition-med), color var(--transition-med);
}

h1, h2, h3, h4, h5, h6,
p {
  margin: 0;
}

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

/* =========================================
   Layout helpers
   ========================================= */

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.page-title,
.section-title {
  font-weight: 700;
  letter-spacing: -0.02em;
  position: relative;
}

.page-title {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Tech-styled underline */
.section-title::after {
  content: "";
  display: block;
  flex-grow: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  margin-left: 1rem;
  opacity: 0.5;
  max-width: 200px;
}

/* =========================================
   Navbar
   ========================================= */

#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  transition: background-color var(--transition-med);
}

body.dark-mode #site-header {
  background: rgba(18, 18, 18, 0.9);
}

.navbar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand a {
  font-weight: 800;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand a::before {
  content: "☁️"; /* Simple cloud icon */
  font-size: 1.4rem;
}

.navbar-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  align-items: center;
}

.navbar-toggle {
  display: none;
  border: none;
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-main);
}

.nav-link {
  display: inline-block;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

/* Theme Toggle Button */
#theme-toggle {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border-soft);
  color: var(--text-main);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

#theme-toggle:hover {
  background: var(--border-soft);
}

/* =========================================
   Hero section (Home)
   ========================================= */

#hero {
  padding-top: 4rem;
  padding-bottom: 4rem;
  background: radial-gradient(circle at top right, rgba(50, 108, 229, 0.1), transparent 40%);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-secondary);
  margin-bottom: 1rem;
  display: inline-block;
  background: rgba(255, 153, 0, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-title span {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 36rem;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-meta::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #10B981; /* Green status dot */
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.hero-photo img {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-soft);
  box-shadow: var(--shadow-soft);
  border: 2px solid var(--border-soft);
  background: var(--bg-panel);
}

/* =========================================
   Buttons
   ========================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-soft);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.primary-btn {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(50, 108, 229, 0.3);
}

.primary-btn:hover {
  background-color: #265bc7;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(50, 108, 229, 0.4);
}

.secondary-btn {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--border-soft);
}

.secondary-btn:hover {
  background-color: var(--bg-panel-alt);
  border-color: var(--text-muted);
}

.ghost-btn {
  background-color: transparent;
  color: var(--color-primary);
  padding: 0.5rem 1rem;
}

.ghost-btn:hover {
  text-decoration: underline;
}

/* =========================================
   Skills section
   ========================================= */

.skill-tags {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.skill-tags li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-soft);
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  color: var(--text-main);
  box-shadow: 0 2px 5px rgba(0,0,0,0.03);
  transition: transform var(--transition-fast);
}

.skill-tags li:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.skill-icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

/* =========================================
   Featured projects (home)
   ========================================= */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.projects-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.project-card {
  background-color: var(--bg-panel);
  border-radius: var(--radius-soft);
  padding: 2rem;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
}

.project-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.project-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-tech {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-family: var(--font-mono);
  margin-bottom: 1.5rem;
  background: rgba(50, 108, 229, 0.05);
  padding: 0.5rem;
  border-radius: 4px;
}

.project-link {
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.project-link:hover {
  color: var(--color-primary);
}

.section-cta {
  margin-top: 3rem;
  text-align: center;
}

/* =========================================
   "Now / Focus" strip
   ========================================= */

#now-focus {
  background: var(--bg-panel-alt);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: 3rem 0;
}

.now-text {
  font-size: 1.1rem;
  color: var(--text-main);
  max-width: 800px;
}

/* =========================================
   Contact card / social links
   ========================================= */
.contact-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-soft);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
}

.contact-links {
  display: grid;
  gap: 1rem;
  margin-top: 1.75rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--bg-panel-alt);
  border: 1px solid transparent;
  border-radius: var(--radius-soft);
  color: var(--text-main);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.social-link:hover {
  border-color: var(--color-primary);
  box-shadow: 0 10px 20px rgba(50, 108, 229, 0.08);
  transform: translateY(-1px);
}

.social-icon {
  width: 28px;
  height: 28px;
}

.contact-email {
  font-size: 1rem;
  color: var(--text-main);
  margin-top: 1.5rem;
}

.contact-email a {
  color: var(--color-primary);
  text-decoration: none;
}

.contact-email a:hover {
  text-decoration: underline;
}

.contact-note {
  color: var(--text-muted);
  margin-top: 1.5rem;
}

/* =========================================
   Footer
   ========================================= */

#site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-soft);
  background: var(--bg-panel);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--text-main);
  text-decoration: none;
  margin-left: 1.5rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* =========================================
   Responsive
   ========================================= */

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-meta {
    justify-content: center;
  }

  .hero-photo {
    order: -1;
    display: flex;
    justify-content: center;
  }

  .navbar-links {
    display: none; /* Mobile menu logic to be added if needed, keeping simple for now */
  }
  
  .navbar-toggle {
    display: block;
  }
  
  /* Simple mobile menu override for this task */
  .navbar-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-panel);
    padding: 1rem;
    border-bottom: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
  }
}