@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css');

.fb-cover-size-converter-wrap {
  position: relative;
  width: 100%;
  max-width: none;
  overflow-x: hidden;
  box-sizing: border-box;
  border-radius: 0 !important;
  padding: 32px 16px;
  color: #f8fbff;
  background:
    radial-gradient(circle at 12% 8%, rgba(0, 214, 255, 0.34), transparent 30%),
    radial-gradient(circle at 84% 18%, rgba(255, 71, 166, 0.28), transparent 32%),
    linear-gradient(135deg, #123b8f 0%, #2357d7 42%, #0b1838 100%);
  font-family: Arial, Helvetica, sans-serif;
}

.fb-cover-size-converter-wrap,
.fb-cover-size-converter-wrap div,
.fb-cover-size-converter-wrap section,
.fb-cover-size-converter-wrap header,
.fb-cover-size-converter-wrap label,
.fb-cover-size-converter-wrap input,
.fb-cover-size-converter-wrap button,
.fb-cover-size-converter-wrap img,
.fb-cover-size-converter-wrap svg,
.fb-cover-size-converter-wrap span,
.fb-cover-size-converter-wrap strong,
.fb-cover-size-converter-wrap p,
.fb-cover-size-converter-wrap h1 {
  box-sizing: border-box;
}

.fb-cover-size-converter-wrap__container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  box-sizing: border-box;
}

.fb-cover-size-converter-wrap__header {
  text-align: center;
  margin: 0 0 24px;
}

.fb-cover-size-converter-wrap__title {
  margin: 0;
  font-size: clamp(1.5rem, 5vw, 2.8rem);
  line-height: 1.08;
  letter-spacing: 0;
  color: #ffffff;
}

.fb-cover-size-converter-wrap__subtitle {
  max-width: 720px;
  margin: 12px auto 0;
  font-size: 1rem;
  line-height: 1.55;
  color: rgba(248, 251, 255, 0.88);
  text-align: center;
}

.fb-cover-size-converter-wrap__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: stretch;
  width: 100%;
  max-width: 100%;
}

.fb-cover-size-converter-wrap__panel {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 20px 50px rgba(0, 13, 51, 0.28);
  backdrop-filter: blur(18px);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.fb-cover-size-converter-wrap__panel:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.34);
  box-shadow: 0 24px 60px rgba(0, 13, 51, 0.36);
}

.fb-cover-size-converter-wrap__input-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.fb-cover-size-converter-wrap__result-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
  box-sizing: border-box;
}

.fb-cover-size-converter-wrap__dropzone {
  display: flex;
  min-height: 156px;
  width: 100%;
  max-width: 100%;
  padding: 16px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
  text-align: center;
  cursor: pointer;
  border: 1px dashed rgba(255, 255, 255, 0.52);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.12);
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.fb-cover-size-converter-wrap__dropzone:focus-within,
.fb-cover-size-converter-wrap__dropzone:focus,
.fb-cover-size-converter-wrap__dropzone.fb-cover-size-converter-wrap__dropzone--drag {
  outline: none;
  border-color: #8ee9ff;
  background: rgba(142, 233, 255, 0.16);
  box-shadow: 0 0 0 4px rgba(142, 233, 255, 0.18), 0 0 28px rgba(142, 233, 255, 0.22);
}

.fb-cover-size-converter-wrap__file-input {
  width: 1px;
  height: 1px;
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.fb-cover-size-converter-wrap__drop-icon svg,
.fb-cover-size-converter-wrap__placeholder svg {
  width: 46px;
  height: 46px;
  fill: #dff7ff;
  filter: drop-shadow(0 0 12px rgba(142, 233, 255, 0.35));
}

.fb-cover-size-converter-wrap__drop-main {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
}

.fb-cover-size-converter-wrap__drop-sub {
  display: block;
  font-size: 0.9rem;
  line-height: 1.35;
  color: rgba(248, 251, 255, 0.76);
}

.fb-cover-size-converter-wrap__file-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.fb-cover-size-converter-wrap__file-name {
  min-height: 24px;
  overflow-wrap: anywhere;
  font-size: 0.95rem;
  font-weight: 800;
  color: #ffffff;
}

.fb-cover-size-converter-wrap__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  max-width: 100%;
}

.fb-cover-size-converter-wrap__stat {
  min-width: 0;
  padding: 10px 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  background: rgba(7, 19, 50, 0.3);
}

.fb-cover-size-converter-wrap__stat span,
.fb-cover-size-converter-wrap__stat strong {
  display: block;
  max-width: 100%;
  overflow-wrap: anywhere;
  text-align: center;
}

