@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');

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

:root {
  --bg: #ffffff;
  --bg2: #f8f8f6;
  --bg3: #f1f1ee;
  --text1: #111110;
  --text2: #52524e;
  --text3: #a0a09a;
  --border: #e4e4e0;
  --border2: #d0d0ca;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow: 0 1px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
}

html { scroll-behavior: smooth; }
body { font-family: 'Pretendard', -apple-system, sans-serif; background: var(--bg); color: var(--text1); line-height: 1.5; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 32px; height: 58px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 800; color: var(--text1); letter-spacing: -0.03em; }
.nav-logo-icon { width: 32px; height: 32px; border-radius: 9px; background: var(--text1); display: flex; align-items: center; justify-content: center; }
.nav-logo-icon svg { width: 18px; height: 18px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a { font-size: 13px; color: var(--text2); padding: 6px 12px; border-radius: 8px; transition: all 0.15s; }
.nav-links a:hover, .nav-links a.active { background: var(--bg2); color: var(--text1); }

/* CONTAINER */
.container { max-width: 1100px; margin: 0 auto; padding: 0 32px; }
.container-sm { max-width: 760px; margin: 0 auto; padding: 0 32px; }

/* HERO */
.hero { padding: 64px 0 48px; text-align: center; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 6px; background: var(--bg2); border: 1px solid var(--border); border-radius: 100px; padding: 4px 14px; font-size: 12px; font-weight: 600; color: var(--text2); margin-bottom: 20px; }
.hero h1 { font-size: 52px; font-weight: 900; letter-spacing: -0.04em; line-height: 1.08; color: var(--text1); margin-bottom: 16px; }
.hero h1 span { color: var(--text3); }
.hero p { font-size: 17px; color: var(--text2); max-width: 480px; margin: 0 auto 32px; line-height: 1.7; }

/* TOOL GRID */
.section-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text3); margin-bottom: 14px; }
.tool-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 48px; }
.tool-card {
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 20px; display: block;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  background: var(--bg); cursor: pointer;
}
.tool-card:hover { border-color: var(--text3); box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.tool-card-icon { width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 14px; }
.tool-card-from { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text3); margin-bottom: 4px; }
.tool-card-name { font-size: 15px; font-weight: 800; color: var(--text1); margin-bottom: 6px; letter-spacing: -0.02em; }
.tool-card-desc { font-size: 12px; color: var(--text2); line-height: 1.6; }
.tool-card-arrow { font-size: 12px; color: var(--text3); margin-top: 14px; display: block; }

/* COLOR THEMES for cards */
.c-orange .tool-card-icon { background: #fff3e8; }
.c-blue .tool-card-icon { background: #e8f0ff; }
.c-green .tool-card-icon { background: #e8f8ef; }
.c-purple .tool-card-icon { background: #f0e8ff; }
.c-pink .tool-card-icon { background: #ffe8f3; }
.c-teal .tool-card-icon { background: #e8f8f8; }

/* UPLOADER */
.uploader {
  border: 2px dashed var(--border2); border-radius: var(--radius-xl);
  padding: 56px 32px; text-align: center;
  transition: all 0.2s; cursor: pointer; background: var(--bg2);
  margin-bottom: 24px; position: relative;
}
.uploader:hover, .uploader.drag-over { border-color: var(--text1); background: var(--bg3); }
.uploader input { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.uploader-icon { font-size: 40px; margin-bottom: 14px; }
.uploader-title { font-size: 18px; font-weight: 800; color: var(--text1); margin-bottom: 6px; letter-spacing: -0.02em; }
.uploader-desc { font-size: 13px; color: var(--text2); margin-bottom: 16px; }
.uploader-btn { display: inline-flex; align-items: center; gap: 8px; background: var(--text1); color: #fff; padding: 10px 22px; border-radius: 100px; font-size: 13px; font-weight: 700; cursor: pointer; transition: opacity 0.15s; }
.uploader-btn:hover { opacity: 0.8; }
.uploader-formats { font-size: 11px; color: var(--text3); margin-top: 12px; }

/* CONVERTER LAYOUT */
.converter-page { padding: 40px 0; }
.conv-header { margin-bottom: 32px; }
.conv-breadcrumb { font-size: 12px; color: var(--text3); margin-bottom: 12px; }
.conv-breadcrumb a { color: var(--text3); } .conv-breadcrumb a:hover { color: var(--text1); }
.conv-title { font-size: 32px; font-weight: 900; letter-spacing: -0.03em; margin-bottom: 6px; }
.conv-desc { font-size: 15px; color: var(--text2); }

/* FILE PREVIEW GRID */
.files-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-bottom: 24px; }
.file-card { border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: var(--bg); }
.file-card-thumb { width: 100%; height: 130px; object-fit: cover; background: var(--bg2); display: flex; align-items: center; justify-content: center; font-size: 32px; }
.file-card-thumb img { width: 100%; height: 130px; object-fit: cover; }
.file-card-info { padding: 10px 12px; }
.file-card-name { font-size: 12px; font-weight: 600; color: var(--text1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 4px; }
.file-card-size { font-size: 11px; color: var(--text3); }
.file-card-status { font-size: 11px; color: #059669; font-weight: 600; }
.file-card-remove { float: right; background: none; border: none; cursor: pointer; color: var(--text3); font-size: 14px; padding: 0; line-height: 1; }
.file-card-remove:hover { color: var(--text1); }

