/* Global Stylesheet - Layout grid, shared components, header/footer themes */

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

/* Focus outlines for accessibility */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--sp-16);
  background-color: var(--color-primary);
  color: #fff;
  padding: var(--sp-8) var(--sp-16);
  border-radius: var(--r-8);
  z-index: 10001;
  text-decoration: none;
  font-weight: 500;
  transition: top var(--t-fast) var(--ease-premium);
}

.skip-link:focus {
  top: var(--sp-16);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--r-8);
  border: 2px solid var(--color-bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Container */
.container {
  max-width: 1280px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--sp-24);
  padding-right: var(--sp-24);
}

/* Custom cursors */
.custom-cursor-dot,
.custom-cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  will-change: transform;
}

.custom-cursor-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  margin-top: -3px;
  margin-left: -3px;
  transition: transform 80ms ease-out, background-color var(--t-fast) var(--ease-premium), width var(--t-fast) var(--ease-premium), height var(--t-fast) var(--ease-premium);
}

.custom-cursor-ring {
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--color-primary);
  margin-top: -18px;
  margin-left: -18px;
  transition: transform 120ms ease-out, border-color var(--t-fast) var(--ease-premium), background-color var(--t-fast) var(--ease-premium), width var(--t-fast) var(--ease-premium), height var(--t-fast) var(--ease-premium);
}

.custom-cursor-dot.cursor-hover {
  width: 4px;
  height: 4px;
  background-color: var(--color-secondary);
}

.custom-cursor-ring.cursor-hover {
  width: 48px;
  height: 48px;
  border-color: var(--color-secondary);
  background-color: hsla(var(--secondary-hsl), 0.05);
}

.custom-cursor-dot.cursor-active {
  background-color: var(--color-accent);
}

.custom-cursor-ring.cursor-active {
  border-color: var(--color-accent);
  background-color: hsla(var(--accent-hsl), 0.1);
  transform: scale(0.85);
}

/* Page Transition Screen */
page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--color-bg);
  z-index: 9999;
  opacity: 1;
  pointer-events: all;
  transition: opacity var(--t-slow) var(--ease-premium);
  display: flex;
  justify-content: center;
  align-items: center;
}

page-transition:not([active]) {
  opacity: 0;
  pointer-events: none;
}

.transition-container {
  position: relative;
  width: 80px;
  height: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.transition-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255, 255, 255, 0.05);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
  z-index: 2;
}

.transition-spinner-glow {
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  box-shadow: 0 0 30px var(--color-primary);
  opacity: 0.3;
  z-index: 1;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Shared Buttons */
.btn-container {
  display: flex;
  gap: var(--sp-16);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-12) var(--sp-24);
  font-family: var(--font-headings);
  font-size: var(--fs-base);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--r-8);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  transition: transform var(--t-fast) var(--ease-premium), box-shadow var(--t-fast) var(--ease-premium);
  will-change: transform;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6), var(--shadow-glow);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background-color: hsla(var(--text-hsl), 0.05);
  border-color: var(--color-accent);
}

/* Button Ripple Spans */
.btn-ripple-span {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  pointer-events: none;
  animation: ripple 600ms linear;
}

[data-theme="light"] .btn-ripple-span {
  background-color: rgba(0, 0, 0, 0.15);
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Shared Card: Glassmorphism */
.glass-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--r-16);
  padding: var(--sp-24);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-premium);
  transition: transform var(--t-normal) var(--ease-premium), border-color var(--t-normal) var(--ease-premium), box-shadow var(--t-normal) var(--ease-premium);
  position: relative;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  background: var(--glass-reflection);
  pointer-events: none;
  z-index: 1;
}

.glass-card:hover {
  border-color: hsla(var(--accent-hsl), 0.3);
  box-shadow: var(--shadow-premium), var(--shadow-glow);
}

/* Shared Titles */
.section-title-container {
  margin-bottom: var(--sp-48);
  text-align: center;
}

.section-title {
  font-family: var(--font-headings);
  font-size: var(--fs-3xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--sp-12);
}

.section-title span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  font-size: var(--fs-md);
  color: var(--color-muted);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Header / Navbar Component Styling */
.navbar-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  z-index: 1000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  background-color: hsla(var(--bg-hsl), 0.6);
  transition: background-color var(--t-normal) var(--ease-premium);
}

.navbar-container {
  max-width: 1280px;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--sp-24);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  font-family: var(--font-headings);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo-accent {
  color: var(--color-accent);
}

