/* =========================================================
   niDar Tools — Image Resizer Pro
   Independent Tool UI
   ========================================================= */

:root {
  --ir-bg: #f5f8f6;
  --ir-card: #ffffff;
  --ir-card-soft: #f8fbf9;
  --ir-text: #17201b;
  --ir-muted: #66736b;
  --ir-border: #dfe8e2;
  --ir-primary: #2e7d32;
  --ir-primary-dark: #205d24;
  --ir-primary-soft: #e8f5e9;
  --ir-accent: #66bb6a;
  --ir-warning: #9a6700;
  --ir-warning-bg: #fff8e1;
  --ir-success: #1b7f3a;
  --ir-shadow: 0 18px 45px rgba(31, 60, 39, 0.08);
  --ir-radius: 20px;
  --ir-radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(102, 187, 106, 0.10), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(46, 125, 50, 0.08), transparent 28%),
    var(--ir-bg);
  color: var(--ir-text);
  font-family:
    Inter,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

/* =========================================================
   MAIN PAGE
   ========================================================= */

.resizer-page {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 52px 0 80px;
}

/* =========================================================
   HERO
   ========================================================= */

.tool-hero {
  max-width: 850px;
  margin: 0 auto 38px;
  text-align: center;
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid rgba(46, 125, 50, 0.16);
  border-radius: 999px;
  background: var(--ir-primary-soft);
  color: var(--ir-primary-dark);
  font-size: 13px;
  font-weight: 700;
}

.tool-hero h1 {
  margin: 16px 0 10px;
  font-size: clamp(36px, 6vw, 58px);
  line-height: 1.08;
  letter-spacing: -1.8px;
}

.tool-hero > p {
  max-width: 720px;
  margin: 0 auto;
  color: var(--ir-muted);
  font-size: 17px;
}

.tool-benefits {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.tool-benefits span {
  padding: 7px 12px;
  border: 1px solid var(--ir-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ir-muted);
  font-size: 13px;
  font-weight: 600;
}

/* =========================================================
   WORKSPACE
   ========================================================= */

.resizer-workspace {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 24px;
  align-items: start;
}

.workspace-card {
  min-width: 0;
  padding: 26px;
  border: 1px solid var(--ir-border);
  border-radius: var(--ir-radius);
  background: var(--ir-card);
  box-shadow: var(--ir-shadow);
}

.settings-card {
  position: sticky;
  top: 20px;
}

/* =========================================================
   SECTION HEADING
   ========================================================= */

.section-heading > div {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.step-number {
  display: inline-flex;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--ir-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

.section-heading h2 {
  margin: 0;
  font-size: 21px;
  line-height: 1.25;
}

.section-heading p {
  margin: 4px 0 0;
  color: var(--ir-muted);
  font-size: 13px;
}

/* =========================================================
   UPLOAD ZONE
   ========================================================= */

.upload-zone {
  display: flex;
  min-height: 340px;
  margin-top: 24px;
  padding: 34px 24px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  border: 2px dashed rgba(46, 125, 50, 0.34);
  border-radius: 18px;
  background:
    linear-gradient(
      145deg,
      rgba(232, 245, 233, 0.72),
      rgba(248, 251, 249, 0.90)
    );
  cursor: pointer;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.upload-zone:hover,
.upload-zone.drag-over {
  transform: translateY(-2px);
  border-color: var(--ir-primary);
  background: var(--ir-primary-soft);
  box-shadow: 0 14px 32px rgba(46, 125, 50, 0.10);
}

.upload-icon {
  display: flex;
  width: 72px;
  height: 72px;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 10px 25px rgba(31, 60, 39, 0.08);
  font-size: 31px;
}

.upload-zone h3 {
  margin: 0;
  font-size: 21px;
}

.upload-zone p {
  margin: 5px 0;
  color: var(--ir-muted);
  font-size: 13px;
}

.select-image-btn {
  display: inline-flex;
  margin: 10px 0 13px;
  padding: 11px 20px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--ir-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

.upload-zone small {
  color: var(--ir-muted);
  font-size: 12px;
}

/* =========================================================
   PREVIEW
   ========================================================= */

.preview-area {
  margin-top: 24px;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.preview-header h3 {
  margin: 0;
  font-size: 17px;
}

.text-button {
  padding: 7px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ir-primary);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.text-button:hover {
  background: var(--ir-primary-soft);
}