.fb-cover-size-converter-wrap__stat span {
  margin: 0 0 4px;
  font-size: 0.72rem;
  line-height: 1.25;
  color: rgba(248, 251, 255, 0.7);
}

.fb-cover-size-converter-wrap__stat strong {
  font-size: 0.9rem;
  line-height: 1.25;
  color: #ffffff;
}

.fb-cover-size-converter-wrap__controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.fb-cover-size-converter-wrap__dimension-row,
.fb-cover-size-converter-wrap__quality-row,
.fb-cover-size-converter-wrap__actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  width: 100%;
  max-width: 100%;
}

.fb-cover-size-converter-wrap__field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  color: rgba(248, 251, 255, 0.86);
  font-size: 0.9rem;
  font-weight: 800;
}

.fb-cover-size-converter-wrap__field span {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.fb-cover-size-converter-wrap__number-input,
.fb-cover-size-converter-wrap__range-input {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.94);
  color: #102044;
  font-size: 1rem;
  outline: none;
  transition: box-shadow 180ms ease, border-color 180ms ease;
}

.fb-cover-size-converter-wrap__number-input {
  padding: 0 12px;
}

.fb-cover-size-converter-wrap__range-input {
  accent-color: #35d6ff;
  padding: 0;
}

.fb-cover-size-converter-wrap__number-input:focus,
.fb-cover-size-converter-wrap__range-input:focus {
  border-color: #8ee9ff;
  box-shadow: 0 0 0 4px rgba(142, 233, 255, 0.22);
}

.fb-cover-size-converter-wrap__toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: 100%;
  min-height: 44px;
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 800;
  cursor: pointer;
}

.fb-cover-size-converter-wrap__toggle input {
  width: 1px;
  height: 1px;
  position: absolute;
  opacity: 0;
}

.fb-cover-size-converter-wrap__toggle-ui {
  display: inline-flex;
  flex: 0 0 auto;
  width: 44px;
  height: 26px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.22);
  transition: background 180ms ease, box-shadow 180ms ease;
}

.fb-cover-size-converter-wrap__toggle-ui svg {
  width: 15px;
  height: 15px;
  fill: rgba(255, 255, 255, 0.72);
}

.fb-cover-size-converter-wrap__toggle input:checked + .fb-cover-size-converter-wrap__toggle-ui {
  background: #35d6ff;
  box-shadow: 0 0 18px rgba(53, 214, 255, 0.42);
}

.fb-cover-size-converter-wrap__toggle input:checked + .fb-cover-size-converter-wrap__toggle-ui svg {
  fill: #071332;
}

.fb-cover-size-converter-wrap__toggle input:focus + .fb-cover-size-converter-wrap__toggle-ui {
  box-shadow: 0 0 0 4px rgba(142, 233, 255, 0.22);
}

.fb-cover-size-converter-wrap__button {
  width: 100%;
  max-width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  border: 0;
  border-radius: 12px;
  font-size: 0.98rem;
  font-weight: 900;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.fb-cover-size-converter-wrap__button:focus {
  outline: 3px solid rgba(255, 255, 255, 0.78);
  outline-offset: 3px;
}

.fb-cover-size-converter-wrap__button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.fb-cover-size-converter-wrap__button-primary {
  color: #071332;
  background: linear-gradient(135deg, #8ee9ff, #ffffff);
  box-shadow: 0 10px 26px rgba(53, 214, 255, 0.28);
}

.fb-cover-size-converter-wrap__button-secondary {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.26);
}

.fb-cover-size-converter-wrap__download-button {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #071332;
  background: linear-gradient(135deg, #46ffbd, #dff7ff);
  box-shadow: 0 10px 26px rgba(70, 255, 189, 0.22);
}

.fb-cover-size-converter-wrap__download-button svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.fb-cover-size-converter-wrap__download-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
  box-shadow: none;
}

.fb-cover-size-converter-wrap__status {
  min-height: 22px;
  padding: 0;
  font-size: 0.9rem;
  line-height: 1.45;
  color: rgba(248, 251, 255, 0.9);
}

.fb-cover-size-converter-wrap__status.fb-cover-size-converter-wrap__status--error {
  color: #ffe1e7;
}

.fb-cover-size-converter-wrap__status.fb-cover-size-converter-wrap__status--warning {
  color: #fff3c4;
}

.fb-cover-size-converter-wrap__status.fb-cover-size-converter-wrap__status--success {
  color: #d9ffe8;
}

