/* ============================================================
   CYBERPUNK DESIGN SYSTEM — components.css
   Reusable UI Components
   ============================================================ */

@import './variables.css';

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  text-decoration: none;
  padding: 0 var(--space-6);
  height: var(--btn-height-md);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
}

.btn:hover::before {
  transform: translateX(100%);
}

/* Button Variants */
.btn-primary {
  background: var(--color-cyan);
  color: var(--color-bg-primary);
  border-color: var(--color-cyan);
  box-shadow: var(--glow-cyan-sm);
}

.btn-primary:hover {
  background: var(--color-cyan-dim);
  box-shadow: var(--glow-cyan-md);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-cyan);
  border-color: var(--color-cyan);
}

.btn-secondary:hover {
  background: var(--color-cyan-glow);
  box-shadow: var(--glow-cyan-sm);
}

.btn-magenta {
  background: var(--color-magenta);
  color: var(--color-bg-primary);
  border-color: var(--color-magenta);
  box-shadow: var(--glow-magenta-sm);
}

.btn-magenta:hover {
  box-shadow: var(--glow-magenta-md);
  transform: translateY(-2px);
}

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

.btn-ghost:hover {
  color: var(--color-cyan);
  border-color: var(--color-cyan);
  background: var(--color-cyan-glow);
}

/* Button Sizes */
.btn-sm {
  height: var(--btn-height-sm);
  padding: 0 var(--space-4);
  font-size: var(--font-size-xs);
}

.btn-lg {
  height: var(--btn-height-lg);
  padding: 0 var(--space-8);
  font-size: var(--font-size-base);
}

/* Icon Button */
.btn-icon {
  width: var(--btn-height-md);
  height: var(--btn-height-md);
  padding: 0;
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

/* ============================================================
   CARDS
   ============================================================ */

.card {
  background: var(--color-bg-card);
  border: var(--card-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.card::before,
.card::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--color-cyan);
  border-style: solid;
  transition: all var(--transition-base);
  z-index: 2;
}

.card::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.card::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.card:hover {
  border-color: var(--color-cyan);
  box-shadow: var(--glow-cyan-sm);
  transform: translateY(-4px);
}

.card:hover::before,
.card:hover::after {
  width: 20px;
  height: 20px;
}

.card-header {
  padding: var(--card-padding);
  border-bottom: 1px solid var(--color-border-subtle);
}

.card-body {
  padding: var(--card-padding);
}

.card-footer {
  padding: var(--space-4) var(--card-padding);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Card Variants */
.card-magenta::before,
.card-magenta::after {
  border-color: var(--color-magenta);
}

.card-magenta:hover {
  border-color: var(--color-magenta);
  box-shadow: var(--glow-magenta-sm);
}

/* ============================================================
   NAVIGATION
   ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(5, 5, 16, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-default);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(5, 5, 16, 0.98);
  box-shadow: var(--shadow-lg);
}

.navbar-inner {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-black);
  color: var(--color-cyan);
  text-decoration: none;
  letter-spacing: var(--letter-spacing-wider);
  text-shadow: var(--glow-text-cyan);
  transition: all var(--transition-fast);
}

.nav-logo:hover {
  text-shadow: var(--glow-cyan-md);
}

.nav-logo span {
  color: var(--color-magenta);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
  transition: all var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-cyan);
  box-shadow: var(--glow-cyan-sm);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-cyan);
  text-shadow: var(--glow-text-cyan);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-cyan);
  transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   BREADCRUMB
   ============================================================ */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-cyan);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-shadow: var(--glow-text-cyan);
}

.breadcrumb-separator {
  color: var(--color-magenta);
}

.breadcrumb-current {
  color: var(--color-text-secondary);
}

/* ============================================================
   TAGS & BADGES
   ============================================================ */

.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
  background: transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.tag:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  background: var(--color-cyan-glow);
}

