:root {
    --bg: #f6f8fc;
    --bg-soft: #ffffff;
    --bg-accent: #eef4ff;
    --card: #ffffff;
    --card-soft: #f9fbff;
    --border: #dbe4f0;
    --border-strong: #c9d6e8;
    --text: #1f2a37;
    --text-soft: #5b6b7f;
    --heading: #142033;
    --accent: #4f8cff;
    --accent-hover: #3a78eb;
    --accent-soft: #eaf2ff;
    --success: #1ea97c;
    --shadow: 0 12px 30px rgba(31, 42, 55, 0.08);
    --shadow-soft: 0 8px 18px rgba(31, 42, 55, 0.05);
    --radius: 20px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: Inter, Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(79, 140, 255, 0.08), transparent 28%),
        linear-gradient(180deg, #fbfdff 0%, #f4f7fb 100%);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

/* HEADER */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(219, 228, 240, 0.9);
}

.header-inner,
.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 74px;
}

.brand {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.2px;
    color: var(--heading);
}

.nav {
    display: flex;
    gap: 20px;
}

.nav a {
    color: var(--text-soft);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* HERO */

.hero {
    padding: 56px 0 26px;
}

.hero-large {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr;
    gap: 24px;
    align-items: stretch;
}

.hero-content h1,
.tool-hero h1 {
    margin: 0 0 12px;
    font-size: clamp(2.3rem, 5vw, 4rem);
    line-height: 1.05;
    color: var(--heading);
}

.hero-content p,
.tool-hero p,
.section-header p,
.sidebar-box p,
.card-surface p,
.tool-card p,
.category-card p,
.footer-muted,
.breadcrumb {
    color: var(--text-soft);
}

.hero-badge {
    display: inline-block;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--accent-soft);
    border: 1px solid #d5e5ff;
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.link-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* BUTTONS */

.primary-btn,
.secondary-btn {
    border: 0;
    padding: 12px 16px;
    border-radius: 14px;
    cursor: pointer;
    font-weight: 700;
    transition: all 0.18s ease;
    font-size: 0.95rem;
}

.primary-btn:hover,
.secondary-btn:hover {
    transform: translateY(-1px);
}

.primary-btn {
    background: var(--accent);
    color: white;
    box-shadow: 0 10px 22px rgba(79, 140, 255, 0.18);
}

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

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

.secondary-btn:hover {
    background: #f9fbff;
}

/* SURFACES */

.card-glow,
.card-surface,
.category-card,
.sidebar-box,
.sidebar-ad,
.ad-banner,
.tool-panel {
    border-radius: 22px;
    border: 1px solid var(--border);
    background: var(--card);
    box-shadow: var(--shadow);
}

.card-glow {
    padding: 24px;
    display: grid;
    gap: 16px;
    align-content: center;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.card-surface {
    padding: 24px;
    margin-bottom: 24px
}

.mini-stat {
    padding: 18px;
    border-radius: 16px;
    background: var(--card-soft);
    border: 1px solid var(--border);
}

.mini-stat strong {
    display: block;
    font-size: 1.4rem;
    margin-bottom: 6px;
    color: var(--heading);
}

.mini-stat span {
    color: var(--text-soft);
}

.ad-banner {
    margin: 22px 0 34px;
    min-height: 140px;
    display: grid;
    place-items: center;
    color: var(--text-soft);
    border-style: dashed;
    background: #fcfdff;
}

.section-block {
    margin: 38px 0;
}

.section-header {
    margin-bottom: 18px;
}

.section-header h2,
.card-surface h2 {
    margin: 0 0 8px;
    font-size: 1.7rem;
    color: var(--heading);
}

/* CATEGORY GRID */

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
}

.category-card {
    padding: 22px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 30px rgba(31, 42, 55, 0.09);
}

.category-icon {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: var(--accent-soft);
    margin-bottom: 14px;
    font-size: 1.1rem;
}

.category-card h3 {
    margin: 0 0 8px;
    color: var(--heading);
}

.category-link {
    display: inline-block;
    margin-top: 12px;
    color: var(--accent);
    font-weight: 700;
}

/* TOOLS GRID */

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 18px;
}

.small-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.tool-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 20px;
    border-radius: 20px;
    background: white;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.tool-card:hover {
    transform: translateY(-4px);
    border-color: #c8daf8;
    box-shadow: 0 18px 28px rgba(31, 42, 55, 0.08);
}

.compact-card {
    padding: 16px;
}

.tool-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: var(--accent-soft);
    color: var(--accent);
    flex-shrink: 0;
    font-size: 1.05rem;
}

.tool-content {
    flex: 1;
}

.tool-category {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 8px;
    font-weight: 700;
}

.tool-content h3 {
    margin: 0 0 8px;
    font-size: 1.05rem;
    color: var(--heading);
}

.tool-content p {
    margin: 0;
    line-height: 1.5;
    font-size: 0.95rem;
}

.tool-arrow {
    color: #8ca0b8;
    font-size: 1.15rem;
    align-self: center;
}

/* LAYOUT */

.content-layout,
.tool-page-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
    margin: 36px 0 50px;
}

.sidebar-box {
    padding: 20px;
    margin-bottom: 18px;
}

.sidebar-box h3 {
    margin-top: 0;
    color: var(--heading);
}

.sidebar-list {
    margin: 0;
    padding-left: 18px;
    color: var(--text-soft);
}

