/* ===== GSF – Games Sidebar & Filter ===== */
:root {
  --gsf-accent: #ff4757;
  --gsf-accent-dark: #c0392b;
  --gsf-speed: 350ms;
  --gsf-radius: 14px;
  --gsf-panel-width: 300px;
  --gsf-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --gsf-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== FLOATING BUTTON ===== */
.gsf-float-btn {
  position: fixed;
  bottom: 28px;
  right: 20px;
  z-index: 9998;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 20px 0 14px;
  height: 52px;
  background: var(--gsf-accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .3px;
  box-shadow: 0 4px 20px rgba(0,0,0,.22);
  transition: transform var(--gsf-speed) var(--gsf-spring),
              box-shadow var(--gsf-speed) var(--gsf-ease),
              background var(--gsf-speed) var(--gsf-ease);
  animation: gsf-float-in .6s var(--gsf-spring) both;
}

@keyframes gsf-float-in {
  from { transform: translateY(80px) scale(.8); opacity: 0; }
  to   { transform: translateY(0) scale(1); opacity: 1; }
}

.gsf-float-btn:hover {
  background: var(--gsf-accent-dark);
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 8px 28px rgba(0,0,0,.28);
}

.gsf-float-btn:active { transform: translateY(0) scale(.97); }

.gsf-float-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 999px;
  animation: gsf-pulse 2.4s ease-out infinite;
}

@keyframes gsf-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255,71,87,.5); }
  70%  { box-shadow: 0 0 0 14px rgba(255,71,87,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,71,87,0); }
}

.gsf-float-btn.gsf-open::after { animation: none; }

.gsf-float-icon {
  display: flex;
  align-items: center;
  transition: transform var(--gsf-speed) var(--gsf-spring),
              opacity var(--gsf-speed) var(--gsf-ease);
}

.gsf-icon-close {
  position: absolute;
  left: 14px;
  opacity: 0;
  transform: rotate(-90deg) scale(.5);
}

.gsf-float-btn.gsf-open .gsf-icon-filter {
  opacity: 0;
  transform: rotate(90deg) scale(.5);
}

.gsf-float-btn.gsf-open .gsf-icon-close {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.gsf-float-label { transition: opacity var(--gsf-speed) var(--gsf-ease); }

.gsf-float-btn.gsf-open .gsf-float-label {
  opacity: 0;
  width: 0;
  overflow: hidden;
  padding: 0;
  margin: 0;
}

/* ===== OVERLAY ===== */
.gsf-overlay {
  position: fixed;
  inset: 0;
  z-index: 9996;
  background: rgba(0,0,0,.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--gsf-speed) var(--gsf-ease);
}

.gsf-overlay.gsf-visible {
  opacity: 1;
  pointer-events: all;
}

/* ===== MOBILE PANEL ===== */
.gsf-mobile-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 9997;
  width: var(--gsf-panel-width);
  max-width: 90vw;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--gsf-speed) var(--gsf-ease);
  overflow: hidden;
  will-change: transform;
}

.gsf-mobile-panel.gsf-panel-open {
  transform: translateX(0) !important;
}

/* Panel Header */
.gsf-panel-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px;
  background: var(--gsf-accent);
  color: #fff;
  flex-shrink: 0;
}

.gsf-panel-logo {
  font-size: 20px;
  animation: gsf-logo-bounce 2s ease-in-out infinite;
}

@keyframes gsf-logo-bounce {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-4px); }
}

.gsf-panel-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  flex: 1;
  color: #fff;
}

.gsf-panel-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: rgba(255,255,255,.2);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  color: #fff;
  transition: background var(--gsf-speed) var(--gsf-ease),
              transform var(--gsf-speed) var(--gsf-spring);
}

.gsf-panel-close:hover {
  background: rgba(255,255,255,.35);
  transform: rotate(90deg);
}

/* Search */
.gsf-panel-search {
  position: relative;
  padding: 12px 14px;
  border-bottom: 1px solid #f0f0f0;
  flex-shrink: 0;
  background: #fff;
}

.gsf-search-input {
  width: 100%;
  height: 38px;
  padding: 0 36px 0 14px;
  border: 1.5px solid #e8e8e8;
  border-radius: 999px;
  font-size: 13px;
  font-family: inherit;
  background: #f8f8f8;
  box-sizing: border-box;
  outline: none;
  color: #333;
  transition: border-color var(--gsf-speed) var(--gsf-ease),
              box-shadow var(--gsf-speed) var(--gsf-ease),
              background var(--gsf-speed) var(--gsf-ease);
}

.gsf-search-input:focus {
  border-color: var(--gsf-accent);
  box-shadow: 0 0 0 3px rgba(255,71,87,.1);
  background: #fff;
}

.gsf-search-icon {
  position: absolute;
  right: 26px;
  top: 50%;
  transform: translateY(-50%);
  color: #bbb;
  pointer-events: none;
  display: flex;
}

/* Panel scroll area */
.gsf-panel-cats {
  flex: 1;
  overflow-y: auto;
  padding: 6px 0;
  background: #fff;
  scrollbar-width: thin;
  scrollbar-color: #ddd transparent;
}

