:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --radius: 10px;
}
/* Dark Theme Overrides */
body.dark-theme {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

/* Adjusting ad-banner for Dark Mode */
body.dark-theme .ad-banner {
    background: #1e293b;
    border-color: #475569;
}


* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
}

header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.ad-banner {
    background: #f1f5f9;
    border: 1px dashed #cbd5e1;
    text-align: center;
    padding: 15px;
    margin-bottom: 2rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.tab-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

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

.tool-card {
    display: none;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
}

.tool-card.active {
    display: block;
}

.tool-card h2 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.4rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

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

input[type="file"], input[type="date"], input[type="text"], input[type="number"], select, textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    outline: none;
}

textarea {
    height: 120px;
    resize: vertical;
}

.btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

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

.btn-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.result-box {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #eff6ff;
    border-left: 4px solid var(--primary-color);
    border-radius: 4px;
    display: none;
}

.seo-content {
    margin-top: 3rem;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.seo-content h2 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--text-color);
}

.seo-content p {
    margin-bottom: 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

footer {
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 600px) {
    .tabs { flex-direction: column; }
    .tab-btn { width: 100%; text-align: center; }
}
/* Toast Notification System */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--card-bg);
    color: var(--text-color);
    padding: 12px 20px;
    border-radius: var(--radius);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    border-left: 4px solid var(--primary-color);
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.error {
    border-left-color: #ef4444; /* Red for errors */
}

.toast.success {
    border-left-color: #22c55e; /* Green for success */
}