/* P5 (YouTag.AI) CSS */
:root {
    --bg-color: #f8f9fa;
    --text-color: #333333;
    --text-muted: #666666;
    --card-bg: #ffffff;
    --border-color: #e0e0e0;
    --primary-color: #ef4444; /* YouTube Red */
    --primary-hover: #dc2626;
    --badge-bg: #fef2f2;
    --input-bg: #ffffff;
}

body.dark-mode {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --text-muted: #a0a0a0;
    --card-bg: #1e1e1e;
    --border-color: #333333;
    --primary-color: #ef4444;
    --primary-hover: #f87171;
    --badge-bg: #450a0a;
    --input-bg: #2d2d2d;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }
body { background-color: var(--bg-color); color: var(--text-color); line-height: 1.6; transition: background-color 0.3s, color 0.3s; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.text-center { text-align: center; }

.navbar { background-color: var(--card-bg); border-bottom: 1px solid var(--border-color); padding: 15px 0; position: sticky; top: 0; z-index: 100; }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.nav-brand { font-size: 1.5rem; font-weight: 700; color: var(--text-color); display: flex; align-items: center; gap: 8px; }
.nav-links { list-style: none; display: flex; gap: 25px; align-items: center; }
.nav-links a { text-decoration: none; color: var(--text-muted); font-weight: 500; }
.nav-links a:hover { color: var(--primary-color); }
.theme-toggle { background: none; border: none; font-size: 1.5rem; cursor: pointer; }

.ad-placeholder { background: rgba(128, 128, 128, 0.1); border: 1px dashed var(--border-color); display: flex; justify-content: center; align-items: center; color: var(--text-muted); font-size: 0.9rem; margin: 20px auto; border-radius: 8px; }
.top-ad { width: 728px; height: 90px; max-width: 100%; }
.in-article-ad { width: 100%; height: 100px; margin-bottom: 25px; }

.hero { padding: 40px 0 30px; }
.hero h1 { font-size: 2.5rem; color: var(--text-color); margin-bottom: 15px; }
.hero p { font-size: 1.1rem; color: var(--text-muted); max-width: 700px; margin: 0 auto; }

.workspace { margin-bottom: 60px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }

.card { background: var(--card-bg); border-radius: 12px; border: 1px solid var(--border-color); box-shadow: 0 4px 12px rgba(0,0,0,0.04); overflow: hidden; }
.card-header { padding: 20px 25px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.card-header h2 { font-size: 1.1rem; font-weight: 600; color: var(--text-color); }
.card-body { padding: 25px; position: relative; min-height: 400px; }

.form-group { margin-bottom: 25px; }
label { display: block; margin-bottom: 8px; font-weight: 600; color: var(--text-color); font-size: 0.95rem; }
input, textarea, select { width: 100%; padding: 15px; background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-color); font-family: inherit; font-size: 1rem; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 1px var(--primary-color); }
.primary-btn { width: 100%; background: var(--primary-color); color: #fff; border: none; padding: 16px; font-size: 1.1rem; font-weight: 600; border-radius: 8px; cursor: pointer; transition: background 0.2s; }
.primary-btn:hover { background: var(--primary-hover); }

/* Tags */
.tag-badge { background: var(--badge-bg); color: var(--primary-color); padding: 8px 12px; border-radius: 6px; font-size: 0.9rem; font-weight: 500; display: inline-block; border: 1px solid rgba(239, 68, 68, 0.2); }
.dark-mode .tag-badge { border-color: rgba(239, 68, 68, 0.4); }

/* Blurring & Paywall */
.relative { position: relative; }
.blurred-text-container { position: relative; margin-top: 20px; }
.blurred-content { filter: blur(5px); user-select: none; transition: filter 0.3s; }
.paywall-overlay { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background: var(--card-bg); padding: 30px; border-radius: 12px; border: 1px solid var(--border-color); text-align: center; width: 90%; box-shadow: 0 10px 30px rgba(0,0,0,0.1); z-index: 10; }
.paywall-overlay h3 { color: var(--text-color); margin-bottom: 10px; font-size: 1.2rem; }
.paywall-overlay p { color: var(--text-muted); margin-bottom: 20px; font-size: 0.9rem; }
.paywall-btn { background: #3b82f6; color: white; border: none; padding: 12px 20px; border-radius: 6px; font-weight: 600; cursor: pointer; width: 100%; font-size: 1rem; transition: background 0.3s; }
.paywall-btn:hover { background: #2563eb; }

/* Loading */
.loading-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: var(--card-bg); display: flex; flex-direction: column; justify-content: center; align-items: center; z-index: 20; }
.spinner { width: 40px; height: 40px; border: 4px solid var(--border-color); border-top: 4px solid var(--primary-color); border-radius: 50%; animation: spin 1s linear infinite; margin-bottom: 15px; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.empty-state { text-align: center; color: var(--text-muted); padding: 40px 20px; font-style: italic; }

.seo-content { margin-bottom: 60px; }
.seo-card { background: var(--card-bg); border-radius: 12px; padding: 40px; border: 1px solid var(--border-color); }
.seo-card h2 { font-size: 1.8rem; color: var(--text-color); margin-bottom: 20px; }
.seo-card h3 { font-size: 1.3rem; color: var(--text-color); margin: 25px 0 15px; }
.seo-card p { color: var(--text-muted); margin-bottom: 15px; line-height: 1.8; }

.legal-container { max-width: 900px; margin: 60px auto; padding: 40px; background: var(--card-bg); border-radius: 12px; border: 1px solid var(--border-color); }
.legal-container h1 { font-size: 2.2rem; color: var(--primary-color); margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; }
.legal-container h2 { font-size: 1.4rem; color: var(--text-color); margin-top: 30px; margin-bottom: 15px; }
.legal-container p { color: var(--text-muted); margin-bottom: 15px; line-height: 1.8; }
.contact-form { display: flex; flex-direction: column; }

.footer { padding: 30px 0; color: var(--text-muted); font-size: 0.9rem; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }