:root[data-theme="dark"] {
    --primary: #1dbf73;
    --bg: #020617;
    --card: rgba(255, 255, 255, 0.05);
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --input-bg: #0f172a;
    --footer: #020617;
    --cta-bg: #1dbf7311;
}

:root[data-theme="light"] {
    --primary: #1dbf73;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #020617;
    --text-muted: #475569;
    --border: #e2e8f0;
    --input-bg: #f1f5f9;
    --footer: #f1f5f9;
    --cta-bg: #1dbf7311;
}

body {
    margin: 0; padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
}

.container { max-width: 1000px; margin: 0 auto; padding: 40px 20px; }

.glass-nav {
    background: var(--bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
}

.nav-content {
    max-width: 1200px; margin: 0 auto;
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 20px;
}

.logo { font-size: 1.5rem; font-weight: 800; text-decoration: none; color: var(--text); }
.logo span { color: var(--primary); }
.nav-links { display: flex; align-items: center; }
.nav-links a { margin-left: 20px; text-decoration: none; color: var(--text-muted); font-weight: 600; }
.nav-links a:hover { color: var(--primary); }

.theme-btn {
    background: none; border: none; color: var(--text); padding: 8px;
    margin-left: 20px; cursor: pointer; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
}
.theme-btn:hover { background: var(--border); }
.theme-btn svg { width: 20px; height: 20px; }

[data-theme="dark"] .sun { display: block; }
[data-theme="dark"] .moon { display: none; }
[data-theme="light"] .sun { display: none; }
[data-theme="light"] .moon { display: block; }

.hero { text-align: center; margin-bottom: 60px; }
.hero h1 { font-size: 3.5rem; font-weight: 800; margin-bottom: 10px; }
.hero .lead { color: var(--text-muted); font-size: 1.2rem; }

.tool-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.1);
}

.form-group { margin-bottom: 25px; }
label { display: block; margin-bottom: 10px; font-weight: 600; color: var(--text); }
input, textarea {
    width: 100%; padding: 15px; background: var(--input-bg);
    border: 1px solid var(--border); border-radius: 12px;
    color: var(--text); font-size: 1rem; box-sizing: border-box;
}

.btn-main {
    background: var(--primary); color: white; border: none;
    padding: 18px 40px; border-radius: 12px; font-weight: 800;
    width: 100%; cursor: pointer; transition: 0.3s;
}

.btn-main:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(29,191,115,0.3); }

.brief-box { background: var(--input-bg); padding: 20px; border-radius: 12px; margin-bottom: 30px; }
pre { color: var(--primary); white-space: pre-wrap; margin: 0; }

.cta-box {
    text-align: center; padding: 30px; background: var(--cta-bg);
    border: 1px solid var(--primary); border-radius: 20px;
}

.expert-badge {
    background: var(--primary); display: inline-block; padding: 5px 15px;
    border-radius: 50px; font-size: 0.7rem; font-weight: 900; color: white; margin-bottom: 10px;
}

.btn-cta {
    display: inline-block; background: var(--primary); color: white;
    padding: 18px 36px; border-radius: 12px; font-weight: 800;
    text-decoration: none; margin-top: 20px; transition: 0.3s;
}

.expert-content { margin-top: 80px; }
.feat-img { width: 100%; border-radius: 24px; margin-top: 40px; filter: grayscale(20%); }

.link-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 15px; margin-top: 20px; }
.link-grid a { 
    background: var(--card); padding: 15px; border-radius: 12px;
    text-decoration: none; color: var(--text-muted); font-size: 0.9rem; border: 1px solid var(--border);
}
.link-grid a:hover { border-color: var(--primary); color: var(--text); }

.glass-footer { margin-top: 100px; padding: 60px 20px; border-top: 1px solid var(--border); background: var(--footer); }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; max-width: 1000px; margin: 0 auto; }
.disclosure { font-size: 0.8rem; color: var(--text-muted); text-align: center; margin-top: 40px; }
#footer-links { list-style: none; padding: 0; }
#footer-links li { margin-bottom: 8px; }
#footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; }