body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: url('../images/bg.png') no-repeat center center fixed;
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
  color: #fff;
  overflow-x: hidden;
}
header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  background-color: rgba(20, 20, 30, 0.85);
  padding: 15px 30px;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
}
.left-side {
  display: flex;
  align-items: center;
  gap: 30px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.site-logo img {
  width: 40px;
  height: 40px;
}
.site-name {
  font-size: 20px;
  font-weight: bold;
}
.nav-buttons {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 30px;
  line-height: 1;
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease, transform 0.2s ease;
}
.nav-button:hover {
  background: linear-gradient(90deg, #ff1a1a, #ff4d4d, #cc0000, #ff1a1a);
  background-size: 300%;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: redPulse 2.5s linear infinite;
}
.nav-button-pro {
  background: linear-gradient(90deg, #ff1a1a, #ff4d4d, #cc0000, #ff1a1a);
  background-size: 300%;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: redPulse 2.5s linear infinite;
}
@keyframes redPulse {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.language-select {
  display: flex;
  align-items: center;
  gap: 10px;
}
#lang-selector-top {
  background-color: rgba(30,30,40,0.9);
  border: 1px solid #ff1a1a;
  color: #fff;
  border-radius: 8px;
  padding: 5px 10px;
  font-size: 14px;
  cursor: pointer;
}
#lang-selector-top option {
  background-color: #20202a;
  color: #fff;
}

#lang-selector-top:focus { outline: none; }
.center-copy {
  margin-right: 6.77vw;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.center-copy .search-button,
.center-copy .sort-button {
  pointer-events: auto;
}
.center-copy .copyright {
  font-size: 14px;
  color: #ccc;
  pointer-events: auto;
}

.search-button, .sort-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  cursor: pointer;
  border-radius: 5px;
  transition: background 0.3s, transform 0.2s;
}
.search-button { margin-right: 3vw; }
.sort-button { margin-right: 6.77vw; }

.search-button:hover, .sort-button:hover { transform: scale(1.1); }

.search-icon, .sort-icon { width: 30px; height: 30px; }

.quad-wrapper {
  width: 62.5vw;
  margin: 0 auto;
  padding: 40px 0;
  display: flex;
  justify-content: center;
}
.sidebar.left-ads {
  position: fixed;
  top: 70px;
  left: 0;
  width: 16.302%;
  height: 92vh;
  z-index: 999;
  box-shadow: 0 0 20px rgba(0, 0, 0, 1);
}
.sidebar.right-ads {
  position: fixed;
  top: 70px;
  right: 0;
  width: 16.302%;
  height: 92vh;
  z-index: 999;
  box-shadow: 0 0 20px rgba(0, 0, 0, 1);
}
.ad-link {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
}
.ad-block {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 0;
}
.ad-block img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ad-overlay-text {
  position: absolute;
  top: 30px;
  left: 0;
  width: 100%;
  padding: 0 12px;
  text-align: center;
  color: #fff;
  font-size: 18px;
  line-height: 1.4;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.6);
  box-sizing: border-box;
}
.ad-subtitle {
  position: absolute;
  bottom: 30px;
  left: 0;
  width: 100%;
  padding: 0 12px;
  text-align: center;
  color: #fff;
  font-size: 20px;
  line-height: 1.3;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.6);
  box-sizing: border-box;
}
/* ===== КАТЕГОРІЇ ВПРАВ ===== */
.exercise-card.diff-easy { background-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 70%), url('../images/easy.png'); }
.exercise-card.diff-medium { background-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 70%), url('../images/medium.png'); }
.exercise-card.diff-pro { background-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 70%), url('../images/pro.png'); }
.exercise-card.cat-inshi { background-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 70%), url('../images/bg.png'); }

.exercise-grid {
  width: 62.5vw;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.666vh 0.937vw;
  margin: 40px auto 0;
}
.exercise-card {
  background-color: rgba(20,20,30,0.9);
  background-image: url('../images/bg.png');
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(0,0,0,0.7);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  aspect-ratio: 1 / 1;
  padding: 12px;
  text-align: center;
  transition: 0.25s, background 0.5s;
  color: #fff;
  text-shadow: 
    0 0 8px rgba(0, 0, 0, 1), 
    0 0 4px rgba(0, 0, 0, 1),
    1px 1px 2px rgba(0, 0, 0, 1);
}
.exercise-card:hover {
  transform: translateY(-6px) scale(1.1);
}
.exercise-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
  text-align: center;
  word-break: break-word;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}
.exercise-mini {
  font-size: 14px;
  opacity: 0.95;
  line-height: 1.5;
}

