:root, [data-theme="dark"] {
    --bg-dark: #0c0813;
    --bg-card: rgba(12, 8, 19, 0.65);
    --text-main: #f7f4f2;
    --text-muted: rgba(247, 244, 242, 0.5);
    --primary-color: #c9a84c;
    --primary-hover: #d1b463;
    --accent-color: #c9a84c;
    --border-light: rgba(201, 168, 76, 0.45);
    --bg-grad-1: rgba(201, 168, 76, 0.15);
    --bg-grad-2: rgba(201, 168, 76, 0.05);
    --bg-grad-3: rgba(201, 168, 76, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --font-family: 'Inter', sans-serif;
}

[data-theme="light"] {
    --bg-dark: #f7f4f2;
    --bg-card: rgba(255, 255, 255, 0.55);
    --text-main: #0c0813;
    --text-muted: rgba(12, 8, 19, 0.5);
    --primary-color: #d8500a;
    --primary-hover: #e8631c;
    --accent-color: #d8500a;
    --border-light: rgba(255, 255, 255, 0.85);
    --bg-grad-1: rgba(216, 80, 10, 0.15);
    --bg-grad-2: rgba(216, 80, 10, 0.05);
    --bg-grad-3: rgba(216, 80, 10, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(216, 80, 10, 0.15);
}

[data-theme="mist"] {
    --bg-dark: #3f454c;
    --bg-card: rgba(63, 69, 76, 0.55);
    --text-main: #e8ebed;
    --text-muted: rgba(232, 235, 237, 0.5);
    --primary-color: #8fb1c6;
    --primary-hover: #9fc1d6;
    --accent-color: #8fb1c6;
    --border-light: rgba(232, 235, 237, 0.42);
    --bg-grad-1: rgba(143, 177, 198, 0.15);
    --bg-grad-2: rgba(143, 177, 198, 0.05);
    --bg-grad-3: rgba(143, 177, 198, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-family);
    min-height: 100vh;
    background-image: 
        radial-gradient(at 0% 0%, var(--bg-grad-1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, var(--bg-grad-2) 0, transparent 50%), 
        radial-gradient(at 100% 0%, var(--bg-grad-3) 0, transparent 50%);
    background-attachment: fixed;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.header-top {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1rem;
}

.theme-toggle-btn {
    background: rgba(128, 128, 128, 0.1);
    border: 1px solid var(--border-light);
    color: var(--text-main);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font-family);
    transition: all 0.2s ease;
    backdrop-filter: blur(8px);
}

.theme-toggle-btn:hover {
    background: var(--primary-color);
    color: var(--bg-dark);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--bg-grad-1);
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-family: 'Georgia', serif;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid var(--border-light);
    border-radius: 22px;
    box-shadow: var(--glass-shadow);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}

.controls-card {
    padding: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: space-between;
    align-items: center;
}

.scale-buttons {
    display: flex;
    gap: 0.5rem;
}

.scale-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-light);
    color: var(--text-main);
    padding: 0.5rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
}

.scale-btn:hover, .scale-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.custom-scale {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.input-group label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.input-group input {
    background: var(--bg-dark);
    border: 1px solid var(--border-light);
    color: var(--text-main);
    padding: 0.6rem;
    border-radius: 8px;
    width: 80px;
    text-align: center;
    font-family: var(--font-family);
    transition: border-color 0.2s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.primary-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
    height: 41px;
}

.primary-btn:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.recipe-workarea {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.input-area {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-area label {
    font-weight: 600;
    font-size: 1.1rem;
}

textarea {
    width: 100%;
    height: 400px;
    background: var(--bg-dark);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1.2rem;
    color: var(--text-main);
    font-family: var(--font-family);
    font-size: 1rem;
    resize: vertical;
    transition: border-color 0.2s;
    line-height: 1.6;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.output-area {
    padding: 1.5rem;
    height: 100%;
}

.output-area h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0.5rem;
    color: var(--text-main);
}

