/* ============================================
   Feature Detail Page Styles
   Extends index-modern.css design tokens.
   ============================================ */

/* --- Page-Level Theme Variables --- */
.feature-page {
    --fp-page-bg: var(--ms-slate-50);
    --fp-section-bg: var(--ms-slate-50);
    --fp-section-alt-bg: white;
    --fp-heading-color: var(--ms-slate-900);
    --fp-text-color: var(--ms-slate-600);
    --fp-subtext-color: var(--ms-slate-500);
    --fp-card-bg: white;
    --fp-card-border: var(--ms-slate-200);
    --fp-card-hover-border: var(--ms-slate-300);
    --fp-card-heading: var(--ms-slate-900);
    --fp-card-text: var(--ms-slate-500);
    --fp-breadcrumb-color: var(--ms-slate-500);
    --fp-breadcrumb-active: var(--ms-slate-700);
    --fp-img-bg: var(--ms-slate-100);
    --fp-label-color: var(--ms-teal-600);
    --fp-gradient-start: var(--ms-teal-600);
    --fp-gradient-end: var(--ms-teal-500);
}

[data-theme="dark"] .feature-page {
    --fp-page-bg: var(--ms-indigo-950);
    --fp-section-bg: var(--ms-indigo-950);
    --fp-section-alt-bg: rgba(255, 255, 255, 0.02);
    --fp-heading-color: white;
    --fp-text-color: var(--ms-slate-400);
    --fp-subtext-color: var(--ms-slate-400);
    --fp-card-bg: rgba(255, 255, 255, 0.04);
    --fp-card-border: rgba(255, 255, 255, 0.08);
    --fp-card-hover-border: rgba(255, 255, 255, 0.12);
    --fp-card-heading: var(--ms-slate-100);
    --fp-card-text: var(--ms-slate-400);
    --fp-breadcrumb-color: var(--ms-slate-500);
    --fp-breadcrumb-active: var(--ms-slate-300);
    --fp-img-bg: var(--ms-indigo-900);
    --fp-label-color: var(--ms-teal-400);
    --fp-gradient-start: var(--ms-teal-400);
    --fp-gradient-end: var(--ms-teal-300);
}

.feature-page {
    background-color: var(--fp-page-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease;
}

/* --- Hero --- */
.ms-feature-hero {
    background: var(--ms-indigo-950);
    padding: 6rem 0 4rem;
    position: relative;
    overflow: hidden;
    text-align: center;
}
.ms-feature-hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.1), transparent 70%);
    top: -200px;
    right: -100px;
    pointer-events: none;
}
.ms-feature-hero .container {
    position: relative;
    z-index: 1;
}
.ms-feature-hero-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--ms-radius-xl);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    background: rgba(20, 184, 166, 0.15);
    color: var(--ms-teal-400);
}
.ms-feature-hero h1 {
    font-size: clamp(2.25rem, 5vw, 3.25rem);
    font-weight: 900;
    color: white;
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: -0.035em;
}
.ms-feature-hero-tagline {
    font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
    color: var(--ms-slate-400);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 2rem;
    font-weight: 400;
}

/* --- Breadcrumb --- */
.ms-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    list-style: none;
    padding: 0;
    margin: 0;
}
.ms-breadcrumb li {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.ms-breadcrumb a {
    color: var(--ms-slate-500);
    text-decoration: none;
    transition: color 0.15s ease;
}
.ms-breadcrumb a:hover {
    color: var(--ms-teal-400);
}
.ms-breadcrumb-separator {
    color: var(--ms-slate-600);
}
.ms-breadcrumb-current {
    color: var(--ms-slate-300);
}

