* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --kvibe-surface: #191b24;
  --kvibe-grid-dot: rgba(50, 52, 62, 0.45);
  --kvibe-accent: #bdf077;
  --kvibe-purple: #9a56c0;
  --kvibe-blue: #339af0;
  --kvibe-pink: #f06595;
  --kvibe-orange: #ff922b;
  --kvibe-green: #51cf66;
  --kvibe-red: #ff6b6b;
  --slide-transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'SN Pro', system-ui, -apple-system, sans-serif;
  color: #e8eaf0;
  background-color: var(--kvibe-surface);
  background-image: radial-gradient(
    var(--kvibe-grid-dot) 1px,
    var(--kvibe-surface) 1px
  );
  background-size: 20px 20px;
  overflow: hidden;
}

.presentation {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Прогресс-бар */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  z-index: 100;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--kvibe-accent), var(--kvibe-purple));
  transition: width var(--slide-transition);
  width: 5%;
}

/* Счётчик слайдов */
.slide-counter {
  position: fixed;
  top: 16px;
  right: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  z-index: 100;
}

/* Кнопки навигации */
.nav-btn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 24px;
  cursor: pointer;
  z-index: 100;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-50%) scale(1.1);
}

.nav-btn:active {
  transform: translateY(-50%) scale(0.95);
}

.nav-btn--prev {
  left: 20px;
}

.nav-btn--next {
  right: 20px;
}

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

/* Подсказка клавиатуры */
.keyboard-hint {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.3);
  z-index: 100;
}

.keyboard-hint span {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  margin: 0 2px;
}

/* Контейнер слайдов */
.slides-container {
  position: relative;
  width: 100%;
  height: 100%;
}

/* Слайд */
.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 80px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(50px);
  transition: all var(--slide-transition);
}

.slide.active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.slide.prev {
  transform: translateX(-50px);
}

.slide-content {
  max-width: 900px;
  width: 100%;
  text-align: center;
}

/* Слайд с градиентом */
.slide--gradient {
  background: linear-gradient(135deg, rgba(154, 86, 192, 0.1) 0%, rgba(51, 154, 240, 0.1) 100%);
}

.slide--final {
  background: linear-gradient(135deg, rgba(189, 240, 119, 0.1) 0%, rgba(154, 86, 192, 0.1) 100%);
}

/* Титульный слайд */
.slide--title .slide-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.emoji-big {
  font-size: 80px;
  margin-bottom: 20px;
  animation: bounce 2s ease-in-out infinite;
}

.emoji-big-small {
  font-size: 50px;
  margin-top: 25px;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.main-title {
  font-size: 72px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--kvibe-accent), var(--kvibe-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 28px;
  font-weight: 400;
  color: #b8b8c8;
  margin-bottom: 30px;
}

.decorative-line {
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--kvibe-accent), var(--kvibe-purple));
  border-radius: 2px;
  margin-bottom: 20px;
}

.hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.4);
}

/* Заголовок слайда */
.slide-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
}

.slide-header .emoji {
  font-size: 40px;
}

.slide-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
}

/* Список целей */
.goals-list {
  list-style: none;
  text-align: left;
  display: inline-block;
}

.goal-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 25px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  font-size: 18px;
  opacity: 0;
  transform: translateX(-20px);
  animation: slideIn 0.5s ease forwards;
  animation-delay: var(--delay);
}

.slide.active .goal-item {
  opacity: 1;
  transform: translateX(0);
}

@keyframes slideIn {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.goal-icon {
  font-size: 24px;
}

/* Карточки квиза */
.quiz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.quiz-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 25px;
  text-align: center;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.quiz-card--wide {
  grid-column: 1 / -1;
}

.quiz-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--kvibe-accent);
  transform: translateY(-5px);
}

.quiz-icon {
  font-size: 40px;
  margin-bottom: 15px;
}

.quiz-card p {
  font-size: 16px;
  color: #b8b8c8;
}

/* Блок определения */
.definition-box {
  background: rgba(51, 154, 240, 0.1);
  border-radius: 16px;
  padding: 30px;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 20px;
  text-align: left;
}

