.km-main {
  max-width: var(--max-width-container, 1280px);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

@media (max-width: 640px) {
  .km-main {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
}

/* ============================================
   HERO + CAROUSEL
   ============================================ */
.km-hero-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.km-hero-title {
  font-family: var(--font-family);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-on-surface);
  margin: 0;
  line-height: 1.15;
}

@media (max-width: 640px) {
  .km-hero-title {
    font-size: 22px;
  }
}

.km-hero-subtitle {
  font-size: 14px;
  color: var(--color-gray-500);
  margin: 4px 0 0;
}

.km-carousel-nav {
  display: none;
  gap: 6px;
}

@media (min-width: 768px) {
  .km-carousel-nav {
    display: flex;
  }
}

.km-carousel-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--color-outline-variant);
  background: var(--color-surface-container-lowest);
  color: var(--color-on-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

.km-carousel-btn:hover {
  background: var(--color-surface-container);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.km-carousel-btn .material-symbols-outlined {
  font-size: 20px;
}

/* Carousel track */
.km-carousel {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  gap: var(--space-4);
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  margin-top: 20px;
}

.km-carousel::-webkit-scrollbar {
  display: none;
}

.km-carousel {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Carousel slide */
.km-slide {
  flex: 0 0 85%;
  scroll-snap-align: center;
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  aspect-ratio: 16 / 8;
  cursor: pointer;
}

@media (min-width: 768px) {
  .km-slide {
    flex: 0 0 55%;
  }
}

@media (min-width: 1024px) {
  .km-slide {
    flex: 0 0 45%;
  }
}

.km-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.km-slide:hover img {
  transform: scale(1.06);
}

.km-slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 25%, rgba(0, 0, 0, 0.72) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-6);
}

.km-slide-tag {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  width: fit-content;
  margin-bottom: var(--space-3);
}

.km-slide-title {
  font-family: var(--font-family);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-white);
  margin: 0 0 var(--space-2);
  line-height: 1.2;
}

@media (max-width: 640px) {
  .km-slide-title {
    font-size: 16px;
  }
}

.km-slide-author {
  display: flex;
  align-items: center;
  gap: 8px;
}

.km-slide-author img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  object-fit: cover;
}

.km-slide-author span {
  font-size: 12px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.85);
}

/* Carousel dots */
.km-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding-top: var(--space-3);
}

.km-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-outline-variant);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all var(--transition-base);
}

.km-dot.active {
  width: 24px;
  border-radius: 4px;
  background: var(--color-primary);
}

/* ============================================
   CONTENT GRID: sidebar (left) + feed (right)
   ============================================ */
.km-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-top: 20px;
}

@media (min-width: 1024px) {
  .km-grid {
    grid-template-columns: 280px 1fr;
  }
}

/* Sidebar */
.km-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (max-width: 1023px) {
  .km-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }
}

@media (max-width: 640px) {
  .km-sidebar {
    grid-template-columns: 1fr;
  }
}

/* CTA card */
.km-cta {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

.km-cta::after {
  content: '';
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 120px;
  height: 120px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  filter: blur(40px);
}

.km-cta h3 {
  font-family: var(--font-family);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-2);
  position: relative;
}

.km-cta p {
  font-size: 12px;
  line-height: 1.5;
  opacity: 0.85;
  margin: 0 0 var(--space-5);
  position: relative;
}

.km-cta-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 12px 16px;
  background: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.km-cta-btn:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.km-cta-btn .material-symbols-outlined {
  font-size: 18px;
}

/* Trending card */
.km-card {
  background: var(--color-surface-container-lowest);
  /* border: 1px solid var(--color-surface-container-high); */
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  /* box-shadow: var(--shadow-sm); */
}

.km-card-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-outline);
  margin: 0 0 var(--space-4);
}

.km-trending {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.km-trend-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  cursor: pointer;
  transition: color var(--transition-base);
}

