/* ==========================================================================
   RED-F STUDIOS - CASE STUDY STYLESHEET: VINAY HARDWARE
   Fonts & Design System matching Red-F Studios (Space Grotesk & Inter)
   ========================================================================== */

:root {
    --bg-dark: #0a0a0c;
    --bg-dark-card: #131317;
    --bg-dark-border: rgba(255, 255, 255, 0.08);
    --bg-light: #ffffff;
    --bg-light-alt: #f8f9fa;
    --bg-light-card: #f3f4f6;
    --border-light: #e5e7eb;
    
    --text-white: #ffffff;
    --text-gray-light: #9ca3af;
    --text-dark: #111827;
    --text-muted: #6b7280;
    
    --brand-red: #ff3e3e;
    --brand-red-hover: #e62222;
    --brand-red-light: rgba(255, 62, 62, 0.08);
    --brand-red-border: rgba(255, 62, 62, 0.2);
    
    --whatsapp-green: #25d366;
    --whatsapp-light: #e8f8f0;
    
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    --font-hindi: 'Noto Sans Devanagari', sans-serif;
    
    --container-width: 1240px;
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    letter-spacing: -0.025em;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* Common Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================================================
   HEADER / NAVBAR
   ========================================================================== */
.studio-header {
    background-color: rgba(10, 10, 12, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--bg-dark-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.studio-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.studio-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-white);
}

.studio-logo .dot {
    color: var(--brand-red);
    font-size: 1.3rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    color: var(--text-gray-light);
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-white);
}

.btn-pill-red {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--brand-red);
    color: var(--text-white);
    padding: 10px 22px;
    border-radius: 9999px;
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border: 1px solid var(--brand-red);
    transition: var(--transition);
}

.btn-pill-red:hover {
    background-color: var(--brand-red-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(255, 62, 62, 0.4);
}

.btn-pill-red svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.case-hero {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 80% 20%, rgba(255, 62, 62, 0.08) 0%, transparent 40%),
        radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 100% 100%, 24px 24px;
    padding: 48px 0 80px 0;
    color: var(--text-white);
    border-bottom: 1px solid var(--bg-dark-border);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    color: var(--text-gray-light);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 32px;
}

.back-link:hover {
    color: var(--text-white);
    transform: translateX(-3px);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: center;
}

.hero-info h1 {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.0;
    letter-spacing: -0.03em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.hero-subtitle {
    color: var(--brand-red);
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.hero-tagline {
    font-family: var(--font-main);
    color: #d1d5db;
    font-size: 1.15rem;
    line-height: 1.55;
    font-weight: 400;
    max-width: 540px;
    margin-bottom: 36px;
}

/* Metadata Grid */
.meta-grid {
    display: grid;
    grid-template-columns: 110px 1fr;
    row-gap: 14px;
    column-gap: 16px;
    padding: 24px 0;
    border-top: 1px solid var(--bg-dark-border);
    border-bottom: 1px solid var(--bg-dark-border);
    margin-bottom: 36px;
    font-size: 0.92rem;
}

.meta-label {
    color: var(--text-gray-light);
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.78rem;
}

.meta-value {
    color: var(--text-white);
    font-family: var(--font-main);
    font-weight: 500;
}

/* Hero Phone Mockup */
.hero-mockup-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-mockup-frame {
    width: 320px;
    border-radius: 40px;
    background: #18181b;
    padding: 10px;
    box-shadow: 
        0 25px 60px -15px rgba(0, 0, 0, 0.7),
        0 0 0 1px rgba(255, 255, 255, 0.12),
        0 0 35px rgba(255, 62, 62, 0.18);
    position: relative;
}

.phone-screen {
    border-radius: 32px;
    background: #0f172a;
    overflow: hidden;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    height: 520px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.phone-notch {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 18px;
    background: #18181b;
    border-radius: 10px;
    z-index: 10;
}

.mock-app-header {
    background: #111827;
    padding: 30px 14px 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mock-app-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #22c55e;
}

.mock-app-logo img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
}

.mock-app-menu {
    display: flex;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.mock-app-menu span {
    display: block;
    width: 18px;
    height: 2px;
    background: #22c55e;
    border-radius: 2px;
}

.mock-app-body {
    padding: 14px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: linear-gradient(180deg, #111827 0%, #030712 100%);
    flex: 1;
    font-size: 0.8rem;
}

.mock-location-tag {
    font-size: 0.72rem;
    color: #ef4444;
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
}

.mock-hero-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 12px;
    padding: 12px;
    text-align: center;
}

.mock-hero-box h4 {
    font-size: 0.95rem;
    color: #ffffff;
    margin-bottom: 2px;
}

.mock-hero-box h3 {
    font-size: 1.15rem;
    color: #eab308;
    margin-bottom: 6px;
}

.mock-hero-box p {
    font-size: 0.72rem;
    color: #9ca3af;
    line-height: 1.35;
    margin-bottom: 10px;
}