.definition-icon {
  font-size: 48px;
}

.definition-text {
  font-size: 20px;
  line-height: 1.5;
}

/* Сравнение */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 25px;
}

.compare-card {
  border-radius: 16px;
  padding: 25px;
  text-align: center;
}

.compare-card--bad {
  background: rgba(255, 107, 107, 0.1);
  border: 2px solid rgba(255, 107, 107, 0.3);
}

.compare-card--good {
  background: rgba(81, 207, 102, 0.1);
  border: 2px solid rgba(81, 207, 102, 0.3);
}

.compare-label {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.compare-card p {
  font-size: 14px;
  color: #b8b8c8;
}

/* Тема проекта */
.project-theme {
  margin-bottom: 25px;
}

.theme-label {
  font-size: 16px;
  color: var(--kvibe-accent);
  margin-bottom: 10px;
  font-family: 'JetBrains Mono', monospace;
}

.theme-title {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--kvibe-accent), var(--kvibe-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.idea-box {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 20px 25px;
  font-size: 16px;
  color: #b8b8c8;
  text-align: left;
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.idea-icon {
  font-size: 28px;
}

/* Шаги */
.steps-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}

.step-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 25px 30px;
  text-align: center;
  min-width: 160px;
}

.step-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 24px;
  font-weight: 600;
  color: var(--kvibe-accent);
  margin-bottom: 10px;
}

.step-icon {
  font-size: 40px;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 14px;
  color: #b8b8c8;
}

.step-arrow {
  font-size: 28px;
  color: var(--kvibe-accent);
}

/* Структура презентации */
.structure-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}

.structure-block {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 30px;
  text-align: center;
  min-width: 180px;
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.structure-block--start {
  border-color: rgba(189, 240, 119, 0.4);
}

.structure-block--middle {
  border-color: rgba(51, 154, 240, 0.4);
}

.structure-block--end {
  border-color: rgba(154, 86, 192, 0.4);
}

.structure-icon {
  font-size: 48px;
  margin-bottom: 10px;
}

.structure-label {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 5px;
}

.structure-desc {
  font-size: 14px;
  color: #b8b8c8;
}

.structure-arrow {
  font-size: 28px;
  color: var(--kvibe-accent);
}

/* Превью слайда */
.slide-preview {
  margin-bottom: 25px;
}

.slide-preview--small {
  display: inline-block;
  width: 280px;
  vertical-align: top;
  margin: 0 10px;
}

.preview-slide {
  background: #fff;
  border-radius: 12px;
  padding: 40px;
  max-width: 500px;
  margin: 0 auto;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  text-align: left;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.preview-slide--title {
  text-align: center;
  justify-content: center;
  align-items: center;
}

.preview-slide--green {
  border-top: 4px solid var(--kvibe-green);
}

.preview-slide--purple {
  border-top: 4px solid var(--kvibe-purple);
}

.preview-slide--final {
  text-align: center;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #191b24, #2a2d38);
  color: #fff;
}

.preview-slide--final-alt {
  text-align: center;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #2d1b4e, #1b3a5c);
  color: #fff;
}

.preview-slide--bad {
  border: 2px solid var(--kvibe-red);
  padding: 25px;
}

.preview-slide--good {
  border: 2px solid var(--kvibe-green);
  padding: 25px;
}

.preview-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--kvibe-blue);
  margin-bottom: 15px;
}

.preview-title-big {
  font-size: 28px;
  font-weight: 700;
}

.preview-author {
  font-size: 14px;
  color: #666;
}

.preview-heading {
  font-size: 20px;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 15px;
}

.preview-heading-small {
  font-size: 16px;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 10px;
}

.preview-list {
  list-style: none;
  padding: 0;
}

.preview-list li {
  font-size: 14px;
  color: #444;
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.preview-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--kvibe-blue);
}

.preview-text-tiny {
  font-size: 10px;
  color: #666;
  line-height: 1.4;
}

.preview-checklist {
  font-size: 13px;
  color: #333;
}

.preview-checklist div {
  padding: 4px 0;
}

.preview-img-placeholder {
  font-size: 32px;
  text-align: center;
  margin-top: 10px;
}

