/* Global Reset & Variables */
:root {
    --color-bg: #0c0f1a;
    --color-surface: rgba(18, 21, 34, 0.85);
    --color-card: rgba(18, 21, 34, 0.75);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-strong: rgba(255, 255, 255, 0.12);
    --color-text: #f5f7ff;
    --color-muted: rgba(245, 247, 255, 0.7);
    --color-accent: #4fd1c5;
    --color-accent-strong: #38b2ac;
    --color-highlight: rgba(79, 209, 197, 0.15);
    --shadow-soft: 0 24px 64px rgba(8, 12, 42, 0.45);
    --shadow-card: 0 18px 40px rgba(8, 12, 42, 0.35);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --container-width: min(1120px, 92vw);
    --grid-gap: clamp(1.5rem, 4vw, 2.5rem);
    --transition-base: 180ms ease;
    --transition-slow: 320ms cubic-bezier(0.16, 1, 0.3, 1);
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}
.page-background {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 18% 18%, rgba(81, 99, 200, 0.26), transparent 62%),
        radial-gradient(circle at 78% 12%, rgba(79, 209, 197, 0.24), transparent 58%),
        radial-gradient(circle at 22% 82%, rgba(255, 255, 255, 0.05), transparent 66%),
        radial-gradient(circle at 88% 84%, rgba(41, 53, 105, 0.22), transparent 68%),
        linear-gradient(160deg, rgba(45, 55, 98, 0.2), rgba(2, 6, 23, 0.4));
    z-index: -2;
}

.page-gradient-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(2, 6, 23, 0.75) 0%, rgba(2, 6, 23, 0.07) 45%, rgba(5, 10, 28, 0.85) 100%);
    z-index: -1;
}

.page-noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        radial-gradient(circle, rgba(255, 255, 255, 0.04) 0, transparent 60%),
        repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.012) 0, rgba(255, 255, 255, 0.012) 1px, transparent 1px, transparent 2px);
    mix-blend-mode: soft-light;
    opacity: 0.45;
    z-index: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.container {
    width: var(--container-width);
    margin: 0 auto;
}

img,
picture,
video,
canvas,
svg {
    max-width: 100%;
    display: block;
}

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

button {
    font: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}

input,
textarea,
select {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
}

/* Header & Navigation */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(6, 8, 22, 0.8);
    backdrop-filter: blur(22px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: clamp(1rem, 2.5vw, 1.6rem) 0;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-mark {
    font-size: 1.4rem;
}

.logo-text {
    letter-spacing: 0.04em;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
}

.nav-toggle-bar {
    width: 26px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-base);
}

.primary-nav {
    display: flex;
    align-items: center;
    gap: clamp(1.5rem, 4vw, 2.75rem);
    list-style: none;
}

.primary-nav a {
    position: relative;
    font-size: 0.92rem;
    letter-spacing: 0.02em;
    transition: var(--transition-base);
    padding-block: 0.25rem;
}

.primary-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -0.55rem;
    width: 100%;
    height: 2px;
    border-radius: 999px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: var(--transition-slow);
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
    transform: scaleX(1);
    transform-origin: left;
}

.site-actions {
    margin-left: auto;
}

/* Hero */
.hero {
    position: relative;
    padding: clamp(5rem, 12vw, 7.5rem) 0 clamp(3rem, 10vw, 4.5rem);
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at 20% 20%, rgba(79, 209, 197, 0.28), transparent 58%), radial-gradient(circle at 70% 10%, rgba(81, 99, 200, 0.35), transparent 52%);
    opacity: 0.85;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    gap: clamp(1.5rem, 4vw, 2.5rem);
    text-align: center;
    max-width: 680px;
}

.headline-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.4rem;
    border-radius: 999px;
    background: var(--color-card);
    border: 1px solid rgba(79, 209, 197, 0.32);
    color: var(--color-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero h1 {
    font-size: clamp(2.75rem, 6vw, 4.4rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero p {
    color: var(--color-muted);
    font-size: clamp(1.05rem, 2.2vw, 1.2rem);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1.1rem;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.8rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--color-accent), #60a5fa);
    color: #050814;
    font-weight: 600;
    box-shadow: 0 18px 32px rgba(79, 209, 197, 0.28);
    transition: var(--transition-slow);
}

.cta-button:hover,
.cta-button:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 20px 38px rgba(79, 209, 197, 0.34);
}

.secondary-link {
    padding: 0.85rem 1.3rem;
    border-radius: 999px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    color: var(--color-muted);
    transition: var(--transition-base);
}

