/* ==========================================================================
   ALAT TANDA TANGAN DIGITAL (PURE CSS) - ALAT TOOLS

   CATATAN: file ini TIDAK boleh berisi aturan untuk body, header, menu,
   atau hamburger. Semua itu diurus header.php (terpusat). Semua class
   di sini berawalan "ttd-".
   ========================================================================== */

:root {
    --ttd-primary: #2563eb;
    --ttd-primary-hover: #1d4ed8;
    --ttd-success: #16a34a;
    --ttd-success-hover: #15803d;
    --ttd-bg: #f8fafc;
    --ttd-card-bg: #ffffff;
    --ttd-text: #1e293b;
    --ttd-text-muted: #64748b;
    --ttd-border: #cbd5e1;
    --ttd-font: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Pembungkus halaman alat (pengganti aturan body lama) */
.ttd-container {
    box-sizing: border-box;
    max-width: 800px;
    margin: 0 auto;
    padding: 24px 12px 20px;
    font-family: var(--ttd-font);
    color: var(--ttd-text);
    line-height: 1.6;
}

.ttd-container *,
.ttd-container *::before,
.ttd-container *::after {
    box-sizing: border-box;
}

.ttd-header-section {
    text-align: left;
    margin-bottom: 1.5rem;
}

.ttd-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--ttd-text);
    margin: 0 0 0.5rem 0;
}

.ttd-lead {
    font-size: 1rem;
    color: var(--ttd-text-muted);
    margin: 0;
    text-align: justify;
}

/* Card Styling */
.ttd-card {
    background: var(--ttd-card-bg);
    border: 1px solid var(--ttd-border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
}

/* Toolbar Pen Settings */
.ttd-toolbar-settings {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    background: var(--ttd-bg);
    border: 1px solid var(--ttd-border);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 600px) {
    .ttd-toolbar-settings {
        grid-template-columns: 1fr;
    }
}

.ttd-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ttd-text);
    margin-bottom: 0.5rem;
}

.ttd-color-picker {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ttd-color-btn {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 50%;
    border: 2px solid #cbd5e1;
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s;
}

.ttd-color-btn:hover {
    transform: scale(1.1);
}

.ttd-color-btn.active {
    border-color: #0f172a;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.ttd-color-input {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--ttd-border);
    cursor: pointer;
    padding: 0;
    background: transparent;
}

.ttd-range {
    width: 100%;
    cursor: pointer;
    accent-color: var(--ttd-primary);
    margin-top: 6px;
}

/* Canvas Area */
.ttd-canvas-wrapper {
    margin-bottom: 1.25rem;
}

.ttd-canvas-box {
    position: relative;
    border: 2px dashed var(--ttd-border);
    border-radius: 12px;
    background: #fafafa;
    overflow: hidden;
}

.ttd-canvas-box canvas#sigCanvas {
    display: block;
    width: 100%;
    height: 350px;
    background: #ffffff;
    cursor: crosshair;
    touch-action: none;
    user-select: none;
}

.ttd-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 0.95rem;
    font-weight: 500;
    pointer-events: none;
    user-select: none;
}

/* Tombol Aksi */
.ttd-actions {
    display: flex;
    gap: 12px;
}

.ttd-btn {
    flex: 1;
    padding: 12px 16px;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: background 0.2s;
    text-align: center;
}

.ttd-btn-success {
    background-color: var(--ttd-success);
    color: #ffffff;
}

.ttd-btn-success:hover:not(:disabled) {
    background-color: var(--ttd-success-hover);
}

.ttd-btn-success:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ttd-btn-secondary {
    background-color: #64748b;
    color: #ffffff;
}

.ttd-btn-secondary:hover {
    background-color: #475569;
}

/* Section Panduan & Artikel */
.ttd-section-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    color: var(--ttd-text);
}

.ttd-section-lead {
    color: var(--ttd-text-muted);
    font-size: 0.95rem;
    margin: 0 0 1.25rem 0;
}

.ttd-steps {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ttd-steps li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: var(--ttd-bg);
    border: 1px solid #e2e8f0;
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.ttd-step-num {
    background: var(--ttd-primary);
    color: #fff;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.ttd-divider {
    border: 0;
    border-top: 1px solid var(--ttd-border);
    margin: 1rem 0;
}

.ttd-article-content {
    color: var(--ttd-text-muted);
    font-size: 0.95rem;
    text-align: justify;
}

.ttd-article-content p {
    margin-bottom: 1rem;
}

/* FAQ SUMMARY SYSTEM */
.ttd-faq-list details {
    border-bottom: 1px solid #e2e8f0;
    padding: 14px 0;
}

.ttd-faq-list details:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.ttd-faq-list summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--ttd-text);
    cursor: pointer;
    list-style: none; /* Sembunyikan panah default browser */
    user-select: none;
}

.ttd-faq-list summary::-webkit-details-marker {
    display: none; /* Chrome/Safari */
}

.ttd-faq-icon {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ttd-primary);
    transition: transform 0.2s ease, color 0.2s ease;
    line-height: 1;
}

.ttd-faq-icon::before {
    content: "+";
}

/* Saat details terbuka (open) */
.ttd-faq-list details[open] .ttd-faq-icon::before {
    content: "×";
}

.ttd-faq-list details[open] .ttd-faq-icon {
    color: #ef4444; /* Berubah jadi merah saat terbuka */
    font-size: 1.3rem;
}

.ttd-faq-answer {
    margin-top: 8px;
    padding-right: 20px;
}

.ttd-faq-answer p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--ttd-text-muted);
    line-height: 1.6;
}