/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: #e0e0e0;
    background: #0a0e17;
}
a { color: #4fc3f7; text-decoration: none; transition: color 0.2s; }
a:hover { color: #81d4fa; }
ul { list-style: none; }
img { max-width: 100%; }

/* ===== Layout ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 60px 0; }
.section-title { font-size: 1.8rem; font-weight: 700; margin-bottom: 8px; color: #fff; }
.section-desc { color: #9e9e9e; margin-bottom: 32px; max-width: 700px; }

/* ===== Navbar ===== */
.navbar {
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #1a2035;
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0 24px;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}
.brand-icon { color: #4fc3f7; font-size: 1.4rem; }
.brand-sub { color: #4fc3f7; font-weight: 400; font-size: 0.9rem; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }
.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-links > li > a,
.dropdown-toggle {
    display: block;
    padding: 8px 16px;
    color: #b0bec5;
    font-size: 0.9rem;
    border-radius: 6px;
    transition: all 0.2s;
    cursor: pointer;
    background: none;
    border: none;
    font-family: inherit;
}
.nav-links > li > a:hover,
.dropdown-toggle:hover { color: #fff; background: rgba(255,255,255,0.06); }

/* Dropdown */
.nav-dropdown { position: relative; }
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #141b2d;
    border: 1px solid #1e2a45;
    border-radius: 8px;
    min-width: 220px;
    padding: 8px 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.open .dropdown-menu { display: block; }
.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: #b0bec5;
    font-size: 0.875rem;
}
.dropdown-menu a:hover { background: rgba(79,195,247,0.08); color: #4fc3f7; }

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, #0d1b2a 0%, #1b2a4a 50%, #0d1b2a 100%);
    padding: 80px 24px;
    text-align: center;
    border-bottom: 1px solid #1a2035;
}
.hero h1 { font-size: 2.5rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.hero-subtitle { font-size: 1.15rem; color: #90a4ae; max-width: 700px; margin: 0 auto 24px; }
.hero-badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.badge {
    background: rgba(79,195,247,0.12);
    color: #4fc3f7;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(79,195,247,0.25);
}

/* ===== Cards ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}
.card {
    background: #111827;
    border: 1px solid #1e2a45;
    border-radius: 12px;
    padding: 32px 28px;
    transition: transform 0.2s, border-color 0.2s;
}
.card:hover { transform: translateY(-2px); border-color: #4fc3f7; }
.card-icon { font-size: 2rem; margin-bottom: 16px; color: #4fc3f7; }
.card h3 { font-size: 1.2rem; color: #fff; margin-bottom: 8px; }
.card p { color: #9e9e9e; font-size: 0.9rem; margin-bottom: 16px; }
.card-links { display: flex; flex-direction: column; gap: 6px; }
.card-links a { font-size: 0.9rem; padding: 6px 0; border-bottom: 1px solid #1a2035; }
.card-links a:last-child { border-bottom: none; }

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-family: inherit;
    text-align: center;
}
.btn-primary { background: #1976d2; color: #fff; }
.btn-primary:hover { background: #1565c0; color: #fff; }
.btn-outline { background: transparent; color: #4fc3f7; border: 1px solid #4fc3f7; }
.btn-outline:hover { background: rgba(79,195,247,0.1); color: #4fc3f7; }
.btn-danger { background: #c62828; color: #fff; }
.btn-danger:hover { background: #b71c1c; color: #fff; }
.btn-success { background: #2e7d32; color: #fff; }
.btn-success:hover { background: #1b5e20; color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }

/* ===== Steps ===== */
.steps-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 24px; }
.step {
    background: #111827;
    border: 1px solid #1e2a45;
    border-radius: 12px;
    padding: 28px 24px;
}
.step-num {
    width: 40px; height: 40px;
    background: rgba(79,195,247,0.15);
    color: #4fc3f7;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 16px;
}
.step h4 { color: #fff; margin-bottom: 8px; }
.step p { color: #9e9e9e; font-size: 0.9rem; }

/* ===== Data Types Grid ===== */
.data-types-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.data-type {
    background: #111827;
    border: 1px solid #1e2a45;
    border-radius: 8px;
    padding: 20px 24px;
}
.data-type h4 { color: #4fc3f7; font-size: 0.95rem; margin-bottom: 6px; }
.data-type p { color: #9e9e9e; font-size: 0.85rem; }

