/* ==========================================================================
   Kelcy Green Portfolio - Stylesheet
   Draftsman's Workbench "Light Grey, Silver & Linen" Theme
   Optimized for Direct FTP/cPanel Upload on GoDaddy
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIABLES & DESIGN SYSTEM
   -------------------------------------------------------------------------- */
:root {
    /* Color Palette - User's Custom Drafting Specifications */
    --bg-primary: #DCDFE2;        /* Light Grey drafting board base */
    --bg-secondary: #353C42;      /* Dark Grey structural framing & tabs */
    --bg-secondary-light: #BCC3C8; /* Silver / Light Steel middleground */
    --bg-tertiary: #FAF5E6;       /* Warm Linen foreground cards & drawing sheets */
    
    /* Accents & Inks (Red, Blue, Black) */
    --accent-red: #C93B2B;        /* Drafting ink Red (Active links, hovers & alerts) */
    --accent-red-hover: #A82E21;
    --accent-red-light: rgba(201, 59, 43, 0.08);
    
    --accent-blue: #295C8F;       /* Drafting ink Blue (Specifications, skill types, coordinates) */
    --accent-blue-hover: #1E4473;
    --accent-blue-light: rgba(41, 92, 143, 0.08);
    
    --accent-wood: #7A4B31;       /* Polished timber edge accents */
    --accent-wood-hover: #5F3923;
    --accent-wood-light: rgba(122, 75, 49, 0.08);
    
    --accent-steel: #535B61;      /* Dark steel / Graphite */
    
    /* Typography Colors (Red/Blue/Black variations) */
    --text-main: #121416;         /* Solid drafting Black ink (headers and main body) */
    --text-muted: #484E54;        /* Slate / pencil lead grey (descriptions) */
    --text-white: #FFFFFF;        /* Pure white for button-text contrast on dark tabs */
    --text-dark: #121416;
    
    /* Spacing, Borders & Shadows */
    --container-max-width: 1200px;
    --border-radius-sm: 4px;      /* Sharp geometric drafting board edges */
    --border-radius-md: 6px;
    --border-color: rgba(18, 20, 22, 0.1); /* Thin pencil sketch lines */
    --border-color-active: rgba(201, 59, 43, 0.35); /* Red ink active outline */
    --card-shadow: 0 8px 30px rgba(18, 20, 22, 0.04); /* Soft paper shadows */
    --card-shadow-hover: 0 16px 40px rgba(18, 20, 22, 0.08);
    
    /* Typography Font Stacks */
    --font-primary: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Roboto Mono', monospace;
    
    /* Animation Transitions */
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   2. GLOBAL RESETS & GENERAL STYLES
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Offset for sticky navbar */
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    /* High-fidelity engineering graph paper grid background lines (soft white ink on light grey) */
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.15) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.15) 1px, transparent 1px),
        linear-gradient(to right, rgba(255, 255, 255, 0.3) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.3) 1px, transparent 1px);
    background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px;
    color: var(--text-main);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a:hover {
    color: var(--accent-blue-hover);
}

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

h1, h2, h3, h4 {
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-main);
    letter-spacing: -0.01em;
}

/* Containers & Utilities */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: left;
    max-width: 800px;
    margin-bottom: 56px;
    border-left: 3px solid var(--accent-red); /* Polished red draft line header accent */
    padding-left: 20px;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--accent-blue); /* Section tags in blue */
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 17px;
    color: var(--text-muted);
    margin-top: 12px;
}

.divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 24px 0;
}

.hidden {
    display: none !important;
}

/* --------------------------------------------------------------------------
   3. NAVIGATION BAR (HEADER)
   -------------------------------------------------------------------------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(220, 223, 226, 0.9); /* Translucent light-grey matching body */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    padding: 16px 0;
}

.navbar.scrolled {
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(18, 20, 22, 0.03);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 42px; /* Clean height for navbar branding */
    width: auto;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-family: var(--font-primary);
    font-size: 18px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 0.05em;
    line-height: 1;
}