.navbar-nav {
  display: flex;
  gap: var(--sp-32);
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--fs-sm);
  position: relative;
  padding: var(--sp-8) 0;
  transition: color var(--t-fast) var(--ease-premium);
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-normal) var(--ease-premium);
}

.nav-link:hover::after,
.nav-link.active-nav::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-link.active-nav {
  color: var(--color-accent);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-16);
}

/* Theme Switcher */
.theme-switcher {
  position: relative;
}

.theme-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--r-8);
  padding: var(--sp-8) var(--sp-12);
  color: var(--color-text);
  cursor: pointer;
  font-family: var(--font-headings);
  font-size: var(--fs-xs);
  transition: border-color var(--t-fast) var(--ease-premium);
}

.theme-btn:hover {
  border-color: var(--color-accent);
}

.theme-icon {
  stroke-width: 2px;
}

.theme-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--sp-8);
  background: var(--color-surface-raw);
  border: 1px solid var(--color-border);
  border-radius: var(--r-8);
  padding: var(--sp-4);
  list-style: none;
  box-shadow: var(--shadow-premium);
  min-width: 140px;
  z-index: 1001;
}

.theme-dropdown li {
  padding: var(--sp-8) var(--sp-12);
  font-size: var(--fs-xs);
  cursor: pointer;
  border-radius: var(--r-8);
  color: var(--color-muted);
  transition: background-color var(--t-fast) var(--ease-premium), color var(--t-fast) var(--ease-premium);
}

.theme-dropdown li:hover {
  background-color: var(--color-primary);
  color: #fff;
}

.theme-dropdown li.selected-theme-opt {
  color: var(--color-accent);
  font-weight: 600;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1002;
}

.mobile-bar {
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--r-8);
  transition: transform var(--t-normal) var(--ease-premium), opacity var(--t-normal) var(--ease-premium);
}

/* Mobile Menu Panel */
.mobile-menu {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  height: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
  transition: height var(--t-normal) var(--ease-premium);
  z-index: 999;
}

.mobile-menu-active {
  height: 300px;
}

.mobile-nav {
  padding: var(--sp-24);
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
}

.mobile-link {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--fs-md);
  font-weight: 500;
  padding: var(--sp-8) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--t-fast) var(--ease-premium);
}

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

/* Toggle transformations */
.mobile-toggle.toggle-active .bar-1 {
  transform: translateY(8px) rotate(45deg);
}

.mobile-toggle.toggle-active .bar-2 {
  opacity: 0;
}

.mobile-toggle.toggle-active .bar-3 {
  transform: translateY(-8px) rotate(-45deg);
}

/* Footer Styling */
.portfolio-footer {
  background-color: var(--color-surface-raw);
  border-top: 1px solid var(--color-border);
  padding: var(--sp-64) 0 var(--sp-32) 0;
  margin-top: var(--sp-96);
  position: relative;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--sp-24);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--sp-48);
}

.footer-left .footer-logo {
  font-family: var(--font-headings);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  margin-bottom: var(--sp-16);
  display: inline-block;
}

.footer-desc {
  color: var(--color-muted);
  max-width: 320px;
  font-size: var(--fs-sm);
}

.footer-title {
  font-family: var(--font-headings);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: var(--sp-24);
  color: var(--color-text);
}

.footer-list {
  list-style: none;
}

.footer-list li {
  margin-bottom: var(--sp-12);
}

.footer-list a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: color var(--t-fast) var(--ease-premium);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-8);
}

.footer-list a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  max-width: 1280px;
  margin: var(--sp-48) auto 0 auto;
  padding: var(--sp-24) var(--sp-24) 0 var(--sp-24);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.copyright {
  color: var(--color-muted);
  font-size: var(--fs-xs);
}

/* Back To Top Button */
.back-to-top-btn {
  position: fixed;
  bottom: var(--sp-24);
  right: var(--sp-24);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: var(--shadow-premium);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--t-normal) var(--ease-premium), transform var(--t-normal) var(--ease-premium), border-color var(--t-fast) var(--ease-premium), color var(--t-fast) var(--ease-premium);
  z-index: 998;
}

.back-to-top-btn.show-back-to-top {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-3px);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .footer-container {
    gap: var(--sp-32);
  }
}

@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: var(--sp-32);
  }
  
  .footer-left, .footer-links, .footer-socials {
    text-align: center;
  }
  
  .footer-desc {
    margin: 0 auto;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--sp-16);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: var(--sp-16);
    padding-right: var(--sp-16);
  }
  
  .btn {
    width: 100%;
  }
  
  .btn-container {
    flex-direction: column;
  }
}