/**
 * Infusion Solutions - Enterprise Responsive & Mobile Optimization Master Stylesheet
 * 100% Self-Contained, Framework-Independent, High Performance
 */

/* ==========================================================================
   1. Base Mobile & Fluid Layout Foundations
   ========================================================================== */

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
    width: 100%;
    position: relative;
}

/* Prevent horizontal overflow on media and containers */
img, svg, video, canvas, audio, iframe, embed, object {
    max-width: 100%;
    height: auto;
}

/* Touch Device Interactions */
@media (hover: none) and (pointer: coarse) {
    a, button, input, select, textarea, .filter-btn, .mobile-link {
        -webkit-tap-highlight-color: transparent;
    }
}

/* Body Scroll Lock for Drawers */
body.drawer-open,
body.admin-sidebar-open {
    overflow: hidden !important;
    touch-action: none;
}

/* ==========================================================================
   2. Mobile Drawer Navigation & Backdrop Overlay
   ========================================================================== */

/* Fullscreen Dimming Backdrop */
.mobile-drawer-backdrop {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(11, 19, 43, 0.72);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer-backdrop.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Off-Canvas Slide Drawer */
.mobile-drawer {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 88%;
    max-width: 380px;
    height: 100%;
    background: #ffffff;
    z-index: 1050;
    transform: translateX(105%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -10px 0 35px rgba(0, 0, 0, 0.28);
    overflow: hidden;
    visibility: hidden;
}

.mobile-drawer.active {
    transform: translateX(0);
    visibility: visible;
}

/* Drawer Header */
.mobile-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.15rem 1.25rem;
    border-bottom: 1px solid var(--border);
    background: #ffffff;
    flex-shrink: 0;
}

.drawer-brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
}

.drawer-brand img {
    height: 36px;
    width: auto;
    object-fit: contain;
}

.drawer-close {
    background: #f1f5f9;
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.drawer-close:hover,
.drawer-close:active {
    background: #e2e8f0;
    color: #ef4444;
}

/* Drawer Content Scroll Area */
.mobile-drawer-content {
    flex-grow: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* Drawer Nav List */
.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.mobile-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 0.9rem;
    border-radius: var(--radius-md);
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--secondary);
    text-decoration: none;
    transition: all 0.15s ease;
    border: 1px solid transparent;
}

.mobile-link:hover,
.mobile-link:active {
    background: rgba(0, 180, 216, 0.08);
    color: var(--primary-dark);
    border-color: rgba(0, 180, 216, 0.15);
}

.mobile-link.active {
    background: rgba(0, 180, 216, 0.12);
    color: var(--primary-dark);
    font-weight: 700;
}

/* Services Mobile Accordion */
.mobile-accordion {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    background: #f8fafc;
}

.mobile-accordion-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0.9rem;
    font-weight: 600;
    font-size: 1.02rem;
    color: var(--secondary);
    cursor: pointer;
    user-select: none;
    transition: background 0.15s ease;
}

.mobile-accordion-toggle:active {
    background: #e2e8f0;
}

.mobile-toggle-icon {
    font-size: 0.85rem;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--primary-dark);
    font-weight: 800;
}

.mobile-submenu {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem 0.75rem 1rem;
    border-top: 1px solid var(--border);
    background: #ffffff;
}

.mobile-submenu.is-open {
    display: flex !important;
}

.mobile-submenu a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.92rem;
    color: var(--text-main);
    text-decoration: none;
    padding: 0.55rem 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.15s ease;
}

.mobile-submenu a:hover,
.mobile-submenu a:active {
    background: var(--light);
    color: var(--primary-dark);
}

.mobile-submenu-all {
    margin-top: 0.25rem;
    font-weight: 750 !important;
    color: var(--primary-dark) !important;
    border-top: 1px dashed var(--border);
    padding-top: 0.65rem !important;
}

/* Drawer CTA Button */
.mobile-drawer-cta {
    margin-top: 0.25rem;
}

.mobile-drawer-cta .btn {
    width: 100%;
    justify-content: center;
    padding: 0.85rem 1rem;
    font-size: 1rem;
}

/* Global Hubs in Mobile Drawer */
.mobile-drawer-contact {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem 1.15rem;
}

.drawer-contact-title {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.65rem;
}

.drawer-contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.drawer-contact-links a {
    color: var(--text-main);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.drawer-contact-links a:active {
    color: var(--primary-dark);
}

.drawer-portal-link {
    margin-top: 0.5rem;
    padding-top: 0.65rem;
    border-top: 1px solid var(--border);
    font-weight: 700;
    color: var(--secondary) !important;
}

/* ==========================================================================
   3. Common Responsive Components & Helper Classes
   ========================================================================== */

/* Responsive Card & Container Paddings */
.responsive-form-card,
.responsive-legal-card {
    padding: 3rem;
    transition: padding 0.2s ease;
}

/* Service Detail 2-Column Responsive Layout */
.service-detail-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3.5rem;
    align-items: start;
}

/* Company Page Grids */
.company-overview-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