.fb-cover-size-converter-wrap__preview {
  flex-grow: 1;
  display: flex;
  width: 100%;
  max-width: 100%;
  min-height: 170px;
  max-height: 250px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  background: rgba(7, 19, 50, 0.32);
}

.fb-cover-size-converter-wrap__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  min-width: 0;
  gap: 8px;
  text-align: center;
  color: rgba(248, 251, 255, 0.78);
  font-weight: 800;
}

.fb-cover-size-converter-wrap__result-image {
  display: none;
  max-width: 100%;
  max-height: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 10px;
}

.fb-cover-size-converter-wrap__result-image.fb-cover-size-converter-wrap__result-image--ready {
  display: block;
  animation: fb-cover-size-converter-wrap-fade 220ms ease both;
}

@keyframes fb-cover-size-converter-wrap-fade {
  from { opacity: 0; transform: scale(0.985); }
  to { opacity: 1; transform: scale(1); }
}

@media (min-width: 320px) and (max-width: 374px) {
  .fb-cover-size-converter-wrap {
    padding: 24px 8px;
    border-radius: 0 !important;
  }

  .fb-cover-size-converter-wrap__container {
    width: 100%;
  }

  .fb-cover-size-converter-wrap__title {
    font-size: clamp(1.5rem, 5vw, 2.8rem);
  }

  .fb-cover-size-converter-wrap__subtitle {
    font-size: 0.9rem;
  }

  .fb-cover-size-converter-wrap__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .fb-cover-size-converter-wrap__panel {
    padding: 12px;
  }

  .fb-cover-size-converter-wrap__dropzone {
    min-height: 132px;
    padding: 12px;
  }

  .fb-cover-size-converter-wrap__number-input,
  .fb-cover-size-converter-wrap__range-input {
    height: 44px;
    font-size: 0.95rem;
  }

  .fb-cover-size-converter-wrap__dimension-row,
  .fb-cover-size-converter-wrap__quality-row {
    grid-template-columns: 1fr;
  }

  .fb-cover-size-converter-wrap__button {
    min-height: 46px;
    font-size: 0.94rem;
  }

  .fb-cover-size-converter-wrap__preview {
    min-height: 156px;
    max-height: 220px;
  }

  .fb-cover-size-converter-wrap__result-image {
    max-width: 100%;
    max-height: 100%;
  }
}

@media (min-width: 375px) and (max-width: 429px) {
  .fb-cover-size-converter-wrap {
    padding: 24px 12px;
    border-radius: 0 !important;
  }

  .fb-cover-size-converter-wrap__container {
    width: 100%;
  }

  .fb-cover-size-converter-wrap__title {
    font-size: clamp(1.5rem, 5vw, 2.8rem);
  }

  .fb-cover-size-converter-wrap__subtitle {
    font-size: 0.94rem;
  }

  .fb-cover-size-converter-wrap__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .fb-cover-size-converter-wrap__panel {
    padding: 12px;
  }

  .fb-cover-size-converter-wrap__dropzone {
    min-height: 140px;
  }

  .fb-cover-size-converter-wrap__number-input,
  .fb-cover-size-converter-wrap__range-input {
    height: 46px;
  }

  .fb-cover-size-converter-wrap__dimension-row,
  .fb-cover-size-converter-wrap__quality-row {
    grid-template-columns: 1fr;
  }

  .fb-cover-size-converter-wrap__button {
    min-height: 48px;
  }

  .fb-cover-size-converter-wrap__preview {
    min-height: 160px;
    max-height: 230px;
  }

  .fb-cover-size-converter-wrap__result-image {
    max-width: 100%;
    max-height: 100%;
  }
}

@media (min-width: 430px) and (max-width: 767px) {
  .fb-cover-size-converter-wrap {
    padding: 28px 16px;
    border-radius: 0 !important;
  }

  .fb-cover-size-converter-wrap__container {
    width: 100%;
  }

  .fb-cover-size-converter-wrap__title {
    font-size: clamp(1.5rem, 5vw, 2.8rem);
  }

  .fb-cover-size-converter-wrap__subtitle {
    font-size: 0.98rem;
  }

  .fb-cover-size-converter-wrap__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .fb-cover-size-converter-wrap__panel {
    padding: 16px;
  }

  .fb-cover-size-converter-wrap__dropzone {
    min-height: 150px;
  }

  .fb-cover-size-converter-wrap__number-input,
  .fb-cover-size-converter-wrap__range-input {
    height: 46px;
  }