.exercise-mini div { margin: 4px 0; }
.exercise-mini span { display: block; }
.exercise-mini span.label {
  font-weight: bold;
  font-size: 12px;
  margin-bottom: 2px;
  text-transform: uppercase;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}
@media (max-width: 830px) {
  .quad-wrapper {
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    box-sizing: border-box !important;
  }

  .exercise-grid {
    width: 100% !important;
    max-width: 100% !important;
    margin: 15px auto 0 !important;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 14px;
    box-sizing: border-box !important;
  }
  .exercise-card { aspect-ratio: 1 / 1; padding: 10px; }
  .exercise-card h4 { font-size: 14px; }
  .exercise-mini { font-size: 12px; }

  header {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 52px !important;
    padding: 8px 10px !important;
    background-color: rgba(15, 17, 26, 0.95) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 1000 !important;
  }

  .left-side {
    width: 100% !important;
    max-width: 100% !important;
    display: flex !important;
    align-items: center !important;
    gap: 0 !important;
    overflow: hidden !important;
  }

  .nav-buttons {
    display: flex !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    white-space: nowrap !important;
    -webkit-overflow-scrolling: touch !important;
    scrollbar-width: none !important;
    -ms-overflow-style: none !important;
    gap: 8px !important;
    padding: 2px 4px !important;
    box-sizing: border-box !important;
  }

  .nav-buttons::-webkit-scrollbar {
    display: none;
  }

  .nav-button {
    flex: 0 0 auto !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 7px 12px !important;
    border-radius: 9px !important;
    background: rgba(255, 26, 26, 0.08) !important;
    border: 1px solid rgba(255, 26, 26, 0.22) !important;
    font-size: 13px !important;
    color: #fff !important;
    white-space: nowrap !important;
    text-decoration: none !important;
    box-sizing: border-box !important;
    touch-action: manipulation !important;
  }

  .nav-button:hover, .nav-button:active {
    background: rgba(255, 26, 26, 0.22) !important;
    border-color: #ff1a1a !important;
  }

}

/* ===== EXERCISE CARD EXPAND ===== */
.exercise-card.active {
  position: fixed;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%) scale(1.15);
  width: min(420px, 92vw);
  height: auto;
  aspect-ratio: auto;
  z-index: 5000;
  cursor: default;
  animation: exerciseOpen 0.35s ease;
  transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.3, 1);
  background: transparent !important;
  box-shadow: none !important;
  padding: 0 !important;
  border: none !important;
}

@media (min-width: 950px) {
  .exercise-card.active.flyout-open {
    transform: translate(calc(-50% - 205px), -50%) scale(1.15);
  }
}

.exercise-card.closing { animation: exerciseClose 0.3s ease forwards; }
.exercise-card.active .exercise-mini { margin-top: 12px; font-size: 15px; }
.exercise-card.active h4 { font-size: 22px; padding: 0 45px; box-sizing: border-box; }

/* ===== CARD FRONT FACE (MAIN CARD BODY) ===== */
.card-front-face {
  position: relative;
  z-index: 2;
  width: 100%;
  height: auto;
  border-radius: 14px;
  background-color: rgba(20, 20, 30, 0.9);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.85) !important;
  border: none !important;
  outline: none !important;
  padding: 18px 20px 20px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #fff;
  text-shadow: 
    0 0 8px rgba(0, 0, 0, 1), 
    0 0 4px rgba(0, 0, 0, 1),
    1px 1px 2px rgba(0, 0, 0, 1);
}

.card-front-face.diff-easy { background-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 70%), url('../images/easy.png'); }
.card-front-face.diff-medium { background-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 70%), url('../images/medium.png'); }
.card-front-face.diff-pro { background-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 70%), url('../images/pro.png'); }
.card-front-face.cat-inshi { background-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 70%), url('../images/bg.png'); }

/* ===== ICONS INSIDE ACTIVE CARD ===== */
.info-icon-btn {
  position: absolute;
  top: 15px;
  left: 15px;
  cursor: pointer;
  width: 36px;
  height: 36px;
  z-index: 100;
  transition: transform 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.info-icon-btn:hover {
  transform: scale(1.12);
}

