/* --- Basic Setup & Typography --- */
@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;700&family=Orbitron:wght@500&display=swap');

:root {
    --lab-bg: #2c3e50;
    --bench-top: #8B4513;
    --bench-front: #A0522D;
    --shelf-color: #6B4226;
    --text-light: #ecf0f1;
    --text-dark: #2c3e50;
    --accent-color: #3498db;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
    --ui-bg: rgba(236, 240, 241, 0.1);
    --border-radius: 12px;
    --font-main: 'Roboto Mono', monospace;
    --font-display: 'Orbitron', sans-serif;
    --metal-color: #ffd700;
    --nonmetal-color: #98fb98;
    --noble-color: #dda0dd;
    --transition-color: #ffa500;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-main);
    background-color: var(--lab-bg);
    color: var(--text-light);
    font-size: 16px;
}

/* --- NEW GRID LAYOUT --- */
#game-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr 350px; /* Main area + Right sidebar */
    grid-template-rows: 60px 1fr auto; /* Top bar + Main + Tools bottom */
    gap: 0;
    background: linear-gradient(to bottom, #34495e, #2c3e50);
}

/* --- Screen Shake Animation --- */
.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}

/* --- Lab Environment Styling --- */
#lab-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-image:
            linear-gradient(var(--shelf-color) 2px, transparent 2px),
            linear-gradient(90deg, var(--shelf-color) 2px, transparent 2px),
            linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
    background-position: -2px -2px, -2px -2px, -1px -1px, -1px -1px;
    grid-column: 1 / -1;
    grid-row: 1 / -1;
}

#workbench {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 35%;
    background: linear-gradient(to top, var(--bench-front), var(--bench-top));
    border-top: 10px solid #5C2F0E;
    z-index: 1;
    grid-column: 1 / -1;
    grid-row: 1 / -1;
}

/* --- Top UI Bar --- */
#top-bar {
    grid-column: 1 / -1;
    grid-row: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background: rgba(0,0,0,0.3);
    border-bottom: 2px solid rgba(255,255,255,0.1);
    z-index: 10;
}

.stats-display {
    display: flex;
    gap: 20px;
    font-family: var(--font-display);
    font-size: 1.2rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--ui-bg);
    padding: 5px 15px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    position: relative;
}

#xp-stat {
    cursor: pointer;
}

.xp-progress-container {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.9);
    border-radius: var(--border-radius);
    padding: 10px;
    margin-top: 5px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 1000;
    min-width: 200px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

#xp-stat:hover .xp-progress-container {
    opacity: 1;
    visibility: visible;
}

.xp-progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
    margin: 5px 0;
}

.xp-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3498db, #2ecc71);
    border-radius: 4px;
    transition: width 0.3s ease;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.5);
}

.xp-progress-fill[style*="width: 100%"] {
    box-shadow: 0 0 10px rgba(46, 204, 113, 0.8);
    animation: levelUpGlow 1s ease-in-out infinite alternate;
}

@keyframes levelUpGlow {
    from { box-shadow: 0 0 10px rgba(46, 204, 113, 0.8); }
    to { box-shadow: 0 0 20px rgba(46, 204, 113, 1); }
}

.xp-info {
    font-size: 0.8rem;
    color: var(--text-light);
    text-align: center;
}

#menu-buttons button {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-family: var(--font-main);
    transition: background-color 0.3s, transform 0.2s;
    margin-left: 10px;
}

#menu-buttons button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

/* --- Main Game Area (Left Side) --- */
#main-area {
    grid-column: 1;
    grid-row: 2;
    position: relative;
    z-index: 2;
    overflow: auto;
}

/* --- Customer --- */
#customer-area {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

#customer-sprite {
    width: 120px;
    height: 160px;
    background: #d35400;
    border-radius: 60px 60px 0 0;
    border: 4px solid #c0392b;
    animation: idleBob 3s ease-in-out infinite;
}

@keyframes idleBob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

#speech-bubble {
    position: absolute;
    bottom: 170px;
    left: 40px;
    background: white;
    color: var(--text-dark);
    padding: 15px;
    border-radius: var(--border-radius);
    width: 220px;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.4s, transform 0.4s;
}

#speech-bubble.visible {
    opacity: 1;
    transform: scale(1);
}

#speech-bubble::after {
    content: '';
    position: absolute;
    bottom: -19px;
    left: 20px;
    border-width: 20px 20px 0 0;
    border-style: solid;
    border-color: white transparent transparent transparent;
}

.order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid #ddd;
}

#order-timer {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: bold;
    color: #27ae60;
    background: rgba(39, 174, 96, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid #27ae60;
}

#skip-order-btn {
    background: #f39c12;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-main), system-ui;
}

#skip-order-btn:hover {
    background: #e67e22;
    transform: translateY(-1px);
}

