/*
 * Rankifly.it — Main Stylesheet
 * Stack: CSS3 Grid, Custom Properties, mobile-first.
 * No frameworks, no external dependencies.
 * Target: 100/100 PageSpeed Insights on all 4 categories.
 *
 * Critical above-the-fold styles are inlined in header.php.
 * This file is loaded via <link rel="preload"> (no render blocking).
 *
 * Sections:
 *   1. Buttons
 *   2. Sections / Layout
 *   3. Hero
 *   4. Plugins grid & cards
 *   5. About block
 *   6. Plugin page — hero
 *   7. Plugin page — features
 *   8. Plugin page — steps
 *   9. Plugin page — requirements
 *  10. Plugin page — external services
 *  11. Plugin page — CTA
 *  12. Breadcrumb
 *  13. Footer
 *  14. Responsive
 *  15. Reduced motion
 */

/* ══════════
   1. Buttons
   ════════ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .75rem 1.5rem;
    border-radius: 100px;
    font-size: .9375rem;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
    white-space: nowrap;
}
.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
    background: linear-gradient(135deg, var(--c-purple), #4A51D8);
    color: var(--c-white);
    box-shadow: 0 6px 28px rgba(96,102,232,.38);
}
.btn--primary:hover { box-shadow: 0 10px 36px rgba(96,102,232,.55); }

.btn--ghost {
    background: transparent;
    color: var(--c-white);
    border: 1px solid var(--c-border);
}
.btn--ghost:hover {
    border-color: rgba(255,255,255,.22);
    background: rgba(255,255,255,.05);
}

.btn--small { padding: .5rem 1rem; font-size: .8125rem; }
.btn--lg    { padding: 1rem 2rem;  font-size: 1rem; }

/* ════════════════════
   2. Sections / Layout
   ═════════════════ */

.section {
    padding-block: 5rem;
}

.section__header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section__title {
    font-size: clamp(1.625rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -.025em;
    line-height: 1.1;
}

.section__sub {
    margin-top: .875rem;
    color: var(--c-muted);
    font-size: 1.0625rem;
    max-width: 520px;
    margin-inline: auto;
}

/* ═════════════
   3. Hero (home)
   ═══════════ */

.hero__glow {
    position: absolute;
    inset: -10% -20%;
    border-radius: 50%;
    background: radial-gradient(ellipse at 60% 40%,
        color-mix(in srgb, var(--glow-color, #6066E8) 22%, transparent) 0%,
        transparent 65%);
    pointer-events: none;
    z-index: 0;
}

.home-hero__inner {
    position: relative;
    z-index: 1;
    padding-block: 2rem;
}

.hero__ctas {
    display: flex;
    flex-wrap: wrap;
    gap: .875rem;
    margin-top: 2.25rem;
}

/* ══════════════════════
   4. Plugins grid & cards
   ═════════════════════ */

.section--plugins {
    background: linear-gradient(180deg,
        transparent 0%,
        rgba(96,102,232,.04) 50%,
        transparent 100%);
}

.plugins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
    gap: 1.25rem;
    padding: 0;
}

.plugin-card {
    position: relative;
    display: grid;
    grid-template-rows: auto 1fr auto;
    background: var(--c-bg2);
    border: 1px solid var(--c-border);
    border-radius: var(--r-lg);
    padding: 1.75rem;
    overflow: hidden;
    transition: border-color .25s, transform .25s;
}
.plugin-card:hover {
    border-color: rgba(96,102,232,.35);
    transform: translateY(-4px);
}

/* Top accent bar that takes the plugin's color */
.plugin-card__accent {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--card-color, var(--c-purple));
    opacity: .7;
}

.plugin-card__header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.plugin-card__icon {
    flex-shrink: 0;
    border-radius: var(--r);
    overflow: hidden;
    background: rgba(96,102,232,.12);
    box-shadow: 0 0 0 1px rgba(96,102,232,.18);
}

.plugin-card__name {
    font-size: 1.0625rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: .25rem;
}
.plugin-card__name a { color: var(--c-white); }
.plugin-card__name a:hover { color: var(--c-purple-l); }

.plugin-card__version {
    font-size: .75rem;
    color: var(--c-muted);
}

.plugin-card__desc {
    color: var(--c-muted);
    font-size: .9375rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.plugin-card__footer {
    display: flex;
    gap: .625rem;
    flex-wrap: wrap;
}

/* ═════════════
   5. About block
   ════════════ */

.section--about {
    padding-block: 4rem;
}

.about-block {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    background: var(--c-bg2);
    border: 1px solid var(--c-border);
    border-radius: var(--r-lg);
    padding: 3rem 2.5rem;
}