.execution-icon-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12) !important;
  border: 1.5px solid #ffffff !important;
  color: #ffffff !important;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.35) !important;
  z-index: 100;
}
.execution-icon-btn svg {
  color: #ffffff !important;
  fill: #ffffff !important;
  filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.5));
  pointer-events: none;
  transition: all 0.25s ease;
}
.execution-icon-btn:hover {
  transform: scale(1.12);
  background: rgba(255, 255, 255, 0.25) !important;
  border-color: #ffffff !important;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.6) !important;
}
.execution-icon-btn.active {
  background: rgba(255, 26, 26, 0.25) !important;
  border: 1.5px solid #ff1a1a !important;
  color: #ff3333 !important;
  box-shadow: 0 0 12px rgba(255, 26, 26, 0.65) !important;
}
.execution-icon-btn.active svg {
  color: #ff3333 !important;
  fill: #ff3333 !important;
  filter: drop-shadow(0 0 6px rgba(255, 26, 26, 0.8));
}
.execution-icon-btn.active:hover {
  transform: scale(1.12);
  background: rgba(255, 26, 26, 0.45) !important;
  border-color: #ff4d4d !important;
  box-shadow: 0 0 16px rgba(255, 26, 26, 0.9) !important;
}

/* ===== EXERCISE EXECUTION TWIN CARD (FLYOUT) ===== */
.exercise-execution-flyout {
  position: absolute;
  top: 0;
  bottom: 0;
  height: 100%;
  box-sizing: border-box;
  background-color: rgba(20, 20, 30, 0.9);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  border-radius: 14px;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.85) !important;
  border: none !important;
  outline: none !important;
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  color: #fff;
  text-shadow: 
    0 0 8px rgba(0, 0, 0, 1), 
    0 0 4px rgba(0, 0, 0, 1),
    1px 1px 2px rgba(0, 0, 0, 1);
  z-index: 1;
  cursor: default;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.3, 1), opacity 0.35s ease;
}

@media (min-width: 950px) {
  .exercise-execution-flyout {
    width: 340px;
    left: calc(100% + 16px);
    transform: translateX(calc(-100% - 16px));
  }
  .exercise-execution-flyout.active {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 949px) {
  .exercise-execution-flyout {
    left: 0;
    right: 0;
    width: 100%;
    z-index: 10;
    transform: translateY(30px);
    transition: transform 0.35s cubic-bezier(0.2, 0.9, 0.3, 1), opacity 0.3s ease;
  }
  .exercise-execution-flyout.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
}

.flyout-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  margin-bottom: 14px;
  flex-shrink: 0;
}

.flyout-header h4 {
  font-size: 20px;
  margin: 0;
  padding: 0;
  text-align: center;
  color: #fff;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8), 0 0 10px rgba(255, 40, 40, 0.35);
  word-break: break-word;
}

.flyout-body.flyout-full-text {
  flex: 1;
  overflow-y: auto;
  padding-right: 6px;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 26, 26, 0.5) rgba(0, 0, 0, 0.3);
}

.flyout-body.flyout-full-text::-webkit-scrollbar {
  width: 5px;
}

.flyout-body.flyout-full-text::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
}

.flyout-body.flyout-full-text::-webkit-scrollbar-thumb {
  background: rgba(255, 26, 26, 0.5);
  border-radius: 10px;
}

.flyout-body.flyout-full-text::-webkit-scrollbar-thumb:hover {
  background: #ff1a1a;
}

.instruction-single-text {
  font-size: 14.5px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.95);
  text-align: left;
  margin: 0;
  text-shadow: 0 0 6px rgba(0, 0, 0, 1), 1px 1px 2px rgba(0, 0, 0, 0.9);
}

.instruction-single-text strong {
  color: #ff4d4d;
  text-shadow: 0 0 8px rgba(255, 77, 77, 0.5);
}

.exercise-mini.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 20px;
  margin-top: 12px;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.exercise-mini.two-columns .label { font-weight: bold; }

@keyframes exerciseClose {
  from { transform: translate(-50%, -50%) scale(1.15); opacity: 1; }
  to { transform: translate(-50%, -50%) scale(0.6); opacity: 0; }
}

@keyframes exerciseOpen {
  from { transform: translate(-50%, -50%) scale(0.6); opacity: 0; }
  to { transform: translate(-50%, -50%) scale(1.15); opacity: 1; }
}

.exercise-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 4000;
}

/* ===== МОДАЛЬНЕ ВІКНО ПОШУКУ ТА СОРТУВАННЯ ===== */
.exercise-overlay.search-active, .exercise-overlay.sort-active {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 6000;
  justify-content: center;
  align-items: center;
  transition: background-image 0.4s ease;
}

.exercise-overlay.search-active[style*="flex"] { display: flex !important; }

.search-modal-container, .sort-modal-container {
  background-color: rgba(20,20,30,0.95);
  border-radius: 16px;
  width: min(560px, 92vw);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  color: #fff;
  box-shadow: 0 0 40px rgba(0,0,0,0.8), 0 0 0 1px rgba(80,80,100,0.1);
  overflow: hidden;
  background-image: linear-gradient(to top, rgba(20,20,30,0.95) 0%, rgba(20,20,30,0.8) 100%), url('../images/bg.png');
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  transition: background-image 0.4s ease;
}