.logo-sub {
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 600;
    color: var(--accent-blue); /* Logo details in blue */
    letter-spacing: 0.05em;
    margin-top: 2px;
}

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

.nav-link {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-red); /* Active Nav links in Red */
}

/* --------------------------------------------------------------------------
   4. BUTTONS
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
    gap: 8px;
}

.btn-primary {
    background-color: var(--accent-red); /* Red primary buttons */
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(201, 59, 43, 0.15);
}

.btn-primary:hover {
    background-color: var(--accent-red-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 59, 43, 0.25);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--accent-steel);
}

.btn-secondary:hover {
    background-color: rgba(83, 91, 97, 0.08);
    transform: translateY(-2px);
}

.btn-nav {
    background-color: rgba(83, 91, 97, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-nav:hover {
    background-color: var(--accent-red-light);
    border-color: var(--accent-red);
    color: var(--accent-red);
    transform: translateY(-1px);
}

.btn-small {
    padding: 8px 16px;
    font-size: 12px;
}

.btn-accent {
    background-color: var(--bg-secondary-light); /* Silver / light-steel accents */
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.btn-accent:hover {
    background-color: var(--accent-blue-light);
    border-color: var(--accent-blue);
    color: var(--text-main);
}

.btn-block {
    width: 100%;
}

/* --------------------------------------------------------------------------
   5. HERO SECTION
   -------------------------------------------------------------------------- */
.hero {
    padding: 180px 0 100px 0;
    /* Soft crimson and slate blue drafting glows */
    background: radial-gradient(circle at 10% 20%, rgba(201, 59, 43, 0.05) 0%, rgba(41, 92, 143, 0.04) 40%, rgba(220, 223, 226, 0) 70%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 64px;
    align-items: center;
}

.badge {
    display: inline-block;
    font-family: var(--font-mono);
    background-color: var(--accent-blue-light); /* Badge in blue */
    color: var(--accent-blue);
    border: 1px solid rgba(41, 92, 143, 0.18);
    padding: 6px 14px;
    border-radius: var(--border-radius-sm);
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 24px;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.lead {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* Schematic Overlays */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.schematic-container {
    position: relative;
    background-color: var(--bg-tertiary); /* Linen visual card background */
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--card-shadow);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
}

.blueprint-graphic {
    width: 100%;
    max-width: 280px;
    height: auto;
    margin: 0 auto;
    display: block;
    mix-blend-mode: multiply; /* Blends white background into the warm Linen card background perfectly! */
    opacity: 0.85; /* Soft graphite/ink opacity */
    transition: var(--transition-smooth);
}

.blueprint-graphic:hover {
    opacity: 1;
    transform: scale(1.02);
}

.schematic-overlay {
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.console-text {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1;
}

.console-text:last-child {
    color: var(--accent-red); /* High-status terminal indicators in red */
}

/* --------------------------------------------------------------------------
   6. EXPERIENCE SECTION (INTERACTIVE TIMELINE)
   -------------------------------------------------------------------------- */
.experience {
    padding: 100px 0;
    background-color: var(--bg-secondary); /* Dark Grey middleground */
    color: var(--bg-tertiary); /* Soft white text inside dark grey section */
}

.experience h2, .experience h3, .experience .section-subtitle, .experience .tab-title {
    color: var(--bg-tertiary) !important; /* Ensure readable text on dark grey */
}

.experience-modular {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 48px;
    align-items: start;
}

.timeline-tabs {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tab-btn {
    background-color: #23272C; /* Deeper dark grey base */
    border: 1px solid rgba(250, 245, 230, 0.1);
    border-left: 3px solid var(--accent-steel); /* Left-border graphite notches */
    border-radius: var(--border-radius-sm);
    padding: 20px;
    text-align: left;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tab-btn:hover {
    background-color: #2F353C;
    border-left-color: var(--accent-red);
}

