@import url('https://fonts.googleapis.com/css2?family=IM+Fell+English+SC&family=IM+Fell+English:ital@0;1&family=Cinzel:wght@400;700&display=swap');
        
:root {
    /* Light mode colors */
    --primary: #2b2417;
    --secondary: #8b0000;
    --accent: #d4af37;
    --light: #f8f3e4;
    --dark: #1e1a10;
    --table-header: #efefef;
    --parchment: #f5eacc;
    --navy: #283359;
    --french-blue: #1a3564;
    --british-red: #b20023;
    --table-even: rgba(212, 196, 154, 0.2);
    --border-color: #d4c49a;
    
    /* Background pattern for light mode */
    --bg-pattern: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><rect width="100%" height="100%" fill="%23f8f3e4"/><path d="M0,0 L100,100 M100,0 L0,100" stroke="%23d9cead" stroke-width="0.5"/></svg>');
}

/* Dark mode colors */
[data-theme="dark"] {
    --primary: #a89e86;
    --secondary: #ff5555;
    --accent: #ffd700;
    --light: #151515;
    --dark: #e5e1d8;
    --table-header: #dfdfdf;
    --parchment: #222222;
    --navy: #243352;
    --french-blue: #284b8c;
    --british-red: #ff3b54;
    --table-even: rgba(80, 80, 80, 0.3);
    --border-color: #444444;
    
    /* Background pattern for dark mode */
    --bg-pattern: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><rect width="100%" height="100%" fill="%23151515"/><path d="M0,0 L100,100 M100,0 L0,100" stroke="%23333333" stroke-width="0.5"/></svg>');
}

body {
    font-family: 'IM Fell English', serif;
    background-color: var(--light);
    color: var(--dark);
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-image: var(--bg-pattern);
    transition: background-color 0.3s, color 0.3s;
}

header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 4px double var(--primary);
    padding-bottom: 20px;
    position: relative;
}

header:before, header:after {
    content: "✠";
    font-size: 24px;
    color: var(--secondary);
    position: absolute;
    bottom: -14px;
    background: var(--light);
    padding: 0 10px;
    transition: background-color 0.3s, color 0.3s;
}

header:before {
    left: 20%;
}

header:after {
    right: 20%;
}

h1 {
    font-family: 'IM Fell English SC', serif;
    color: var(--primary);
    font-size: 2.5rem;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
    letter-spacing: 2px;
    margin-bottom: 10px;
    transition: color 0.3s;
}

h2 {
    font-family: 'Cinzel', serif;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 10px;
    color: var(--primary);
    transition: color 0.3s, border-color 0.3s;
}

h3 {
    font-family: 'Cinzel', serif;
    color: var(--secondary);
    transition: color 0.3s;
}

.container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.card {
    background-color: var(--parchment);
    border-radius: 5px;
    box-shadow: 3px 3px 8px rgba(0, 0, 0, 0.3);
    padding: 25px;
    border: 1px solid var(--border-color);
    position: relative;
    transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.card:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 1px solid rgba(0,0,0,0.05);
    pointer-events: none;
    border-radius: 5px;
}

.game-mode {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.mode-btn {
    flex: 1;
    min-width: 120px;
    margin: 5px;
    padding: 12px 15px;
    font-family: 'Cinzel', serif;
    background-color: var(--light);
    border: 2px solid var(--primary);
    border-radius: 0;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--primary);
    position: relative;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.mode-btn:hover {
    background-color: var(--primary);
    color: var(--light);
}

.mode-btn.active {
    background-color: var(--navy);
    color: var(--light);
    border-color: var(--navy);
}

.mode-btn.active:before, .mode-btn.active:after {
    content: "«";
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent);
    font-size: 1.2rem;
}

.mode-btn.active:before {
    left: 5px;
}

.mode-btn.active:after {
    right: 5px;
    content: "»";
}

.resources {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.resource {
    text-align: center;
    flex: 1;
    padding: 15px 10px;
    background-color: var(--light);
    border: 1px solid var(--border-color);
    margin: 0 5px;
    position: relative;
    transition: background-color 0.3s, border-color 0.3s;
}

.resource h3 {
    margin: 0 0 10px 0;
    font-size: 1.1rem;
}

.resource-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary);
    transition: color 0.3s;
}

.units-table-container {
    width: 100%;
    overflow-x: auto;
}

.units-table {
    width: 100%;
    border-collapse: collapse;
    border: 2px solid var(--primary);
    transition: border-color 0.3s;
}

.units-table th, .units-table td {
    padding: 12px;
    text-align: left;
    border: 1px solid var(--border-color);
    transition: border-color 0.3s;
}

.units-table th {
    background-color: var(--navy);
    color: var(--table-header);
    font-family: 'Cinzel', serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    transition: background-color 0.3s, color 0.3s;
}

.units-table tr:nth-child(even) {
    background-color: var(--table-even);
    transition: background-color 0.3s;
}