.sort-modal-container { width: min(380px, 92vw); }

.search-modal-container.diff-easy, .sort-modal-container.diff-easy { background-image: linear-gradient(to top, rgba(20,20,30,0.95) 0%, rgba(20,20,30,0.8) 100%), url('../images/easy.png'); }
.search-modal-container.diff-medium, .sort-modal-container.diff-medium { background-image: linear-gradient(to top, rgba(20,20,30,0.95) 0%, rgba(20,20,30,0.8) 100%), url('../images/medium.png'); }
.search-modal-container.diff-pro, .sort-modal-container.diff-pro { background-image: linear-gradient(to top, rgba(20,20,30,0.95) 0%, rgba(20,20,30,0.8) 100%), url('../images/pro.png'); }
.search-modal-container.cat-inshi, .sort-modal-container.cat-inshi { background-image: linear-gradient(to top, rgba(20,20,30,0.95) 0%, rgba(20,20,30,0.8) 100%), url('../images/bg.png'); }

.search-fixed-top {
  display: flex;
  gap: 10px;
  padding: 20px 20px 15px;
  border-bottom: 1px solid rgba(80,80,100,0.2);
  background: rgba(20,20,30,0.98);
  flex-shrink: 0;
}

.search-fixed-top input[type="text"] {
  flex: 1;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid rgba(80,80,100,0.5);
  background-color: #20202a;
  color: #fff;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-fixed-top input[type="text"]:focus {
  border-color: #4a4a5a;
  box-shadow: 0 0 0 3px rgba(80,80,100,0.15);
}

.search-fixed-top input[type="text"]::placeholder { color: #888; }
.search-fixed-top button {
  padding: 10px 18px;
  border-radius: 10px;
  border: none;
  background-color: #ff1a1a;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  white-space: nowrap;
}
.search-fixed-top button:hover {
  background-color: #ff3333;
  transform: translateY(-1px);
}
.search-fixed-top button:active { transform: translateY(0); }

#f-close-x {
  background: #444 !important;
  padding: 10px 14px !important;
  font-size: 16px !important;
}
#f-close-x:hover { background: #555 !important; }

.search-scrollable-content {
  overflow-y: auto;
  padding: 20px;
  flex: 1;
}

.search-scrollable-content::-webkit-scrollbar { width: 6px; }
.search-scrollable-content::-webkit-scrollbar-track { background: transparent; }
.search-scrollable-content::-webkit-scrollbar-thumb {
  background: rgba(80,80,100,0.3);
  border-radius: 3px;
}

.filter-grid-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.sort-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.05);
  padding: 10px 15px;
  border-radius: 10px;
  margin-bottom: 8px;
}

.sort-item label { font-size: 14px; color: #fff; flex: 1; }
.sort-options { display: flex; gap: 5px; }

.sort-opt {
  padding: 5px 10px;
  border-radius: 5px;
  border: 1px solid rgba(255,26,26,0.3);
  background: rgba(0,0,0,0.3);
  color: #888;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.sort-opt.active {
  background: #ff1a1a;
  color: #fff;
  border-color: #ff1a1a;
  box-shadow: 0 0 10px rgba(255,26,26,0.4);
}

.filter-item { display: flex; flex-direction: column; gap: 6px; }
.filter-item.full-width { grid-column: 1 / -1; }

.filter-row-triple {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  grid-column: 1 / -1;
}
.filter-item label {
  font-size: 13px;
  font-weight: 600;
  color: #ccc;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.filter-item select {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(80,80,100,0.4);
  background-color: #20202a;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

.filter-item select:focus { border-color: #4a4a5a; }
.filter-item select option { background-color: #20202a; color: #fff; }

.range-row { display: flex; gap: 8px; }

.range-row input[type="number"] {
  width: 50%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(80,80,100,0.4);
  background-color: #20202a;
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.range-row input[type="number"]:focus { border-color: #4a4a5a; }
.range-row input[type="number"]::placeholder { color: #666; }

/* ===== MULTI-SELECT CHECKBOXES ===== */
.checkbox-group-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    background: rgba(255,255,255,0.02);
    padding: 12px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.05);
}
.group-title {
    font-size: 0.85em;
    color: #888;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 3px;
}
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 6px;
}
.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8em;
    cursor: pointer;
    user-select: none;
    padding: 3px 6px;
    border-radius: 4px;
    color: #bbb;
    transition: background 0.2s;
}
.checkbox-item:hover {
    background: rgba(255,255,255,0.05);
    color: #fff;
}
.checkbox-item input {
    accent-color: #555;
    width: 14px;
    height: 14px;
    cursor: pointer;
}