.tab-btn.active {
    background-color: #2F353C;
    border-color: rgba(250, 245, 230, 0.2);
    border-left: 3px solid var(--accent-red); /* Active tabs notch in red */
    box-shadow: var(--card-shadow);
}

.tab-year {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    color: var(--accent-red); /* Red year tags */
}

.tab-company {
    font-size: 13px;
    color: var(--bg-secondary-light); /* Silver subtext */
}

/* Timeline Content Display Panes */
.timeline-content-wrapper {
    background-color: #2F353C; /* Silver-dark grey panel */
    border: 1px solid rgba(250, 245, 230, 0.15);
    padding: 48px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--card-shadow);
    min-height: 400px;
}

.timeline-pane {
    display: none;
    animation: fadeIn 0.4s ease-out forwards;
}

.timeline-pane.active {
    display: block;
}

.pane-meta {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--bg-secondary-light);
    display: block;
}

.timeline-pane p {
    color: var(--bg-secondary-light);
    font-size: 16px;
    margin-bottom: 24px;
}

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

.achievements-list li {
    font-size: 15px;
    color: var(--bg-tertiary); /* Linen text */
    padding-left: 24px;
    position: relative;
    line-height: 1.6;
}

.achievements-list li::before {
    content: "::";
    font-family: var(--font-mono);
    position: absolute;
    left: 0;
    color: var(--accent-red); /* Red index dots */
    font-weight: 800;
}

/* --------------------------------------------------------------------------
   7. INTERACTIVE SKILLS MATRIX
   -------------------------------------------------------------------------- */
.skills {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.skills-filter-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.filter-btn {
    background-color: var(--bg-secondary-light); /* Silver buttons */
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 700;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--accent-blue-light); /* Selected filter indicator in blue */
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.skill-card {
    background-color: var(--bg-tertiary); /* Linen cards */
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-card.fade-out {
    opacity: 0.15;
    filter: grayscale(80%);
}

.skill-name {
    font-size: 17px;
    font-weight: 800;
    color: var(--text-main); /* Black */
}

.skill-type {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    color: var(--accent-blue); /* Skills types in Blue */
    letter-spacing: 0.05em;
}

.skill-bar {
    height: 4px;
    background-color: rgba(18, 20, 22, 0.06);
    border-radius: 2px;
    overflow: hidden;
}

.skill-bar .fill {
    height: 100%;
    background-color: var(--accent-steel);
    border-radius: 2px;
    transition: width 1s ease-out;
}

.skill-card:hover .skill-bar .fill {
    background-color: var(--accent-blue); /* Bar fill turns blue on hover */
}

/* --------------------------------------------------------------------------
   8. WORKSHOP (PROJECTS)
   -------------------------------------------------------------------------- */
.maker-lab {
    padding: 100px 0;
    background-color: var(--bg-secondary-light); /* Silver middleground block */
}

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

.maker-card {
    background-color: var(--bg-tertiary); /* Linen cards */
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.maker-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--accent-red); /* Card border turns red on hover */
}

.maker-icon-wrapper {
    color: var(--accent-red); /* Icons in red */
    background-color: var(--accent-red-light);
    width: 52px;
    height: 52px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.maker-card h3 {
    font-size: 22px;
    color: var(--text-main); /* Black */
}

.maker-card p {
    color: var(--text-muted);
    font-size: 15px;
}

/* --------------------------------------------------------------------------
   9. CERTIFICATIONS BANNER
   -------------------------------------------------------------------------- */
.certs-banner {
    padding: 80px 0;
    background-color: var(--bg-primary); /* Light Grey */
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.certs-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 48px;
}

.certs-text {
    max-width: 400px;
}

.certs-text h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.certs-text p {
    color: var(--text-muted);
    font-size: 15px;
}

.certs-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: flex-end;
    max-width: 600px;
}

.cert-badge {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--accent-blue); /* Cert badges in blue */
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 10px 18px;
    border-radius: var(--border-radius-sm);
}

