:root {
  --bg: #081225;
  --bg-soft: #0a1730;
  --panel: #13233d;
  --card: #162742;
  --surface: #09182e;
  --border: #1f4166;
  --border-soft: #315b8a;
  --text: #e5e7eb;
  --text-soft: #cbd5e1;
  --text-muted: #9bb0c8;
  --heading: #ffffff;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --accent-text: #081225;
  --tag-bg: #0d1d34;
  --link: #8fdcff;
}

body.light-mode {
  --bg: #eef4fb;
  --bg-soft: #e5eef8;
  --panel: #ffffff;
  --card: #f8fbff;
  --surface: #f3f8fd;
  --border: #c9dbec;
  --border-soft: #b2c9dd;
  --text: #16304f;
  --text-soft: #325272;
  --text-muted: #587897;
  --heading: #0f2a47;
  --accent: #0ea5e9;
  --accent-strong: #0284c7;
  --accent-text: #ffffff;
  --tag-bg: #e8f4fb;
  --link: #0284c7;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background 0.25s, color 0.25s;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: var(--accent-text);
  font-weight: 800;
  font-size: 1.2rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-name {
  color: var(--heading);
  font-size: 1.2rem;
  font-weight: 700;
}

.brand-sub {
  color: var(--link);
  font-size: 0.8rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--text-soft);
  transition: 0.25s;
}

.nav a:hover {
  color: var(--accent);
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 1rem;
}

.hero {
  padding: 90px 0 70px;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: var(--heading);
  margin-bottom: 18px;
}

.hero p {
  max-width: 760px;
  margin: 0 auto 28px;
  color: var(--text-soft);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  text-decoration: none;
  padding: 14px 24px;
  border-radius: 12px;
  font-weight: 700;
  transition: 0.25s;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}

.btn-primary:hover {
  background: var(--accent-strong);
}

.btn-secondary {
  border: 1px solid var(--accent);
  color: var(--accent);
  background: transparent;
}

.btn-secondary:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.section {
  padding: 56px 0;
}

.section h2 {
  color: var(--heading);
  text-align: center;
  margin-bottom: 22px;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}

.ad-strip-section {
  padding: 20px 0 0;
}

.ad-strip,
.side-ad {
  background: var(--panel);
  border: 1px dashed var(--border-soft);
  border-radius: 18px;
  padding: 18px;
  text-align: center;
  color: var(--text-muted);
}

.ad-label {
  display: inline-block;
  margin-bottom: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--link);
  font-size: 0.8rem;
  font-weight: 700;
}

.category-tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.category-tab {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
  transition: 0.25s;
}

.category-tab:hover,
.category-tab.active {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

.section-top {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-input {
  width: 100%;
  max-width: 320px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 1rem;
}

.tools-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 18px;
  align-items: start;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: 16px;
}

.tool-card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 18px;
  padding: 18px;
  text-align: left;
  cursor: pointer;
  transition: 0.25s;
  color: inherit;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.tool-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}

.tool-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--link);
  margin-bottom: 10px;
}

.tool-icon {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.tool-card h3 {
  font-size: 1.05rem;
  color: var(--accent);
  margin-bottom: 10px;
}

.tool-card p {
  color: var(--text-soft);
  font-size: 0.94rem;
}

.workspace-section {
  padding-top: 30px;
}

.workspace-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
}

.workspace-placeholder {
  text-align: center;
  padding: 40px 20px;
}

.workspace-placeholder h3 {
  color: var(--heading);
  margin-bottom: 10px;
  font-size: 1.5rem;
}

.workspace-placeholder p {
  color: var(--text-muted);
}

.tool-panel {
  animation: fadeIn 0.2s ease;
}

.panel-head {
  margin-bottom: 20px;
}

.panel-head h3 {
  color: var(--heading);
  font-size: 1.7rem;
  margin-bottom: 8px;
}

.panel-head p {
  color: var(--text-soft);
}

.form-group {
  margin-bottom: 18px;
}

.form-inline {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.form-label {
  display: block;
  margin-bottom: 10px;
  font-weight: 700;
  color: var(--heading);
}

.text-input,
.file-input,
.select-input,
.small-input {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 14px;
  padding: 14px;
  font-size: 1rem;
}

.text-input {
  min-height: 120px;
  resize: vertical;
}

.small-input {
  min-width: 200px;
}

.full-width-input {
  width: 100%;
}

.range-input {
  width: 100%;
}

.range-value {
  color: var(--text-muted);
  margin-top: 8px;
}

.checkbox-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.actions-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.action-btn,
.secondary-btn,
.download-item {
  border: none;
  border-radius: 12px;
  padding: 13px 20px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: 0.25s;
}

.action-btn {
  background: var(--accent);
  color: var(--accent-text);
}

.action-btn:hover {
  background: var(--accent-strong);
}

.secondary-btn,
.download-item {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.secondary-btn:hover,
.download-item:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.result-box,
.preview-box,
.coming-soon-box,
.download-list,
.info-card {
  margin-top: 20px;
  background: var(--surface);
  border: 1px dashed var(--border-soft);
  border-radius: 16px;
  padding: 20px;
}

.result-box {
  text-align: center;
}

.result-box img,
.preview-box img {
  display: block;
  max-width: 100%;
  max-height: 320px;
  margin: 0 auto 14px;
  border-radius: 12px;
}

.file-info {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 10px;
}

.download-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.dropzone {
  border: 2px dashed var(--border-soft);
  background: var(--surface);
  border-radius: 16px;
  padding: 22px;
  text-align: center;
  margin-bottom: 18px;
  transition: 0.2s;
}

.dropzone p {
  color: var(--heading);
  font-weight: 700;
}

.dropzone span {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.dropzone.dragover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
}

.info-section {
  padding-top: 30px;
}

.info-card {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  background: var(--panel);
  border: 1px solid var(--border);
}

.info-card p {
  color: var(--text-soft);
  margin-bottom: 14px;
}

.info-card p:last-child {
  margin-bottom: 0;
}

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

.contact-email {
  margin-top: 10px;
  font-size: 1.15rem;
  font-weight: 700;
}

.contact-email a {
  color: var(--accent);
  text-decoration: none;
}

.contact-email a:hover {
  text-decoration: underline;
}

.about-text {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-soft);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
  text-align: center;
  padding: 24px 0;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.footer-links a {
  color: var(--link);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

canvas.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .tools-layout {
    grid-template-columns: 1fr;
  }

  .side-ad {
    order: -1;
  }
}

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 12px;
  }

  .header-actions {
    justify-content: center;
  }

  .nav {
    justify-content: center;
  }

  .section-top {
    flex-direction: column;
    align-items: stretch;
  }

  .search-input {
    max-width: 100%;
  }

  .workspace-card {
    padding: 18px;
  }

  .form-inline {
    flex-direction: column;
  }

  .small-input {
    min-width: 100%;
  }
}