:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --error: #dc2626;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
    --bg: #0d1117;
    --card-bg: #161b22;
    --text: #c9d1d9;
    --text-light: #8b949e;
    --border: #30363d;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

/* Header */
header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-actions { display: flex; gap: 15px; align-items: center; }

/* Navigation */
nav {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 2rem;
    display: flex;
    gap: 10px;
    overflow-x: auto;
}

.nav-btn {
    padding: 10px 20px;
    border: none;
    background: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.2s;
    white-space: nowrap;
    text-decoration: none;
}

.nav-btn:hover { background-color: var(--bg); color: var(--primary); }
.nav-btn.active { background-color: var(--primary); color: white; }


/* ============================================
   CATEGORY NAVIGATION STYLES
   ============================================ */

.category-nav-container {
    background: linear-gradient(135deg, var(--primary) 0%, #4f46e5 100%);
    border-bottom: none;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: nowrap; /* ← Prevent wrapping */
    overflow-x: auto; /* ← Allow horizontal scroll if needed */
}

.category-label {
    font-weight: 600;
    color: white;
    white-space: nowrap; /* ← Prevent "Category:" from breaking */
    flex-shrink: 0; /* ← Prevent label from shrinking */
}

#categorySelector {
    flex-shrink: 0; /* ← Prevent dropdown from shrinking */
}

#categorySelect {
    padding: 10px 15px;
    border-radius: 6px;
    border: none;
    font-size: 0.95rem;
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--text);
    min-width: 280px; /* ← Fixed minimum width */
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    white-space: nowrap; /* ← Prevent option text from breaking */
}

#categorySelect:hover {
    background-color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

#categorySelect:focus {
    outline: none;
    background-color: white;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

/* Tool Navigation - Same Gradient Background */
#toolNavigation {
    background: linear-gradient(135deg, var(--primary) 0%, #4f46e5 100%);
    border-bottom: none;
    padding: 0.75rem 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    row-gap: 10px;
}

#toolNavigation .nav-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: white;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.2s;
    white-space: nowrap;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
}

#toolNavigation .nav-btn:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

/* Active/Selected Tool Button - White Background */
#toolNavigation .nav-btn.active {
    background-color: white;
    color: var(--primary);
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    font-weight: 600;
}

/* Responsive - Keep label+dropdown on same row, adjust padding only */
@media (max-width: 768px) {
    .category-nav-container {
        padding: 1rem;
        overflow-x: auto; /* Allow horizontal scroll on small screens */
    }
    
    #categorySelect {
        min-width: 250px; /* Slightly smaller on mobile */
    }
    
    #toolNavigation {
        padding: 0.75rem 1rem;
    }
}

/* Dark Mode Support */
[data-theme="dark"] .category-nav-container,
[data-theme="dark"] #toolNavigation {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

[data-theme="dark"] #toolNavigation .nav-btn.active {
    color: #6366f1;
}



/* Main Content */
main { padding: 2rem; max-width: 1800px; margin: 0 auto; }

/* Home Grid */
.utilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.utility-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border);
    text-decoration: none;
    color: inherit;
    display: block;
}

.utility-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.utility-icon { font-size: 3rem; margin-bottom: 1rem; }
.utility-card h3 { margin: 0 0 0.5rem 0; color: var(--text); }
.utility-card p { margin: 0; color: var(--text-light); font-size: 0.95rem; line-height: 1.5; }





/* Tool Container */
.tool-container {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.tool-header { margin-bottom: 2rem; text-align: center; }
.tool-header h2 { color: var(--primary); margin: 0 0 0.5rem 0; }

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.btn-primary { background-color: var(--primary); color: white; }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-secondary { background-color: var(--border); color: var(--text); }
.btn-secondary:hover { opacity: 0.8; }
.btn-success { background-color: var(--success); color: white; }

.btn-success { background-color: var(--success); color: white; }
.btn-success:hover { background-color: #059669; }

/* Donate Button */
.btn-donate {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.3);
}

.btn-donate:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 4px 8px rgba(16, 185, 129, 0.4);
    transform: translateY(-1px);
}

.btn-icon {
    padding: 8px 12px;
    font-size: 1.2rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    border-radius: 6px;
}


.btn-icon {
    padding: 8px 12px;
    font-size: 1.2rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    border-radius: 6px;
}
.btn-icon:hover { background-color: var(--border); }

/* Forms & Inputs */
input[type="text"], input[type="number"], input[type="file"], select, textarea, input[type="color"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    box-sizing: border-box;
    background-color: var(--card-bg);
    color: var(--text);
}

textarea {
    font-family: 'Courier New', Courier, monospace;
    min-height: 200px;
    resize: vertical;
}

input[type="color"] {
    -webkit-appearance: none;
    padding: 0;
    height: 40px;
    cursor: pointer;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 6px; }

label { display: block; margin-bottom: 0.5rem; font-weight: 600; font-size: 0.9rem; }

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 3rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background-color: rgba(99, 102, 241, 0.05);
}

.upload-icon { font-size: 3rem; color: var(--text-light); margin-bottom: 1rem; }
input[type="file"] { position: absolute; width: 100%; height: 100%; top: 0; left: 0; opacity: 0; cursor: pointer; }

