/* ============================================
   COMPONENTS
   Reusable UI Elements
   ============================================ */

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-10);
  font-family: var(--font-primary);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

/* Primary Button */
.btn-primary {
  background: var(--gradient-primary);
  color: #FFFFFF !important;
  box-shadow:
    0 4px 16px rgba(var(--color-primary-rgb), 0.3),
    0 0 40px rgba(var(--color-primary-rgb), 0.2);
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow:
    0 16px 40px rgba(var(--color-primary-rgb), 0.5),
    0 0 60px rgba(var(--color-primary-rgb), 0.4);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-primary:active {
  transform: translateY(-1px) scale(1.01);
}

/* Secondary Button */
.btn-secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary) !important;
  border: 2px solid var(--color-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-secondary:hover {
  background: rgba(var(--color-primary-rgb), 0.1);
  border-color: var(--color-accent);
  color: var(--color-accent) !important;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 28px rgba(var(--color-primary-rgb), 0.35);
}

/* Outline Button */
.btn-outline {
  background: rgba(var(--color-primary-rgb), 0.05);
  color: var(--color-primary) !important;
  border: 2px solid var(--color-primary);
  box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.15);
}

.btn-outline:hover {
  background: var(--gradient-primary);
  border-color: var(--color-primary);
  color: #FFFFFF !important;
  transform: translateY(-3px) scale(1.02);
  box-shadow:
    0 12px 32px rgba(var(--color-primary-rgb), 0.4),
    0 0 40px rgba(var(--color-primary-rgb), 0.3);
}

/* Button Sizes */
.btn-large {
  padding: var(--space-6) var(--space-12);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
}

.btn-small {
  padding: var(--space-3) var(--space-7);
  font-size: var(--text-base);
}

/* ============ Section Headers ============ */

.section-header {
  margin-bottom: var(--space-12);
}

.section-header.centered {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-16);
}

.section-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--text-5xl);
  }
}

@media (min-width: 1024px) {
  .section-title {
    font-size: var(--text-6xl);
  }
}

.section-description {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 600px;
}

.section-header.centered .section-description {
  margin-left: auto;
  margin-right: auto;
}

/* ============ Cards ============ */

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-elevation-3);
}

/* ============ Navigation ============ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.95);
  box-shadow: var(--shadow-elevation-2);
}

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

@media (min-width: 1024px) {
  .nav-container {
    padding: 0 var(--space-12);
  }
}

.nav-logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.logo-text {
  color: var(--color-text-primary);
}

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

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

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

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
  }
}

.nav-link {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* Mobile Navigation Toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  z-index: var(--z-fixed);
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
}

.nav-toggle-line {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

body.mobile-nav-active .nav-toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

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

body.mobile-nav-active .nav-toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu */
@media (max-width: 1023px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    flex-direction: column;
    gap: 0;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }

  body.mobile-nav-active .nav-menu {
    display: flex;
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    padding: var(--space-4);
    width: 100%;
    text-align: center;
  }

  .nav-link.active::after {
    display: none;
  }
}

/* ============ Scroll to Top Button ============ */

.scroll-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.scroll-top svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-text-inverse);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(var(--color-primary-rgb), 0.5);
}

/* ============ Preloader ============ */

.preloader {
  position: fixed;
  inset: 0;
  background: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-preloader);
  transition: opacity var(--transition-slow);
}

.preloader.hidden {
  opacity: 0;
  pointer-events: none;
}

.preloader-content {
  text-align: center;
}

.loader {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-4);
}

.loader-text {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

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

/* ============ Tags ============ */

.tag {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  border-radius: var(--radius-md);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

/* ============ Icons ============ */

.icon {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

/* ============ Links ============ */

.link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color var(--transition-fast);
}

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

/* ============ Custom Cursor ============ */

.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: var(--z-max);
  mix-blend-mode: difference;
  display: none; /* Hidden by default, enabled via JS on desktop */
}

.custom-cursor.active {
  display: block;
}

.cursor-dot {
  position: fixed;
  width: 14px;
  height: 14px;
  background: var(--color-primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.15s ease, height 0.15s ease, background 0.15s ease;
  will-change: transform;
}

.cursor-outline {
  position: fixed;
  width: 55px;
  height: 55px;
  border: 3px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease, border-color 0.3s ease;
  will-change: transform;
}

/* Cursor hover states */
.custom-cursor.hover .cursor-dot {
  width: 26px;
  height: 26px;
  background: var(--color-accent);
}

.custom-cursor.hover .cursor-outline {
  width: 85px;
  height: 85px;
  border-color: rgba(0, 212, 255, 0.9);
}

/* Hide default cursor when custom is active */
body.custom-cursor-active,
body.custom-cursor-active * {
  cursor: none !important;
}

/* Cursor clicked state */
.custom-cursor.clicked .cursor-dot {
  transform: translate(-50%, -50%) scale(0.8);
}

.custom-cursor.clicked .cursor-outline {
  transform: translate(-50%, -50%) scale(1.2);
}