#skip-order-btn:active {
    transform: translateY(0);
}

/* Order popup notifications */
.order-expired-popup,
.order-skipped-popup,
.skip-confirmation-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    animation: popupSlideIn 0.3s ease-out;
}

.order-expired-popup .popup-content,
.order-skipped-popup .popup-content,
.skip-confirmation-popup .popup-content {
    background: rgba(44, 62, 80, 0.95);
    color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 2px solid;
    min-width: 300px;
}

.order-expired-popup .popup-content {
    border-color: #e74c3c;
}

.order-skipped-popup .popup-content {
    border-color: #f39c12;
}

.order-expired-popup h3,
.order-skipped-popup h3,
.skip-confirmation-popup h3 {
    margin-bottom: 15px;
    font-size: 24px;
    font-family: var(--font-display);
}

.order-expired-popup p,
.order-skipped-popup p,
.skip-confirmation-popup p {
    margin: 8px 0;
    font-size: 16px;
}

.popup-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 20px;
}

.popup-buttons button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-family: var(--font-main);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.popup-buttons .primary-btn {
    background: #f39c12;
    color: white;
}

.popup-buttons .primary-btn:hover {
    background: #e67e22;
    transform: translateY(-1px);
}

.popup-buttons .secondary-btn {
    background: #95a5a6;
    color: white;
}

.popup-buttons .secondary-btn:hover {
    background: #7f8c8d;
    transform: translateY(-1px);
}

@keyframes popupSlideIn {
    from {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

/* --- Workbench Area (Center) --- */
#workbench-zone {
    position: absolute;
    top: 50%;
    left: 60%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 320px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 3;
}

#reaction-canvas {
    position: absolute;
    top: 50%;
    left: 60%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 320px;
    pointer-events: none;
    z-index: 4;
}

#equation-display {
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-main);
    font-size: 28px;
    color: white;
    height: 80px;
    gap: 10px;
    flex-wrap: wrap;
}

/* --- Equipment Hint Messages --- */
.equipment-hint {
    background: linear-gradient(135deg, #3498db, #2980b9);
    border: 2px solid #5dade2;
    border-radius: 12px;
    padding: 15px 20px;
    margin: 10px 0;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    animation: hintPulse 2s ease-in-out infinite;
}

.equipment-hint.heat {
    background: linear-gradient(135deg, #e67e22, #d35400);
    border-color: #e67e22;
    box-shadow: 0 4px 15px rgba(230, 126, 34, 0.3);
}

.equipment-hint.mixing {
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-color: #3498db;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

@keyframes hintPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* --- Enhanced Tool Display --- */
#tool-display {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    margin: 10px 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

#tool-display .tool-icon {
    font-size: 24px;
    padding: 4px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

#tool-display .tool-icon:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* --- Reaction Arrow Styling --- */
.reaction-arrow {
    font-weight: bold;
    font-size: 1.2em;
    margin: 0 8px;
    text-shadow: 0 0 10px currentColor;
}

.reaction-arrow.heat {
    color: #ff6b35;
    animation: heatGlow 2s ease-in-out infinite;
}

.reaction-arrow.mixing {
    color: #3498db;
    animation: mixingGlow 2s ease-in-out infinite;
}

@keyframes heatGlow {
    0%, 100% { text-shadow: 0 0 10px #ff6b35; }
    50% { text-shadow: 0 0 20px #ff6b35, 0 0 30px #ff6b35; }
}

@keyframes mixingGlow {
    0%, 100% { text-shadow: 0 0 10px #3498db; }
    50% { text-shadow: 0 0 20px #3498db, 0 0 30px #3498db; }
}

#workbench-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    position: absolute;
    bottom: -50px;
}

.action-btn {
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: var(--border-radius);
    font-family: var(--font-display);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s;
}

#process-btn {
    background: var(--success-color);
    box-shadow: 0 4px #16a085;
}

#process-btn:hover:not(:disabled) {
    background-color: #27ae60;
}

#process-btn:active:not(:disabled) {
    transform: translateY(2px);
    box-shadow: 0 2px #16a085;
}

#process-btn:disabled {
    background-color: #7f8c8d;
    cursor: not-allowed;
    box-shadow: 0 4px #636e6e;
}

#clear-btn {
    background: var(--error-color);
    box-shadow: 0 4px #c0392b;
}

#clear-btn:hover:not(:disabled) {
    background-color: #d35400;
}

#clear-btn:active:not(:disabled) {
    transform: translateY(2px);
    box-shadow: 0 2px #c0392b;
}

#clear-btn:disabled {
    background-color: #7f8c8d;
    cursor: not-allowed;
    box-shadow: 0 4px #636e6e;
}

#hint-btn {
    background: #f39c12;
    box-shadow: 0 4px #e67e22;
}

#hint-btn:hover:not(:disabled) {
    background-color: #e67e22;
}

#hint-btn:active:not(:disabled) {
    transform: translateY(2px);
    box-shadow: 0 2px #e67e22;
}

#hint-btn:disabled {
    background-color: #7f8c8d;
    cursor: not-allowed;
    box-shadow: 0 4px #636e6e;
    position: relative;
}

#hint-btn:disabled::after {
    content: "💰 5";
    position: absolute;
    top: -20px;
    right: 0;
    background: #e74c3c;
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    white-space: nowrap;
    z-index: 10;
}

/* --- Right Sidebar (Elements) --- */
#elements-sidebar {
    grid-column: 2;
    grid-row: 2;
    background: rgba(0,0,0,0.4);
    border-left: 2px solid rgba(255,255,255,0.1);
    padding: 15px;
    overflow-y: auto;
    z-index: 5;
}

#elements-sidebar h3 {
    text-align: center;
    color: var(--accent-color);
    margin-bottom: 15px;
    font-family: var(--font-display);
    font-size: 1.1rem;
}

#search-container {
    margin-bottom: 15px;
}

#search-inventory {
    width: 100%;
    padding: 10px;
    border-radius: var(--border-radius);
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(0,0,0,0.2);
    color: white;
    font-family: var(--font-main);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

#search-inventory::placeholder {
    color: rgba(255,255,255,0.6);
}

#search-filters {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    background: rgba(255,255,255,0.1);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 4px 8px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.7rem;
    transition: all 0.3s;
}

.filter-btn.active, .filter-btn:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

#inventory-items-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
    gap: 8px;
    margin-bottom: 15px;
    min-height: 300px;
}

.inventory-item {
    width: 60px;
    height: 60px;
    background: var(--ui-bg);
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: grab;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.3s;
    user-select: none;
    text-align: center;
    padding: 4px;
    position: relative;
}

/* Element Type Colors */
.inventory-item[data-category="metal"] {
    border-color: var(--metal-color);
    background: linear-gradient(135deg, rgba(255,215,0,0.2), var(--ui-bg));
}

.inventory-item[data-category="nonmetal"] {
    border-color: var(--nonmetal-color);
    background: linear-gradient(135deg, rgba(152,251,152,0.2), var(--ui-bg));
}

.inventory-item[data-category="noble"] {
    border-color: var(--noble-color);
    background: linear-gradient(135deg, rgba(221,160,221,0.2), var(--ui-bg));
}

.inventory-item[data-category="transition"] {
    border-color: var(--transition-color);
    background: linear-gradient(135deg, rgba(255,165,0,0.2), var(--ui-bg));
}

.inventory-item[data-category="lanthanide"], .inventory-item[data-category="actinide"] {
    border-color: #ff69b4;
    background: linear-gradient(135deg, rgba(255,105,180,0.2), var(--ui-bg));
}

.inventory-item[data-category="metalloid"] {
    border-color: #00ced1;
    background: linear-gradient(135deg, rgba(0,206,209,0.2), var(--ui-bg));
}

.inventory-item.locked {
    opacity: 0.3;
    cursor: not-allowed;
}

.inventory-item.locked::after {
    content: '🔒';
    position: absolute;
    top: 2px;
    right: 4px;
    font-size: 0.8rem;
    z-index: 10;
}

.inventory-item:hover:not(.locked) {
    transform: scale(1.1);
    box-shadow: 0 0 12px var(--accent-color);
}

.inventory-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.inventory-item div {
    font-size: 1.2rem;
    pointer-events: none;
    font-weight: bold;
}

.inventory-item span {
    font-size: 0.5rem;
    margin-top: 2px;
    pointer-events: none;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    max-width: 50px;
}

#inventory-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

#inventory-pagination button {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 4px 8px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.8rem;
    transition: background-color 0.3s;
}

#inventory-pagination button:disabled {
    background: #7f8c8d;
    cursor: not-allowed;
}

#inventory-pagination button:hover:not(:disabled) {
    background: #2980b9;
}

#page-info {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.8);
}

/* --- Bottom Tools Bar --- */
#inventory-toolbar {
    grid-column: 1 / -1;
    grid-row: 3;
    background: rgba(0,0,0,0.4);
    border-top: 2px solid rgba(255,255,255,0.1);
    padding: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 5;
    overflow: hidden;
    padding-bottom: 16px;
}

#tools-section {
    width: 100%;
}

#tools-section h4 {
    color: var(--accent-color);
    margin-bottom: 18px;
    text-align: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 1px;
    font-weight: bold;
}

#tools-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    padding: 10px;
    min-height: 70px;
}

.tool-item {
    width: 70px;
    height: 70px;
    background: var(--ui-bg);
    border: 2px solid #f39c12;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: grab;
    transition: transform 0.2s, box-shadow 0.2s;
    user-select: none;
    text-align: center;
    padding: 4px;
}