/* ===== Page Header ===== */
.page-header {
    background: linear-gradient(135deg, #0d1b2a 0%, #162240 100%);
    padding: 48px 24px;
    border-bottom: 1px solid #1a2035;
}
.page-header h1 { font-size: 2rem; color: #fff; margin-bottom: 8px; }
.page-header p { color: #90a4ae; max-width: 600px; }

/* ===== Forms ===== */
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 0.875rem;
    color: #b0bec5;
    margin-bottom: 6px;
    font-weight: 600;
}
.form-control {
    width: 100%;
    padding: 10px 14px;
    background: #0d1117;
    border: 1px solid #1e2a45;
    border-radius: 8px;
    color: #e0e0e0;
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.2s;
}
.form-control:focus { outline: none; border-color: #4fc3f7; }
textarea.form-control { resize: vertical; min-height: 120px; font-family: 'Consolas', 'Monaco', monospace; }
select.form-control { cursor: pointer; }

/* ===== Test Panel ===== */
.test-panel {
    background: #111827;
    border: 1px solid #1e2a45;
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 24px;
}
.test-panel h2 { color: #fff; margin-bottom: 8px; font-size: 1.3rem; }
.test-panel > p { color: #9e9e9e; margin-bottom: 24px; font-size: 0.9rem; }

/* ===== Result Box ===== */
.result-box {
    background: #0d1117;
    border: 1px solid #1e2a45;
    border-radius: 8px;
    padding: 20px;
    margin-top: 16px;
    display: none;
}
.result-box.visible { display: block; }
.result-box.success { border-color: #2e7d32; }
.result-box.error { border-color: #c62828; }
.result-box.info { border-color: #1565c0; }
.result-header {
    font-weight: 700;
    margin-bottom: 8px;
    font-size: 0.95rem;
}
.result-box.success .result-header { color: #66bb6a; }
.result-box.error .result-header { color: #ef5350; }
.result-box.info .result-header { color: #42a5f5; }
.result-body { color: #b0bec5; font-size: 0.875rem; }
.result-body pre {
    background: #0a0e17;
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    margin-top: 8px;
    font-size: 0.8rem;
    color: #90a4ae;
}

/* ===== Sample Data Table ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #1e2a45;
}
.data-table th { color: #4fc3f7; font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; }
.data-table td { color: #b0bec5; }
.data-table tr:hover td { background: rgba(79,195,247,0.04); }
.data-table .file-icon { color: #4fc3f7; margin-right: 8px; }

/* ===== Info Box ===== */
.info-box {
    background: rgba(25, 118, 210, 0.08);
    border: 1px solid rgba(25, 118, 210, 0.3);
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 24px;
    font-size: 0.9rem;
    color: #90caf9;
}
.info-box strong { color: #42a5f5; }

.warning-box {
    background: rgba(255, 152, 0, 0.08);
    border: 1px solid rgba(255, 152, 0, 0.3);
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 24px;
    font-size: 0.9rem;
    color: #ffcc80;
}
.warning-box strong { color: #ffa726; }

/* ===== Two Column Layout ===== */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.three-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }

/* ===== Code Block ===== */
.code-block {
    background: #0d1117;
    border: 1px solid #1e2a45;
    border-radius: 8px;
    padding: 16px 20px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    color: #90a4ae;
    overflow-x: auto;
    white-space: pre;
    position: relative;
}
.code-block .copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(79,195,247,0.15);
    border: 1px solid rgba(79,195,247,0.3);
    color: #4fc3f7;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
}
.code-block .copy-btn:hover { background: rgba(79,195,247,0.25); }

/* ===== Tag / Chip ===== */
.tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}
.tag-blue { background: rgba(79,195,247,0.15); color: #4fc3f7; }
.tag-green { background: rgba(46,125,50,0.2); color: #66bb6a; }
.tag-orange { background: rgba(255,152,0,0.15); color: #ffa726; }
.tag-red { background: rgba(198,40,40,0.15); color: #ef5350; }
.tag-purple { background: rgba(156,39,176,0.15); color: #ce93d8; }

