/* ==========================================================================
   Vikas Tech Services - Modern Personal & Portfolio Styling
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Design Tokens
   -------------------------------------------------------------------------- */
:root {
    /* Color Palette */
    --bg-outer: #F4F1EA;          /* Warm neutral outer frame background */
    --bg-canvas: #FFFFFF;         /* Crisp white central card canvas */
    --bg-card-subtle: #FAFAFA;    /* Light grey card background */
    --bg-dark-card: #0F172A;      /* Dark slate code card */
    
    --text-primary: #111827;      /* High contrast body black */
    --text-secondary: #4B5563;    /* Muted text grey */
    --text-tertiary: #6B7280;     /* Light muted text */
    
    --accent-primary: #0F172A;    /* Primary dark accent button */
    --accent-blue: #0284C7;       /* Tech blue highlight */
    --accent-green: #10B981;      /* Status online green */
    --accent-hover: #1E293B;      /* Button hover state */

    --border-color: #E5E7EB;      /* Subtle border */
    --border-light: #F3F4F6;
    
    /* Typography */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing & Radii */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.08);
    --shadow-stack: -8px 12px 30px rgba(0, 0, 0, 0.12);
}

/* --------------------------------------------------------------------------
   2. Global Resets & Base Styles
   -------------------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-outer);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    padding: 24px 16px;
}

@media (max-width: 768px) {
    body {
        padding: 0;
    }
}

a {
    color: inherit;
    text-decoration: none;
    transition: all 0.2s ease;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
}

/* --------------------------------------------------------------------------
   3. Main Page Frame & Outer Canvas (Reference Design Match)
   -------------------------------------------------------------------------- */
.page-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--bg-canvas);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

@media (max-width: 768px) {
    .page-wrapper {
        border-radius: 0;
        border: none;
        box-shadow: none;
    }
}

/* --------------------------------------------------------------------------
   4. Header & Navigation Bar
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    padding: 16px 40px;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1120px;
    margin: 0 auto;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.3rem;
}

.logo-sub {
    color: var(--accent-blue);
    font-weight: 600;
    font-size: 0.95rem;
}

.main-nav .nav-list {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 4px 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
    font-weight: 700;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
    display: none;
    background: none;
    padding: 8px;
}

.hamburger, .hamburger::before, .hamburger::after {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
    position: relative;
}

.hamburger::before {
    content: '';
    position: absolute;
    top: -7px;
}

.hamburger::after {
    content: '';
    position: absolute;
    top: 7px;
}

.mobile-toggle.active .hamburger {
    background-color: transparent;
}

.mobile-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

/* --------------------------------------------------------------------------
   5. Buttons & Badges
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 24px;
    border-radius: 30px;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #FFFFFF;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--bg-card-subtle);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #E2E8F0;
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    background: transparent;
}

.btn-outline:hover {
    border-color: var(--text-primary);
    background-color: var(--bg-card-subtle);
}

.btn-block {
    width: 100%;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background-color: #F0FDF4;
    border: 1px solid #DCFCE7;
    color: #166534;
    border-radius: 20px;
    font-size: 0.825rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

/* --------------------------------------------------------------------------
   6. Hero Section & Rotated Stacked Cards
   -------------------------------------------------------------------------- */
.hero-section {
    padding: 60px 40px 40px 40px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 40px;
    align-items: center;
}

.hero-title {
    font-size: clamp(2.4rem, 4.5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.hero-bio {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.65;
}

.hero-bio.lead-paragraph {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--text-primary);
}

.hero-bio strong {
    color: var(--text-primary);
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

/* --- ROTATED STACKED CARDS COMPONENT (REFERENCE LAYOUT MATCH) --- */
.hero-graphic-col {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 20px;
}

.card-stack-wrapper {
    position: relative;
    width: 320px;
    height: 420px;
    perspective: 1000px;
}

.stack-card {
    position: absolute;
    width: 100%;
    border-radius: var(--radius-lg);
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-stack);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: bottom center;
}

/* Card 1: Top Main Code Card */
.card-top {
    z-index: 3;
    top: 0;
    left: 0;
    padding: 24px;
    transform: rotate(0deg) translateY(0);
}