.secondary-link:hover,
.secondary-link:focus-visible {
    color: var(--color-text);
    border-color: rgba(79, 209, 197, 0.36);
}

.search-panel {
    margin: 0 auto;
    padding: clamp(1.4rem, 4vw, 1.9rem);
    border-radius: var(--radius-lg);
    background: rgba(10, 13, 26, 0.82);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-card);
    display: grid;
    gap: 0.85rem;
    text-align: left;
}

.search-field {
    position: relative;
}

#tool-search {
    width: 100%;
    padding: 0.85rem 1rem 0.85rem 2.8rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-base);
}

#tool-search:focus {
    outline: none;
    border-color: rgba(79, 209, 197, 0.4);
    box-shadow: 0 0 0 4px rgba(79, 209, 197, 0.16);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.7;
}

.search-results {
    font-size: 0.9rem;
    color: rgba(245, 247, 255, 0.62);
}

/* Catalog */
.catalog {
    padding: clamp(4rem, 9vw, 5.5rem) 0;
}

.section-header {
    display: grid;
    gap: 0.65rem;
    text-align: center;
    margin-bottom: clamp(2.5rem, 6vw, 3.5rem);
}

.section-header h2 {
    font-size: clamp(2rem, 4.5vw, 3rem);
    letter-spacing: -0.015em;
}

.section-header p {
    color: var(--color-muted);
    max-width: 640px;
    margin: 0 auto;
}

.comparison-highlight {
    position: relative;
    margin: clamp(2rem, 5vw, 2.8rem) auto clamp(2.8rem, 6vw, 3.4rem);
    padding: clamp(1.8rem, 4vw, 2.6rem);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(79, 209, 197, 0.12), rgba(96, 165, 250, 0.1));
    border: 1px solid rgba(79, 209, 197, 0.28);
    box-shadow: 0 22px 50px rgba(8, 12, 42, 0.35);
    overflow: hidden;
}

.comparison-highlight::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 18% 24%, rgba(79, 209, 197, 0.25), transparent 58%),
                radial-gradient(circle at 82% 18%, rgba(96, 165, 250, 0.22), transparent 60%);
    opacity: 0.7;
    pointer-events: none;
}

.comparison-highlight__content {
    position: relative;
    z-index: 1;
    display: grid;
    gap: clamp(0.85rem, 3vw, 1.3rem);
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.comparison-highlight__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.15rem;
    border-radius: 999px;
    background: rgba(6, 10, 28, 0.68);
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: rgba(245, 247, 255, 0.85);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.comparison-highlight__content h3 {
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    letter-spacing: -0.01em;
}

.comparison-highlight__content p {
    color: rgba(245, 247, 255, 0.82);
    font-size: clamp(0.98rem, 2.2vw, 1.06rem);
    line-height: 1.7;
}

.comparison-highlight__actions {
    display: grid;
    gap: 0.9rem;
    justify-items: center;
}

.comparison-highlight__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.75rem 1.6rem;
    border-radius: 999px;
    background: rgba(245, 247, 255, 0.92);
    color: #050814;
    font-weight: 600;
    transition: var(--transition-slow);
    box-shadow: 0 16px 28px rgba(79, 209, 197, 0.28);
}

.comparison-highlight__cta:hover,
.comparison-highlight__cta:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(79, 209, 197, 0.35);
}

.comparison-highlight__links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(245, 247, 255, 0.7);
    font-size: 0.9rem;
}

.comparison-highlight__link {
    color: rgba(245, 247, 255, 0.85);
    border-bottom: 1px dotted rgba(245, 247, 255, 0.28);
    padding-bottom: 2px;
    transition: var(--transition-base);
}

.comparison-highlight__link:hover,
.comparison-highlight__link:focus-visible {
    color: var(--color-text);
    border-bottom-color: var(--color-text);
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: clamp(1.2rem, 3vw, 1.8rem);
}

.tool-grid.is-empty::after {
    content: attr(data-empty-message);
    grid-column: 1 / -1;
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius-md);
    border: 1px dashed rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.02);
}

.tool-card {
    display: grid;
    gap: 0.6rem;
    padding: clamp(1.4rem, 3vw, 1.8rem);
    border-radius: var(--radius-md);
    background: radial-gradient(circle at top, rgba(79, 209, 197, 0.12), transparent 75%), var(--color-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform var(--transition-slow), box-shadow var(--transition-slow), border var(--transition-base);
}

