/* ============================================
   VSM Global Technologies - Case Studies Styles
   2-Columns Grid View with Integrated Card Media
   Matches Jost / Modern Blue-Purple Accent Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Jost:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,300;1,400;1,500&display=swap');

:root {
    --color-primary: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-primary-dark: #1e3a8a;
    --color-secondary: #2563eb;
    --color-accent: #0ea5e9;
    --color-background: #f8fafc;
    --color-surface: #ffffff;
    --color-surface-alt: #f1f5f9;
    --color-text-primary: #0f172a;
    --color-text-secondary: #334155;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --font-display: 'Jost', sans-serif;
    --font-body: 'Jost', sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;
    --spacing-2xl: 3.5rem;
    --spacing-3xl: 5rem;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 6px 20px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.12);
    --shadow-xl: 0 24px 54px rgba(15, 23, 42, 0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 100%;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1260px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   Hero Section
   ============================================ */

.cs-hero {
    position: relative;
    margin-top: 90px;
    min-height: 36vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #ffffff 0%, #f4f9ff 40%, #e0f2fe 75%, #bae6fd 100%);
}

.hero-blob {
    position: absolute;
    border-radius: 50%;
    z-index: 1;
    pointer-events: none;
    animation: heroBlobFloat ease-in-out infinite;
}

@keyframes heroBlobFloat {
    0%   { transform: translate(0px,   0px); }
    25%  { transform: translate(25px, -20px); }
    50%  { transform: translate(-15px, 25px); }
    75%  { transform: translate(20px,  15px); }
    100% { transform: translate(0px,   0px); }
}

.hero-background {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    overflow: hidden;
}

.hero-pattern {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.05) 0%, transparent 50%);
    animation: patternShift 20s ease-in-out infinite;
}

@keyframes patternShift {
    0%, 100% { transform: translate(0,0) scale(1); }
    50% { transform: translate(20px,20px) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 44px 0;
}

.hero-text { max-width: 720px; }

.hero-label {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent);
    background: rgba(255,107,53,0.15);
    padding: 6px 14px;
    border-radius: var(--radius-lg);
    margin-bottom: 12px;
    animation: slideInLeft 0.6s ease-out;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.1rem, 3.6vw, 3.1rem);
    font-weight: 500;
    line-height: 1.15;
    color: #0a0707;
    margin-bottom: 12px;
    animation: slideInLeft 0.6s ease-out 0.1s backwards;
}

.gradient-text {
    background: linear-gradient(90deg, #1d4ed8 0%, #2563eb 50%, #0284c7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

.hero-description {
    font-family: var(--font-display);
    font-size: 1.15rem;
    line-height: 1.7;
    color: rgba(39,41,50,0.9);
    margin-bottom: 16px;
    animation: slideInLeft 0.6s ease-out 0.2s backwards;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.05rem;
    font-weight: 600;
    animation: slideInLeft 0.6s ease-out 0.3s backwards;
}

.breadcrumb-link { color: #201a1a; text-decoration: none; transition: color var(--transition-base); }
.breadcrumb-link:hover { color: var(--color-accent); }
.breadcrumb-separator { color: #201a1a; }
.breadcrumb-current { color: #201a1a; font-weight: 600; }

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ============================================
   Quick Jump Navigation
   ============================================ */

.cs-jumpnav-wrap {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.cs-jumpnav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 10px;
    padding: 14px 0;
}

.cs-jumpnav a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--color-border);
    background: #ffffff;
    transition: all var(--transition-base);
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}

.cs-jumpnav a:hover,
.cs-jumpnav a:focus-visible,
.cs-jumpnav a:active,
.cs-jumpnav a.is-active {
    color: #ffffff !important;
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
}

/* ============================================
   Showcase Section & 2-Columns Grid View
   ============================================ */

.cs-showcase-section {
    padding: var(--spacing-2xl) 0 var(--spacing-3xl);
    background: var(--color-background);
}

.cs-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.25rem;
    align-items: stretch;
}

/* ============================================
   Case Study Card with Integrated Media
   ============================================ */

.cs-card {
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease;
    scroll-margin-top: 100px;
}

.cs-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
    border-color: rgba(37, 99, 235, 0.35);
}

/* Media Header inside the card */
.cs-card-media {
    position: relative;
    width: 100%;
    height: 300px;
    background: #0b1120;
    overflow: hidden;
}

.cs-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.cs-card:hover .cs-card-media img {
    transform: scale(1.05);
}