/* ===== Tabs ===== */
.tabs { display: flex; gap: 4px; margin-bottom: 24px; border-bottom: 1px solid #1e2a45; }
.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    color: #9e9e9e;
    font-size: 0.9rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    font-family: inherit;
}
.tab-btn:hover { color: #e0e0e0; }
.tab-btn.active { color: #4fc3f7; border-bottom-color: #4fc3f7; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== Highlight Matches ===== */
.highlight { background: rgba(255, 235, 59, 0.3); color: #fff; padding: 1px 2px; border-radius: 2px; }

/* ===== Footer ===== */
.footer {
    background: #060a12;
    border-top: 1px solid #1a2035;
    padding: 48px 24px 24px;
    margin-top: 60px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}
.footer h4 { color: #fff; font-size: 0.95rem; margin-bottom: 12px; }
.footer p { color: #616161; font-size: 0.85rem; }
.footer ul li { margin-bottom: 6px; }
.footer ul a { color: #757575; font-size: 0.85rem; }
.footer ul a:hover { color: #4fc3f7; }
.footer-bottom {
    border-top: 1px solid #1a2035;
    padding-top: 20px;
    text-align: center;
}
.footer-bottom p { color: #424242; font-size: 0.8rem; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #0a0e17;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid #1e2a45;
    }
    .nav-links.open { display: flex; }
    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: transparent;
        padding-left: 16px;
    }
    .nav-dropdown:hover .dropdown-menu { display: none; }
    .nav-dropdown.open .dropdown-menu { display: block; }
    .hero h1 { font-size: 1.8rem; }
    .two-col, .three-col, .footer-grid { grid-template-columns: 1fr; }
    .card-grid { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr; }
    .data-types-grid { grid-template-columns: 1fr; }
}

/* ===== Utility ===== */
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.text-muted { color: #757575; }
.text-center { text-align: center; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }
.inline-flex { display: inline-flex; align-items: center; gap: 6px; }

/* ===== Spinner ===== */
.spinner {
    display: inline-block;
    width: 18px; height: 18px;
    border: 2px solid rgba(79,195,247,0.3);
    border-top-color: #4fc3f7;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Checkbox / Toggle ===== */
.toggle-group { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.toggle-label {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: #0d1117;
    border: 1px solid #1e2a45;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    color: #b0bec5;
    transition: all 0.2s;
}
.toggle-label:hover { border-color: #4fc3f7; }
.toggle-label input { accent-color: #4fc3f7; }
.toggle-label input:checked + span { color: #4fc3f7; }

/* ===== DP Solution Composer ===== */
.dp-layout { display: grid; grid-template-columns: 320px 1fr; gap: 24px; align-items: start; }
.dp-sidebar { align-self: start; }
.dp-profile-desc { color: #9e9e9e; font-size: 0.85rem; margin-bottom: 16px; }
.dp-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.dp-product {
    background: #0d1117;
    border: 1px solid #1e2a45;
    border-radius: 10px;
    padding: 14px;
    margin-bottom: 12px;
}
.dp-product-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.dp-product-toggle { display: flex; align-items: center; gap: 8px; font-weight: 600; color: #fff; }
.dp-product-desc { color: #9e9e9e; font-size: 0.8rem; margin-bottom: 10px; }
.dp-feature-list { display: grid; gap: 8px; }
.dp-feature {
    display: grid;
    grid-template-columns: 18px 1fr;
    gap: 8px;
    align-items: start;
    border: 1px solid #1e2a45;
    border-radius: 8px;
    padding: 8px 10px;
    background: #0a0e17;
}
.dp-feature input { margin-top: 3px; }
.dp-feature-name { font-size: 0.85rem; font-weight: 600; color: #e0e0e0; }
.dp-feature-desc { grid-column: 2; color: #9e9e9e; font-size: 0.78rem; }
.dp-panel-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.dp-legend { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }

.dp-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}
.dp-summary-card {
    background: #0d1117;
    border: 1px solid #1e2a45;
    border-radius: 10px;
    padding: 14px;
}
.dp-summary-label { color: #9e9e9e; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; }
.dp-summary-value { font-size: 1.4rem; font-weight: 700; color: #fff; }
.dp-summary-sub { color: #757575; font-size: 0.8rem; }

