/* Homepage — CalculatorDrive landing (responsive: 320px → ultra-wide) */

.landing {
  font-family: var(--cd-font-ui);
  font-size: var(--cd-text-base);
  color: var(--cd-text);
  background: var(--cd-surface-elevated);
  overflow-x: clip;
}

/* Hero */
.landing-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(2.5rem, 7vw, 6rem) clamp(3rem, 9vw, 7rem);
  padding-inline: max(1rem, env(safe-area-inset-left, 0px)) max(1rem, env(safe-area-inset-right, 0px));
  border-bottom: 1px solid var(--cd-border);
}

.landing-hero__mesh {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(13, 148, 136, 0.14), transparent 55%),
    radial-gradient(ellipse 60% 50% at 90% 10%, rgba(79, 70, 229, 0.1), transparent 50%),
    radial-gradient(ellipse 50% 40% at 70% 90%, rgba(194, 65, 12, 0.08), transparent 45%),
    linear-gradient(180deg, var(--cd-surface) 0%, #f0ebe3 100%);
}

.landing-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(12, 18, 34, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12, 18, 34, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, black 0%, transparent 85%);
  opacity: 0.6;
}

.landing-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--cd-max-width);
  margin: 0 auto;
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  width: 100%;
}

@media (min-width: 768px) {
  .landing-hero__inner {
    gap: 2.5rem;
  }
}

@media (min-width: 900px) {
  .landing-hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
  }
}

.landing-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  padding: 8px 14px 8px 10px;
  background: var(--cd-surface-elevated);
  border: 1px solid var(--cd-border);
  border-radius: 999px;
  font-family: var(--cd-font-ui);
  font-size: clamp(0.6875rem, 2.5vw, 0.75rem);
  font-weight: 600;
  color: var(--cd-text-secondary);
  margin-bottom: clamp(1rem, 3vw, 1.5rem);
  box-shadow: var(--cd-shadow-sm);
}

.landing-eyebrow__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cd-accent);
  box-shadow: 0 0 0 4px var(--cd-accent-soft);
}

.landing-hero__title {
  font-family: var(--cd-font-display);
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--cd-text);
  margin: 0 0 1.25rem;
}

.landing-hero__title em {
  font-style: normal;
  color: var(--cd-accent);
}

.landing-hero__lead {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  line-height: 1.65;
  color: var(--cd-text-secondary);
  max-width: 34rem;
  margin: 0 0 2rem;
}

.landing-search {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  max-width: 100%;
  margin-bottom: 1.25rem;
}

.landing-search__field {
  position: relative;
  width: 100%;
}

.landing-search__input {
  width: 100%;
  min-height: 48px;
  padding: 14px 16px 14px 48px;
  font-family: var(--cd-font-ui);
  font-size: 16px; /* prevents iOS zoom on focus */
  color: var(--cd-text);
  background: var(--cd-surface-elevated);
  border: 1px solid var(--cd-border-strong);
  border-radius: var(--cd-radius-lg);
  outline: none;
  box-shadow: var(--cd-shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}

.landing-search__input:focus {
  border-color: var(--cd-accent);
  box-shadow: 0 0 0 4px var(--cd-accent-soft);
}

.landing-search__icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cd-text-muted);
  pointer-events: none;
}

[dir="rtl"] .landing-search__icon {
  left: auto;
  right: 18px;
}

[dir="rtl"] .landing-search__input {
  padding: 14px 48px 14px 16px;
}

.landing-search__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 48px;
  padding: 12px 22px;
  font-family: var(--cd-font-ui);
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  background: var(--cd-accent);
  border: none;
  border-radius: var(--cd-radius-lg);
  cursor: pointer;
  transition: background 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.landing-search__btn-icon {
  display: none;
  font-size: 1rem;
}

@media (min-width: 520px) {
  .landing-search {
    flex-direction: row;
    align-items: stretch;
    gap: 0;
    position: relative;
  }

  .landing-search__field {
    flex: 1;
    min-width: 0;
  }

  .landing-search__input {
    min-height: 52px;
    padding: 16px 130px 16px 48px;
    border-radius: var(--cd-radius-lg);
  }

  [dir="rtl"] .landing-search__input {
    padding: 16px 48px 16px 130px;
  }

  .landing-search__btn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: auto;
    min-height: 44px;
    padding: 10px 22px;
    border-radius: calc(var(--cd-radius-lg) - 4px);
  }

  [dir="rtl"] .landing-search__btn {
    right: auto;
    left: 6px;
  }
}

@media (min-width: 520px) and (max-width: 639px) {
  .landing-search__btn-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .landing-search__btn {
    width: 44px;
    padding: 10px;
  }

  .landing-search__btn-icon {
    display: block;
  }

  .landing-search__input {
    padding-right: 56px;
  }

  [dir="rtl"] .landing-search__input {
    padding-right: 48px;
    padding-left: 56px;
  }
}