/* Card 2: Middle Tilted Card */
.card-mid {
    z-index: 2;
    top: 15px;
    left: 10px;
    transform: rotate(-6deg);
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: #FFFFFF;
    padding: 24px;
}

/* Card 3: Back Tilted Card */
.card-back {
    z-index: 1;
    top: 30px;
    left: 5px;
    transform: rotate(7deg);
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
    border-color: #BFDBFE;
    color: #1E3A8A;
    padding: 24px;
}

/* Stack Hover Fan-out Effect */
.card-stack-wrapper:hover .card-top {
    transform: rotate(-2deg) translateY(-8px);
}

.card-stack-wrapper:hover .card-mid {
    transform: rotate(-12deg) translateX(-18px) translateY(10px);
}

.card-stack-wrapper:hover .card-back {
    transform: rotate(14deg) translateX(18px) translateY(12px);
}

/* Inner Top Card Elements */
.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.card-user-info {
    display: flex;
    flex-direction: column;
}

.card-name {
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.card-role {
    font-size: 0.8rem;
    color: var(--accent-blue);
    font-weight: 600;
}

.code-snippet-window {
    background-color: var(--bg-dark-card);
    border-radius: var(--radius-md);
    padding: 14px;
    color: #E2E8F0;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    margin-bottom: 18px;
}

.code-window-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid #334155;
}

.code-window-bar .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot.red { background-color: #EF4444; }
.dot.yellow { background-color: #F59E0B; }
.dot.green { background-color: #10B981; }

.code-title {
    margin-left: 6px;
    font-size: 0.72rem;
    color: #94A3B8;
}

.code-block .kw { color: #F472B6; }
.code-block .str { color: #34D399; }
.code-block .var { color: #60A5FA; }

.card-footer-metrics {
    display: flex;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
}

.metric-pill {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.metric-value {
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.metric-label {
    font-size: 0.7rem;
    color: var(--text-tertiary);
}

/* Card Mid & Back Illustrations */
.card-illustration-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.illus-icon {
    font-size: 2rem;
}

.illus-title {
    font-weight: 700;
    font-size: 1.1rem;
}

.illus-desc {
    font-size: 0.85rem;
    opacity: 0.85;
}

.illus-tags {
    display: flex;
    gap: 6px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.illus-tags span {
    font-size: 0.72rem;
    padding: 4px 10px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.15);
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   7. Hero Meta Grid (Reference Bottom 3-Column Metadata Row)
   -------------------------------------------------------------------------- */
.hero-meta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.meta-heading {
    font-size: 0.9rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.meta-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.meta-title {
    display: block;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.meta-sub {
    display: block;
    font-size: 0.825rem;
    color: var(--text-tertiary);
}

.meta-list-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 12px;
    background-color: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
}

.links-list li a {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px stroke var(--border-color);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.links-list li a:hover {
    color: var(--accent-blue);
}

.external-arrow {
    font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   8. Section Container & Common Headers
   -------------------------------------------------------------------------- */
.section-container {
    padding: 80px 40px;
    border-top: 1px solid var(--border-color);
}

.section-header {
    max-width: 680px;
    margin-bottom: 48px;
}

.section-subtitle {
    display: inline-block;
    font-size: 0.825rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-blue);
    margin-bottom: 8px;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   9. Services Grid
   -------------------------------------------------------------------------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.service-card {
    background-color: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    background-color: #FFFFFF;
    border-color: #CBD5E1;
}

.service-icon-box {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.service-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-features li {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   10. Portfolio Projects & Filtering
   -------------------------------------------------------------------------- */
.project-filters {
    display: flex;
    gap: 12px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 30px;
    background-color: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--text-primary);
    color: #FFFFFF;
    border-color: var(--text-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.project-card {
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: #94A3B8;
}

.project-preview-box {
    width: 100%;
    height: 190px;
    background-color: #F8FAFC;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
}

.vector-illus-box {
    width: 100%;
    height: 100%;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Project Vector Mockup Styles */
.theme-bot {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: #FFFFFF;
}

.bot-illus-graphic {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.bot-bubble {
    padding: 8px 14px;
    border-radius: 12px;
    font-size: 0.8rem;
    max-width: 85%;
}

.bot-bubble.user {
    background-color: rgba(255,255,255,0.15);
    align-self: flex-end;
}

.bot-bubble.ai {
    background-color: var(--accent-blue);
    align-self: flex-start;
}