/* Progress Bar */
.progress-container { display: none; margin-top: 20px; }
.progress-bar { width: 100%; height: 8px; background-color: var(--border); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background-color: var(--primary); width: 0%; transition: width 0.3s ease; }

/* Stats */
.stats-box {
    background-color: var(--bg);
    padding: 15px;
    border-radius: 6px;
    margin-top: 15px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 10px;
}

.stat-item { text-align: center; }
.stat-value { font-weight: bold; color: var(--primary); font-size: 1.2rem; }
.stat-label { font-size: 0.85rem; color: var(--text-light); }

/* Error/Success Messages */
.error-msg {
    display: none;
    background-color: rgba(220, 38, 38, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 15px;
    border-radius: 6px;
    margin-top: 15px;
}

.utility-result {
    display: none;
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 15px;
    border-radius: 6px;
    margin-top: 15px;
}
.utility-result.show { display: block; }

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
    margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
    .split-view { grid-template-columns: 1fr !important; }
    header, nav { padding: 1rem; }
    main { padding: 1rem; }
}

/* Common Layout Classes */
.split-view { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.control-group { margin-bottom: 1.5rem; }
.options-row { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 10px; }
.option-item { display: flex; align-items: center; gap: 8px; }
.option-item input[type="checkbox"] { width: auto; }
.resize-row { display: flex; gap: 10px; align-items: flex-end; }
.resize-input { flex: 1; }
.btn-group { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }

/* Panels */
.panel {
    background-color: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel.drag-over {
    border-color: var(--primary);
    background-color: rgba(99, 102, 241, 0.05);
}

.panel-header {
    padding: 10px 15px;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-content { flex: 1; padding: 15px; overflow: auto; min-height: 300px; }

/* Syntax Highlighting */
.json-key { color: #0066cc; font-weight: bold; }
.json-string { color: #008000; }
.json-number { color: #ff6600; }
.json-boolean { color: #990099; font-weight: bold; }
.json-null { color: #990099; font-weight: bold; }
.json-bracket { color: #333333; }

[data-theme="dark"] .json-key { color: #9cdcfe; }
[data-theme="dark"] .json-string { color: #ce9178; }
[data-theme="dark"] .json-number { color: #b5cea8; }
[data-theme="dark"] .json-boolean { color: #569cd6; }
[data-theme="dark"] .json-null { color: #569cd6; }
[data-theme="dark"] .json-bracket { color: #ffd700; }

/* File Size Display */
.file-size-display {
    display: flex;
    justify-content: space-between;
    background-color: var(--bg);
    padding: 12px 15px;
    border-radius: 6px;
    margin-top: 10px;
    font-size: 0.9rem;
}

.file-size-item { display: flex; flex-direction: column; align-items: center; }
.file-size-label { color: var(--text-light); font-size: 0.8rem; margin-bottom: 4px; }
.file-size-value { font-weight: bold; color: var(--primary); }
.file-size-value.output { color: var(--success); }

/* Image Info Box */
.image-info-box {
    background-color: var(--bg);
    padding: 15px;
    border-radius: 6px;
    margin-top: 15px;
}

.image-info-row { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 0.9rem; }
.image-info-row:last-child { margin-bottom: 0; }
.image-info-label { color: var(--text-light); }
.image-info-value { font-weight: 600; }

/* Diff Styles */
.diff-line {
    padding: 4px 10px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 13px;
    border-left: 3px solid transparent;
    display: flex;
}

.diff-line-num {
    color: var(--text-light);
    min-width: 40px;
    text-align: right;
    padding-right: 15px;
    user-select: none;
    opacity: 0.6;
}

.diff-added { background-color: rgba(16, 185, 129, 0.15); border-left-color: #10b981; }
.diff-removed { background-color: rgba(220, 38, 38, 0.15); border-left-color: #dc2626; }
.diff-empty { background-color: var(--bg); opacity: 0.5; }

[data-theme="dark"] .diff-added { background-color: rgba(16, 185, 129, 0.25); }
[data-theme="dark"] .diff-removed { background-color: rgba(220, 38, 38, 0.25); }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 10px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-light); font-weight: 600; }

/* Utility Output */
.utility-output {
    background-color: var(--bg);
    padding: 15px;
    border-radius: 6px;
    margin-top: 15px;
    font-family: 'Courier New', Courier, monospace;
    word-break: break-all;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: var(--text-light); }

/* ============================================
   DONATE PAGE STYLES
   ============================================ */

.donate-hero {
    text-align: center;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
    border-radius: 12px;
    margin-bottom: 2rem;
}

.donate-hero h1 {
    color: var(--primary);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.donate-hero p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.donation-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.donation-option {
    background-color: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.donation-option:hover, .donation-option.selected {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
    transform: translateY(-3px);
}

.donation-option.selected {
    background-color: rgba(99, 102, 241, 0.05);
}

.donation-amount {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.donation-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

.custom-amount {
    max-width: 400px;
    margin: 2rem auto;
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.payment-method {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.payment-method:hover, .payment-method.selected {
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}

.payment-method.selected {
    background-color: rgba(99, 102, 241, 0.05);
}

.payment-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.donate-form {
    max-width: 600px;
    margin: 2rem auto;
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.thank-you-message {
    text-align: center;
    padding: 3rem 2rem;
    background-color: rgba(16, 185, 129, 0.1);
    border-radius: 12px;
    margin: 2rem 0;
}

.thank-you-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}