.preview-frame {
  display: flex;
  min-height: 250px;
  max-height: 430px;
  padding: 18px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--ir-border);
  border-radius: 16px;
  background:
    linear-gradient(45deg, #edf1ee 25%, transparent 25%),
    linear-gradient(-45deg, #edf1ee 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #edf1ee 75%),
    linear-gradient(-45deg, transparent 75%, #edf1ee 75%);
  background-size: 22px 22px;
  background-position: 0 0, 0 11px, 11px -11px, -11px 0;
}

.preview-frame img {
  display: block;
  max-width: 100%;
  max-height: 390px;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.14);
}

.image-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.image-meta > div {
  padding: 12px;
  border: 1px solid var(--ir-border);
  border-radius: 10px;
  background: var(--ir-card-soft);
}

.image-meta span,
.image-meta strong {
  display: block;
}

.image-meta span {
  margin-bottom: 2px;
  color: var(--ir-muted);
  font-size: 11px;
}

.image-meta strong {
  font-size: 13px;
}

/* =========================================================
   SETTINGS
   ========================================================= */

.setting-block {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--ir-border);
}

.setting-block:first-of-type {
  margin-top: 20px;
  padding-top: 0;
  border-top: 0;
}

.setting-block label,
.sub-label {
  display: block;
  margin-bottom: 7px;
  color: var(--ir-text);
  font-size: 13px;
  font-weight: 700;
}

.sub-label {
  margin-top: 16px;
}

.setting-title {
  margin-bottom: 13px;
}

.setting-title h3 {
  margin: 0;
  font-size: 15px;
}

/* =========================================================
   INPUTS
   ========================================================= */

.input-grid {
  display: grid;
  gap: 10px;
}

.input-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.input-control {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--ir-border);
  border-radius: 10px;
  outline: none;
  background: #fff;
  color: var(--ir-text);
  font: inherit;
  font-size: 13px;
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.input-control:focus {
  border-color: var(--ir-primary);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.11);
}

input[type="number"].input-control {
  appearance: textfield;
}

.color-picker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.color-picker label {
  margin: 0;
}

.color-picker input[type="color"] {
  width: 54px;
  height: 40px;
  padding: 3px;
  border: 1px solid var(--ir-border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
}

/* =========================================================
   CHECKBOX
   ========================================================= */

.checkbox-row {
  display: flex !important;
  align-items: flex-start;
  gap: 10px;
  margin-top: 14px;
  cursor: pointer;
}

.checkbox-row input {
  flex: 0 0 auto;
  width: 17px;
  height: 17px;
  margin-top: 2px;
  accent-color: var(--ir-primary);
}

.checkbox-row span {
  display: block;
}

.checkbox-row strong,
.checkbox-row small {
  display: block;
}

.checkbox-row strong {
  font-size: 13px;
}

.checkbox-row small {
  margin-top: 2px;
  color: var(--ir-muted);
  font-size: 11px;
  font-weight: 400;
}

/* =========================================================
   NOTES / WARNINGS / STATUS
   ========================================================= */

.setting-note {
  margin: 10px 0 0;
  color: var(--ir-muted);
  font-size: 11px;
  line-height: 1.55;
}

.tool-warning,
.tool-status {
  margin: 10px 0 0;
  padding: 10px 12px;
  border-radius: 9px;
  font-size: 12px;
}

.tool-warning {
  border: 1px solid rgba(154, 103, 0, 0.18);
  background: var(--ir-warning-bg);
  color: var(--ir-warning);
}

.tool-status {
  background: var(--ir-primary-soft);
  color: var(--ir-primary-dark);
}

/* =========================================================
   AI OPTION
   ========================================================= */

.ai-option {
  margin-top: 14px;
  padding: 13px;
  border: 1px solid rgba(46, 125, 50, 0.16);
  border-radius: 12px;
  background: var(--ir-primary-soft);
}

/* =========================================================
   ADJUSTMENT BUTTONS
   ========================================================= */

.adjustment-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.secondary-button {
  min-height: 42px;
  padding: 9px 12px;
  border: 1px solid var(--ir-border);
  border-radius: 10px;
  background: #fff;
  color: var(--ir-text);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    background 0.18s ease;
}

.secondary-button:hover {
  transform: translateY(-1px);
  border-color: rgba(46, 125, 50, 0.35);
  background: var(--ir-primary-soft);
}

