@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&family=VT323&display=swap');

:root {
    /* Palette - Neo-Brutalist / Retro Modern */
    --bg-color: #f0f0f0;
    /* Off-white / Light Gray */
    --card-bg: #ffffff;
    --text-main: #1a1a1a;
    --text-muted: #666666;

    /* Accents */
    --accent-blue: #0000EE;
    /* Standard Link Blue */
    --accent-purple: #8855ff;
    /* Modern Pop */
    --border-color: #000000;
    /* Sharp Black */
    --shadow-color: #333333;
    /* Dark Gray Shadow for depth */

    /* Additional Light Mode Colors */
    --accent-gray-dark: #666666;

    /* Spacing */
    --spacing-sm: 12px;
    --spacing-md: 24px;
    --spacing-lg: 48px;

    /* Fonts */
    --font-body: 'Inter', sans-serif;
    /* Clean, Modern */
    --font-header: 'VT323', monospace;
    /* Retro Accent */
    --font-mono: 'VT323', monospace;
    /* Code / Technical */
}

/* Dark Mode Variables */
body.dark-mode {
    /* Dark Theme Palette - Retro Terminal Aesthetic */
    --bg-color: #1a1a1a;
    /* Dark Charcoal */
    --card-bg: #2d2d2d;
    /* Slightly Lighter for Windows */
    --text-main: #e0e0e0;
    /* Light Gray Text */
    --text-muted: #a0a0a0;
    /* Muted Gray */

    /* Dark Mode Accents - Retro Terminal Colors */
    --accent-blue: #00d4ff;
    /* Cyan for Links */
    --accent-purple: #bb86fc;
    /* Purple Accent */
    --border-color: #00ff00;
    /* Retro Terminal Green */
    --shadow-color: #008800;
    /* Darker Green Shadow for depth */
    --accent-gray-dark: #a0a0a0;
    background-image: none;
    /* Remove noise texture in dark mode */
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-body);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    /* Subtle noise texture */
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
    /* CRT Scanline Effect */
    position: relative;
    min-height: 100vh;

}

/* CRT Overlay */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.05) 50%);
    /* Very subtle on light bg */
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 9999;
}

/* Dark Mode CRT Overlay */
body.dark-mode::after {
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%);
    /* Dark scanlines for consistent retro feel */
    background-size: 100% 4px;
}

/* Typography */
h1,
h2,
h3,
h4 {
    font-family: var(--font-header);
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

h1 {
    font-size: 3.5rem;
    line-height: 1;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.8rem;
}

a {
    color: var(--accent-blue);
    text-decoration: underline;
    text-decoration-thickness: 2px;
}

a:hover {
    background-color: var(--accent-blue);
    color: white;
    text-decoration: none;
}

/* Layout */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Neo-Brutalist Components */
.window {
    background: var(--card-bg);
    border: 3px solid var(--border-color);
    box-shadow: 6px 6px 0px var(--shadow-color);
    /* Hard shadow with separate color for depth */
    margin-bottom: var(--spacing-lg);
    transition: transform 0.2s ease;
}

.window:hover {
    box-shadow: 8px 8px 0px var(--shadow-color);
}

.window-header {
    background: var(--border-color);
    color: white;
    padding: 8px 16px;
    font-family: var(--font-header);
    font-size: 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.window-body {
    padding: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    background: white;
    border: 3px solid var(--border-color);
    color: var(--text-main);
    padding: 12px 24px;
    font-family: var(--font-header);
    font-size: 1.4rem;
    text-decoration: none;
    box-shadow: 4px 4px 0px var(--shadow-color);
    transition: all 0.1s;
    margin-right: 16px;
}

.btn:hover {
    background: var(--border-color);
    color: white;
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--text-main);
}

.btn:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px var(--text-main);
}

/* Marquee */
.marquee-container {
    background: rgba(0, 0, 0, 0.8);
    color: #00FF00;
    /* Matrix Green */
    font-family: var(--font-header);
    font-size: 1.5rem;
    padding: 12px 8px;
    overflow: hidden;
    white-space: nowrap;
}

.marquee-content {
    display: inline-block;
    animation: marquee 20s linear infinite;
}

@keyframes marquee {
    0% {
        transform: translateX(100%);
    }

    100% {
        transform: translateX(-100%);
    }
}

/* Navigation */
.nav-bar {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-bottom: 3px solid var(--border-color);
    padding-bottom: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: space-between;
    /* Space between logo/brand (if any) and nav */
    align-items: center;
}

.nav-toggle {
    display: none;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    align-items: center;
}

.nav-link {
    font-family: var(--font-header);
    font-size: 1.5rem;
    text-decoration: none;
    color: var(--text-main);
    padding: 4px 8px;
    border: 2px solid transparent;
}

.nav-link:hover {
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--text-main);
    box-shadow: 3px 3px 0px var(--shadow-color);
}

