/* ============== ANIMATED BACKGROUND & SHARED STYLES (Same as before) ============== */
.background-animation { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; background: radial-gradient(ellipse at 70% 20%, var(--primary-color) 0%, transparent 40%), radial-gradient(ellipse at 30% 80%, var(--secondary-color) 0%, transparent 40%); filter: blur(100px); opacity: 0.3; animation: moveAurora 20s infinite alternate; }
@keyframes moveAurora { from { transform: translate(-20%, -20%) scale(1.2); } to { transform: translate(20%, 20%) scale(1.5); } }
.container { max-width: 900px; margin: 0 auto; padding: 0 1.5rem; position: relative; z-index: 2; }
header { display: flex; justify-content: space-between; align-items: center; padding: 2rem 1.5rem; }
.logo { font-size: 1.75rem; font-weight: 700; background: linear-gradient(90deg, var(--text-color), var(--primary-color)); -webkit-background-clip: text; color: transparent; text-decoration: none; }
.nav-link { color: var(--text-muted); text-decoration: none; transition: color 0.3s ease; }
.nav-link:hover { color: var(--text-color); }
.card { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 20px; padding: 2.5rem; backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px); margin-top: 2rem; }

/* ============== CONTRAST CHECKER SPECIFIC STYLES ============== */
.tool-header { text-align: center; margin-bottom: 2rem; border-bottom: 1px solid var(--border-color); padding-bottom: 1.5rem; }
.tool-header h1 { font-size: 2.5rem; }
.tool-header p { color: var(--text-muted); }

.checker-workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

.color-input-group { margin-bottom: 1.5rem; }
.color-input-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
.color-control { display: flex; align-items: center; gap: 0.75rem; }
.color-control input[type="color"] { width: 45px; height: 45px; border-radius: 8px; border: 1px solid var(--border-color); cursor: pointer; background: transparent; padding: 4px; }
.color-control input[type="text"] { font-family: 'Poppins', sans-serif; flex-grow: 1; background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-color); padding: 12px; font-size: 1rem; }

.preview-box {
    border-radius: 15px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}
.preview-text-large { font-size: 24px; font-weight: bold; margin-bottom: 0.5rem; }
.preview-text-normal { font-size: 16px; }

/* Results Panel Styling */
.results-panel { display: flex; flex-direction: column; }
.contrast-ratio-display { text-align: center; border-bottom: 1px solid var(--border-color); padding-bottom: 1.5rem; margin-bottom: 1.5rem; }
.contrast-ratio-display h3 { color: var(--text-muted); font-size: 1rem; text-transform: uppercase; letter-spacing: 1px; }
.contrast-ratio-display p { font-size: 3.5rem; font-weight: 700; line-height: 1.1; }

.result-category { margin-bottom: 1.5rem; }
.result-category h4 { margin-bottom: 0.5rem; }
.result-item { display: flex; align-items: center; background: var(--input-bg); border-radius: 8px; padding: 0.75rem; margin-bottom: 0.5rem; }
.status-icon { font-size: 1.5rem; margin-right: 0.75rem; }
.wcag-level { font-weight: 600; flex-grow: 1; }
.status-text { font-weight: 600; }

.result-item.pass { border-left: 4px solid var(--pass-color); }
.result-item.pass .status-icon { color: var(--pass-color); }
.result-item.pass .status-text { color: var(--pass-color); }
.result-item.fail { border-left: 4px solid var(--fail-color); }
.result-item.fail .status-icon { color: var(--fail-color); }
.result-item.fail .status-text { color: var(--fail-color); }

/* ============== SEO GUIDE & FOOTER ============== */
.content-guide h2 { font-size: 2rem; margin-bottom: 1rem; }
.content-guide h3 { font-size: 1.5rem; margin-top: 1.5rem; margin-bottom: 0.5rem; color: var(--primary-color); }
footer { text-align: center; padding: 4rem 1.5rem; color: var(--text-muted); }

/* ============== RESPONSIVE ============== */
@media (max-width: 768px) {
    .checker-workspace {
        grid-template-columns: 1fr;
    }
}