/* ============================================================
   AIPC Converter Tools — World-Class Design
   Font: Outfit (Google Fonts loaded via WordPress)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=DM+Sans:wght@400;500;600&display=swap');

:root {
    --aipc-primary: #1e40af;
    --aipc-accent: #3b82f6;
    --aipc-accent2: #06b6d4;
    --aipc-dark: #0f172a;
    --aipc-text: #1e293b;
    --aipc-muted: #64748b;
    --aipc-bg: #f8fafc;
    --aipc-card: #ffffff;
    --aipc-border: #e2e8f0;
    --aipc-radius: 16px;
    --aipc-shadow: 0 4px 24px rgba(30,64,175,0.08);
    --aipc-font: 'Outfit', sans-serif;
}

.aipc-hub * { box-sizing: border-box; margin: 0; padding: 0; }
.aipc-hub { font-family: var(--aipc-font); color: var(--aipc-text); background: var(--aipc-bg); min-height: 100vh; }

/* ---- Hero ---- */
.aipc-hub-hero {
    position: relative;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #0369a1 100%);
    padding: 72px 24px 80px;
    text-align: center;
    overflow: hidden;
}
.aipc-hub-hero-bg {
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(59,130,246,0.2) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(6,182,212,0.15) 0%, transparent 60%);
}
.aipc-hub-hero-content { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }

.aipc-hub-badge {
    display: inline-block;
    background: rgba(59,130,246,0.25);
    border: 1px solid rgba(59,130,246,0.4);
    color: #93c5fd;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}
.aipc-hub-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.aipc-accent { color: #60a5fa; }
.aipc-hub-hero p {
    font-size: 1.1rem;
    color: #94a3b8;
    margin-bottom: 28px;
    line-height: 1.6;
}
.aipc-hub-trust {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}
.aipc-hub-trust span {
    font-size: 0.88rem;
    color: #cbd5e1;
    font-weight: 500;
}

/* ---- Tab Nav ---- */
.aipc-hub-nav {
    display: flex;
    gap: 8px;
    padding: 20px 24px;
    background: #fff;
    border-bottom: 1px solid var(--aipc-border);
    overflow-x: auto;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.aipc-tab-btn {
    flex-shrink: 0;
    padding: 10px 20px;
    border: 1.5px solid var(--aipc-border);
    background: #fff;
    border-radius: 50px;
    font-family: var(--aipc-font);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--aipc-muted);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.aipc-tab-btn:hover { border-color: var(--aipc-accent); color: var(--aipc-accent); }
.aipc-tab-btn.active {
    background: var(--aipc-primary);
    border-color: var(--aipc-primary);
    color: #fff;
}

/* ---- Tools Grid ---- */
.aipc-tab-panel { padding: 32px 24px; max-width: 1200px; margin: 0 auto; }
.aipc-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

/* ---- Tool Card ---- */
.aipc-tool-card {
    background: var(--aipc-card);
    border: 1.5px solid var(--aipc-border);
    border-radius: var(--aipc-radius);
    padding: 28px;
    box-shadow: var(--aipc-shadow);
    transition: all 0.25s;
}
.aipc-tool-card:hover {
    border-color: var(--aipc-accent);
    box-shadow: 0 8px 32px rgba(59,130,246,0.12);
    transform: translateY(-2px);
}
.aipc-tool-wide { grid-column: 1 / -1; }

.aipc-tool-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.aipc-tool-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--aipc-dark);
    margin-bottom: 6px;
}
.aipc-tool-card > p {
    font-size: 0.88rem;
    color: var(--aipc-muted);
    margin-bottom: 20px;
    line-height: 1.5;
}

/* ---- Upload Zone ---- */
.aipc-upload-zone {
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: #f8fafc;
}
.aipc-upload-zone:hover { border-color: var(--aipc-accent); background: #eff6ff; }
.aipc-upload-icon { font-size: 2.5rem; margin-bottom: 10px; }
.aipc-upload-text { font-size: 0.92rem; color: var(--aipc-text); margin-bottom: 6px; }
.aipc-upload-text strong { color: var(--aipc-accent); }
.aipc-upload-hint { font-size: 0.78rem; color: var(--aipc-muted); }