.sidebar-list li {
    margin-bottom: 8px;
}

.sidebar-ad {
    min-height: 250px;
    display: grid;
    place-items: center;
    color: var(--text-soft);
    border-style: dashed;
    margin-bottom: 18px;
    background: #fcfdff;
}

.sidebar-ad.tall {
    min-height: 420px;
}

.breadcrumb {
    padding-top: 22px;
    font-size: 0.95rem;
}

/* TOOL PAGE */

.tool-hero {
    margin-bottom: 8px;
}

.tool-panel {
    padding: 24px;
    margin-bottom: 24px;
}

.panel-column {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.panel-column label {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--heading);
}

.tool-textarea,
.tool-output {
    width: 100%;
    min-height: 220px;
    padding: 16px 18px;
    border-radius: 18px;
    border: 1px solid var(--border-strong);
    background: #ffffff;
    color: var(--text);
    font-size: 0.98rem;
    line-height: 1.6;
    outline: none;
}

.tool-textarea {
    resize: vertical;
}

.tool-textarea:focus {
    border-color: #9ec0ff;
    box-shadow: 0 0 0 4px rgba(79, 140, 255, 0.12);
}

.tool-output {
    white-space: pre-wrap;
    word-break: break-word;
    margin: 0;
    background: #fbfdff;
}

.panel-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding: 16px 0;
}

/* FOOTER */

.site-footer {
    border-top: 1px solid var(--border);
    margin-top: 30px;
    color: var(--text-soft);
    background: rgba(255, 255, 255, 0.55);
}

/* RESPONSIVE */

@media (max-width: 960px) {
    .hero-large,
    .content-layout,
    .tool-page-layout {
        grid-template-columns: 1fr;
    }

    .sidebar-ad.tall {
        min-height: 250px;
    }
}

@media (max-width: 768px) {
    .header-inner,
    .footer-inner {
        min-height: 64px;
    }

    .nav {
        gap: 12px;
        font-size: 0.95rem;
    }

    .hero-actions,
    .panel-actions {
        flex-direction: column;
    }

    .primary-btn,
    .secondary-btn {
        width: 100%;
    }
}

.site-footer {
    margin-top: 56px;
    padding-top: 34px;
    background: linear-gradient(180deg, #f4f8fd 0%, #edf3fa 100%);
    border-top: 1px solid var(--border);
}

.footer-top {
    padding-bottom: 20px;
}

.footer-brand-block {
    max-width: 760px;
}

.footer-logo {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--heading);
    margin-bottom: 12px;
}

.footer-brand-block p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.7;
}

.footer-tools-directory {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 28px;
    padding: 26px 0 30px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.footer-category-block h3 {
    margin: 0 0 14px;
    font-size: 1rem;
}

.footer-category-block h3 a {
    color: var(--heading);
}

.footer-category-block h3 a:hover {
    color: var(--accent);
}

.footer-tool-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-tool-links li {
    margin-bottom: 10px;
}

.footer-tool-links a {
    color: var(--text-soft);
    font-size: 0.95rem;
    line-height: 1.45;
    transition: color 0.2s ease;
}

.footer-tool-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding: 18px 0 28px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-bottom p {
    margin: 0;
    color: var(--text-soft);
    font-size: 0.94rem;
}

.page-content {
    padding-top: 20px;
    padding-bottom: 20px;
}

.legal-page {
    max-width: 900px;
    line-height: 1.75;
}

.legal-page h1,
.legal-page h2 {
    color: var(--heading);
}

.legal-page h1 {
    margin-top: 0;
    margin-bottom: 18px;
}

.legal-page h2 {
    margin-top: 28px;
    margin-bottom: 10px;
}

.legal-page p,
.legal-page li {
    color: var(--text-soft);
}

.footer-legal-links {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.footer-legal-links a {
    color: var(--text-soft);
    font-size: 0.95rem;
}

.footer-legal-links a:hover {
    color: var(--accent);
}

.ad-box {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed #cdd7e3;
    background: #f7fbff;
    color: #7c8aa0;
    font-size: 0.9rem;
    border-radius: 12px;
}

.ad-banner {
    height: 160px;
    margin: 28px 0;
}

.ad-sidebar {
    height: 250px;
    margin-bottom: 20px;
}

.ad-content {
    height: 90px;
    margin: 28px 0;
}

.site-logo {
    height: 60px;
    display: block;
}

.brand {
    display: flex;
    align-items: center;
}

.tools-search-box {
    margin: 0 0 20px;
}

.tools-search-input {
    width: 100%;
    max-width: 520px;
    padding: 14px 16px;
    border: 1px solid var(--border-strong);
    border-radius: 14px;
    background: #ffffff;
    color: var(--text);
    font-size: 1rem;
    outline: none;
    box-shadow: var(--shadow-soft);
}

.tools-search-input:focus {
    border-color: #9ec0ff;
    box-shadow: 0 0 0 4px rgba(79, 140, 255, 0.12);
}

.tools-toolbar {
    display: flex;
    gap: 14px;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 22px;
    flex-wrap: wrap;
}

.tools-search-box-wide {
    flex: 1 1 420px;
}

.tools-filter-box {
    flex: 0 0 240px;
}

.tools-filter-select {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-strong);
    border-radius: 14px;
    background: #ffffff;
    color: var(--text);
    font-size: 1rem;
    outline: none;
    box-shadow: var(--shadow-soft);
}

.tools-filter-select:focus {
    border-color: #9ec0ff;
    box-shadow: 0 0 0 4px rgba(79, 140, 255, 0.12);
}