.gsf-panel-cats::-webkit-scrollbar { width: 3px; }
.gsf-panel-cats::-webkit-scrollbar-thumb { background: #ddd; border-radius: 3px; }

/* ===== CATEGORY LIST ===== */
.gsf-category-list {
  list-style: none;
  margin: 0;
  padding: 4px 0;
}

.gsf-cat-item {
  --i: 0;
  opacity: 0;
  animation: gsf-slide-in calc(var(--gsf-speed)) var(--gsf-spring) forwards;
  animation-delay: calc(var(--i) * 45ms);
}

@keyframes gsf-slide-in {
  from { transform: translateX(24px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

.gsf-cat-link {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 11px 18px;
  text-decoration: none;
  color: #444;
  font-size: 14px;
  font-weight: 500;
  border-left: 3px solid transparent;
  background: #fff;
  transition: background var(--gsf-speed) var(--gsf-ease),
              border-color var(--gsf-speed) var(--gsf-ease),
              color var(--gsf-speed) var(--gsf-ease),
              padding-left var(--gsf-speed) var(--gsf-ease);
}

.gsf-cat-link:hover {
  color: var(--gsf-accent);
  border-left-color: var(--gsf-accent);
  background: #fff8f8;
  padding-left: 22px;
}

.gsf-cat-item.gsf-active .gsf-cat-link {
  color: var(--gsf-accent);
  border-left-color: var(--gsf-accent);
  background: #fff3f4;
  font-weight: 700;
}

.gsf-cat-name { flex: 1; }

.gsf-cat-count {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f0f0f0;
  color: #888;
  transition: background var(--gsf-speed) var(--gsf-ease),
              color var(--gsf-speed) var(--gsf-ease);
}

.gsf-cat-item.gsf-active .gsf-cat-count,
.gsf-cat-link:hover .gsf-cat-count {
  background: var(--gsf-accent);
  color: #fff;
}

.gsf-cat-item.gsf-hidden { display: none; }

/* ===== MOBILE MENU (appended after cats, no divider) ===== */
.gsf-panel-mobile-menu {
  border-top: 1px solid #f0f0f0;
  padding: 6px 0;
  background: #fff;
}

.gsf-mobile-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

.gsf-mobile-nav li a {
  display: block;
  padding: 10px 18px;
  font-size: 13.5px;
  font-weight: 500;
  color: #555;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color var(--gsf-speed) var(--gsf-ease),
              background var(--gsf-speed) var(--gsf-ease),
              border-color var(--gsf-speed) var(--gsf-ease),
              padding-left var(--gsf-speed) var(--gsf-ease);
}

.gsf-mobile-nav li a:hover {
  color: var(--gsf-accent);
  background: #fff8f8;
  border-left-color: var(--gsf-accent);
  padding-left: 22px;
}

/* ===== PANEL FOOTER ===== */
.gsf-panel-footer {
  padding: 10px 18px;
  font-size: 11px;
  color: #ccc;
  border-top: 1px solid #f0f0f0;
  text-align: center;
  background: #fff;
  flex-shrink: 0;
}

/* ===== SIDEBAR WIDGET (desktop) ===== */
.gsf-sidebar-widget {
  border-radius: var(--gsf-radius);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 16px rgba(0,0,0,.08);
}

.gsf-widget-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 700;
  background: var(--gsf-accent);
  color: #fff;
}

.gsf-widget-icon { font-size: 18px; }

.gsf-widget-search {
  position: relative;
  padding: 12px 14px;
  border-bottom: 1px solid #f0f0f0;
  background: #fff;
}

.gsf-animated-list { background: #fff; }

.gsf-animated-list .gsf-cat-item {
  opacity: 0;
  animation: gsf-slide-in var(--gsf-speed) var(--gsf-spring) forwards;
}

.gsf-no-results {
  padding: 16px 18px;
  font-size: 13px;
  color: #bbb;
  text-align: center;
  background: #fff;
}

/* ===== RESPONSIVE ===== */
@media (min-width: 1025px) {
  .gsf-float-btn,
  .gsf-overlay,
  .gsf-mobile-panel { display: none; }
}

/* Mobile — 768px and below */
@media (max-width: 768px) {
  .gsf-float-btn { display: flex; }
}

/* Tablet — 769px to 1024px */
@media (min-width: 769px) and (max-width: 1024px) {
  .gsf-float-btn {
    display: flex;
    bottom: 32px;
    height: 56px;
    padding: 0 24px 0 18px;
    font-size: 15px;
  }

  .gsf-mobile-panel {
    display: flex;
    --gsf-panel-width: 340px;
  }

  .gsf-overlay { display: block; }

  .gsf-panel-header { padding: 20px 18px; }
  .gsf-panel-title  { font-size: 17px; }

  .gsf-cat-link {
    padding: 13px 20px;
    font-size: 15px;
  }

  .gsf-cat-link:hover { padding-left: 25px; }

  .gsf-cat-item.gsf-active .gsf-cat-link { padding-left: 25px; }

  .gsf-search-input {
    height: 42px;
    font-size: 14px;
  }

  .gsf-cat-count {
    font-size: 12px;
    padding: 3px 10px;
  }
}