/* Theme Toggle Button */
.theme-toggle {
    margin-left: auto;
    background: var(--card-bg);
    border: 3px solid var(--border-color);
    color: var(--text-main);
    font-size: 1.5rem;
    padding: 4px 12px;
    cursor: pointer;
    box-shadow: 3px 3px 0px var(--shadow-color);
    transition: all 0.1s;
    font-family: var(--font-header);
}

.theme-toggle:hover {
    transform: translate(-2px, -2px);
    box-shadow: 5px 5px 0px var(--shadow-color);
}

.theme-toggle:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0px var(--shadow-color);
}

/* Timeline (About Page) */
.timeline-item {
    border-left: 3px solid var(--border-color);
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -10px;
    top: 0;
    width: 16px;
    height: 16px;
    background: white;
    border: 3px solid var(--border-color);
}

/* Inputs */
input,
textarea {
    width: 100%;
    padding: 12px;
    border: 3px solid var(--border-color);
    font-family: var(--font-body);
    font-size: 1rem;
    background: #fafafa;
    box-shadow: 3px 3px 0px rgba(0, 0, 0, 0.1);
}

input:focus,
textarea:focus {
    outline: none;
    box-shadow: 5px 5px 0px var(--accent-blue);
}

/* Utilities */
.text-center {
    text-align: center;
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: 1fr 1fr;
}

@media (max-width: 768px) {

    /* Layout */
    .container {
        padding: var(--spacing-sm);
        width: 100%;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    /* Typography */
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    h3 {
        font-size: 1.4rem;
    }

    /* Navigation */
    .nav-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        margin-bottom: var(--spacing-md);
        position: relative;
    }

    /* Container for menu button and theme toggle on mobile */
    .nav-bar>.nav-toggle,
    .nav-bar>.theme-toggle {
        display: inline-block;
    }

    /* Wrapper for mobile header buttons */
    .nav-bar::before {
        content: "";
        display: block;
        width: 100%;
    }

    .nav-toggle {
        display: inline-block;
        background: var(--card-bg);
        border: 2px solid var(--border-color);
        color: var(--text-main);
        font-family: var(--font-header);
        font-size: 1.2rem;
        padding: 8px 16px;
        cursor: pointer;
        text-align: center;
        width: auto;
        flex: 1;
        margin-bottom: var(--spacing-sm);
        box-shadow: none;
        line-height: 1;
        box-sizing: border-box;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-link {
        text-align: center;
        display: block;
        padding: 12px;
        border: 2px solid transparent;
        background: var(--card-bg);
        /* Ensure background covers content behind */
        width: 100%;
    }

    .nav-link:hover {
        background: var(--border-color);
        color: white;
    }

    /* Theme Toggle on mobile - next to menu button */
    .theme-toggle {
        margin-left: var(--spacing-sm);
        width: auto;
        padding: 8px 16px;
        margin-bottom: var(--spacing-sm);
        display: inline-block;
        position: absolute;
        right: 0;
        top: 0;
        font-size: 1.2rem;
        height: 39.2px;
        line-height: 1;
        box-sizing: border-box;
        border: 2px solid var(--border-color);
        box-shadow: none;
    }

    /* Components */
    .window {
        margin-bottom: var(--spacing-md);
    }

    .window-header {
        font-size: 1rem;
        padding: 6px 10px;
    }

    .window-body {
        padding: var(--spacing-md);
    }

    /* Buttons */
    .btn {
        display: block;
        width: 100%;
        margin-right: 0;
        margin-bottom: var(--spacing-sm);
        text-align: center;
    }

    /* Action Buttons Container (will add class to HTML) */
    .action-buttons {
        flex-direction: column;
        width: 100%;
    }

    /* Marquee */
    .marquee-container {
        font-size: 1.2rem;
        padding: 8px 4px;
    }
}

/* Dark Mode Specific Overrides for Inline Styles */
body.dark-mode [style*="background: white"],
body.dark-mode [style*="background:white"] {
    background: var(--card-bg) !important;
    color: var(--text-main) !important;
}

body.dark-mode [style*="background: var(--text-muted)"] {
    background: var(--accent-purple) !important;
}

body.dark-mode [style*="background: var(--text-main)"] {
    background: var(--border-color) !important;
    color: #000000 !important;
    /* Black text on neon green for maximum readability */
}

body.dark-mode [style*="color: var(--accent-blue)"] {
    color: var(--accent-blue) !important;
}

/* Dark Mode Button Fix */
body.dark-mode .btn {
    background: var(--card-bg);
    color: var(--text-main);
    border-color: var(--border-color);
    box-shadow: 4px 4px 0px var(--shadow-color);
}

body.dark-mode .btn:hover {
    background: var(--border-color);
    color: #000000;
    /* Black text on neon green for maximum readability */
    box-shadow: 6px 6px 0px var(--accent-blue);
}

body.dark-mode .btn:active {
    box-shadow: 2px 2px 0px var(--accent-blue);
}

/* Dark Mode Form Inputs */
body.dark-mode input,
body.dark-mode textarea {
    background: var(--card-bg);
    color: var(--text-main);
    border-color: var(--border-color);
}

body.dark-mode input:focus,
body.dark-mode textarea:focus {
    box-shadow: 5px 5px 0px var(--accent-blue);
}

