/* Minimalist Editorial Grid - CSS Stylesheet */

:root {
    /* Color Palette */
    --bg-page: #faf9f6;          /* Warm Alabaster */
    --bg-card: #ffffff;          /* Off-White */
    --bg-widget: #f7f6f2;        /* Light Grey-Cream */
    --border-color: #e2e1dd;     /* Soft Grey Border */
    --border-hover: #1c1d1f;      /* Charcoal Hover Border */
    
    /* Brand Accents (Elegant & Soft) */
    --accent-teal: #0d9488;
    --accent-coral: #e11d48;
    --accent-orange: #ea580c;
    --accent-slate: #475569;
    
    --text-primary: #1c1d1f;     /* Slate-Black */
    --text-secondary: #5e5f62;   /* Slate-Grey */
    --text-muted: #8d8e92;       /* Light Muted Grey */
    
    /* Typography */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 3rem;
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Global Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-sans);
}

body {
    background-color: var(--bg-page);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* -------------------------------------------------------------------------
   Typography Helpers
   ------------------------------------------------------------------------- */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--text-primary);
}

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

/* -------------------------------------------------------------------------
   Header & Navigation
   ------------------------------------------------------------------------- */
.site-header {
    max-width: 1100px;
    margin: 0 auto;
    padding: 30px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.logo-link {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 24px;
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

/* -------------------------------------------------------------------------
   Hero/Banner Section
   ------------------------------------------------------------------------- */
.hero-section {
    max-width: 800px;
    margin: 80px auto 60px;
    padding: 0 24px;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.6;
}

/* -------------------------------------------------------------------------
   Projects Grid (jameskle.com inspired)
   ------------------------------------------------------------------------- */
.section-wrapper {
    max-width: 1100px;
    margin: 0 auto 100px;
    padding: 0 24px;
}

.section-head {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 40px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
}

.image-container {
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background-color: var(--bg-widget);
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.card-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 16px;
    transition: var(--transition-smooth);
}

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

.card-content {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.project-tag {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--accent-teal);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
}

.project-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-action-lbl {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.card-action-lbl::after {
    content: ' →';
    transition: var(--transition-smooth);
}

.project-card:hover .card-action-lbl::after {
    transform: translateX(4px);
}

/* -------------------------------------------------------------------------
   Experience (Timeline) & Skills Sections
   ------------------------------------------------------------------------- */
.skills-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.skills-cat {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.cat-title {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
}

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

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.skill-lbl {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.bar-progress {
    width: 100%;
    height: 4px;
    background-color: var(--bg-widget);
    border-radius: 2px;
    overflow: hidden;
}

.fill-progress {
    display: block;
    height: 100%;
    background-color: var(--text-primary);
    border-radius: 2px;
    width: 0;
    transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Timeline/Credentials */
.timeline-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
    position: relative;
    padding-left: 20px;
}

.timeline-list::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 6px;
    bottom: 6px;
    width: 1px;
    background-color: var(--border-color);
}

.timeline-node {
    position: relative;
}

.node-dot {
    position: absolute;
    left: -20px;
    top: 6px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background-color: var(--bg-page);
    border: 2px solid var(--text-primary);
}

.node-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 6px;
}

.node-date {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
}

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

.node-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.node-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-top: 6px;
}

/* -------------------------------------------------------------------------
   Overlay Modals (The Magic Dashboards)
   ------------------------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    width: 100%;
    max-width: 750px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    position: relative;
    transform: translateY(30px) scale(0.98);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-content {
    transform: translateY(0) scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--bg-widget);
    border: none;
    font-size: 1.25rem;
    font-weight: 300;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    z-index: 10;
}

.modal-close-btn:hover {
    background-color: var(--text-primary);
    color: var(--bg-card);
}

