:root {
    --ai-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --ai-container-width: 1200px;
    --ai-content-width: 720px;
    --ai-sidebar-width: 320px;

    --ai-bg: #ffffff;
    --ai-bg-secondary: #f8f9fb;
    --ai-bg-card: #ffffff;
    --ai-text: #111827;
    --ai-text-secondary: #6b7280;
    --ai-text-tertiary: #9ca3af;
    --ai-border: #e5e7eb;
    --ai-border-light: #f3f4f6;
    --ai-shadow: 0 1px 2px rgba(0,0,0,0.04);
    --ai-shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 1px rgba(0,0,0,0.02);
    --ai-shadow-md: 0 4px 6px rgba(0,0,0,0.03), 0 2px 4px rgba(0,0,0,0.02);
    --ai-shadow-lg: 0 10px 25px rgba(0,0,0,0.05), 0 4px 10px rgba(0,0,0,0.03);
    --ai-primary: #6366f1;
    --ai-primary-hover: #4f46e5;
    --ai-primary-light: rgba(99,102,241,0.06);
    --ai-primary-border: rgba(99,102,241,0.15);
    --ai-accent: #10b981;
    --ai-accent-light: rgba(16,185,129,0.06);
    --ai-accent-border: rgba(16,185,129,0.15);
    --ai-danger: #ef4444;
    --ai-danger-light: rgba(239,68,68,0.06);
    --ai-danger-border: rgba(239,68,68,0.15);
    --ai-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --ai-radius: 12px;
    --ai-radius-sm: 8px;
    --ai-radius-xs: 6px;
    --ai-transition: 0.2s ease;
    --ai-transition-slow: 0.35s ease;
}

body .oceanwp-theme .single-ai-tool,
.single-ai-tool {
    font-family: var(--ai-font-family);
    color: var(--ai-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.ai-section__title {
    font-size: 25px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin: 30px 0 0 0;
    color: var(--ai-text);
    line-height: 1.3;
}

/* --- Reading Progress Bar --- */
.ai-reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 9999;
}
.ai-reading-progress__bar {
    height: 100%;
    width: 0;
    background: var(--ai-primary);
    transition: width 0.1s linear;
}

/* --- Hero Section --- */
.ai-hero {
    display: none;
}
.ai-hero__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.ai-hero__content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2.5rem;
    width: 100%;
}
.ai-hero__logo {
    flex-shrink: 0;
    width: 96px;
    height: 96px;
    border-radius: var(--ai-radius);
    overflow: hidden;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
}
.ai-hero__logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.ai-hero__text {
    flex: 1;
    min-width: 0;
}
.ai-hero__badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.9);
    margin-bottom: 0.6rem;
    border: 1px solid rgba(255,255,255,0.15);
    text-decoration: none;
}
.ai-hero__badge:hover {
    background: rgba(255,255,255,0.2) !important;
    color: #fff !important;
}
.ai-hero__title {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #fff;
    margin: 0 0 0.5rem;
    line-height: 1.2;
}
.ai-hero__excerpt {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.7);
    margin: 0 0 1.25rem;
    line-height: 1.6;
    max-width: 560px;
}
.ai-hero__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.65rem 1.5rem;
    border-radius: 9999px;
    font-size: 0.9rem;
    font-weight: 600;
    background: var(--ai-gradient);
    color: #fff;
    text-decoration: none;
    transition: all var(--ai-transition);
    box-shadow: 0 2px 10px rgba(99,102,241,0.3);
}
.ai-hero__cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(99,102,241,0.4);
    color: #fff;
}

/* --- Layout --- */
.ai-layout {
    display: grid;
    grid-template-columns: 1fr var(--ai-sidebar-width);
    gap: 2rem;
    align-items: start;
}
.ai-main {
    min-width: 0;
}
.ai-sidebar {
    position: sticky;
    top: 1.5rem;
}