.km-trend-row:hover {
  color: var(--color-primary);
}

.km-trend-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.km-trend-hash {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-lg);
  background: var(--color-gray-100);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  flex-shrink: 0;
}

.km-trend-name {
  font-size: 13px;
  font-weight: 700;
}

.km-trend-count {
  font-size: 11px;
  color: var(--color-outline);
  white-space: nowrap;
}

/* ============================================
   FEED
   ============================================ */
.km-feed {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* Filter pills */
.km-filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.km-filters::-webkit-scrollbar {
  display: none;
}

.km-filters {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.km-filter {
  flex-shrink: 0;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: none;
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--color-surface-container);
  color: var(--color-on-surface-variant);
}

.km-filter.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.km-filter:not(.active):hover {
  background: var(--color-surface-variant);
}

/* Feed grid */
.km-feed-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .km-feed-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .km-feed-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tip card */
.km-tip {
  background: var(--color-surface-container-lowest);
  /* border: 1px solid var(--color-surface-container-high); */
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  /* box-shadow: var(--shadow-sm); */
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.km-tip:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.km-tip-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.km-tip-tag {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.km-tip-tag.green {
  background: color-mix(in srgb, var(--color-secondary-container) 40%, transparent);
  color: var(--color-on-secondary-container);
}

.km-tip-tag.red {
  background: color-mix(in srgb, var(--color-tertiary-fixed) 40%, transparent);
  color: var(--color-on-tertiary-fixed-variant);
}

.km-tip-tag.blue {
  background: color-mix(in srgb, var(--color-primary-fixed) 40%, transparent);
  color: var(--color-on-primary-fixed-variant);
}

.km-tip-bookmark {
  background: none;
  border: none;
  color: var(--color-outline);
  cursor: pointer;
  padding: 0;
  transition: color var(--transition-base);
}

.km-tip-bookmark:hover {
  color: var(--color-primary);
}

.km-tip-bookmark .material-symbols-outlined {
  font-size: 20px;
}

.km-tip-title {
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--color-on-surface);
  margin: 0 0 var(--space-2);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.km-tip-desc {
  font-size: 12px;
  color: var(--color-on-surface-variant);
  line-height: 1.55;
  margin: 0 0 var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.km-tip-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-surface-container-high);
}

.km-tip-author {
  display: flex;
  align-items: center;
  gap: 8px;
}

.km-tip-author img {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
}

.km-tip-author-name {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-on-surface);
}

.km-tip-author-time {
  font-size: 10px;
  color: var(--color-outline);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.km-tip-likes {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--color-on-surface-variant);
}

.km-tip-likes .material-symbols-outlined {
  font-size: 16px;
}

.km-tip-likes.liked {
  color: var(--color-tertiary);
}

.km-tip-likes.liked .material-symbols-outlined {
  font-variation-settings: 'FILL' 1;
}

/* Load more */
.km-load-more {
  display: flex;
  justify-content: center;
  padding-top: var(--space-4);
}

.km-load-more-btn {
  padding: 10px 32px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
}

.km-load-more-btn:hover {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

/* ============================================
   FAB (Floating Action Button)
   ============================================ */
.km-fab {
  position: fixed;
  bottom: 96px;
  right: 24px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  transition: all var(--transition-base);
  z-index: 40;
}

.km-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.km-fab .material-symbols-outlined {
  font-size: 26px;
}

@media (min-width: 768px) {
  .km-fab {
    bottom: 100px;
    right: 32px;
  }
}

/* ============================================
   CREATE TOPIC MODAL
   ============================================ */
.km-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

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

.km-modal {
  background: var(--color-surface-container-lowest);
  border-radius: var(--radius-2xl);
  max-width: 520px;
  width: 100%;
  padding: var(--space-6);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
  transform: scale(0.92) translateY(16px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.km-modal-overlay.active .km-modal {
  transform: scale(1) translateY(0);
}

.km-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.km-modal-title {
  font-family: var(--font-family);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-on-surface);
  margin: 0;
}

.km-modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--color-surface-container);
  color: var(--color-on-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