.mock-chips {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.mock-chip {
    font-size: 0.68rem;
    background: rgba(34, 197, 94, 0.12);
    color: #4ade80;
    padding: 3px 8px;
    border-radius: 20px;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.mock-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-bottom: 8px;
}

.mock-btn-blue {
    background: #0284c7;
    color: #fff;
    padding: 6px;
    border-radius: 8px;
    font-size: 0.72rem;
    font-weight: 600;
    text-align: center;
}

.mock-btn-call {
    background: #16a34a;
    color: #fff;
    padding: 6px;
    border-radius: 8px;
    font-size: 0.72rem;
    font-weight: 600;
    text-align: center;
}

.mock-btn-whatsapp-full {
    background: #22c55e;
    color: #fff;
    padding: 8px;
    border-radius: 8px;
    font-size: 0.76rem;
    font-weight: 700;
    text-align: center;
}

/* ==========================================================================
   MAIN CASE STUDY BODY & STICKY SIDEBAR LAYOUT
   ========================================================================== */
.case-body-wrapper {
    background-color: var(--bg-light);
    padding: 64px 0 96px 0;
}

.case-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 56px;
    align-items: start;
}

/* Sticky Sidebar */
.case-sidebar {
    position: sticky;
    top: 100px;
    padding-right: 16px;
}

.sidebar-title {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 18px;
}

.sidebar-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-main);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 4px 0;
    transition: var(--transition);
}

.sidebar-link .nav-num {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    color: #9ca3af;
    min-width: 18px;
    transition: var(--transition);
}

.sidebar-link:hover {
    color: var(--text-dark);
}

.sidebar-link.active {
    color: var(--brand-red);
    font-weight: 600;
}

.sidebar-link.active .nav-num {
    color: var(--brand-red);
}

.sidebar-top-link {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
}

/* ==========================================================================
   CONTENT SECTIONS
   ========================================================================== */
.case-content {
    display: flex;
    flex-direction: column;
    gap: 72px;
}

.case-section {
    scroll-margin-top: 110px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-light);
}

.case-section:last-child {
    border-bottom: none;
}

.section-header-badge {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 16px;
}

.section-index {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--brand-red);
    line-height: 1;
}

.section-heading {
    font-family: var(--font-heading);
    font-size: 1.55rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    text-transform: uppercase;
    color: var(--text-dark);
}

.section-lead-text {
    font-family: var(--font-main);
    font-size: 1.05rem;
    color: #374151;
    line-height: 1.65;
    margin-bottom: 14px;
}

.section-subtext {
    font-family: var(--font-main);
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 24px;
}

/* --- Section 01: Context --- */
.context-grid {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 32px;
    align-items: center;
}

.context-image-box {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-light);
}

.context-image-box img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    display: block;
}

/* --- Section 02: Problem --- */
.problem-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.problem-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: var(--bg-light-alt);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 16px 20px;
    transition: var(--transition);
}

.problem-card:hover {
    border-color: #cbd5e1;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.problem-num-badge {
    min-width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1.5px solid var(--brand-red);
    color: var(--brand-red);
    font-family: var(--font-heading);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    flex-shrink: 0;
}

.problem-card p {
    font-family: var(--font-main);
    font-size: 0.92rem;
    font-weight: 500;
    color: #374151;
    line-height: 1.45;
    margin: 0;
}

/* --- Section 03: Approach --- */
.approach-layout {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 24px;
    margin-top: 20px;
}

.why-whatsapp-card {
    background: var(--whatsapp-light);
    border: 1px solid rgba(37, 211, 102, 0.25);
    border-radius: 16px;
    padding: 24px;
}

.why-whatsapp-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.why-whatsapp-header svg {
    width: 28px;
    height: 28px;
    fill: var(--whatsapp-green);
}

.why-whatsapp-header h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: #065f46;
}

.why-whatsapp-card p {
    font-family: var(--font-main);
    font-size: 0.92rem;
    color: #047857;
    line-height: 1.55;
    margin-bottom: 12px;
}

.why-whatsapp-card p:last-child {
    margin-bottom: 0;
}

.approach-features-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.approach-feature-item {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-light-alt);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 14px 18px;
    font-family: var(--font-main);
    font-size: 0.92rem;
    font-weight: 600;
    color: #374151;
    transition: var(--transition);
}

.approach-feature-item:hover {
    border-color: #cbd5e1;
    background: #ffffff;
}

.approach-feature-item .icon {
    font-size: 1.25rem;
}

/* --- Section 04: Design & UX --- */
.design-preview-box {
    margin-top: 24px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid #1f2937;
    background: #0f172a;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12);
}

.design-browser-bar {
    background: #1e293b;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.browser-dots {
    display: flex;
    gap: 6px;
}

.browser-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.browser-dot.red { background: #ef4444; }
.browser-dot.yellow { background: #f59e0b; }
.browser-dot.green { background: #10b981; }

.browser-url {
    background: rgba(0, 0, 0, 0.3);
    padding: 3px 12px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: #94a3b8;
    flex: 1;
    max-width: 280px;
}