.tool-card.is-hidden {
    display: none;
}

.tool-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

.tool-card p {
    font-size: 0.92rem;
    color: rgba(245, 247, 255, 0.68);
}

.tool-card:hover,
.tool-card:focus-visible {
    transform: translateY(-4px);
    border-color: rgba(79, 209, 197, 0.32);
    box-shadow: 0 28px 45px rgba(8, 12, 42, 0.45);
}

/* Why Section */
.why-section {
    padding: clamp(4rem, 9vw, 5.5rem) 0;
    background: rgba(8, 11, 24, 0.68);
    border-block: 1px solid rgba(255, 255, 255, 0.05);
}

.two-column {
    display: grid;
    gap: clamp(2.5rem, 6vw, 4rem);
    align-items: start;
}

.two-column > div h2 {
    font-size: clamp(2.1rem, 4.5vw, 2.8rem);
    margin-bottom: 1rem;
}

.two-column > div p {
    color: var(--color-muted);
    margin-bottom: 1.6rem;
}

.feature-list {
    list-style: none;
    display: grid;
    gap: 1rem;
}

.feature-list li {
    padding: 1rem 1.2rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.insight-card {
    padding: clamp(1.8rem, 4vw, 2.2rem);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(79, 209, 197, 0.2);
    background: linear-gradient(145deg, rgba(10, 13, 26, 0.92), rgba(19, 23, 38, 0.82));
    box-shadow: var(--shadow-card);
}

.insight-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}

.insight-card dl {
    display: grid;
    gap: 1rem;
}

.insight-card dt {
    font-size: 0.9rem;
    color: var(--color-muted);
    margin-bottom: 0.35rem;
}

.insight-card dd {
    font-size: 1.75rem;
    font-weight: 600;
}

.insight-note {
    margin-top: 1.4rem;
    font-size: 0.85rem;
    color: rgba(245, 247, 255, 0.6);
}

/* FAQ */
.faq {
    padding: clamp(4rem, 9vw, 5.5rem) 0 clamp(5rem, 10vw, 6rem);
}

.faq-grid {
    display: grid;
    gap: 1rem;
    max-width: 860px;
    margin: 0 auto;
}

.faq details {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 1.1rem 1.4rem;
    transition: var(--transition-base);
}

.faq details[open] {
    border-color: rgba(79, 209, 197, 0.3);
    background: rgba(79, 209, 197, 0.08);
}

.faq summary {
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    position: relative;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq p {
    margin-top: 0.8rem;
    color: var(--color-muted);
}

/* Footer */
.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(6, 8, 22, 0.85);
    padding: 2.2rem 0;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.footer-link {
    font-size: 0.9rem;
    color: rgba(245, 247, 255, 0.72);
}

.footer-link:hover,
.footer-link:focus-visible {
    color: var(--color-accent);
}

.no-scroll {
    overflow: hidden;
}

/* Language Switcher */
.language-switcher {
    margin-left: 1.5rem;
    position: relative;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.5rem 0.95rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.lang-btn:hover,
.lang-btn:focus-visible {
    border-color: rgba(79, 209, 197, 0.34);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 0.6rem);
    right: 0;
    display: grid;
    gap: 0.45rem;
    padding: 0.6rem;
    border-radius: var(--radius-sm);
    background: rgba(10, 13, 26, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-soft);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition-slow);
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.45rem 0.8rem;
    border-radius: 10px;
    transition: var(--transition-base);
}

.lang-option:hover,
.lang-option:focus-visible {
    background: rgba(79, 209, 197, 0.18);
}

.lang-option.active {
    background: rgba(79, 209, 197, 0.28);
    color: var(--color-text);
}

/* Responsive */
@media (max-width: 960px) {
    .site-actions {
        display: contents;
    }

    .primary-nav {
        position: fixed;
        inset: 0;
        background: rgba(6, 8, 22, 0.95);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.2rem;
        transform: translateY(-100%);
        transition: var(--transition-slow);
        z-index: 9;
    }

    .primary-nav.is-open {
        transform: translateY(0);
    }

    .nav-toggle {
        display: flex;
        margin-left: auto;
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .language-switcher {
        margin-left: 0.5rem;
    }

    .two-column {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 640px) {
    .hero-content {
        text-align: left;
    }

    .hero-actions {
        justify-content: flex-start;
    }

    .headline-pill {
        justify-content: flex-start;
    }

    .catalog {
        padding-block: 3.2rem;
    }

    .faq {
        padding-block: 3.2rem 4.5rem;
    }

    #tool-search {
        font-size: 0.98rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}