/* Utility Classes for Content (Replacing Inline Styles) */
.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.shadow-hard {
    box-shadow: 4px 4px 0 var(--border-color);
}

.shadow-none {
    box-shadow: none;
}

.bg-text-main {
    background: var(--text-main);
    color: white;
}

.bg-text-muted {
    background: var(--text-muted);
    color: white;
}

.bg-accent-blue {
    background: var(--accent-blue);
    color: white;
}

.text-accent-blue {
    color: var(--accent-blue);
}

.text-muted {
    color: var(--text-muted);
}

.font-bold {
    font-weight: bold;
}

.font-header {
    font-family: var(--font-header);
}

.text-sm {
    font-size: 0.9rem;
}

.text-lg {
    font-size: 1.1rem;
}

.list-square {
    list-style-type: square;
    padding-left: 20px;
}

/* Dark Mode Footer */
body.dark-mode footer {
    color: var(--text-muted) !important;
}

/* Dark Mode Window Headers - Black text on neon green for all headers */
/* Dark Mode Window Headers - Black text on neon green for all headers */
body.dark-mode .window-header {
    color: #000000 !important;
    /* Black text on neon green background for maximum readability across all pages */
}

/* Container override to render above particle canvas */
.container {
    position: relative;
    z-index: 2;
}

/* Background Canvas */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
}

/* Win95 Retro Styling for Simulation Control Window */
.control-window {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 280px;
    z-index: 10000;
    margin-bottom: 0 !important;
    background: var(--card-bg);
    border: 3px solid var(--border-color);
    box-shadow: 6px 6px 0px var(--shadow-color);
    font-family: var(--font-body);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.control-window.collapsed {
    transform: translateY(calc(100% - 37px)); /* Leaves only the header bar visible */
}

.control-window .window-body {
    padding: 16px;
}

.control-window .control-group {
    margin-bottom: 12px;
}

.control-window .control-group:last-child {
    margin-bottom: 0;
}

.control-window .control-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    font-weight: bold;
    margin-bottom: 4px;
    font-family: var(--font-mono);
    text-transform: uppercase;
}

.control-window .control-value {
    color: var(--accent-blue);
    font-weight: bold;
}

body.dark-mode .control-window .control-value {
    color: var(--border-color) !important;
}

/* Custom Styled Win95 Slider Inputs */
.control-window input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: #808080;
    border-bottom: 1px solid #ffffff;
    border-right: 1px solid #ffffff;
    outline: none;
    cursor: pointer;
}

.control-window input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 18px;
    background: #c0c0c0;
    border: 2px outset #ffffff;
    cursor: pointer;
    box-shadow: 1px 1px 1px #000000;
}

.control-window input[type="range"]::-moz-range-thumb {
    width: 12px;
    height: 18px;
    background: #c0c0c0;
    border: 2px outset #ffffff;
    cursor: pointer;
    box-shadow: 1px 1px 1px #000000;
}

/* Theme selector radio pills in Win95 style */
.control-window .theme-selector {
    display: flex;
    gap: 6px;
    margin-top: 4px;
}

.control-window .theme-pill {
    flex: 1;
    text-align: center;
    padding: 4px 2px;
    background: #c0c0c0;
    border: 2px outset #ffffff;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    cursor: pointer;
    color: #000000;
    text-transform: uppercase;
}

.control-window .theme-pill:hover {
    background: #dcdcdc;
}

.control-window .theme-pill.active {
    border: 2px inset #ffffff;
    background: #dfdfdf;
    font-weight: bold;
}

/* Dark mode overrides for UI elements inside window controls */
body.dark-mode .control-window .theme-pill {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    color: var(--text-main);
}

body.dark-mode .control-window .theme-pill:hover {
    background: var(--border-color);
    color: #000000;
}

body.dark-mode .control-window .theme-pill.active {
    background: var(--border-color);
    color: #000000;
}

body.dark-mode .control-window input[type="range"] {
    background: var(--shadow-color);
    border: 1px solid var(--border-color);
}

body.dark-mode .control-window input[type="range"]::-webkit-slider-thumb {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
}

body.dark-mode .control-window input[type="range"]::-moz-range-thumb {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
}

/* Minimize button customization */
.control-window #minimizeBtn:hover {
    background: #808080 !important;
    color: white !important;
}

body.dark-mode .control-window #minimizeBtn {
    background: var(--card-bg) !important;
    border: 2px solid var(--border-color) !important;
    color: var(--border-color) !important;
}

body.dark-mode .control-window #minimizeBtn:hover {
    background: var(--border-color) !important;
    color: #000000 !important;
}