@media (hover: hover) {
  .landing-search__btn:hover {
    background: var(--cd-accent-hover);
  }
}

.landing-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.landing-chip {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 14px;
  font-family: var(--cd-font-ui);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--cd-text-secondary);
  background: var(--cd-surface-elevated);
  border: 1px solid var(--cd-border);
  border-radius: 999px;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
  .landing-chip:hover {
    border-color: var(--cd-accent);
    color: var(--cd-accent);
  }
}

/* Mobile highlights (hidden when side panel shows) */
.landing-hero__strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 1.25rem;
}

.landing-hero__strip-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 72px;
  padding: 0.75rem 0.5rem;
  text-align: center;
  background: var(--cd-surface-elevated);
  border: 1px solid var(--cd-border);
  border-radius: var(--cd-radius-md);
  box-shadow: var(--cd-shadow-sm);
}

.landing-hero__strip-value {
  font-family: var(--cd-font-display);
  font-size: clamp(1.125rem, 4vw, 1.375rem);
  font-weight: 600;
  color: var(--cd-text);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.landing-hero__strip-value i {
  color: var(--cd-accent);
  font-size: 1.125rem;
}

.landing-hero__strip-label {
  font-family: var(--cd-font-ui);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--cd-text-muted);
  line-height: 1.3;
}

@media (min-width: 900px) {
  .landing-hero__strip {
    display: none;
  }
}

/* Hero visual panel */
.landing-hero__panel {
  display: none;
  background: var(--cd-surface-elevated);
  border: 1px solid var(--cd-border);
  border-radius: var(--cd-radius-xl);
  padding: 1.5rem;
  box-shadow: var(--cd-shadow-lg);
}

@media (min-width: 900px) {
  .landing-hero__panel {
    display: block;
  }
}

.landing-panel-stat {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 1rem;
}

.landing-panel-stat__item {
  padding: 1rem;
  background: var(--cd-surface);
  border-radius: var(--cd-radius-md);
  border: 1px solid var(--cd-border);
}

.landing-panel-stat__value {
  font-family: var(--cd-font-display);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--cd-text);
  letter-spacing: -0.02em;
}

.landing-panel-stat__label {
  font-family: var(--cd-font-ui);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--cd-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

.landing-panel-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.landing-panel-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--cd-border);
  font-family: var(--cd-font-ui);
  font-size: 0.8125rem;
  color: var(--cd-text-secondary);
}

.landing-panel-list li:last-child {
  border-bottom: none;
}

.landing-panel-list i {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--cd-radius-sm);
  background: var(--cd-accent-soft);
  color: var(--cd-accent);
}

/* Sections */
.landing-section {
  padding-block: clamp(2.5rem, 7vw, 5.5rem);
  padding-inline: max(1rem, env(safe-area-inset-left, 0px)) max(1rem, env(safe-area-inset-right, 0px));
}

.landing-section--alt {
  background: var(--cd-surface-elevated);
  border-block: 1px solid var(--cd-border);
}

.landing-section__head {
  max-width: var(--cd-max-width);
  margin: 0 auto clamp(2rem, 5vw, 3rem);
  padding-inline: 0;
  text-align: center;
}

.landing-section__kicker {
  font-family: var(--cd-font-ui);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cd-accent);
  margin-bottom: 0.75rem;
}

.landing-section__title {
  font-family: var(--cd-font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
  color: var(--cd-text);
}

.landing-section__desc {
  font-size: clamp(0.9375rem, 2.5vw, 1.0625rem);
  color: var(--cd-text-secondary);
  max-width: 36rem;
  margin: 0 auto;
  padding-inline: 0.25rem;
  line-height: 1.6;
}

.landing-bento {
  max-width: var(--cd-max-width);
  margin: 0 auto;
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

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

@media (min-width: 1024px) {
  .landing-bento {
    grid-template-columns: repeat(4, 1fr);
  }
}

.landing-cat {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  background: var(--cd-surface-elevated);
  border: 1px solid var(--cd-border);
  border-radius: var(--cd-radius-lg);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.3s var(--cd-ease), box-shadow 0.3s var(--cd-ease), border-color 0.3s ease;
}

.landing-cat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--cat-accent, var(--cd-accent));
  opacity: 0;
  transition: opacity 0.3s ease;
}

@media (hover: hover) {
  .landing-cat:hover {
    transform: translateY(-4px);
    box-shadow: var(--cd-shadow-md);
    border-color: var(--cd-border-strong);
  }

  .landing-cat:hover::before {
    opacity: 1;
  }
}

@media (hover: none) {
  .landing-cat:active {
    transform: scale(0.99);
    border-color: var(--cd-border-strong);
  }
}

.landing-cat--math { --cat-accent: var(--cd-math); }
.landing-cat--finance { --cat-accent: var(--cd-finance); }
.landing-cat--health { --cat-accent: var(--cd-health); }
.landing-cat--utility { --cat-accent: var(--cd-utility); }