.preview-subtitle {
  font-size: 32px;
  margin-top: 10px;
}

/* Подсказки и предупреждения */
.tip-box {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(189, 240, 119, 0.15);
  border-left: 4px solid var(--kvibe-accent);
  padding: 15px 20px;
  border-radius: 0 12px 12px 0;
  font-size: 16px;
}

.tip-icon {
  font-size: 20px;
}

.highlight-box {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(51, 154, 240, 0.15);
  border-left: 4px solid var(--kvibe-blue);
  padding: 15px 20px;
  border-radius: 0 12px 12px 0;
  font-size: 18px;
  margin-top: 20px;
}

.use-case-box {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.05);
  padding: 15px 25px;
  border-radius: 12px;
  font-size: 16px;
  margin-top: 20px;
}

.use-icon {
  font-size: 20px;
}

/* Описание */
.description {
  font-size: 20px;
  color: #b8b8c8;
  margin-bottom: 25px;
}

/* Карточки макетов */
.layout-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
  margin-bottom: 25px;
}

.layout-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 15px;
  text-align: center;
  transition: all 0.3s ease;
}

.layout-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

.layout-card span {
  display: block;
  font-size: 12px;
  color: #b8b8c8;
  margin-top: 10px;
}

.layout-preview {
  background: #fff;
  border-radius: 6px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.layout-lines {
  width: 70%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.line {
  height: 6px;
  background: #ddd;
  border-radius: 3px;
}

.line--big {
  width: 80%;
  height: 10px;
}

.line--small {
  width: 60%;
}

.line--empty {
  background: none;
  border: 1px dashed #ccc;
  height: 40px;
  width: 80%;
}

/* Тул текстовых инструментов */
.text-tools-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-bottom: 25px;
}

.tool-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 20px 25px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-width: 100px;
  transition: all 0.3s ease;
}

.tool-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

.tool-emoji {
  font-size: 28px;
}

.tool-card span:last-child {
  font-size: 14px;
  color: #b8b8c8;
}

/* Демо перетаскивания */
.drag-demo {
  margin-bottom: 25px;
}

.drag-slide {
  background: #fff;
  border-radius: 12px;
  padding: 30px;
  max-width: 500px;
  margin: 0 auto;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  position: relative;
  min-height: 250px;
}

.drag-box {
  position: absolute;
  border: 2px dashed var(--kvibe-blue);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(51, 154, 240, 0.05);
  cursor: move;
  transition: all 0.3s ease;
}

.drag-box:hover {
  border-color: var(--kvibe-accent);
  background: rgba(189, 240, 119, 0.05);
}

.drag-box--title {
  top: 30px;
  left: 40px;
  right: 40px;
  height: 50px;
  font-size: 16px;
  font-weight: 700;
  color: #333;
}

.drag-box--text {
  top: 100px;
  left: 40px;
  right: 40px;
  height: 120px;
  font-size: 12px;
  color: #666;
}

.drag-hints {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.tip-box--small {
  font-size: 14px;
  padding: 12px 18px;
}

/* Варианты дизайна */
.design-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.design-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 30px;
  text-align: center;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.design-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--kvibe-purple);
  transform: translateY(-5px);
}

.design-icon {
  font-size: 48px;
  margin-bottom: 15px;
}

.design-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.design-card p {
  font-size: 14px;
  color: #b8b8c8;
}

/* Типы фона */
.bg-examples {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 25px;
}

.bg-card {
  text-align: center;
}

.bg-preview {
  width: 100%;
  height: 120px;
  border-radius: 12px;
  margin-bottom: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.bg-preview--solid {
  background: linear-gradient(135deg, #2d1b4e, #1b3a5c);
}

.bg-preview--gradient {
  background: linear-gradient(135deg, var(--kvibe-purple), var(--kvibe-blue), var(--kvibe-green));
}

.bg-preview--texture {
  background: repeating-linear-gradient(45deg, #2a2d38, #2a2d38 10px, #353840 10px, #353840 20px);
}

.bg-label {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.bg-desc {
  display: block;
  font-size: 13px;
  color: #b8b8c8;
}

/* Демо вставки */
.insert-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}

.insert-step {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 25px;
  text-align: center;
  min-width: 150px;
}