/* --- Quick Info Card --- */
.ai-quick-info--mobile {
    display: none;
}
.ai-quick-info__card {
    background: var(--ai-bg-card);
    border-radius: var(--ai-radius);
    border: 1px solid var(--ai-border);
    overflow: hidden;
    transition: box-shadow var(--ai-transition);
}
.ai-quick-info__card:hover {
    box-shadow: var(--ai-shadow-md);
}
.ai-quick-info__image {
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    background: var(--ai-bg-secondary);
}
.ai-quick-info__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--ai-transition-slow);
}
.ai-quick-info__card:hover .ai-quick-info__image img {
    transform: scale(1.02);
}
.ai-quick-info__body {
    padding: 1rem 1.25rem 1.25rem;
}
.ai-quick-info__name {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 0.3rem;
    color: var(--ai-text);
    text-align: center;
}
.ai-quick-info__meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0.85rem;
}
.ai-quick-info__meta-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--ai-border-light);
}
.ai-quick-info__meta-item:last-child {
    border-bottom: none;
}
.ai-quick-info__meta-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--ai-text-secondary);
}
.ai-quick-info__meta-value {
    font-size: 13px;
    font-weight: 600;
    color: var(--ai-text);
    text-align: right;
}
.ai-quick-info__meta-value a {
    color: var(--ai-primary);
    text-decoration: none;
    font-weight: 600;
}
.ai-quick-info__meta-value a:hover {
    text-decoration: underline;
}
.ai-quick-info__button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
    padding: 0.6rem 1rem;
    border-radius: var(--ai-radius-sm);
    font-size: 20px;
    font-weight: 600;
    background: var(--ai-primary);
    color: #fff;
    text-decoration: none;
    transition: background var(--ai-transition);
    margin-bottom: 0.65rem;
}
.ai-quick-info__button:hover {
    background: var(--ai-primary-hover);
    color: #fff;
}
/* --- About Section --- */
.ai-about {
    margin-bottom: 2.25rem;
}
.ai-about__content {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--ai-text);
}
.ai-about__content h2,
.ai-about__content h3,
.ai-about__content h4 {
    margin-top: 1.5em;
    margin-bottom: 0.6em;
    font-weight: 700;
    line-height: 1.3;
    color: var(--ai-text);
}
.ai-about__content h2 { font-size: 1.3rem; }
.ai-about__content h3 { font-size: 1.1rem; }
.ai-about__content h4 { font-size: 1rem; }
.ai-about__content p {
    font-size: 16px;
    margin-bottom: 1em;
}
.ai-about__content a {
    color: var(--ai-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.ai-about__content ul,
.ai-about__content ol {
    padding-left: 1.25em;
    margin-bottom: 1em;
}
.ai-about__content li {
    margin-bottom: 0.25em;
}
.ai-about__content img {
    border-radius: var(--ai-radius-sm);
    max-width: 100%;
    height: auto;
}
.ai-about__content blockquote {
    border-left: 3px solid var(--ai-border);
    padding-left: 1rem;
    margin: 1.25em 0;
    color: var(--ai-text-secondary);
}
.ai-about__content pre {
    border-radius: var(--ai-radius-sm);
    padding: 1rem;
    overflow-x: auto;
    background: var(--ai-bg-secondary);
    border: 1px solid var(--ai-border);
    font-size: 0.88rem;
}
.ai-about__content code {
    font-size: 0.88em;
    padding: 0.15em 0.35em;
    border-radius: 4px;
    background: var(--ai-bg-secondary);
    border: 1px solid var(--ai-border);
}

/* --- Features Section --- */
.ai-features {
    margin-bottom: 2.25rem;
}
.ai-features__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}
.ai-features__card {
    display: flex;
    gap: 0.85rem;
    padding: 1rem 1.15rem;
    background: var(--ai-bg-card);
    border-radius: var(--ai-radius-sm);
    border: 1px solid var(--ai-border);
    transition: all var(--ai-transition);
}
.ai-features__card:hover {
    border-color: var(--ai-primary-border);
    background: var(--ai-primary-light);
}
.ai-features__icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--ai-accent-light);
}
.ai-features__name {
    font-size: 0.88rem;
    font-weight: 600;
    margin: 0 0 0.15rem;
    color: var(--ai-text);
}
.ai-features__desc {
    font-size: 0.82rem;
    color: var(--ai-text-secondary);
    margin: 0;
    line-height: 1.5;
}
.ai-features__html {
    grid-column: 1 / -1;
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--ai-text);
    padding: 0.5rem 0;
}
.ai-features__html ul,
.ai-features__html ol {
    padding-left: 1.25em;
    margin: 0.5em 0;
}
.ai-features__html li {
    margin-bottom: 0.35em;
}
.ai-features__html p {
    font-size: 16px;
    margin-bottom: 0.75em;
}