/* --------------------------------------------------------------------------
   10. CONTACT & CONNECTION SECTION
   -------------------------------------------------------------------------- */
.contact {
    padding: 100px 0;
    background-color: var(--bg-primary); /* Light Grey */
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 64px;
    align-items: start;
}

.info-card {
    background-color: var(--bg-tertiary); /* Linen Card */
    padding: 40px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

.info-card h3 {
    font-size: 24px;
    margin-bottom: 32px;
}

.info-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

.info-list li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.info-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-blue-light);
    color: var(--accent-blue);
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-sm);
    flex-shrink: 0;
}

.info-list li div {
    display: flex;
    flex-direction: column;
}

.info-list li strong {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-list li a, .info-list li span {
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main); /* Black */
    margin-top: 4px;
}

.info-list li a:hover {
    color: var(--accent-red); /* Active link hover turns red */
}

/* Contact Form Card */
.form-card {
    background-color: var(--bg-tertiary); /* Linen card */
    border: 1px solid var(--border-color);
    padding: 48px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--card-shadow);
}

.form-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.form-help {
    color: var(--text-muted);
    font-size: 15px;
    margin-bottom: 32px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}

.required {
    color: var(--accent-red); /* Red asterisks */
}

.form-group input,
.form-group select {
    font-family: var(--font-primary);
    font-size: 15px;
    padding: 14px 18px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary); /* Light grey inputs */
    color: var(--text-main);
    transition: var(--transition-smooth);
    height: 52px;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

/* Custom styled select box */
.form-group {
    position: relative;
}

.form-group select {
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23484E54' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 18px center;
    background-size: 16px;
    padding-right: 48px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-red); /* Active border turns red */
    box-shadow: 0 0 0 3px rgba(201, 59, 43, 0.15);
    background-color: var(--bg-tertiary); /* Switch back to clean Linen on active typing */
}

.form-feedback {
    margin-top: 24px;
    padding: 16px;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
}

.form-feedback.success {
    background-color: rgba(41, 92, 143, 0.08);
    color: var(--accent-blue);
    border: 1px solid var(--border-color);
}

.form-feedback.error {
    background-color: rgba(201, 59, 43, 0.08);
    color: var(--accent-red);
    border: 1px solid rgba(201, 59, 43, 0.25);
}

/* Privacy Protection Banner styling */
.privacy-notice {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--accent-blue-light);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
}

.privacy-icon {
    color: var(--accent-red); /* Icon in red */
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   11. SITE FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
    background-color: var(--bg-secondary-light); /* Silver footer */
    color: var(--text-main);
    padding: 64px 0;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.footer-logo {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.footer-brand .logo-name {
    color: var(--text-main);
    font-size: 22px;
    letter-spacing: 0.05em;
    margin: 0;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

.footer-copyright {
    text-align: right;
    max-width: 500px;
}

.footer-copyright p {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-copyright .disclaimer {
    font-size: 11px;
    line-height: 1.5;
    margin-top: 12px;
    color: rgba(18, 20, 22, 0.4);
}

/* --------------------------------------------------------------------------
   12. PRIVACY & SECURITY MODAL WINDOW
   -------------------------------------------------------------------------- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.modal:not(.hidden) {
    display: flex;
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal_left{
	width: 40%;
}

.modal_right{
	padding-left: 5%;
	width: 100%;
}

.modal_row{
	width: 100%;	
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(18, 20, 22, 0.35); /* Translucent soft slate grey overlay */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    background-color: var(--bg-tertiary); /* Linen card pop-up */
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 500px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 20px 50px rgba(18, 20, 22, 0.1);
    z-index: 2010;
    transform: scale(0.95);
    transition: var(--transition-smooth);
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-red-light);
    color: var(--accent-red);
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-sm);
    flex-shrink: 0;
}

.modal-header h3 {
    font-size: 20px;
    font-family: var(--font-primary);
}

.modal-body {
    padding: 32px;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.6;
}