.dp-channel-summary { display: grid; gap: 10px; }
.dp-channel-row { display: grid; grid-template-columns: 120px 1fr 48px; align-items: center; gap: 12px; }
.dp-channel-name { color: #b0bec5; font-size: 0.85rem; }
.dp-channel-bar {
    height: 8px;
    background: #0a0e17;
    border: 1px solid #1e2a45;
    border-radius: 6px;
    overflow: hidden;
}
.dp-channel-bar-fill { height: 100%; background: linear-gradient(90deg, #4fc3f7, #1976d2); }
.dp-channel-pct { color: #9e9e9e; font-size: 0.8rem; text-align: right; }

.dp-matrix-table th,
.dp-matrix-table td { text-align: center; }
.dp-target-cell { text-align: left; }
.dp-target-name { color: #e0e0e0; font-weight: 600; font-size: 0.9rem; }
.dp-target-meta { color: #757575; font-size: 0.75rem; }
.dp-cell {
    cursor: pointer;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
.dp-cell.dp-protect { background: rgba(46,125,50,0.2); color: #a5d6a7; }
.dp-cell.dp-partial { background: rgba(255,152,0,0.15); color: #ffcc80; }
.dp-cell.dp-none { background: rgba(198,40,40,0.15); color: #ef9a9a; }
.dp-cell-active { outline: 2px solid #4fc3f7; }

.dp-status {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.dp-status-protect,
.dp-status-protect-text { background: rgba(46,125,50,0.2); color: #81c784; }
.dp-status-partial,
.dp-status-partial-text { background: rgba(255,152,0,0.15); color: #ffb74d; }
.dp-status-none,
.dp-status-none-text { background: rgba(198,40,40,0.15); color: #ef5350; }

.dp-scenarios { display: grid; gap: 12px; }
.dp-scenario {
    background: #0d1117;
    border: 1px solid #1e2a45;
    border-radius: 10px;
    padding: 12px 14px;
}
.dp-scenario-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.dp-scenario-title { color: #fff; font-weight: 600; font-size: 0.95rem; }
.dp-scenario-meta { color: #9e9e9e; font-size: 0.8rem; margin-top: 4px; }
.dp-scenario-detail { color: #757575; font-size: 0.75rem; margin-top: 8px; }

.dp-why-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.dp-why-title { color: #fff; font-weight: 600; }
.dp-why-list { display: grid; gap: 10px; }
.dp-why-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 6px 12px;
    align-items: center;
    border: 1px solid #1e2a45;
    border-radius: 8px;
    padding: 10px 12px;
    background: #0d1117;
}
.dp-why-feature { color: #e0e0e0; font-weight: 600; }
.dp-why-meta { color: #9e9e9e; font-size: 0.8rem; }

/* ===== Policy Builder ===== */
.pb-mode-toggle { display: flex; gap: 8px; margin-bottom: 20px; }
.pb-parsed-rules { display: grid; gap: 16px; }
.pb-rule-card {
    background: #0d1117;
    border: 1px solid #1e2a45;
    border-radius: 10px;
    padding: 16px;
}
.pb-rule-name { color: #fff; font-weight: 600; font-size: 1rem; margin-bottom: 8px; }
.pb-rule-detail { color: #9e9e9e; font-size: 0.85rem; margin-bottom: 4px; }
.pb-rule-detail strong { color: #b0bec5; }
.pb-rule-detail code { background: #0a0e17; padding: 2px 6px; border-radius: 4px; font-size: 0.8rem; color: #90a4ae; }
.pb-section-header { color: #4fc3f7; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; margin-top: 12px; margin-bottom: 6px; font-weight: 600; }
.pb-label-row { border-bottom: 1px solid #1e2a45; padding-bottom: 8px; margin-bottom: 8px; }
.pb-label-row:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

/* Classification Labels */
.dp-class-desc { color: #9e9e9e; font-size: 0.8rem; margin-bottom: 10px; }
.dp-class-label-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.dp-class-support-title { color: #4fc3f7; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; margin-bottom: 8px; }
.dp-class-product-row { background: #0a0e17; border: 1px solid #1e2a45; border-radius: 8px; padding: 10px 12px; margin-bottom: 6px; }
.dp-class-product-row:last-child { margin-bottom: 0; }
.dp-class-product-name { color: #e0e0e0; font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; }
.dp-class-product-note { color: #9e9e9e; font-size: 0.78rem; line-height: 1.4; }
.dp-class-product-dim { opacity: 0.45; }

@media (max-width: 900px) {
    .dp-layout { grid-template-columns: 1fr; }
    .dp-channel-row { grid-template-columns: 1fr; gap: 6px; }
}