/* --- Pros & Cons Section --- */
.ai-proscons {
    margin-bottom: 2.25rem;
}
.ai-proscons__html {
    font-size: 16px;
    line-height: 1.7;
    color: var(--ai-text);
}
.ai-proscons__html ul,
.ai-proscons__html ol {
    padding-left: 1.25em;
    margin: 0.5em 0;
}
.ai-proscons__html li {
    margin-bottom: 0.35em;
}
.ai-proscons__html p {
    font-size: 16px;
    margin-bottom: 0.75em;
}

/* --- FAQ Section --- */
.ai-faq {
    margin-bottom: 2.25rem;
}
.ai-faq__html {
    font-size: 16px;
    line-height: 1.7;
    color: var(--ai-text);
}
.ai-faq__html ul,
.ai-faq__html ol {
    padding-left: 1.25em;
    margin: 0.5em 0;
}
.ai-faq__html li {
    margin-bottom: 0.35em;
}
.ai-faq__html p {
    font-size: 16px;
    margin-bottom: 0.75em;
}

/* --- CTA Banner --- */
.ai-cta-banner {
    position: relative;
    border-radius: var(--ai-radius);
    overflow: hidden;
    margin-bottom: 2.25rem;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    padding: 2.5rem 2rem;
    text-align: center;
}
.ai-cta-banner__title {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 0.5rem;
    letter-spacing: -0.01em;
}
.ai-cta-banner__text {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
    margin: 0 0 1.25rem;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
}
.ai-cta-banner__button {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.7rem 1.75rem;
    border-radius: 9999px;
    font-size: 18px;
    font-weight: 600;
    background: #fff;
    color: var(--ai-primary);
    text-decoration: none;
    transition: all var(--ai-transition);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.ai-cta-banner__button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    color: var(--ai-primary-hover);
}

/* --- Related Tools Section --- */
.ai-related {
    margin-bottom: 2.25rem;
}
.ai-related__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}
.ai-related__card {
    background: var(--ai-bg-card);
    border-radius: var(--ai-radius-sm);
    border: 1px solid var(--ai-border);
    overflow: hidden;
    transition: all var(--ai-transition);
}
.ai-related__card:hover {
    border-color: var(--ai-primary-border);
    box-shadow: var(--ai-shadow-md);
}
.ai-related__image {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--ai-bg-secondary);
}
.ai-related__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--ai-transition-slow);
}
.ai-related__card:hover .ai-related__image img {
    transform: scale(1.03);
}
.ai-related__body {
    padding: 0.85rem 1rem 1rem;
}
.ai-related__name {
    font-size: 0.85rem;
    font-weight: 700;
    margin: 0 0 0.25rem;
    color: var(--ai-text);
    line-height: 1.3;
}
.ai-related__category {
    display: inline-block;
    padding: 0.1rem 0.45rem;
    border-radius: 9999px;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--ai-primary-light);
    color: var(--ai-primary);
    margin-bottom: 0.65rem;
    text-decoration: none;
}
.ai-related__category:hover {
    background: var(--ai-primary) !important;
    color: #fff !important;
}
.ai-related__button {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--ai-primary);
    color: #fff;
    text-decoration: none;
    transition: background var(--ai-transition);
}
.ai-related__button:hover {
    background: var(--ai-primary-hover);
    color: #fff;
}