.scaled-results {
    white-space: pre-wrap;
    font-size: 1.05rem;
    line-height: 1.6;
}

.scaled-results .highlight {
    color: var(--bg-dark);
    font-weight: 700;
    background: var(--primary-color);
    padding: 0 4px;
    border-radius: 4px;
}

.placeholder-text {
    color: var(--text-muted);
    font-style: italic;
}

/* Tips Section */
.tips-section {
    margin-top: 2rem;
    padding: 1.5rem;
}

.tips-section h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0.5rem;
    color: var(--text-main);
}

.tips-list {
    list-style-type: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tips-list li {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-muted);
    padding-left: 1rem;
    border-left: 3px solid var(--primary-color);
}

.tips-list li strong {
    color: var(--text-main);
}

/* Sidebar */
.sidebar {
    padding: 1.5rem;
    height: fit-content;
}

.sidebar h2 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0.5rem;
}

.gear-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.gear-item {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    padding: 1rem;
    border: 1px solid transparent;
    border-radius: 12px;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.gear-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--bg-grad-1);
    border-color: var(--border-light);
    background: rgba(128, 128, 128, 0.05);
}

.gear-img-wrapper {
    height: 160px;
    width: 100%;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.gear-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gear-img-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.4), transparent);
}

.gear-info h3 {
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 0.2rem;
}

.gear-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.4;
}

@media (max-width: 960px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    .recipe-workarea {
        grid-template-columns: 1fr;
    }
    .controls-card {
        flex-direction: column;
        align-items: stretch;
    }
    .scale-buttons {
        justify-content: center;
    }
    .custom-scale {
        justify-content: center;
    }
}

.affiliate-btn {
    margin-top: 0.5rem;
    background: var(--primary-color);
    color: var(--bg-dark);
    border: none;
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-weight: 700;
    font-family: var(--font-family);
    cursor: pointer;
    text-align: center;
    transition: background 0.2s ease, transform 0.2s ease;
    width: 100%;
}

.affiliate-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.02);
}

/* Unit Toggle */
.unit-toggle-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.unit-label {
    font-size: 0.9rem;
    font-weight: 600;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(128, 128, 128, 0.2);
    transition: .4s;
    border: 1px solid var(--border-light);
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: var(--primary-color);
    transition: .4s;
}

input:checked + .slider {
    background-color: rgba(128, 128, 128, 0.4);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-light);
    padding-top: 1.5rem;
}

.action-btn {
    flex: 1;
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font-family);
    transition: all 0.2s ease;
}

.action-btn:hover {
    background: var(--primary-color);
    color: var(--bg-dark);
}

/* Checkboxes */
.recipe-line {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    cursor: pointer;
    margin-bottom: 0.5rem;
    padding: 0.2rem 0;
}

.recipe-line input[type="checkbox"] {
    margin-top: 0.35rem;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.recipe-line .recipe-text {
    flex: 1;
    transition: opacity 0.2s, text-decoration 0.2s;
}

.recipe-line input[type="checkbox"]:checked + .recipe-text {
    text-decoration: line-through;
    opacity: 0.5;
}

/* Print Styles */
@media print {
    body {
        background: #fff !important;
        color: #000 !important;
        background-image: none !important;
    }
    
    .theme-toggle-btn,
    .controls-card,
    .input-area,
    .sidebar,
    .tips-section,
    .action-buttons,
    header p {
        display: none !important;
    }
    
    .app-container {
        padding: 0 !important;
        margin: 0 !important;
        max-width: none !important;
    }
    
    .content-grid, .recipe-workarea {
        display: block !important;
    }
    
    .output-area {
        border: none !important;
        box-shadow: none !important;
        background: transparent !important;
        padding: 0 !important;
    }
    
    .output-area h2 {
        color: #000 !important;
        border-bottom: 2px solid #000 !important;
    }
    
    .scaled-results .highlight {
        background: transparent !important;
        color: #000 !important;
        font-weight: bold !important;
        border: 1px solid #000;
    }
}