  .fb-cover-size-converter-wrap__dimension-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fb-cover-size-converter-wrap__quality-row {
    grid-template-columns: 1fr;
  }

  .fb-cover-size-converter-wrap__button {
    min-height: 48px;
  }

  .fb-cover-size-converter-wrap__preview {
    min-height: 164px;
    max-height: 240px;
  }

  .fb-cover-size-converter-wrap__result-image {
    max-width: 100%;
    max-height: 100%;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .fb-cover-size-converter-wrap {
    padding: 32px 24px;
    border-radius: 0 !important;
  }

  .fb-cover-size-converter-wrap__container {
    width: 100%;
  }

  .fb-cover-size-converter-wrap__title {
    font-size: clamp(1.5rem, 5vw, 2.8rem);
  }

  .fb-cover-size-converter-wrap__subtitle {
    font-size: 1rem;
  }

  .fb-cover-size-converter-wrap__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .fb-cover-size-converter-wrap__panel {
    padding: 20px;
  }

  .fb-cover-size-converter-wrap__dropzone {
    min-height: 158px;
  }

  .fb-cover-size-converter-wrap__number-input,
  .fb-cover-size-converter-wrap__range-input {
    height: 48px;
  }

  .fb-cover-size-converter-wrap__dimension-row,
  .fb-cover-size-converter-wrap__quality-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fb-cover-size-converter-wrap__actions {
    grid-template-columns: 1.35fr 0.65fr;
  }

  .fb-cover-size-converter-wrap__button {
    min-height: 48px;
  }

  .fb-cover-size-converter-wrap__preview {
    min-height: 170px;
    max-height: 260px;
  }

  .fb-cover-size-converter-wrap__result-image {
    max-width: 100%;
    max-height: 100%;
  }
}

@media (min-width: 1024px) and (max-width: 1199px) {
  .fb-cover-size-converter-wrap {
    padding: 32px 24px;
    border-radius: 0 !important;
  }

  .fb-cover-size-converter-wrap__container {
    width: 100%;
  }

  .fb-cover-size-converter-wrap__title {
    font-size: clamp(1.5rem, 5vw, 2.8rem);
  }

  .fb-cover-size-converter-wrap__subtitle {
    font-size: 1rem;
  }

  .fb-cover-size-converter-wrap__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
    align-items: stretch;
  }

  .fb-cover-size-converter-wrap__panel {
    padding: 20px;
  }

  .fb-cover-size-converter-wrap__dropzone {
    min-height: 156px;
  }

  .fb-cover-size-converter-wrap__number-input,
  .fb-cover-size-converter-wrap__range-input {
    height: 46px;
  }

  .fb-cover-size-converter-wrap__dimension-row,
  .fb-cover-size-converter-wrap__quality-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fb-cover-size-converter-wrap__actions {
    grid-template-columns: 1.35fr 0.65fr;
  }

  .fb-cover-size-converter-wrap__button {
    min-height: 48px;
  }

  .fb-cover-size-converter-wrap__preview {
    min-height: 170px;
    max-height: none;
  }

  .fb-cover-size-converter-wrap__result-image {
    max-width: 100%;
    max-height: 100%;
  }
}

@media (min-width: 1200px) {
  .fb-cover-size-converter-wrap {
    padding: 32px 32px;
    border-radius: 0 !important;
  }

  .fb-cover-size-converter-wrap__container {
    width: 100%;
  }

  .fb-cover-size-converter-wrap__title {
    font-size: clamp(1.5rem, 5vw, 2.8rem);
  }

  .fb-cover-size-converter-wrap__subtitle {
    font-size: 1.05rem;
  }

  .fb-cover-size-converter-wrap__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 24px;
    align-items: stretch;
  }

  .fb-cover-size-converter-wrap__panel {
    padding: 24px;
  }

  .fb-cover-size-converter-wrap__dropzone {
    min-height: 164px;
  }

  .fb-cover-size-converter-wrap__number-input,
  .fb-cover-size-converter-wrap__range-input {
    height: 48px;
  }

  .fb-cover-size-converter-wrap__dimension-row,
  .fb-cover-size-converter-wrap__quality-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fb-cover-size-converter-wrap__actions {
    grid-template-columns: 1.35fr 0.65fr;
  }

  .fb-cover-size-converter-wrap__button {
    min-height: 50px;
  }

  .fb-cover-size-converter-wrap__preview {
    min-height: 176px;
    max-height: none;
  }

  .fb-cover-size-converter-wrap__result-image {
    max-width: 100%;
    max-height: 100%;
  }
}