.cs-card-media-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.05) 50%, rgba(15, 23, 42, 0.6) 100%);
    pointer-events: none;
}

.cs-card-icon-badge {
    position: absolute;
    bottom: 16px;
    left: 16px;
    z-index: 2;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.65);
    border: 1.5px solid rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-md);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.cs-card-icon-badge svg {
    width: 22px;
    height: 22px;
}

/* Card Body Content */
.cs-card-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 2rem 2rem 2.25rem;
    background: #ffffff;
}

.cs-card-eyebrow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 10px;
}

.cs-index {
    font-family: var(--font-display);
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(29, 78, 216, 0.08);
    padding: 3px 10px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.cs-category {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.cs-card-title {
    font-family: var(--font-display);
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.25;
    margin-bottom: 6px;
}

.cs-card-tagline {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.cs-card-overview {
    font-size: 0.96rem;
    color: var(--color-text-secondary);
    line-height: 1.62;
    margin-bottom: 16px;
}

.cs-card-block {
    margin-bottom: 14px;
}

.cs-block-title {
    font-family: var(--font-display);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.cs-challenge-list {
    list-style: none;
    margin-bottom: 8px;
}

.cs-challenge-list li {
    position: relative;
    padding-left: 18px;
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: 5px;
}

.cs-challenge-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #ef4444;
}

.cs-solution-desc {
    font-size: 0.94rem;
    color: var(--color-text-secondary);
    line-height: 1.58;
    margin-bottom: 8px;
}

.cs-features-list {
    list-style: none;
    margin-bottom: 10px;
}

.cs-features-list li {
    position: relative;
    padding-left: 18px;
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    line-height: 1.52;
    margin-bottom: 5px;
}

.cs-features-list li strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.cs-features-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

.cs-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 8px;
}

.cs-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    background: rgba(29, 78, 216, 0.07);
    border: 1px solid rgba(29, 78, 216, 0.14);
    padding: 5px 11px;
    border-radius: var(--radius-sm);
}

.cs-results-box {
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.05) 0%, rgba(14, 165, 233, 0.05) 100%);
    border: 1px solid rgba(29, 78, 216, 0.12);
    border-radius: var(--radius-md);
    padding: 12px 14px;
}

.cs-results-box ul {
    list-style: none;
}

.cs-results-box li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--color-text-primary);
    line-height: 1.48;
    margin-bottom: 6px;
}

.cs-results-box li:last-child {
    margin-bottom: 0;
}

.cs-results-box li svg {
    width: 16px;
    height: 16px;
    color: #10b981;
    flex-shrink: 0;
    margin-top: 2px;
}

.cs-card-footline {
    margin-top: auto;
    padding-top: 16px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-style: italic;
    color: var(--color-primary-dark);
    border-left: 3px solid var(--color-accent);
    padding-left: 12px;
}

/* ============================================
   Closing CTA
   ============================================ */

.cs-cta {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-secondary) 100%);
    text-align: center;
}

.cs-cta h2 {
    font-family: var(--font-display);
    font-size: clamp(1.9rem, 3.7vw, 2.6rem);
    font-weight: 500;
    color: #ffffff;
    margin-bottom: 12px;
}

.cs-cta p {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: var(--spacing-lg);
}

.cs-cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: #ffffff;
    color: var(--color-primary-dark);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1.05rem;
    transition: all var(--transition-base);
}

.cs-cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 991px) {
    .cs-cards-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cs-card-media {
        height: 260px;
    }

    .cs-card-body {
        padding: 1.75rem 1.5rem;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-3xl: 3rem;
        --spacing-2xl: 2rem;
    }

    .cs-hero { min-height: 32vh; }
    .hero-content { padding: 28px 0; }
    .hero-title { font-size: 2rem; }
    .hero-description { font-size: 1rem; }

    .cs-jumpnav { gap: 8px; padding: 10px 0; }
    .cs-jumpnav a { font-size: 0.88rem; padding: 7px 12px; }

    .cs-showcase-section { padding: var(--spacing-xl) 0; }
}

@media (max-width: 576px) {
    .container { padding: 0 var(--spacing-md); }
    
    .cs-card-media {
        height: 220px;
    }

    .cs-card-body {
        padding: 1.4rem 1.2rem;
    }

    .cs-card-title {
        font-size: 1.4rem;
    }
}

/* ============================================
   Accessibility & Motion
   ============================================ */

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

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}