/* --- Overview Section --- */
.ms-feature-overview {
    background: var(--fp-section-bg);
    padding: 5rem 0;
    transition: background 0.3s ease;
}
.ms-feature-overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.ms-feature-overview-text h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--fp-heading-color);
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
    transition: color 0.3s ease;
}
.ms-feature-overview-text p {
    font-size: 1.0625rem;
    color: var(--fp-text-color);
    line-height: 1.8;
    transition: color 0.3s ease;
}
.ms-feature-img-container {
    border-radius: var(--ms-radius-2xl);
    overflow: hidden;
    background: var(--fp-img-bg);
    transition: background 0.3s ease;
}
.ms-feature-img-container img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--ms-radius-2xl);
}

/* Theme-aware image toggling (scoped to container to beat .ms-feature-img-container img specificity) */
.ms-feature-img-container .ms-feature-img-dark {
    display: none;
}
.ms-feature-img-container .ms-feature-img-light {
    display: block;
}
[data-theme="dark"] .ms-feature-img-container .ms-feature-img-dark {
    display: block;
}
[data-theme="dark"] .ms-feature-img-container .ms-feature-img-light {
    display: none;
}
/* When only one image exists, show it in both modes */
.ms-feature-img-always {
    display: block;
}

/* --- Benefits Section --- */
.ms-feature-benefits {
    background: var(--fp-section-alt-bg);
    padding: 5rem 0;
    transition: background 0.3s ease;
}
.ms-feature-benefits-header {
    text-align: center;
    margin-bottom: 3rem;
}
.ms-feature-benefits-header .ms-label {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--fp-label-color);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}
.ms-feature-benefits-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--fp-heading-color);
    letter-spacing: -0.025em;
    transition: color 0.3s ease;
}
.ms-benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}
.ms-benefit-card {
    background: var(--fp-card-bg);
    border: 1px solid var(--fp-card-border);
    border-radius: var(--ms-radius-xl);
    padding: 2rem 1.75rem;
    transition: all 0.2s ease;
}
.ms-benefit-card:hover {
    border-color: var(--fp-card-hover-border);
    box-shadow: var(--ms-shadow-lg);
    transform: translateY(-2px);
}
.ms-benefit-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--ms-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    margin-bottom: 1.25rem;
    background: rgba(20, 184, 166, 0.08);
    color: var(--fp-gradient-start);
    transition: background 0.3s ease, color 0.3s ease;
}
.ms-benefit-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--fp-card-heading);
    letter-spacing: -0.01em;
    transition: color 0.3s ease;
}
.ms-benefit-card p {
    font-size: 0.9375rem;
    color: var(--fp-card-text);
    line-height: 1.65;
    margin: 0;
    transition: color 0.3s ease;
}

/* --- How It Works Section --- */
.ms-feature-steps {
    background: var(--fp-section-bg);
    padding: 5rem 0;
    transition: background 0.3s ease;
}
.ms-feature-steps-header {
    text-align: center;
    margin-bottom: 3rem;
}
.ms-feature-steps-header .ms-label {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--fp-label-color);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}
.ms-feature-steps-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--fp-heading-color);
    letter-spacing: -0.025em;
    transition: color 0.3s ease;
}
.ms-feature-steps-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
}
.ms-feature-steps-connector {
    position: absolute;
    top: 36px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--ms-teal-500), var(--ms-indigo-500));
    z-index: 0;
}
.ms-feature-step {
    text-align: center;
    position: relative;
    z-index: 1;
}
.ms-feature-step-badge {
    width: 56px;
    height: 56px;
    border-radius: var(--ms-radius-xl);
    background: linear-gradient(135deg, var(--ms-teal-500), var(--ms-teal-600));
    color: white;
    font-weight: 900;
    font-size: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.25);
}
.ms-feature-step h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--fp-heading-color);
    transition: color 0.3s ease;
}
.ms-feature-step p {
    font-size: 0.9375rem;
    color: var(--fp-subtext-color);
    max-width: 300px;
    margin: 0 auto;
    line-height: 1.65;
    transition: color 0.3s ease;
}