.tag-cyan {
  border-color: rgba(0, 240, 255, 0.3);
  color: var(--color-cyan);
  background: var(--color-cyan-glow);
}

.tag-magenta {
  border-color: rgba(255, 0, 255, 0.3);
  color: var(--color-magenta);
  background: var(--color-magenta-glow);
}

.tag-green {
  border-color: rgba(0, 255, 136, 0.3);
  color: var(--color-green);
  background: var(--color-green-glow);
}

.tag-yellow {
  border-color: rgba(240, 224, 0, 0.3);
  color: var(--color-yellow);
  background: var(--color-yellow-glow);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  background: var(--color-cyan);
  color: var(--color-bg-primary);
}

.badge-magenta {
  background: var(--color-magenta);
}

.badge-green {
  background: var(--color-green);
  color: var(--color-bg-primary);
}

/* ============================================================
   PAGINATION
   ============================================================ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.page-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid var(--color-border-default);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.page-btn:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  background: var(--color-cyan-glow);
}

.page-btn.active {
  background: var(--color-cyan);
  border-color: var(--color-cyan);
  color: var(--color-bg-primary);
  box-shadow: var(--glow-cyan-sm);
}

.page-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.page-btn svg {
  width: 16px;
  height: 16px;
}

/* ============================================================
   SEARCH
   ============================================================ */

.search-box {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.search-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  padding-left: var(--space-12);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.search-input:focus {
  border-color: var(--color-cyan);
  box-shadow: var(--glow-cyan-sm);
  outline: none;
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-input:focus + .search-icon {
  color: var(--color-cyan);
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  position: relative;
  padding: var(--space-16) var(--space-6);
  border-top: 1px solid var(--color-border-default);
  background: var(--color-bg-secondary);
}

.footer-grid {
  max-width: var(--container-xl);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-black);
  color: var(--color-cyan);
  text-shadow: var(--glow-text-cyan);
  margin-bottom: var(--space-4);
}

.footer-desc {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  box-shadow: var(--glow-cyan-sm);
}

.footer-title {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-cyan);
  margin-bottom: var(--space-6);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-cyan);
  padding-left: var(--space-2);
}

.footer-bottom {
  max-width: var(--container-xl);
  margin: var(--space-12) auto 0;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.footer-bottom span {
  color: var(--color-cyan);
}

/* ============================================================
   LOADING & STATES
   ============================================================ */

.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg-overlay);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 2px solid var(--color-border-default);
  border-top-color: var(--color-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-text {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-cyan);
  letter-spacing: var(--letter-spacing-widest);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-24);
}

.empty-icon {
  font-size: var(--font-size-6xl);
  margin-bottom: var(--space-6);
  opacity: 0.3;
}

.empty-title {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.empty-desc {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* ============================================================
   BACK TO TOP
   ============================================================ */

.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  color: var(--color-cyan);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-raised);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  border-color: var(--color-cyan);
  box-shadow: var(--glow-cyan-sm);
  transform: translateY(-4px);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-magenta));
  box-shadow: var(--glow-cyan-sm);
  z-index: var(--z-tooltip);
  transform-origin: left;
  transform: scaleX(0);
}

/* ============================================================
   IMAGE LIGHTBOX
   ============================================================ */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border-default);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lightbox-close:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
}

/* ============================================================
   CODE BLOCK
   ============================================================ */

.code-block {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-left: 3px solid var(--color-cyan);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--color-border-subtle);
}

.code-lang {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.code-copy {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border-default);
  padding: var(--space-1) var(--space-3);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.code-copy:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
}

.code-copy.copied {
  border-color: var(--color-green);
  color: var(--color-green);
}

.code-block pre {
  margin: 0;
  padding: var(--space-6);
  overflow-x: auto;
  border: none;
}

.code-block pre::before {
  display: none;
}

/* ============================================================
   TOOLTIP
   ============================================================ */

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-primary);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-4px);
}