:root {
    --core-bg: #F9FAFB;
    --core-surface: #F3F4F6;
    --core-surface-lowest: #FFFFFF;
    --core-surface-highest: #E5E7EB;
    --core-primary: #1E3A8A;
    --core-primary-container: #1e40af;
    --core-accent: #F97316;
    --core-text: #111d27;
    --core-text-muted: #5b6978;
    --core-border: rgba(194, 198, 210, 0.15);
    --font-display: "Space Grotesk", sans-serif;
    --font-body: "Manrope", sans-serif;
    --shadow-ambient: 0 24px 32px rgba(17, 29, 39, 0.06);
}

/* --- Base Reset --- */
html {
    color-scheme: light;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--core-bg);
    color: var(--core-text);
    -webkit-font-smoothing: antialiased;
    margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--core-primary);
    letter-spacing: -0.025em;
    margin: 0;
}

/* --- Focus States (Accessibility) --- */
:focus-visible {
    outline: 2px solid var(--core-primary);
    outline-offset: 2px;
}

/* --- Components --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 0.375rem;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    gap: 0.5rem;
    cursor: pointer;
    text-decoration: none;
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(to bottom right, var(--core-primary), var(--core-primary-container));
    color: #ffffff;
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-ambient);
}

.btn-secondary {
    background-color: var(--core-accent);
    color: #ffffff;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

.btn-secondary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-ambient);
}

.btn-outline {
    background-color: transparent;
    color: var(--core-primary);
    border: 1px solid #d1d5db; /* Stronger border for visibility (gray-300) */
}

.btn-outline:hover {
    border-color: var(--core-primary);
    color: var(--core-primary);
    background-color: rgba(30, 58, 138, 0.05);
}

/* Mobile Optimization: Explicit Solid Surface for Header & Drawer */
@media (max-width: 1023px) {
    header {
        background-color: #ffffff !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }
}

.mobile-drawer-surface {
    background-color: #ffffff !important;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
    opacity: 1 !important;
}

/* Sidebar & Drawer Header Solid Fix */
.drawer-header {
    background-color: #ffffff !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-bottom: 1px solid var(--core-border);
}

.action-link {
    color: var(--core-accent);
    font-family: var(--font-body);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    background: transparent;
    border: none;
    text-decoration: none;
    transition: color 0.2s ease;
}

.action-link:hover {
    opacity: 0.8;
}

.service-card {
    background-color: var(--core-surface-lowest);
    border-radius: 0.5rem;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-ambient);
    min-height: 350px;
}

/* Home index override for more items */
.index-card {
    padding: 1.25rem;
    min-height: 250px;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(1rem);
    background-color: var(--core-surface-lowest);
    border: 1px solid var(--core-border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    width: 600px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-ambient);
    z-index: 100;
}

.dropdown:hover .dropdown-menu,
.dropdown-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* --- Skip Link --- */
.sr-only-focusable {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
    white-space: nowrap;
}

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: .5rem 1.25rem;
    margin: .25rem;
    overflow: visible;
    clip: auto;
    background: var(--core-primary);
    color: #fff;
    border-radius: .375rem;
    font-weight: 700;
    z-index: 9999;
    display: inline-block;
}

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

/* --- Utility Classes --- */
.hide-scrollbar::-webkit-scrollbar {
    display: none;
}

.hide-scrollbar {
    -ms-overflow-style: none; /* IE and Edge */
    scrollbar-width: none; /* Firefox */
}

/* --- Scrollable Ribbon Styles --- */
.scroll-track {
    display: flex;
    gap: 1.5rem;
    padding: 10px 0;
    overflow-x: auto;
    scroll-behavior: smooth;
}

.service-card-item {
    flex: 0 0 350px;
}