/* --- Sticky Mobile CTA --- */
.ai-sticky-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.65rem 1rem;
    background: var(--ai-bg-card);
    border-top: 1px solid var(--ai-border);
    box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
    z-index: 9990;
    backdrop-filter: blur(8px);
}
.ai-sticky-cta__button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
    padding: 0.7rem 1rem;
    border-radius: var(--ai-radius-sm);
    font-size: 0.9rem;
    font-weight: 700;
    background: var(--ai-primary);
    color: #fff;
    text-decoration: none;
    transition: background var(--ai-transition);
}
.ai-sticky-cta__button:hover {
    background: var(--ai-primary-hover);
    color: #fff;
}

/* --- OceanWP Compatibility --- */
.oceanwp-theme #content-wrap.single-ai-tool-wrap {
    padding-top: 1.5rem;
    padding-bottom: 2rem;
}
.oceanwp-theme .single-ai-tool a:not(.ai-hero__cta):not(.ai-quick-info__button):not(.ai-cta-banner__button):not(.ai-related__button):not(.ai-sticky-cta__button) {
    color: var(--ai-primary);
}

/* --- Tablet --- */
@media (max-width: 1024px) {
    .ai-layout {
        grid-template-columns: 1fr;
    }
    .ai-sidebar {
        display: none;
    }
    .ai-quick-info--mobile {
        display: block;
        margin-bottom: 1.25rem;
    }
    .ai-hero__content {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1.5rem;
    }
    .ai-hero__logo {
        width: 80px;
        height: 80px;
    }
    .ai-hero__excerpt {
        max-width: 100%;
    }
    .ai-related__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- Mobile --- */
@media (max-width: 768px) {
    .ai-hero {
        min-height: auto;
        border-radius: 0;
        margin-left: -1rem;
        margin-right: -1rem;
        margin-bottom: 1.25rem;
    }
    .ai-hero__content {
        padding: 1.75rem 1.25rem;
        gap: 1.25rem;
    }
    .ai-hero__title {
        font-size: 1.35rem;
    }
    .ai-hero__excerpt {
        font-size: 0.88rem;
    }
    .ai-hero__logo {
        width: 72px;
        height: 72px;
    }
    .ai-section__title {
        margin-bottom: 1rem;
    }
    .ai-features__grid {
        grid-template-columns: 1fr;
    }
    .ai-proscons__grid {
        grid-template-columns: 1fr;
    }
    .ai-related__grid {
        grid-template-columns: 1fr;
    }
    .ai-cta-banner {
        padding: 1.75rem 1.25rem;
    }
    .ai-cta-banner__title {
        font-size: 1.25rem;
    }
    .ai-sticky-cta {
        display: block;
    }
    .oceanwp-theme #content-wrap {
        padding-bottom: 4rem;
    }
}

/* --- Dark Mode --- */
@media (prefers-color-scheme: dark) {
    :root {
        --ai-bg: #0f172a;
        --ai-bg-secondary: #1e293b;
        --ai-bg-card: #1e293b;
        --ai-text: #f1f5f9;
        --ai-text-secondary: #94a3b8;
        --ai-text-tertiary: #64748b;
        --ai-border: #334155;
        --ai-border-light: #1e293b;
        --ai-shadow: 0 1px 2px rgba(0,0,0,0.2);
        --ai-shadow-sm: 0 1px 3px rgba(0,0,0,0.2), 0 1px 1px rgba(0,0,0,0.1);
        --ai-shadow-md: 0 4px 6px rgba(0,0,0,0.15), 0 2px 4px rgba(0,0,0,0.1);
        --ai-shadow-lg: 0 10px 25px rgba(0,0,0,0.2), 0 4px 10px rgba(0,0,0,0.1);
        --ai-primary-light: rgba(99,102,241,0.1);
        --ai-primary-border: rgba(99,102,241,0.2);
        --ai-accent-light: rgba(16,185,129,0.08);
        --ai-accent-border: rgba(16,185,129,0.15);
        --ai-danger-light: rgba(239,68,68,0.08);
        --ai-danger-border: rgba(239,68,68,0.15);
    }

}