.design-preview-content {
    padding: 24px;
    color: #ffffff;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: center;
}

.design-preview-info h4 {
    color: #ef4444;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.design-preview-info h3 {
    font-family: var(--font-heading);
    font-size: 1.45rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #facc15;
}

.design-preview-info p {
    font-family: var(--font-main);
    font-size: 0.88rem;
    color: #cbd5e1;
    line-height: 1.4;
    margin-bottom: 12px;
}

.design-preview-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.preview-tag {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
}

/* --- Section 05: Challenges --- */
.challenges-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 20px;
}

.challenge-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--bg-light-alt);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 18px 22px;
    transition: var(--transition);
}

.challenge-item:hover {
    border-color: #cbd5e1;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.challenge-icon-badge {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 62, 62, 0.1);
    color: var(--brand-red);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.challenge-text h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.challenge-text p {
    font-family: var(--font-main);
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.45;
    margin: 0;
}

/* --- Section 06: Solution --- */
.solution-flow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
    position: relative;
}

.solution-step-card {
    background: #0f172a;
    border: 1px solid #1e293b;
    border-radius: 20px;
    padding: 16px;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.solution-mini-screen {
    background: #1e293b;
    border-radius: 12px;
    padding: 14px;
    min-height: 220px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    margin-bottom: 14px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.mini-screen-header {
    font-size: 0.72rem;
    color: #94a3b8;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 6px;
    display: flex;
    justify-content: space-between;
}

.mini-screen-body {
    text-align: center;
    padding: 10px 0;
}

.mini-screen-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: #facc15;
    margin-bottom: 4px;
}

.mini-screen-desc {
    font-family: var(--font-main);
    font-size: 0.72rem;
    color: #94a3b8;
    line-height: 1.3;
}

.mini-product-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 8px;
    margin-bottom: 6px;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
}

.mini-product-item .dot-pipe {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #38bdf8;
}

.mini-chat-bubble {
    background: #065f46;
    color: #d1fae5;
    padding: 8px 10px;
    border-radius: 10px 10px 0 10px;
    font-size: 0.72rem;
    text-align: left;
    margin-top: 10px;
    line-height: 1.3;
}

.step-label {
    text-align: center;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    color: #e2e8f0;
}

/* --- Section 07: Outcome --- */
.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.outcome-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-light-alt);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 16px 20px;
    font-family: var(--font-main);
    font-size: 0.95rem;
    font-weight: 600;
    color: #1f2937;
    transition: var(--transition);
}

.outcome-card:hover {
    border-color: #cbd5e1;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.outcome-check-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255, 62, 62, 0.12);
    color: var(--brand-red);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 800;
    flex-shrink: 0;
}

/* --- Section 08: What We Learned --- */
.learnings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 24px;
}

.learning-quote-card {
    background: var(--bg-light-alt);
    border-left: 4px solid var(--brand-red);
    border-radius: 0 16px 16px 0;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.quote-icon {
    font-size: 3.5rem;
    color: var(--brand-red);
    line-height: 1;
    margin-bottom: 8px;
    font-family: var(--font-heading), Georgia, serif;
}

.quote-phrase {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-dark);
    line-height: 1.45;
}

.client-feedback-card {
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.feedback-tag {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--brand-red);
    margin-bottom: 12px;
}

.feedback-quote {
    font-family: var(--font-hindi), var(--font-main);
    font-size: 0.98rem;
    color: #374151;
    line-height: 1.65;
    margin-bottom: 16px;
    font-style: italic;
}

.feedback-author {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-dark);
}

.feedback-role {
    font-family: var(--font-main);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ==========================================================================
   CALL TO ACTION BANNER & FOOTER
   ========================================================================== */
.cta-banner-section {
    background-color: #0b0b0e;
    background-image: 
        radial-gradient(circle at 10% 50%, rgba(255, 62, 62, 0.1) 0%, transparent 40%),
        radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 100% 100%, 20px 20px;
    padding: 72px 0;
    color: var(--text-white);
    border-top: 1px solid var(--bg-dark-border);
}

.cta-banner-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: 2.3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.cta-title span {
    color: var(--brand-red);
}

.cta-subtext {
    font-family: var(--font-main);
    font-size: 0.95rem;
    color: var(--text-gray-light);
    max-width: 480px;
    line-height: 1.5;
}

.studio-footer {
    background-color: #070709;
    padding: 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #6b7280;
    font-family: var(--font-main);
    font-size: 0.85rem;
}

.footer-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
    .case-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .case-sidebar {
        display: none;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-mockup-wrapper {
        order: -1;
    }
    
    .hero-info h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-info h1 {
        font-size: 2.2rem;
    }
    
    .context-grid,
    .approach-layout,
    .design-preview-content,
    .solution-flow,
    .problem-cards-grid,
    .outcomes-grid,
    .learnings-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-banner-content {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .cta-subtext {
        text-align: center;
    }
}