/* ============================================
   TABLE OF CONTENTS (ToC) - Service Pages
   Positioned after Hero, Desktop Layout Style
   ============================================ */

/* ToC Section Container */
.service-toc-section {
    padding: 3rem 0;
    background: transparent;
    border-bottom: 1px solid rgba(217, 217, 240, 0.1);
    margin-bottom: 0;
}

/* ToC Container */
.service-toc {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ToC Title */
.service-toc__title {
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(217, 217, 240, 0.7);
    margin: 0 0 1.5rem 0;
    text-align: center;
}

/* ToC List - 2 Column Layout with column flow (1 4, 2 5, 3 6) */
.service-toc__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-auto-flow: column;
    gap: 0.5rem;
    max-width: 900px;
    margin: 0 auto;
    /* grid-template-rows will be set dynamically by JS */
}

.service-toc__item {
    margin: 0;
    width: 100%;
}

/* ToC Links */
.service-toc__link {
    display: block;
    padding: 1rem 1.5rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.9375rem;
    font-weight: 400;
    line-height: 1.6;
    color: #d9d9f0;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    background: rgba(24, 24, 70, 0.5);
    border: 1px solid rgba(217, 217, 240, 0.25);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding-left: 2.5rem;
}

/* Left border indicator */
.service-toc__link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: transparent;
    border-radius: 8px 0 0 8px;
    transition: all 0.3s ease;
}

/* ToC Link Hover */
.service-toc__link:hover {
    color: #f0f0f5;
    background: rgba(70, 70, 140, 0.5);
    border-color: rgba(120, 120, 200, 0.4);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    padding-left: 2.75rem;
}

.service-toc__link:hover::before {
    background: linear-gradient(180deg, #5050a0 0%, #7070c0 100%);
    width: 4px;
}

/* ToC Link Active */
.service-toc__link.active {
    color: #f0f0f5;
    background: rgba(80, 80, 160, 0.6);
    border-color: rgba(120, 120, 200, 0.5);
    font-weight: 500;
    box-shadow: 0 4px 16px rgba(120, 120, 200, 0.3);
    padding-left: 2.75rem;
}

.service-toc__link.active::before {
    background: linear-gradient(180deg, #7070c0 0%, #5050a0 100%);
    width: 4px;
    box-shadow: 0 0 12px rgba(120, 120, 200, 0.5);
}

/* ToC Link Focus */
.service-toc__link:focus {
    outline: 2px solid rgba(120, 120, 200, 0.5);
    outline-offset: 2px;
}

/* Smooth Scroll Behavior */
html {
    scroll-behavior: smooth;
}

/* Tablet: 2 columns maintained */
@media screen and (min-width: 768px) and (max-width: 1024px) {
    .service-toc-section {
        padding: 2.5rem 0;
    }
    
    .service-toc {
        padding: 0 1.5rem;
    }
    
    .service-toc__list {
        max-width: 800px;
        gap: 0.5rem;
        grid-template-columns: repeat(2, 1fr);
        grid-auto-flow: column;
    }
    
    .service-toc__link {
        padding: 0.875rem 1.25rem;
        padding-left: 2.25rem;
        font-size: 0.875rem;
    }
    
    .service-toc__link:hover,
    .service-toc__link.active {
        padding-left: 2.5rem;
    }
}

/* Mobile: Single column for small screens */
@media screen and (max-width: 767px) {
    .service-toc-section {
        padding: 2rem 0;
        border-bottom: 1px solid rgba(217, 217, 240, 0.08);
    }
    
    .service-toc {
        padding: 0 1.25rem;
    }
    
    .service-toc__title {
        font-size: 0.8125rem;
        margin-bottom: 1.25rem;
    }
    
    .service-toc__list {
        max-width: 100%;
        gap: 0.5rem;
        grid-template-columns: 1fr;
        grid-auto-flow: row; /* Single column, linear order on mobile */
    }
    
    .service-toc__item {
        width: 100%;
    }
    
    .service-toc__link {
        padding: 0.875rem 1rem;
        padding-left: 2rem;
        font-size: 0.875rem;
    }
    
    .service-toc__link:hover,
    .service-toc__link.active {
        padding-left: 2.25rem;
    }
}

/* Desktop: Enhanced styling with 2 columns */
@media screen and (min-width: 1025px) {
    .service-toc-section {
        padding: 4rem 0;
    }
    
    .service-toc {
        padding: 0 3rem;
    }
    
    .service-toc__title {
        font-size: 0.9375rem;
        margin-bottom: 2rem;
    }
    
    .service-toc__list {
        max-width: 1000px;
        gap: 0.75rem;
        grid-template-columns: repeat(2, 1fr);
        grid-auto-flow: column;
    }
    
    .service-toc__link {
        padding: 1.125rem 2rem;
        padding-left: 3rem;
        font-size: 1rem;
    }
    
    .service-toc__link:hover {
        transform: translateX(6px);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
        padding-left: 3.25rem;
    }
    
    .service-toc__link.active {
        padding-left: 3.25rem;
    }
}

/* Animation for ToC appearance */
@keyframes tocFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-toc-section {
    animation: tocFadeIn 0.5s ease-out;
}