/* ===== COLLAPSIBLE SELECTS ===== */
.collapsible-select {
    margin-bottom: 12px;
}
.collapsible-select summary {
    background: #20202a;
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: normal;
    font-size: 14px;
    color: #fff;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid rgba(80,80,100,0.4);
    transition: border-color 0.2s;
}
.collapsible-select summary::after {
    content: "▼";
    font-size: 0.7em;
    color: #666;
    transition: 0.3s;
}
.collapsible-select[open] summary::after {
    transform: rotate(180deg);
}
.collapsible-select summary:hover {
    border-color: rgba(100,100,120,0.6);
}
.collapsible-content {
    margin-top: 5px;
    background: rgba(15,15,20,0.6);
    padding: 12px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.03);
}

#reset-top-container { width: 100%; text-align: center; margin-bottom: 20px; }

#f-reset-top {
  cursor: pointer;
  padding: 10px 25px;
  border-radius: 30px;
  border: 1px solid #ff1a1a;
  background: rgba(255,26,26,0.15);
  color: #fff;
  font-weight: bold;
  backdrop-filter: blur(5px);
  transition: all 0.3s;
  font-size: 14px;
}
#f-reset-top:hover {
  background: rgba(255,26,26,0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255,26,26,0.2);
}

#load-more-btn {
  width: 100%;
  padding: 15px;
  margin-top: 25px;
  border-radius: 25px;
  background: #1e1e1e;
  color: #fff;
  cursor: pointer;
  border: 1px solid #555;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s;
}
#load-more-btn:hover {
  background: #2a2a2a;
  border-color: #ff1a1a;
}

@media (max-width: 830px) {
  html, body { width: 100%; max-width: 100%; overflow-x: hidden; }
  body {
    display: block !important;
    text-align: left !important;
    padding: 0 !important;
    padding-bottom: 85px !important;
    margin: 0 !important;
    box-sizing: border-box !important;
  }

  .main-wrapper {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 16px 12px !important;
    margin: 0 !important;
    box-sizing: border-box !important;
    gap: 16px !important;
  }

  /* ===== Реклама - приховано на мобільних пристроях ===== */
  .sidebar.left-ads,
  .sidebar.right-ads {
    display: none !important;
  }

  .center-copy,
  .language-select,
  .site-logo {
    display: none !important;
  }
  .search-modal-container { width: 95vw; max-height: 85vh; border-radius: 12px; }
  .filter-grid-layout { grid-template-columns: 1fr; gap: 12px; }
  .filter-row-triple { grid-template-columns: 1fr; gap: 10px; }
  .search-fixed-top { padding: 15px; flex-wrap: wrap; }
  .search-fixed-top input[type="text"] { width: 100%; margin-bottom: 8px; }
  .range-row input[type="number"] { width: 48%; }
}

.bottom-panel {
  display: none;
  width: 100%; max-width: 100%;
  min-height: 60px;
  background-color: rgba(20,20,30,0.95);
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: 1000;
  padding: 0;
  color: #fff;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.5);
  font-size: clamp(12px,3vw,16px);
  justify-content: center;
  align-items: center;
  gap: 0;
}
.bottom-panel .panel-content {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0;
  gap: 0;
}

.bottom-panel .panel-content .center-copy,

.bottom-panel .panel-content .language-select { display: flex; align-items: center; color: #fff; gap: 0; }
.bottom-panel .language-select select {
  background-color: rgba(30,30,40,0.9);
  border: 1px solid #ff1a1a;
  color: #fff;
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.bottom-panel .language-select select:hover { background-color: rgba(50,50,60,0.95); }
.bottom-panel .language-select select:focus { outline: none; }
.bottom-panel .language-select select option { background-color: #20202a; color: #fff; }

@media (max-width: 1000px) {
    .bottom-panel { display: flex; justify-content: center; align-items: center; padding: 0; gap: 0; }
}
/* ===== EXERCISE MODAL MINI INFO ===== */
.exercise-mini {
    margin-bottom: 8px;
    font-size: 14px;
}
.exercise-mini.two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}
.exercise-mini.one-column {
    display: block;
    width: 100%;
}
.exercise-mini .label {
    font-weight: bold;
    color: #fff;
    margin-right: 5px;
}


.exercise-mini div {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}