.insert-step-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 20px;
  font-weight: 600;
  color: var(--kvibe-accent);
  margin-bottom: 10px;
}

.insert-icon {
  font-size: 36px;
  margin-bottom: 10px;
}

.insert-step p {
  font-size: 14px;
  color: #b8b8c8;
}

.insert-arrow {
  font-size: 24px;
  color: var(--kvibe-accent);
}

.tips-row {
  display: flex;
  justify-content: center;
  gap: 20px;
}

/* Правила красоты */
.rules-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.rule-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 30px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  animation: slideIn 0.5s ease forwards;
  animation-delay: var(--delay);
}

.slide.active .rule-card {
  opacity: 1;
}

.rule-check {
  font-size: 36px;
}

.rule-card p {
  font-size: 18px;
  color: #b8b8c8;
}

/* Сравнение хороший/плохой слайд */
.compare-slides {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}

.compare-side {
  text-align: center;
}

.compare-label {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 15px;
}

.compare-label--bad {
  color: var(--kvibe-red);
}

.compare-label--good {
  color: var(--kvibe-green);
}

/* Тутббар демо */
.toolbar-demo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-top: 25px;
}

.toolbar-btn {
  background: rgba(255, 255, 255, 0.1);
  padding: 12px 25px;
  border-radius: 8px;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}

.toolbar-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.toolbar-hint {
  font-size: 14px;
  color: #888;
}

/* Кнопки F5 и прочие */
.play-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.play-step {
  text-align: center;
}

.play-key {
  background: rgba(255, 255, 255, 0.1);
  padding: 20px 30px;
  border-radius: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 20px;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 10px;
  min-width: 100px;
}

.play-key--red {
  background: rgba(255, 107, 107, 0.2);
  border: 2px solid var(--kvibe-red);
}

.play-step p {
  font-size: 14px;
  color: #b8b8c8;
}

/* ДЗ */
.homework-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 30px;
}

.homework-item {
  display: flex;
  align-items: center;
  gap: 15px;
  background: rgba(255, 255, 255, 0.05);
  padding: 15px 25px;
  border-radius: 12px;
  font-size: 18px;
  text-align: left;
  opacity: 0;
  animation: slideIn 0.5s ease forwards;
  animation-delay: var(--delay);
}

.slide.active .homework-item {
  opacity: 1;
  transform: translateX(0);
}

.hw-num {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--kvibe-accent);
  min-width: 30px;
}

.final-emoji {
  font-size: 80px;
  margin: 30px 0 10px;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.final-text {
  font-size: 32px;
  font-weight: 700;
  color: var(--kvibe-accent);
}

/* Доп задание */
.bonus-slides {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 25px;
}

.bonus-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 25px;
  text-align: left;
}

.bonus-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--kvibe-accent);
  margin-bottom: 10px;
}

.bonus-text {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.bonus-hint {
  font-size: 14px;
  color: #b8b8c8;
}

/* Адаптивность */
@media (max-width: 768px) {
  .slide {
    padding: 60px 20px;
  }

  .slide-header h2 {
    font-size: 24px;
  }

  .main-title {
    font-size: 48px;
  }

  .subtitle {
    font-size: 20px;
  }

  .quiz-grid {
    grid-template-columns: 1fr;
  }

  .steps-visual {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
  }

  .structure-visual {
    flex-direction: column;
  }

  .structure-arrow {
    transform: rotate(90deg);
  }

  .compare-grid {
    grid-template-columns: 1fr;
  }

  .compare-slides {
    grid-template-columns: 1fr;
  }

  .design-options {
    grid-template-columns: 1fr;
  }

  .bg-examples {
    grid-template-columns: 1fr;
  }

  .layout-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .rules-grid {
    grid-template-columns: 1fr;
  }

  .bonus-slides {
    grid-template-columns: 1fr;
  }

  .tips-row {
    flex-direction: column;
  }

  .nav-btn {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .nav-btn--prev {
    left: 10px;
  }

  .nav-btn--next {
    right: 10px;
  }

  .slide-preview--small {
    width: 100%;
    display: block;
    margin-bottom: 15px;
  }

  .play-steps {
    flex-direction: column;
    align-items: center;
  }
}