/* --- Explore More Section --- */
.ms-feature-explore {
    background: var(--fp-section-alt-bg);
    padding: 5rem 0;
    transition: background 0.3s ease;
}
.ms-feature-explore-header {
    text-align: center;
    margin-bottom: 3rem;
}
.ms-feature-explore-header .ms-label {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--fp-label-color);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}
.ms-feature-explore-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--fp-heading-color);
    letter-spacing: -0.025em;
    transition: color 0.3s ease;
}
.ms-explore-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
    max-width: 800px;
    margin: 0 auto;
}
.ms-explore-card {
    display: block;
    text-decoration: none;
    background: var(--fp-card-bg);
    border: 1px solid var(--fp-card-border);
    border-radius: var(--ms-radius-xl);
    padding: 2rem 1.75rem;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}
.ms-explore-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--ms-teal-500), var(--ms-indigo-500));
    opacity: 0;
    transition: opacity 0.2s ease;
}
.ms-explore-card:hover {
    border-color: var(--fp-card-hover-border);
    box-shadow: var(--ms-shadow-lg);
    transform: translateY(-3px);
    text-decoration: none;
}
.ms-explore-card:hover::before {
    opacity: 1;
}
.ms-explore-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--ms-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    margin-bottom: 1.25rem;
    background: rgba(20, 184, 166, 0.08);
    color: var(--fp-gradient-start);
    transition: background 0.3s ease, color 0.3s ease;
}
.ms-explore-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--fp-card-heading);
    letter-spacing: -0.01em;
    transition: color 0.3s ease;
}
.ms-explore-card p {
    font-size: 0.9375rem;
    color: var(--fp-card-text);
    line-height: 1.65;
    margin: 0;
    transition: color 0.3s ease;
}
.ms-explore-card-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    margin-top: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--fp-gradient-start);
    transition: color 0.3s ease;
}
.ms-explore-card:hover .ms-explore-card-arrow i {
    transform: translateX(3px);
}
.ms-explore-card-arrow i {
    transition: transform 0.2s ease;
}

/* --- CTA Section (always dark) --- */
.ms-feature-cta {
    background: var(--ms-indigo-950);
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.ms-feature-cta::before {
    content: '';
    position: absolute;
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse at center, rgba(20, 184, 166, 0.1), transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}
.ms-feature-cta .container {
    position: relative;
    z-index: 1;
}
.ms-feature-cta h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    color: white;
    margin-bottom: 1rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}
.ms-feature-cta h2 .ms-text-gradient {
    background: linear-gradient(135deg, var(--ms-teal-400), var(--ms-teal-300));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.ms-feature-cta p {
    font-size: 1.0625rem;
    color: var(--ms-slate-400);
    max-width: 540px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

/* --- Responsive --- */
@media (max-width: 991px) {
    .ms-feature-hero {
        padding: 4rem 0 3rem;
    }
    .ms-feature-overview-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .ms-feature-overview-img {
        order: -1;
    }
    .ms-benefits-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    .ms-feature-hero h1 {
        font-size: 2rem;
    }
    .ms-feature-steps-container {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .ms-feature-steps-connector {
        display: none;
    }
    .ms-feature-step {
        display: grid;
        grid-template-columns: 60px 1fr;
        text-align: left;
        gap: 1rem;
        padding: 1.5rem 0;
        align-items: start;
    }
    .ms-feature-step-badge {
        margin-bottom: 0;
        width: 48px;
        height: 48px;
        font-size: 1.125rem;
    }
    .ms-feature-step p {
        max-width: none;
        margin: 0;
    }
    .ms-explore-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Disable hover transforms on touch devices --- */
@media (hover: none) {
    .ms-benefit-card:hover,
    .ms-explore-card:hover {
        transform: none;
        box-shadow: none;
    }
}

/* --- Scroll margin for sticky navbar --- */
.feature-page [id] {
    scroll-margin-top: 60px;
}