.modal-body {
    padding: 40px;
}

.modal-header-sec {
    margin-bottom: 24px;
    padding-right: 40px;
}

.modal-badge {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--accent-teal);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.modal-title {
    font-size: 1.8rem;
    line-height: 1.25;
}

.modal-details-para {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

/* -------------------------------------------------------------------------
   Widget Styling (Sales, Heatmap, Ledger, Curves)
   ------------------------------------------------------------------------- */
.scope-visualizer {
    background-color: var(--bg-widget);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 180px;
    margin-top: 16px;
}

.scope-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
}

.scope-ctrls {
    display: flex;
    gap: 6px;
}

.btn-ctrl {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-ctrl:hover, .btn-ctrl.active {
    border-color: var(--text-primary);
    color: var(--text-primary);
    background-color: var(--bg-widget);
}

.scope-chart {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}

.scope-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.scope-footer strong {
    color: var(--text-primary);
}

/* Sales Chart SVG styling */
#chart-ecommerce text {
    font-family: var(--font-mono);
    font-size: 7.5px;
    fill: var(--text-secondary);
}

/* Heatmap Grid */
.grid-heatmap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    width: 100%;
}

.heatmap-cell {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    height: 45px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: var(--transition-smooth);
    background-color: var(--bg-card);
}

.heatmap-cell:hover {
    border-color: var(--text-primary);
    transform: scale(1.03);
}

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

.cell-label {
    font-size: 0.55rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* Fraud Ledger Stream */
.ledger-stream-container {
    width: 100%;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    height: 110px;
    background-color: var(--bg-card);
}

.ledger-header {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background-color: var(--bg-widget);
    padding: 6px 10px;
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.ledger-body {
    height: 80px;
    padding: 4px 10px;
    overflow-y: auto;
}

.ledger-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 4px 0;
    border-bottom: 1px dashed var(--border-color);
}

.status-safe { color: var(--accent-teal); font-weight: bold; }
.status-flagged { color: var(--accent-coral); font-weight: bold; }

/* A/B Significance curves */
.calculator-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.calc-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.calc-row label {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

.calc-slider-val {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--text-primary);
}

.calc-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 3px;
    background: var(--border-color);
    outline: none;
    border-radius: 2px;
}

.calc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.calc-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.calc-result {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-align: center;
    font-weight: 700;
}

.calc-result.invalid {
    border-color: var(--accent-coral);
    color: var(--accent-coral);
    background-color: rgba(225, 29, 72, 0.02);
}

.calc-result.valid {
    border-color: var(--accent-teal);
    color: var(--accent-teal);
    background-color: rgba(13, 148, 136, 0.02);
}

/* -------------------------------------------------------------------------
   Footer (jameskle.com inspired)
   ------------------------------------------------------------------------- */
.site-footer {
    max-width: 1100px;
    margin: 60px auto 0;
    padding: 40px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.newsletter-form-wrapper {
    width: 100%;
    max-width: 480px;
    text-align: center;
}

.footer-subtitle {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.footer-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.newsletter-fields {
    display: flex;
    gap: 10px;
}

.input-field {
    flex-grow: 1;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    outline: none;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.input-field:focus {
    border-color: var(--text-primary);
}

.newsletter-btn {
    background-color: var(--text-primary);
    color: var(--bg-page);
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.newsletter-btn:hover {
    background-color: var(--text-secondary);
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-link {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.social-link:hover {
    color: var(--text-primary);
}

.footer-info {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
}

/* -------------------------------------------------------------------------
   Responsive Rules
   ------------------------------------------------------------------------- */
@media (max-width: 900px) {
    .projects-grid {
        grid-template-columns: 1fr;
        max-width: 580px;
        margin: 0 auto;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .skills-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .site-header {
        flex-direction: column;
        gap: 16px;
    }
    
    .newsletter-fields {
        flex-direction: column;
        gap: 8px;
    }
    
    .modal-body {
        padding: 24px;
    }
    
    .modal-title {
        font-size: 1.5rem;
    }
}