/* =========================================================
   SLIDERS
   ========================================================= */

.slider-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 18px;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.slider-label strong {
  color: var(--ir-primary);
  font-size: 12px;
}

input[type="range"] {
  width: 100%;
  margin: 7px 0 0;
  accent-color: var(--ir-primary);
  cursor: pointer;
}

/* =========================================================
   PROCESS
   ========================================================= */

.process-area {
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid var(--ir-border);
}

.primary-button {
  display: inline-flex;
  width: 100%;
  min-height: 48px;
  padding: 12px 18px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(
    135deg,
    var(--ir-primary),
    var(--ir-primary-dark)
  );
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(46, 125, 50, 0.20);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    opacity 0.18s ease;
}

.primary-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(46, 125, 50, 0.25);
}

.primary-button:active {
  transform: translateY(0);
}

.primary-button:disabled,
.secondary-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.processing-indicator {
  display: flex;
  min-height: 25px;
  margin-top: 10px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  color: var(--ir-muted);
  font-size: 11px;
  text-align: center;
}

.processing-indicator img {
  width: 20px;
  height: 20px;
  animation: ir-spin 1s linear infinite;
}

@keyframes ir-spin {
  to {
    transform: rotate(360deg);
  }
}

/* =========================================================
   RESULT
   ========================================================= */

.result-card {
  max-width: 820px;
  margin: 28px auto 0;
  padding: 32px 24px;
  text-align: center;
  border: 1px solid rgba(46, 125, 50, 0.18);
  border-radius: var(--ir-radius);
  background:
    radial-gradient(circle at top, rgba(102, 187, 106, 0.14), transparent 55%),
    var(--ir-card);
  box-shadow: var(--ir-shadow);
}

.result-icon {
  display: flex;
  width: 64px;
  height: 64px;
  margin: 0 auto 13px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--ir-primary-soft);
  font-size: 29px;
}

.result-card h2 {
  margin: 0;
  font-size: 27px;
}

.result-card > p {
  margin: 7px auto 0;
  color: var(--ir-muted);
  font-size: 14px;
}

.result-size {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 15px;
  border-radius: 10px;
  background: var(--ir-card-soft);
  color: var(--ir-muted);
  font-size: 13px;
}

.result-size strong {
  color: var(--ir-text);
}

.result-actions {
  display: flex;
  max-width: 500px;
  margin: 18px auto 0;
  gap: 10px;
}

.result-actions .primary-button,
.result-actions .secondary-button {
  flex: 1;
  width: auto;
}

/* =========================================================
   INFORMATION SECTION
   ========================================================= */

.info-section {
  margin-top: 58px;
}

.info-heading {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 12px;
  text-align: center;
}

.info-heading > span {
  font-size: 26px;
}

.info-heading h2 {
  margin: 0;
  font-size: 27px;
}

.info-heading p {
  margin: 4px 0 0;
  color: var(--ir-muted);
  font-size: 14px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.info-step {
  padding: 20px;
  border: 1px solid var(--ir-border);
  border-radius: 16px;
  background: var(--ir-card);
}

.info-step > span {
  color: var(--ir-primary);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 1px;
}

.info-step h3 {
  margin: 9px 0 5px;
  font-size: 16px;
}

.info-step p {
  margin: 0;
  color: var(--ir-muted);
  font-size: 12px;
}

/* =========================================================
   FEATURES
   ========================================================= */

.features-section {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.feature-card {
  padding: 22px;
  border: 1px solid var(--ir-border);
  border-radius: 16px;
  background: var(--ir-card);
}

.feature-card > span {
  display: block;
  margin-bottom: 10px;
  font-size: 24px;
}

.feature-card h3 {
  margin: 0 0 5px;
  font-size: 15px;
}

.feature-card p {
  margin: 0;
  color: var(--ir-muted);
  font-size: 12px;
}

/* =========================================================
   UTILITY
   ========================================================= */