.philosophy-card {
    padding: 2.5rem;
}

/* Support Page Hubs Grid */
.support-hubs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

/* Search Form Responsive on Services */
.search-form-responsive {
    display: flex;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
    gap: 0.5rem;
}

/* Hero Stats Desktop Positioning */
.hero-stats-wrapper {
    position: relative;
    width: 100%;
}

/* Responsive Table Container */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    position: relative;
}

.table-responsive::-webkit-scrollbar {
    height: 6px;
}

.table-responsive::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

/* ==========================================================================
   4. Media Query: Laptops & Medium Screens (max-width: 1200px)
   ========================================================================== */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 1.25rem;
    }

    .service-detail-layout {
        gap: 2.5rem;
    }

    .company-overview-grid {
        gap: 2.5rem;
    }

    .footer-grid {
        gap: 2.5rem;
    }
}

/* ==========================================================================
   5. Media Query: Tablets & Landscape Phones (max-width: 992px)
   ========================================================================== */
@media (max-width: 992px) {
    /* Navbar & Header */
    .site-header .navbar {
        height: 72px;
    }

    .nav-links,
    .nav-btn-desktop {
        display: none !important;
    }

    .mobile-nav-toggle {
        display: flex !important;
    }

    .brand-logo img {
        height: 42px;
    }

    .brand-text {
        font-size: 1.25rem;
    }

    /* Hero Section Responsive */
    .hero-section {
        padding: 4rem 0 3rem;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 2.75rem;
        text-align: left;
    }

    .hero-visual {
        order: -1;
        max-width: 600px;
        margin: 0 auto;
        width: 100%;
    }

    .hero-stats-wrapper {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
        margin-top: 1.25rem;
    }

    .hero-stat-card {
        position: static !important;
        margin: 0 !important;
        animation: none !important;
        width: 100% !important;
        transform: none !important;
        box-shadow: var(--shadow-sm);
    }

    /* Grids Collapse */
    .service-detail-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .company-overview-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .philosophy-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .support-hubs-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-bottom: 3rem;
    }

    .case-study-card {
        grid-template-columns: 1fr;
    }

    .case-study-media {
        min-height: 240px;
        max-height: 360px;
        padding: 1.5rem;
    }

    .case-study-content {
        padding: 2.25rem 1.75rem;
    }

    /* Footer Grid */
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }

    /* Form Grids on Tablets */
    .form-grid-2,
    .form-grid-3 {
        grid-template-columns: 1fr 1fr;
        gap: 1.25rem;
    }

    /* Admin Sidebar Off-Canvas Support */
    .sidebar-toggle-btn {
        display: flex !important;
    }

    .admin-sidebar {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        height: 100vh !important;
        width: 280px !important;
        max-width: 85vw !important;
        z-index: 1050 !important;
        transform: translateX(-100%) !important;
        box-shadow: 10px 0 40px rgba(0, 0, 0, 0.35) !important;
        transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
        visibility: hidden;
    }

    .admin-wrapper.sidebar-open .admin-sidebar {
        transform: translateX(0) !important;
        visibility: visible !important;
    }

    .sidebar-backdrop {
        position: fixed !important;
        inset: 0 !important;
        background: rgba(11, 19, 43, 0.72) !important;
        backdrop-filter: blur(3px) !important;
        -webkit-backdrop-filter: blur(3px) !important;
        z-index: 1040 !important;
        display: block !important;
        opacity: 0 !important;
        visibility: hidden !important;
        pointer-events: none !important;
        transition: opacity 0.3s ease, visibility 0.3s ease !important;
    }

    .admin-wrapper.sidebar-open .sidebar-backdrop {
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: auto !important;
    }

    .sidebar-close-btn {
        display: flex !important;
    }

    .admin-grid-2col {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* ==========================================================================
   6. Media Query: Mobile Phones & Phablets (max-width: 768px)
   ========================================================================== */
@media (max-width: 768px) {
    /* Header & Top Bar */
    .top-bar {
        display: none !important;
    }

    .site-header .navbar {
        height: 64px;
    }

    .brand-logo img {
        height: 36px;
    }

    .brand-text {
        font-size: 1.15rem;
    }

    /* Section Padding & Headings */
    .section {
        padding: 2.75rem 0;
    }

    .section-header {
        margin-bottom: 2rem;
    }

    h1 {
        font-size: 2.1rem;
    }

    h2 {
        font-size: 1.65rem;
    }

    h3 {
        font-size: 1.3rem;
    }

    .hero-title {
        font-size: 2.1rem;
        line-height: 1.22;
    }

    .hero-desc {
        font-size: 1.02rem;
        line-height: 1.65;
        margin-bottom: 1.75rem;
    }

    /* Hero Buttons */
    .hero-btns {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }

    .hero-btns .btn {
        width: 100%;
        justify-content: center;
        padding: 0.85rem 1.25rem;
        font-size: 1rem;
    }

    .hero-partners {
        margin-top: 2rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    /* Interactive Filter Tabs - Horizontal Swipe Chip Bar */
    .filter-tabs {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        gap: 0.5rem;
        padding-bottom: 8px;
        margin-bottom: 1.75rem;
    }