/* SETTINGS PANEL */
.settings-panel { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; margin-bottom: 20px; }
.settings-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.setting-item { display: flex; flex-direction: column; gap: 6px; }
.setting-label { font-size: 11px; font-weight: 700; color: var(--text2); text-transform: uppercase; letter-spacing: 0.06em; }
.setting-input, .setting-select {
  padding: 8px 12px; border: 1px solid var(--border2); border-radius: 8px;
  font-size: 13px; font-family: inherit; outline: none; background: var(--bg); color: var(--text1);
  transition: border-color 0.15s;
}
.setting-input:focus, .setting-select:focus { border-color: var(--text1); }
.range-wrap { display: flex; align-items: center; gap: 10px; }
.range-wrap input[type=range] { width: 140px; accent-color: var(--text1); }
.range-val { font-size: 13px; font-weight: 700; min-width: 32px; text-align: center; background: var(--bg3); padding: 4px 8px; border-radius: 6px; }

/* CONVERT BUTTON */
.convert-btn {
  width: 100%; padding: 16px; border-radius: var(--radius-lg);
  background: var(--text1); color: #fff; font-size: 15px; font-weight: 800;
  border: none; cursor: pointer; font-family: inherit; letter-spacing: -0.01em;
  transition: opacity 0.15s; display: flex; align-items: center; justify-content: center; gap: 10px;
  margin-bottom: 12px;
}
.convert-btn:hover { opacity: 0.85; }
.convert-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* PROGRESS */
.progress-wrap { margin-bottom: 20px; }
.progress-bar { height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--text1); border-radius: 2px; transition: width 0.3s; }
.progress-text { font-size: 12px; color: var(--text2); margin-top: 6px; }

/* RESULTS */
.results-section { margin-top: 24px; }
.result-card {
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; margin-bottom: 12px; background: var(--bg);
}
.result-card-header { padding: 14px 16px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--border); }
.result-preview { width: 48px; height: 48px; border-radius: 8px; object-fit: cover; background: var(--bg2); flex-shrink: 0; }
.result-name { font-size: 13px; font-weight: 700; color: var(--text1); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.result-meta { font-size: 11px; color: var(--text3); }
.result-size-change { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 100px; }
.size-down { background: #e8f8ef; color: #065f46; }
.size-up { background: #fff3e8; color: #9a3412; }
.result-download { background: var(--text1); color: #fff; border: none; padding: 8px 18px; border-radius: 8px; font-size: 12px; font-weight: 700; cursor: pointer; font-family: inherit; transition: opacity 0.15s; display: flex; align-items: center; gap: 6px; }
.result-download:hover { opacity: 0.8; }
.download-all-btn {
  width: 100%; padding: 14px; border-radius: var(--radius-lg);
  background: var(--text1); color: #fff; font-size: 14px; font-weight: 800;
  border: none; cursor: pointer; font-family: inherit;
  transition: opacity 0.15s; display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-top: 8px;
}
.download-all-btn:hover { opacity: 0.85; }

/* RELATED TOOLS */
.related-section { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px; }
.related-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; display: block; transition: border-color 0.15s; }
.related-card:hover { border-color: var(--text2); }
.related-card-name { font-size: 13px; font-weight: 700; color: var(--text1); margin-bottom: 3px; }
.related-card-desc { font-size: 11px; color: var(--text2); }

/* AD */
.ad-slot { background: var(--bg2); border: 1px dashed var(--border2); border-radius: var(--radius); padding: 14px; text-align: center; margin: 24px 0; }
.ad-slot p { font-size: 11px; color: var(--text3); }

/* FOOTER */
.footer { border-top: 1px solid var(--border); padding: 28px 32px; display: flex; align-items: center; justify-content: space-between; margin-top: 64px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 12px; color: var(--text3); }
.footer-links a:hover { color: var(--text2); }
.footer-copy { font-size: 12px; color: var(--text3); }

/* BADGE */
.badge { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 100px; font-size: 11px; font-weight: 700; }
.badge-free { background: #e8f8ef; color: #065f46; }

/* FEATURE ROW */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 40px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin: 0 0 48px; }
.feature-item { display: flex; gap: 14px; }
.feature-icon { width: 36px; height: 36px; background: var(--bg2); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.feature-name { font-size: 13px; font-weight: 700; color: var(--text1); margin-bottom: 3px; }
.feature-desc { font-size: 12px; color: var(--text2); line-height: 1.6; }

@media (max-width: 900px) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 36px; }
  .features { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
  .container, .container-sm { padding: 0 16px; }
  .nav { padding: 0 16px; }
  .hero { padding: 40px 0 32px; }
  .hero h1 { font-size: 30px; }
  .related-grid { grid-template-columns: 1fr; }
  .files-grid { grid-template-columns: repeat(2, 1fr); }
}