.unit-controls {
    display: flex;
    align-items: center;
}

.unit-btn {
    width: 30px;
    height: 30px;
    font-size: 1.2rem;
    background-color: var(--primary);
    color: var(--light);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-family: 'IM Fell English', serif;
}

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

.unit-count {
    width: 50px;
    text-align: center;
    margin: 0 10px;
    font-weight: bold;
    font-size: 1.1rem;
}

.unit-toggle {
    margin-left: 10px;
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--secondary);
}

.buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 25px;
}

.btn {
    padding: 12px 24px;
    background-color: var(--primary);
    color: var(--light);
    border: none;
    font-family: 'Cinzel', serif;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
}

.btn:after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    right: 3px;
    bottom: 3px;
    border: 1px solid rgba(255,255,255,0.3);
    pointer-events: none;
}

.btn-optimize {
    background-color: var(--secondary);
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.result {
    margin-top: 30px;
    display: none;
}

.result.show {
    display: block;
}

.loader {
    text-align: center;
    margin: 20px 0;
    display: none;
}

.spinner {
    border: 5px solid var(--border-color);
    border-radius: 50%;
    border-top: 5px solid var(--secondary);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
    transition: border-color 0.3s;
}

/* Decorative elements */
.decoration {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.decoration span {
    color: var(--secondary);
    font-size: 18px;
    margin: 0 15px;
    transition: color 0.3s;
}

.decoration hr {
    flex-grow: 1;
    height: 1px;
    background-color: var(--primary);
    opacity: 0.3;
    border: none;
    margin-top: 10px;
    transition: background-color 0.3s;
}

/* Napoleonic emblems and decorations */
.emblem {
    font-size: 1.5rem;
    color: var(--accent);
    vertical-align: middle;
    margin: 0 5px;
    transition: color 0.3s;
}

#guide-btn {
    position: absolute;
    top: 30px;
    right: 30px;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

/* Dark mode toggle */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-bottom: 15px;
}

.theme-switch {
    display: inline-block;
    height: 34px;
    position: relative;
    width: 60px;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    background-color: white;
    bottom: 4px;
    content: "";
    height: 26px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 26px;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--navy);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.theme-switch-wrapper span {
    margin-right: 10px;
    font-family: 'Cinzel', serif;
    color: var(--dark);
    transition: color 0.3s;
}

.mode-icon {
    margin-left: 10px;
    font-size: 20px;
}

.optimization-result {
    overflow-x: auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media (min-width: 768px) {
    .container {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .setup {
        flex: 1;
        min-width: 300px;
    }
    
    .result {
        flex: 1;
        min-width: 300px;
    }
    
    .result-nav-button {
        margin: 30px;
    }
}
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.808);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

.showing {
    display: block;
    opacity: 1;
    transform: translateY(0);
    transition: slideUp 0.6s ease-out;
}

.hiding {
    opacity: 0.7;
    transform: translateY(100%);
    transition: all 0.6s ease-out;
}

.modal-content {
    position: relative;
    background-color: var(--parchment);
    margin: 5% auto;
    padding: 30px;
    border: 2px solid var(--border-color);
    width: 80%;
    max-width: 800px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    color: var(--dark);
    max-height: 90vh;
    overflow-y: scroll;
    animation: slideUp 0.6s ease-out;
    border-radius: 5px;
}

.modal-content:before {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    right: 3px;
    bottom: 3px;
    border: 1px solid rgba(0,0,0,0.05);
    pointer-events: none;
    border-radius: 3px;
}

.close {
    position: absolute;
    right: 20px;
    top: 15px;
    color: var(--primary);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close:hover {
    color: var(--secondary);
    transform: scale(1.1);
}

.guide-content {
    padding: 10px;
}

.guide-content h2 {
    text-align: center;
    font-family: 'IM Fell English SC', serif;
    margin-bottom: 30px;
    font-size: 1.8rem;
    padding-bottom: 15px;
    border-bottom-width: 3px;
}

.guide-section {
    margin-bottom: 30px;
    position: relative;
    padding: 10px 15px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    transition: background-color 0.3s;
}

.guide-section:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.guide-section h4 {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 15px;
    color: var(--secondary);
    font-family: 'Cinzel', serif;
    letter-spacing: 1px;
    font-size: 1.1rem;
    transition: color 0.3s;
}

.guide-section ul {
    list-style-type: none;
    padding-left: 15px;
}

.guide-section ul li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 25px;
    line-height: 1.5;
}

.guide-section ul li:before {
    content: "✠";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 0.9em;
    transition: color 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0.7;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0.7;
        transform: translateY(100%);
    }
}

/* Adjust modal scrollbar for better appearance */
.modal-content::-webkit-scrollbar {
    width: 10px;
}

.modal-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

.modal-content::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 10px;
    border: 3px solid var(--parchment);
}

/* Make guide modal more responsive on smaller screens */
@media (max-width: 768px) {
    .modal-content {
        width: 90%;
        padding: 20px;
        margin: 10% auto;
    }
    
    .guide-section {
        padding: 8px;
    }
}