.landing-cat__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--cd-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
  background: color-mix(in srgb, var(--cat-accent) 12%, transparent);
  color: var(--cat-accent);
}

.landing-cat__title {
  font-family: var(--cd-font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--cd-text);
  margin-bottom: 4px;
}

.landing-cat__count {
  font-family: var(--cd-font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cat-accent);
  margin-bottom: 10px;
}

.landing-cat__desc {
  font-size: 0.875rem;
  color: var(--cd-text-secondary);
  line-height: 1.55;
  flex: 1;
  margin-bottom: 1rem;
}

.landing-cat__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 1rem;
}

.landing-cat__tag {
  padding: 4px 10px;
  font-family: var(--cd-font-ui);
  font-size: 0.6875rem;
  font-weight: 500;
  background: var(--cd-surface);
  border-radius: 999px;
  color: var(--cd-text-muted);
}

.landing-cat__arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--cd-font-ui);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--cat-accent);
}

/* Features */
.landing-features {
  max-width: var(--cd-max-width);
  margin: 0 auto;
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

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

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

.landing-feature {
  padding: 1.5rem;
  background: var(--cd-surface);
  border: 1px solid var(--cd-border);
  border-radius: var(--cd-radius-lg);
  transition: box-shadow 0.25s ease;
}

.landing-section--alt .landing-feature {
  background: var(--cd-surface-elevated);
}

@media (hover: hover) {
  .landing-feature:hover {
    box-shadow: var(--cd-shadow-sm);
  }
}

.landing-feature__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--cd-radius-md);
  background: var(--cd-accent-soft);
  color: var(--cd-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.landing-feature__title {
  font-family: var(--cd-font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--cd-text);
}

.landing-feature__text {
  font-size: 0.875rem;
  color: var(--cd-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Stats strip */
.landing-stats {
  max-width: var(--cd-max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 400px) {
  .landing-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
}

.landing-stat {
  text-align: center;
  padding: clamp(1.25rem, 4vw, 2rem) clamp(0.75rem, 3vw, 1rem);
  background: var(--cd-surface-elevated);
  border: 1px solid var(--cd-border);
  border-radius: var(--cd-radius-lg);
}

.landing-stat__num {
  font-family: var(--cd-font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  color: var(--cd-text);
  letter-spacing: -0.02em;
}

.landing-stat__label {
  font-family: var(--cd-font-ui);
  font-size: 0.875rem;
  color: var(--cd-text-muted);
  margin-top: 6px;
}

/* CTA */
.landing-cta {
  max-width: 42rem;
  margin: 0 auto;
  text-align: center;
  padding: clamp(2rem, 6vw, 3rem) clamp(1.25rem, 4vw, 1.5rem);
  background: var(--cd-ink);
  border-radius: var(--cd-radius-xl);
  color: #fff;
  box-shadow: var(--cd-shadow-lg);
}

.landing-cta__title {
  font-family: var(--cd-font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.landing-cta__text {
  font-size: 1rem;
  color: rgba(226, 232, 240, 0.85);
  margin: 0 0 1.75rem;
  line-height: 1.6;
}

.landing-cta__actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
}

@media (min-width: 480px) {
  .landing-cta__actions {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
  }
}

.landing-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 14px 28px;
  font-family: var(--cd-font-ui);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

@media (min-width: 480px) {
  .landing-btn {
    width: auto;
  }
}

@media (hover: hover) {
  .landing-btn:hover {
    transform: translateY(-2px);
  }
}

.landing-btn--primary {
  background: var(--cd-accent);
  color: #fff;
}

.landing-btn--ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

@media (hover: hover) {
  .landing-btn--primary:hover {
    background: var(--cd-accent-hover);
  }

  .landing-btn--ghost:hover {
    background: rgba(255, 255, 255, 0.08);
  }
}

/* Reveal animation */
.landing-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--cd-ease), transform 0.6s var(--cd-ease);
}

.landing-reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Tablet landscape & small laptops */
@media (min-width: 768px) and (max-width: 899px) {
  .landing-bento {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Large desktops */
@media (min-width: 1280px) {
  .landing-hero,
  .landing-section {
    padding-inline: max(1.5rem, env(safe-area-inset-left, 0px)) max(1.5rem, env(safe-area-inset-right, 0px));
  }

  .landing-hero__title {
    font-size: 3.75rem;
  }
}

/* Very small phones */
@media (max-width: 359px) {
  .landing-hero__strip-label {
    font-size: 0.5625rem;
    letter-spacing: 0.02em;
  }

  .landing-chip {
    font-size: 0.75rem;
    padding: 6px 10px;
  }
}

/* Short viewports (landscape phones) */
@media (max-height: 500px) and (orientation: landscape) {
  .landing-hero {
    padding-block: 2rem;
  }

  .landing-hero__strip {
    margin-bottom: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .landing-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .landing-eyebrow__dot {
    animation: none;
  }

  .landing-cat,
  .landing-btn {
    transition: none;
  }
}