.km-modal-close:hover {
  background: var(--color-surface-container-high);
  color: var(--color-on-surface);
}

.km-modal-close .material-symbols-outlined {
  font-size: 18px;
}

.km-modal-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.km-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.km-form-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-on-surface-variant);
  letter-spacing: 0.02em;
}

.km-form-input,
.km-form-select,
.km-form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 0.5px solid var(--color-outline-variant);
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: 13px;
  color: var(--color-on-surface);
  background: var(--color-gray-50);
  outline: none;
  transition: border-color var(--transition-base);
  box-sizing: border-box;
}

.km-form-input:focus,
.km-form-select:focus,
.km-form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.km-form-textarea {
  min-height: 120px;
  resize: vertical;
}

.km-form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24'%3E%3Cpath fill='%23777' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.km-modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  padding-top: var(--space-3);
}

.km-modal-submit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
}

.km-modal-submit:hover {
  background: var(--color-primary-container);
  transform: translateY(-1px);
}

.km-modal-submit .material-symbols-outlined {
  font-size: 16px;
}

.km-modal-cancel {
  padding: 10px 20px;
  background: transparent;
  color: var(--color-on-surface-variant);
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.km-modal-cancel:hover {
  background: var(--color-surface-container-low);
  color: var(--color-on-surface);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet: 768px - 1023px */
@media (min-width: 768px) and (max-width: 1023px) {
  .km-main {
    padding: var(--space-8) var(--space-5);
  }

  .km-hero-title {
    font-size: 26px;
  }

  .km-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  /* Sidebar becomes 2-column row */
  .km-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }

  .km-slide {
    flex: 0 0 60%;
  }

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

  /* Move sidebar below hero but before feed */
  .km-grid {
    display: flex;
    flex-direction: column;
  }
}

/* Mobile: 480px - 767px */
@media (max-width: 767px) {
  .km-main {
    padding: var(--space-6) var(--space-4);
    gap: var(--space-4);
  }

  .km-hero-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .km-carousel-nav {
    display: flex; /* Show nav buttons on mobile too */
    align-self: flex-end;
    margin-top: -8px;
  }

  .km-hero-title {
    font-size: 20px;
  }

  .km-slide {
    flex: 0 0 88%;
  }

  .km-slide-overlay {
    padding: var(--space-4);
  }

  .km-sidebar {
    grid-template-columns: 1fr;
  }

  .km-cta {
    padding: var(--space-5);
  }

  .km-card {
    padding: var(--space-4);
  }

  .km-feed-grid {
    grid-template-columns: 1fr;
  }

  .km-tip {
    padding: var(--space-4);
  }

  .km-filters {
    padding-bottom: 4px;
  }

  .km-modal {
    padding: var(--space-5);
    border-radius: var(--radius-xl);
  }

  .km-modal-actions {
    flex-direction: column-reverse;
    gap: var(--space-2);
  }

  .km-modal-submit,
  .km-modal-cancel {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
}

/* Small Mobile: < 480px */
@media (max-width: 479px) {
  .km-main {
    padding: var(--space-4) var(--space-3);
  }

  .km-hero-title {
    font-size: 18px;
  }

  .km-slide {
    flex: 0 0 92%;
    border-radius: var(--radius-xl);
  }

  .km-slide-title {
    font-size: 14px;
  }

  .km-slide-overlay {
    padding: var(--space-3);
  }

  .km-carousel {
    gap: var(--space-3);
  }

  .km-trend-name {
    font-size: 12px;
  }

  .km-tip-title {
    font-size: 14px;
  }

  .km-filters {
    gap: 6px;
  }

  .km-filter {
    padding: 6px 14px;
    font-size: 11px;
  }

  .km-cta h3 {
    font-size: 16px;
  }

  .km-modal {
    padding: var(--space-4);
    max-height: 95vh;
  }

  .km-form-input,
  .km-form-select,
  .km-form-textarea {
    font-size: 14px; /* Prevents iOS zoom on focus */
  }
}