.hidden {
  display: none !important;
}

button,
select,
input {
  font-family: inherit;
}

/* =========================================================
   DARK THEME
   ========================================================= */

html[data-theme="dark"] body,
body.dark-theme {
  --ir-bg: #0d1510;
  --ir-card: #152019;
  --ir-card-soft: #1a2820;
  --ir-text: #edf5ef;
  --ir-muted: #a5b3aa;
  --ir-border: #2b3a31;
  --ir-primary-soft: #17351d;
  --ir-warning-bg: #332b13;

  background:
    radial-gradient(circle at 10% 0%, rgba(76, 175, 80, 0.10), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(46, 125, 50, 0.10), transparent 28%),
    var(--ir-bg);
}

html[data-theme="dark"] .tool-benefits span,
body.dark-theme .tool-benefits span {
  background: rgba(21, 32, 25, 0.8);
}

html[data-theme="dark"] .upload-zone,
body.dark-theme .upload-zone {
  background: linear-gradient(
    145deg,
    rgba(23, 53, 29, 0.75),
    rgba(26, 40, 32, 0.95)
  );
}

html[data-theme="dark"] .upload-icon,
body.dark-theme .upload-icon,
html[data-theme="dark"] .input-control,
body.dark-theme .input-control,
html[data-theme="dark"] .secondary-button,
body.dark-theme .secondary-button,
html[data-theme="dark"] .color-picker input[type="color"],
body.dark-theme .color-picker input[type="color"] {
  background: #1a2820;
  color: var(--ir-text);
}

html[data-theme="dark"] .preview-frame,
body.dark-theme .preview-frame {
  background-color: #202b24;
  background-image:
    linear-gradient(45deg, #2a352e 25%, transparent 25%),
    linear-gradient(-45deg, #2a352e 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #2a352e 75%),
    linear-gradient(-45deg, transparent 75%, #2a352e 75%);
}

/* =========================================================
   SENIOR / HIGH VISIBILITY THEME
   ========================================================= */

html[data-theme="senior"] body {
  --ir-bg: #ffffff;
  --ir-card: #ffffff;
  --ir-card-soft: #f5f5f5;
  --ir-text: #000000;
  --ir-muted: #222222;
  --ir-border: #222222;
  --ir-primary: #006b21;
  --ir-primary-dark: #004d17;
  --ir-primary-soft: #e8f5e9;
  --ir-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

html[data-theme="senior"] body {
  font-size: 17px;
}

html[data-theme="senior"] .tool-hero h1 {
  font-size: clamp(38px, 7vw, 62px);
}

html[data-theme="senior"] .tool-hero > p,
html[data-theme="senior"] .section-heading p,
html[data-theme="senior"] .feature-card p,
html[data-theme="senior"] .info-step p {
  color: #111111;
}

html[data-theme="senior"] .input-control,
html[data-theme="senior"] .secondary-button {
  border-width: 2px;
  font-size: 15px;
}

html[data-theme="senior"] .primary-button {
  min-height: 54px;
  font-size: 16px;
}

html[data-theme="senior"] .upload-zone {
  border-width: 3px;
}

/* =========================================================
   RESPONSIVE — TABLET
   ========================================================= */

@media (max-width: 980px) {
  .resizer-workspace {
    grid-template-columns: 1fr;
  }

  .settings-card {
    position: static;
  }

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

/* =========================================================
   RESPONSIVE — MOBILE
   ========================================================= */

@media (max-width: 640px) {
  .resizer-page {
    width: min(100% - 20px, 1180px);
    padding: 30px 0 55px;
  }

  .tool-hero {
    margin-bottom: 26px;
  }

  .tool-hero h1 {
    font-size: 37px;
    letter-spacing: -1px;
  }

  .tool-hero > p {
    font-size: 14px;
  }

  .workspace-card {
    padding: 18px;
    border-radius: 16px;
  }

  .upload-zone {
    min-height: 270px;
    padding: 25px 15px;
  }

  .input-grid.three,
  .slider-grid,
  .image-meta {
    grid-template-columns: 1fr;
  }

  .adjustment-buttons {
    grid-template-columns: 1fr;
  }

  .result-actions {
    flex-direction: column;
  }

  .steps-grid,
  .features-section {
    grid-template-columns: 1fr;
  }

  .info-section {
    margin-top: 42px;
  }

  .info-heading h2 {
    font-size: 23px;
  }
}

/* =========================================================
   SMALL PHONES
   ========================================================= */

@media (max-width: 390px) {
  .resizer-page {
    width: calc(100% - 14px);
  }

  .workspace-card {
    padding: 15px;
  }

  .tool-hero h1 {
    font-size: 33px;
  }

  .tool-benefits {
    gap: 6px;
  }

  .tool-benefits span {
    font-size: 11px;
    padding: 6px 9px;
  }
}