.modal-body p:not(:last-child) {
    margin-bottom: 16px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    padding: 24px 32px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-primary); /* Light grey footer */
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
}

/* --------------------------------------------------------------------------
   13. RESPONSIVE DESIGN (MEDIA QUERIES)
   -------------------------------------------------------------------------- */
@media (max-width: 991px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-visual {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .experience-modular {
        grid-template-columns: 1fr;
    }
    
    .timeline-tabs {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 8px;
    }
    
    .tab-btn {
        flex-shrink: 0;
        border-left: 1px solid var(--border-color);
        border-bottom: 3px solid var(--accent-steel);
        border-radius: var(--border-radius-sm);
    }
    
    .tab-btn.active {
        border-left: 1px solid var(--border-color);
        border-bottom: 3px solid var(--accent-red);
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .maker-grid {
        grid-template-columns: 1fr;
    }
    
    .certs-container {
        flex-direction: column;
        text-align: center;
    }
    
    .certs-list {
        justify-content: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .footer-copyright {
        text-align: center;
    }
    
    /* Navigation Menu Drawer on Mobile */
    .menu-toggle {
        display: block;
        background: transparent;
        border: none;
        width: 30px;
        height: 24px;
        position: relative;
        cursor: pointer;
        z-index: 1100;
    }
    
    .hamburger, .hamburger::before, .hamburger::after {
        content: '';
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--text-main);
        position: absolute;
        transition: var(--transition-smooth);
        border-radius: 2px;
    }
    
    .hamburger {
        top: 11px;
        right: 3px;
    }
    
    .hamburger::before {
        top: -8px;
    }
    
    .hamburger::after {
        top: 8px;
    }
    
    .menu-toggle[aria-expanded="true"] .hamburger {
        background-color: transparent;
    }
    
    .menu-toggle[aria-expanded="true"] .hamburger::before {
        transform: rotate(45deg);
        top: 0;
    }
    
    .menu-toggle[aria-expanded="true"] .hamburger::after {
        transform: rotate(-45deg);
        top: 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--bg-tertiary); /* Linen slide-out drawer on mobile */
        border-left: 1px solid var(--border-color);
        box-shadow: -10px 0 30px rgba(18, 20, 22, 0.08);
        padding: 100px 40px 40px 40px;
        transition: var(--transition-smooth);
        z-index: 1050;
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 28px;
    }
}

@media (min-width: 992px) {
    .menu-toggle {
        display: none;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 36px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .form-card {
        padding: 24px;
    }
    
    .info-card {
        padding: 24px;
    }

    .modal-footer {
        flex-direction: column-reverse;
        gap: 12px;
    }
    .modal-footer .btn {
        width: 100%;
    }
}

/* --------------------------------------------------------------------------
   14. BRANDED ERROR PAGE (404)
   -------------------------------------------------------------------------- */
.error-page-body {
    background-color: var(--bg-primary);
    /* Retain grid background lines for error templates too! */
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.15) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.15) 1px, transparent 1px),
        linear-gradient(to right, rgba(255, 255, 255, 0.3) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.3) 1px, transparent 1px);
    background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.error-section {
    padding: 64px 24px;
    text-align: center;
    max-width: 550px;
    width: 100%;
    margin: auto;
}

.error-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
    margin: 0 auto 40px auto;
}

.error-visual-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 48px 32px;
    border-radius: var(--border-radius-lg-asym);
    box-shadow: var(--card-shadow);
}

.error-icon {
    color: var(--accent-red);
    margin: 0 auto 24px auto;
}

.error-visual-card h1 {
    font-size: 32px;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.error-visual-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 32px;
}

.error-btn-group {
    display: flex;
    justify-content: center;
    gap: 16px;
}

@media (max-width: 576px) {
    .error-visual-card {
        padding: 32px 20px;
    }
    .error-btn-group {
        flex-direction: column;
        gap: 12px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}