    .filter-tabs::-webkit-scrollbar {
        display: none;
    }

    .filter-btn {
        flex-shrink: 0;
        padding: 0 1.15rem;
        height: 42px;
        font-size: 0.88rem;
        white-space: nowrap;
        border-radius: var(--radius-full);
    }

    /* Grids to 1 Column */
    .services-grid,
    .offices-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .service-card {
        padding: 1.5rem 1.25rem;
    }

    .service-card .service-footer .btn {
        padding: 0.75rem 1rem;
        font-size: 0.92rem;
    }

    /* Client Partner Logos Grid */
    .clients-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 0.85rem;
    }

    .client-logo-box {
        height: 72px;
        padding: 0.75rem;
    }

    /* Responsive Cards & Containers */
    .responsive-form-card,
    .responsive-legal-card,
    .philosophy-card,
    .office-card {
        padding: 1.5rem 1.25rem !important;
    }

    /* Form Fields & Grids */
    .form-grid-2,
    .form-grid-3 {
        grid-template-columns: 1fr !important;
        gap: 1rem;
    }

    .form-control {
        font-size: 16px !important; /* Prevents auto-zoom in mobile Safari */
        padding: 0.75rem 0.9rem;
    }

    /* Search Form on Services */
    .search-form-responsive {
        flex-direction: column;
        width: 100%;
    }

    .search-form-responsive .btn {
        width: 100%;
        justify-content: center;
        padding: 0.75rem 1rem;
    }

    /* Admin Topbar & Content on Mobile */
    .admin-topbar {
        padding: 0 0.85rem;
        height: 58px;
    }

    .topbar-left {
        gap: 0.65rem;
        min-width: 0;
        flex: 1 1 auto;
    }

    .breadcrumb {
        font-size: 0.82rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .topbar-right {
        gap: 0.5rem;
    }

    .topbar-user-details {
        display: none !important;
    }

    .topbar-user-chip {
        padding: 2px 4px;
        background: transparent;
        border: none;
    }

    .topbar-btn {
        padding: 0.4rem 0.55rem;
        font-size: 0.82rem;
    }

    .topbar-btn-text {
        display: none !important;
    }

    .admin-content {
        padding: 1rem 0.85rem;
    }

    .page-header-box {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        margin-bottom: 1.25rem;
    }

    .page-header-box > div:last-child {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .page-header-box > div:last-child .btn-adm {
        flex: 1 1 calc(50% - 0.5rem);
        justify-content: center;
        text-align: center;
    }

    .stat-cards-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.85rem;
        margin-bottom: 1.5rem;
    }

    .stat-card-box {
        padding: 1rem;
    }

    .stat-card-value {
        font-size: 1.35rem;
    }

    /* Admin Tabs Horizontal Scroll */
    .admin-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        gap: 0.35rem;
        padding-bottom: 4px;
        margin-bottom: 1.25rem;
    }

    .admin-tabs::-webkit-scrollbar {
        display: none;
    }

    .admin-tab {
        flex-shrink: 0;
        padding: 0.6rem 0.95rem;
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .admin-table {
        min-width: 600px;
    }

    .admin-card-header {
        padding: 1rem 1.15rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .admin-card-header > a,
    .admin-card-header > button {
        width: 100%;
        justify-content: center;
    }

    .admin-card-body {
        padding: 1.25rem 1rem;
    }
}

/* ==========================================================================
   7. Media Query: Extra Small Devices (max-width: 480px)
   ========================================================================== */
@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .brand-text {
        font-size: 1.05rem;
    }

    .hero-title {
        font-size: 1.85rem;
    }

    h1 {
        font-size: 1.85rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    /* Single column stat cards */
    .stat-cards-grid {
        grid-template-columns: 1fr;
    }

    .hero-stats-wrapper {
        grid-template-columns: 1fr;
    }

    /* Footer Single Column */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .footer-bottom-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    /* Callout CTA Sections */
    section[style*="background: var(--secondary)"] {
        padding: 3rem 1rem !important;
    }

    /* Admin Action Buttons Full Width */
    .page-header-box > div:last-child .btn-adm {
        flex: 1 1 100%;
    }

    /* Admin Login Box Mobile Clean-Up */
    .login-body {
        padding: 1rem !important;
    }

    .login-header {
        padding: 2rem 1.25rem 1.25rem !important;
    }

    .login-body-content {
        padding: 1.25rem !important;
    }
}

/* Responsive Rules for Pillars, Methodology & Differentiators */
@media (max-width: 1024px) {
    .pillars-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
    .differentiators-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
}

@media (max-width: 640px) {
    .pillars-grid {
        grid-template-columns: 1fr;
    }
    .methodology-grid {
        grid-template-columns: 1fr;
    }
    .differentiators-grid {
        grid-template-columns: 1fr;
    }
    .pillar-card, .methodology-card, .differentiator-card {
        padding: 1.5rem 1.25rem;
    }
}