.about-block__copy p {
    color: var(--c-muted);
    font-size: 1.0625rem;
    line-height: 1.7;
    margin-top: 1rem;
    max-width: 560px;
}

.about-block__pillars {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}

.about-block__pillars li {
    display: flex;
    align-items: center;
    gap: .875rem;
    font-size: 1rem;
    font-weight: 500;
}

.pillar__icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--c-bg3);
    border: 1px solid var(--c-border);
    flex-shrink: 0;
}

/* ════════════════════
   6. Plugin page — hero
   ═══════════════════ */

.plugin-hero {
    padding-block: 4rem;
}

.plugin-hero__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.plugin-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-top: 1.25rem;
}

.plugin-badge {
    display: inline-block;
    padding: .25rem .75rem;
    border-radius: 100px;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .04em;
}
.plugin-badge--version { background: rgba(96,102,232,.18); color: var(--c-purple-l); }
.plugin-badge--free    { background: rgba(0,245,150,.12);  color: var(--c-green); }
.plugin-badge--tested  { background: rgba(255,255,255,.07); color: var(--c-muted); }

.plugin-hero__ctas { margin-top: 2rem; }

.plugin-hero__icon {
    display: flex;
    justify-content: center;
}
.plugin-hero__icon svg {
    filter: drop-shadow(0 20px 60px rgba(0,0,0,.5));
}

/* ════════════════════════
   7. Plugin page — features
   ══════════════════════ */

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.125rem;
}

.feature-card {
    position: relative;
    background: var(--c-bg2);
    border: 1px solid var(--c-border);
    border-radius: var(--r);
    padding: 1.75rem 1.75rem 1.75rem 2.25rem;
    overflow: hidden;
    transition: border-color .25s, transform .22s;
}
.feature-card:hover {
    border-color: color-mix(in srgb, var(--feat-color, var(--c-purple)) 40%, transparent);
    transform: translateY(-3px);
}

/* Vertical accent bar on the left */
.feature-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--feat-color, var(--c-purple));
    border-radius: 0 2px 2px 0;
}

.feature-card__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--feat-color, var(--c-purple));
    margin-bottom: 1rem;
    box-shadow: 0 0 12px var(--feat-color, var(--c-purple));
}

.feature-card__title {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: .5rem;
}

.feature-card__body {
    color: var(--c-muted);
    font-size: .9375rem;
    line-height: 1.6;
}

/* ═════════════════════
   8. Plugin page — steps
   ════════════════════ */

.section--how {
    background: linear-gradient(180deg,
        transparent,
        rgba(96,102,232,.04) 50%,
        transparent);
}

.steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    position: relative;
    padding: 0;
}

/* Vertical connector line */
.steps::before {
    content: '';
    position: absolute;
    left: 1.5rem;
    top: 3rem;
    bottom: 3rem;
    width: 1px;
    background: linear-gradient(180deg,
        transparent,
        var(--c-purple),
        var(--c-cyan),
        transparent);
    opacity: .25;
}

.step {
    display: grid;
    grid-template-columns: 3rem 1fr;
    gap: 1.5rem;
    padding-block: 1.75rem;
    align-items: start;
}

.step__num {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--c-bg2);
    border: 1px solid var(--c-border);
    display: grid;
    place-items: center;
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--c-purple-l);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.step__title {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: .375rem;
    padding-top: .625rem;
}

.step__body {
    color: var(--c-muted);
    font-size: .9375rem;
    line-height: 1.6;
}

/* ════════════════════════════
   9. Plugin page — requirements
   ═══════════════════════════ */

.req-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: .875rem;
    padding: 0;
}

.req-item {
    display: flex;
    align-items: center;
    gap: .875rem;
    background: var(--c-bg2);
    border: 1px solid var(--c-border);
    border-radius: var(--r);
    padding: 1.125rem 1.25rem;
}

.req-item__icon {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(96,102,232,.1);
    flex-shrink: 0;
}

.req-item strong {
    display: block;
    font-size: .9375rem;
    font-weight: 600;
    margin-bottom: .125rem;
}
.req-item span {
    font-size: .8125rem;
    color: var(--c-muted);
}

/* ══════════════════════════════════
   10. Plugin page — external services
   ════════════════════════════════ */

.section--ext { padding-block: 3.5rem; }

.ext-service-box {
    background: rgba(255,215,0,.05);
    border: 1px solid rgba(255,215,0,.18);
    border-radius: var(--r);
    padding: 1.5rem 2rem;
    font-size: .9375rem;
    color: var(--c-muted);
    line-height: 1.7;
}
.ext-service-box a { color: var(--c-purple-l); text-decoration: underline; }
.ext-service-box a:hover { color: var(--c-white); }
.ext-service-box code {
    background: var(--c-bg3);
    padding: .125rem .4rem;
    border-radius: 4px;
    font-size: .875em;
    color: var(--c-cyan);
}