.tool-item:hover {
    transform: scale(1.1);
    box-shadow: 0 0 12px #f39c12;
}

.tool-item div {
    font-size: 1.6rem;
    pointer-events: none;
}

.tool-item span {
    font-size: 0.6rem;
    margin-top: 2px;
    pointer-events: none;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    max-width: 55px;
}

/* --- Modals --- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

/* --- Starter Menu Styles --- */
.starter-menu-content {
    max-width: 700px;
    background: linear-gradient(135deg, #34495e, #2c3e50);
    color: var(--text-light);
    border: 2px solid var(--accent-color);
}

.starter-menu-content h2 {
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

.tutorial-section {
    margin-bottom: 30px;
}

.tutorial-section h3 {
    color: var(--success-color);
    margin-bottom: 20px;
    font-size: 1.4rem;
    text-align: center;
}

.tutorial-step {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    border-left: 4px solid var(--accent-color);
}

.tutorial-step h4 {
    color: var(--accent-color);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.tutorial-step p {
    margin-bottom: 8px;
    line-height: 1.5;
    font-size: 0.95rem;
}

.tutorial-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.primary-btn {
    background: var(--success-color);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 4px #16a085;
}

.primary-btn:hover {
    background: #27ae60;
    transform: translateY(-2px);
    box-shadow: 0 6px #16a085;
}

.secondary-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.3s;
    box-shadow: 0 4px #2980b9;
}

.secondary-btn:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 6px #2980b9;
}

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

.modal-content {
    background: var(--text-light);
    color: var(--text-dark);
    padding: 30px;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    text-align: center;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.modal-content h2 {
    font-family: var(--font-display);
    color: var(--accent-color);
    margin-bottom: 20px;
}

.modal-content p {
    line-height: 1.6;
    margin-bottom: 20px;
}

#codex-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-btn {
    background: rgba(52, 73, 94, 0.1);
    color: var(--text-dark);
    border: 1px solid rgba(52, 73, 94, 0.3);
    padding: 8px 16px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn.active, .tab-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.modal-content button {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
    margin: 5px;
}

.modal-content button.danger {
    background-color: var(--error-color);
}

.modal-content button:hover {
    background-color: #2980b9;
}



.modal-content button.danger:hover {
    background-color: #c0392b;
}

.modal-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* Hint modal styles */
.hint-content {
    text-align: left;
    background: rgba(52, 73, 94, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.hint-content h4 {
    color: var(--accent-color);
    margin-bottom: 10px;
}

.hint-ingredients {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 10px 0;
    flex-wrap: wrap;
}

.hint-ingredient {
    background: var(--accent-color);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.9rem;
}

/* --- Achievements Sidebar --- */
#achievements-sidebar {
    position: fixed;
    right: -350px;
    top: 0;
    width: 300px;
    height: 100%;
    background: rgba(44, 62, 80, 0.95);
    border-left: 2px solid var(--accent-color);
    padding: 20px;
    z-index: 90;
    transition: right 0.4s ease-in-out;
    overflow-y: auto;
}

#achievements-sidebar.visible {
    right: 0;
}

#achievements-sidebar h2 {
    text-align: center;
    font-family: var(--font-display);
    margin-bottom: 20px;
}

.achievement {
    background: var(--ui-bg);
    padding: 10px;
    border-radius: var(--border-radius);
    margin-bottom: 10px;
    opacity: 0.5;
}

.achievement.unlocked {
    opacity: 1;
    border-left: 5px solid var(--success-color);
}

.achievement h3 {
    font-size: 1rem;
    color: var(--success-color);
}

.achievement p {
    font-size: 0.8rem;
}

/* --- Responsive Design --- */
@media (max-width: 1200px) {
    #game-container {
        grid-template-columns: 1fr 300px;
    }
}

@media (max-width: 768px) {
    #game-container {
        grid-template-columns: 1fr;
        grid-template-rows: 60px 1fr 200px;
    }

    #elements-sidebar {
        display: none;
    }

    #inventory-toolbar {
        grid-row: 3;
        padding: 10px;
    }

    #tools-container {
        gap: 5px;
    }

    .tool-item {
        width: 45px;
        height: 45px;
    }

    #workbench-zone {
        width: 90%;
        max-width: 450px;
    }
}

.custom-tooltip {
  position: absolute;
  background: #222b3a;
  color: #fff;
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 1rem;
  font-family: var(--font-main);
  pointer-events: none;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  opacity: 0;
  transform: translateY(-8px) scale(0.98);
  transition: opacity 0.15s, transform 0.15s;
  z-index: 9999;
  white-space: nowrap;
}
.custom-tooltip.visible {
  opacity: 1;
  transform: translateY(-16px) scale(1);
}