/* ---- Result Area ---- */
.aipc-result-area { margin-top: 16px; }
.aipc-preview-wrap { text-align: center; margin-bottom: 14px; }
.aipc-info-bar {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    padding: 8px 14px;
    font-size: 0.85rem;
    color: var(--aipc-primary);
    margin-bottom: 12px;
}
.aipc-success-msg {
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 0.9rem;
    color: #166534;
    margin-bottom: 12px;
}

/* ---- Controls ---- */
.aipc-controls {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 12px;
}
.aipc-controls label { font-size: 0.85rem; font-weight: 600; color: var(--aipc-text); }
.aipc-controls select, .aipc-controls input[type="number"] {
    padding: 6px 10px;
    border: 1.5px solid var(--aipc-border);
    border-radius: 8px;
    font-family: var(--aipc-font);
    font-size: 0.85rem;
}
.aipc-controls input[type="range"] { width: 120px; accent-color: var(--aipc-accent); }

.aipc-btn-primary {
    background: var(--aipc-primary);
    color: #fff;
    border: none;
    padding: 9px 20px;
    border-radius: 8px;
    font-family: var(--aipc-font);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.aipc-btn-primary:hover { background: #1d4ed8; transform: translateY(-1px); }

.aipc-btn-secondary {
    background: #f1f5f9;
    color: var(--aipc-text);
    border: 1.5px solid var(--aipc-border);
    padding: 9px 16px;
    border-radius: 8px;
    font-family: var(--aipc-font);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.aipc-btn-secondary:hover { background: var(--aipc-border); }

.aipc-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    padding: 12px 24px;
    border-radius: 10px;
    font-family: var(--aipc-font);
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    margin-top: 12px;
    box-shadow: 0 4px 12px rgba(16,185,129,0.3);
    transition: all 0.2s;
}
.aipc-download-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(16,185,129,0.4); }

/* ---- Textarea ---- */
.aipc-textarea {
    width: 100%;
    min-height: 160px;
    padding: 12px 14px;
    border: 1.5px solid var(--aipc-border);
    border-radius: 10px;
    font-family: 'DM Sans', monospace;
    font-size: 0.85rem;
    resize: vertical;
    color: var(--aipc-text);
    background: #fafafa;
    transition: border-color 0.2s;
}
.aipc-textarea:focus { outline: none; border-color: var(--aipc-accent); }

/* ---- Two Column Layout ---- */
.aipc-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ---- Text Stats ---- */
.aipc-text-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    padding: 12px 16px;
    background: #eff6ff;
    border-radius: 8px;
    margin: 10px 0;
    font-size: 0.88rem;
}
.aipc-text-stats strong { color: var(--aipc-primary); }

/* ---- PDF Links ---- */
.aipc-pdf-links { display: flex; flex-direction: column; gap: 10px; }
.aipc-pdf-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border: 1.5px solid var(--aipc-border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--aipc-text);
    background: #fafafa;
    transition: all 0.2s;
}
.aipc-pdf-link:hover { border-color: var(--aipc-accent); background: #eff6ff; transform: translateX(4px); }
.aipc-pdf-link > span:first-child { font-size: 1.5rem; }
.aipc-pdf-link div { flex: 1; }
.aipc-pdf-link strong { display: block; font-size: 0.95rem; margin-bottom: 2px; }
.aipc-pdf-link small { font-size: 0.78rem; color: var(--aipc-muted); }
.aipc-pdf-link > span:last-child { color: var(--aipc-accent); font-size: 1.1rem; }

/* ---- File List ---- */
.aipc-file-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.aipc-file-item {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 12px;
    background: #f1f5f9;
    border-radius: 8px;
    font-size: 0.85rem;
}

/* ---- Error/Loading ---- */
.aipc-error {
    background: #fef2f2; border: 1px solid #fca5a5;
    color: #b91c1c; padding: 10px 14px; border-radius: 8px;
    font-size: 0.88rem; margin-top: 10px;
}
.aipc-loading {
    text-align: center; padding: 20px;
    color: var(--aipc-muted); font-size: 0.9rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .aipc-hub-hero { padding: 48px 16px 56px; }
    .aipc-hub-nav { padding: 14px 16px; gap: 6px; }
    .aipc-tab-panel { padding: 20px 16px; }
    .aipc-tools-grid { grid-template-columns: 1fr; }
    .aipc-two-col { grid-template-columns: 1fr; }
    .aipc-hub-trust { gap: 12px; }
    .aipc-tool-wide { grid-column: auto; }
}