/* ════════════════════
   11. Plugin page — CTA
   ════════════════════ */

.section--cta { padding-block: 4rem; }

.cta-block {
    background: var(--c-bg2);
    border: 1px solid var(--c-border);
    border-radius: var(--r-lg);
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-block::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 100%, rgba(96,102,232,.18) 0%, transparent 65%);
    pointer-events: none;
}

.cta-block__title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -.025em;
    position: relative;
}

.cta-block__sub {
    color: var(--c-muted);
    margin: .875rem auto 2.25rem;
    max-width: 440px;
    font-size: 1rem;
    position: relative;
}

.cta-block__note {
    margin-top: 1rem;
    font-size: .8125rem;
    color: var(--c-muted);
    position: relative;
}

/* ═════════════
   12. Breadcrumb
   ═════════════ */

.breadcrumb {
    padding-block: .875rem;
    border-bottom: 1px solid var(--c-border);
}

.breadcrumb__list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: .375rem;
    font-size: .8125rem;
    color: var(--c-muted);
}

.breadcrumb__list a { color: var(--c-muted); }
.breadcrumb__list a:hover { color: var(--c-white); }
.breadcrumb__list [aria-current="page"] { color: var(--c-white); }

/* ═════════
   13. Footer
   ═════════ */

.site-footer {
    margin-top: 4rem;
    border-top: 1px solid var(--c-border);
    padding-top: 3.5rem;
}

.site-footer__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
}

.site-footer__logo {
    display: inline-flex;
    align-items: center;
    gap: .625rem;
    font-weight: 700;
    font-size: 1.0625rem;
    margin-bottom: .875rem;
}

.site-footer__tagline {
    font-size: .875rem;
    color: var(--c-muted);
    max-width: 320px;
    line-height: 1.55;
}

.site-footer__nav-title {
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--c-muted);
    margin-bottom: .875rem;
}

.site-footer__nav ul {
    display: flex;
    flex-direction: column;
    gap: .625rem;
}

.site-footer__nav a {
    font-size: .9375rem;
    color: var(--c-muted);
    transition: color .18s;
}
.site-footer__nav a:hover { color: var(--c-white); }

.site-footer__bottom {
    border-top: 1px solid var(--c-border);
    padding-block: 1.25rem;
    font-size: .8125rem;
    color: var(--c-muted);
}
.site-footer__bottom a { color: var(--c-muted); }
.site-footer__bottom a:hover { color: var(--c-white); }

/* ══════════════
   14. Responsive
   ══════════════ */

@media (min-width: 640px) {
    .features-grid      { grid-template-columns: repeat(2, 1fr); }
    .about-block__pillars { grid-template-columns: 1fr; }
    .site-footer__inner { grid-template-columns: 2fr 1fr 1fr; }
}

@media (min-width: 900px) {
    .plugin-hero__inner { grid-template-columns: 1fr auto; gap: 5rem; }
    .features-grid      { grid-template-columns: repeat(2, 1fr); }
    .about-block        { grid-template-columns: 1fr 1fr; }
    .about-block__pillars { grid-template-columns: 1fr; }

    /* Steps horizontal on wide screens */
    .steps {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
    .steps::before {
        left: 0; right: 0; top: 1.5rem; bottom: auto;
        height: 1px; width: auto;
        background: linear-gradient(90deg, transparent, var(--c-purple), var(--c-cyan), transparent);
    }
    .step { grid-template-columns: 1fr; gap: 1rem; padding: 0; }
    .step__num   { margin-inline: auto; }
    .step__title { text-align: center; padding-top: 0; }
    .step__body  { text-align: center; }

    .req-grid { grid-template-columns: repeat(4, 1fr); }
}
/* CLS fix — plugin cards  */
.plugin-card__icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
    contain: strict;
}

.plugin-card__icon svg {
    width: 48px;
    height: 48px;
}

/* Prevents grid reflow while loading */
.plugins-grid {
    contain: layout;
}

/* Reserve space for card content */
.plugin-card {
    min-height: 260px;
    contain: layout style;
}

/* ══════════════════
   15. Reduced motion
   ══════════════════ */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition-duration: .01ms !important; }
    html { scroll-behavior: auto; }
}

/* Focus visible (accessibility)  */
:focus-visible {
    outline: 2px solid var(--c-purple-l);
    outline-offset: 3px;
    border-radius: 3px;
}