.badge-mini {
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    opacity: 0.9;
    margin-bottom: 2px;
}

.bot-status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.72rem;
    opacity: 0.8;
    margin-top: 4px;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-green);
    border-radius: 50%;
}

.theme-dashboard {
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
}

.dash-illus-graphic {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.dash-bar-row {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    height: 70px;
}

.dash-bar {
    width: 24px;
    background: #4F46E5;
    border-radius: 6px 6px 0 0;
}

.dash-label-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.78rem;
    color: #312E81;
}

.theme-workflow {
    background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
}

.workflow-illus-graphic {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
}

.wf-node {
    padding: 8px 12px;
    background: #FFFFFF;
    border-radius: 8px;
    border: 1px solid #6EE7B7;
    color: #065F46;
}

.wf-node.highlight {
    background: #10B981;
    color: #FFFFFF;
}

.theme-web {
    background: linear-gradient(135deg, #FAF5FF 0%, #F3E8FF 100%);
}

.web-illus-graphic {
    width: 90%;
    background: #FFFFFF;
    border-radius: 8px;
    border: 1px solid #E9D5FF;
    padding: 10px;
}

.web-nav-sim {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid #F3E8FF;
}

.web-dot-group span {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #D8B4FE;
}

.web-url-sim {
    font-size: 0.68rem;
    color: #7E22CE;
}

.web-body-sim {
    padding-top: 10px;
    font-size: 0.78rem;
    font-weight: 700;
    color: #6B21A8;
}

.project-details {
    padding: 24px;
}

.project-tags {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}

.project-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.55;
}

.project-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--border-light);
}

.project-metric {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.project-link {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
}

.project-link:hover {
    color: var(--accent-blue);
}

/* --------------------------------------------------------------------------
   11. Metrics Banner
   -------------------------------------------------------------------------- */
.metrics-banner {
    background-color: var(--accent-primary);
    color: #FFFFFF;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.metric-number {
    display: block;
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 4px;
}

.metric-text {
    font-size: 0.875rem;
    color: #94A3B8;
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   12. Contact Section & Form
   -------------------------------------------------------------------------- */
.contact-card-box {
    background-color: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 56px 40px;
}

.contact-header-center {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px auto;
}

.contact-title {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 800;
    margin-top: 8px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.contact-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
}

.contact-methods-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.contact-method-card {
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: all 0.25s ease;
    box-shadow: var(--shadow-sm);
}

.contact-method-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #94A3B8;
}

.method-icon-box {
    font-size: 1.75rem;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background-color: var(--bg-card-subtle);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.method-info {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.method-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 2px;
    letter-spacing: 0.04em;
}

.method-value {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    word-break: break-all;
}

.method-value.link:hover {
    color: var(--accent-blue);
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 20px;
    background: #F1F5F9;
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.copy-btn:hover {
    background: #E2E8F0;
    border-color: #94A3B8;
}

@media (max-width: 768px) {
    .contact-methods-grid {
        grid-template-columns: 1fr;
    }

    .contact-method-card {
        flex-wrap: wrap;
    }
}

/* --------------------------------------------------------------------------
   13. Footer
   -------------------------------------------------------------------------- */
.site-footer {
    padding: 32px 40px;
    border-top: 1px solid var(--border-color);
    background-color: #FFFFFF;
}

.footer-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1120px;
    margin: 0 auto;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-logo {
    font-weight: 800;
    font-size: 1rem;
    margin-right: 16px;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.footer-right {
    display: flex;
    gap: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.footer-right a:hover {
    color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   14. Mobile & Responsive Layout Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .hero-graphic-col {
        order: -1;
    }

    .hero-meta-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .services-grid, .projects-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .site-header {
        padding: 16px 20px;
    }

    .main-nav {
        position: fixed;
        top: 65px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        padding: 24px;
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow-lg);
    }

    .main-nav.active {
        transform: translateY(0);
    }

    .main-nav .nav-list {
        flex-direction: column;
        gap: 16px;
    }

    .mobile-toggle {
        display: block;
    }

    .hero-section, .section-container {
        padding: 40px 20px;
    }

    .contact-card-box {
        padding: 24px;
    }

    .card-stack-wrapper {
        width: 280px;
        height: 380px;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }
}