:root {
    --blue-dark: #0a58ca;
    --blue-main: #0d6efd;
    --blue-pale: #eff6ff;
    --border-blue: #93c5fd;
    --bg-light: #F8F9FA;
}

body {
    background-color: var(--bg-light);
    font-family: system-ui, -apple-system, sans-serif;
}

/* Header */
.custom-header {
    background-color: var(--blue-dark);
    color: white;
    padding: 15px 0;
}

/* Main Layout */
.main-flex-container {
    display: flex;
    min-height: auto;
}

@media (max-width: 768px) {
    .main-flex-container {
        flex-direction: column;
    }
}

.sidebar-menu {
    width: 25%;
    background: white;
    border-right: 1px solid #E0E0E0;
    padding: 20px;
}

@media (max-width: 768px) {
    .sidebar-menu {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #e2e8f0;
        padding: 1rem;
    }
}

.work-area {
    width: 75%;
    padding: 30px;
}

@media (max-width: 768px) {
    .work-area {
        width: 100%;
        padding: 1rem;
    }
}

/* Menu Items */
.menu-item {
    padding: 12px 15px;
    margin-bottom: 5px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #333333;
    text-decoration: none;
}

.menu-item-icon {
    display: inline-block;
    width: 1.25rem;
    flex-shrink: 0;
    text-align: center;
    font-size: 0.95rem;
    line-height: 1;
}

.menu-item.active {
    background-color: var(--blue-pale);
    color: var(--blue-main);
    font-weight: bold;
}

.menu-item:hover {
    background-color: var(--blue-pale) !important;
    color: var(--blue-main) !important;
    font-weight: bold !important;
}

.menu-item:hover * {
    color: var(--blue-main) !important;
}

.sidebar-info {
    font-size: 0.8rem;
    color: #94a3b8;
    padding: 0.5rem 0;
    border-top: 1px dashed #e2e8f0;
    margin-top: 1rem;
    line-height: 1.8;
}

/* Card & Tool Design */
.tool-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    padding: 25px;
}

.tool-title {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--blue-dark);
    margin-bottom: 20px;
}

.settings-bar {
    display: flex;
    gap: 20px;
    background: var(--bg-light);
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.btn-primary {
    background-color: var(--blue-main) !important;
    border-color: var(--blue-main) !important;
}

.btn-primary:hover {
    background-color: var(--blue-dark) !important;
}

.custom-blue-checkbox:checked {
    background-color: var(--blue-main) !important;
    border-color: var(--blue-main) !important;
}
.custom-blue-checkbox:focus {
    border-color: var(--border-blue) !important;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25) !important;
}

/* Output Textarea */
.output-area {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    background: #f8fafc !important;
    color: #0f172a;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
}

.mono-textarea {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    transition: 0.2s;
}

.mono-textarea:focus {
    border-color: var(--border-blue);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

/* Tree View */
.tree-container {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 14px 16px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.88rem;
    max-height: 600px;
    overflow: auto;
    line-height: 1.7;
}

.tree-node-header {
    cursor: pointer;
    user-select: none;
}
.tree-node-header:hover {
    background: var(--blue-pale);
    border-radius: 4px;
}

.tree-toggle {
    display: inline-block;
    width: 14px;
    color: var(--blue-main);
    font-size: 0.7rem;
}

.tree-key {
    color: #9333ea;
    font-weight: 600;
}

.tree-bracket {
    color: #64748b;
    font-weight: 700;
}

.tree-summary {
    color: #94a3b8;
    font-style: italic;
    display: none;
    margin: 0 4px;
}
.tree-bracket-inline {
    display: none;
    color: #64748b;
    font-weight: 700;
}

.tree-node.collapsed > .tree-children {
    display: none;
}
.tree-node.collapsed > .tree-node-header .tree-summary,
.tree-node.collapsed > .tree-node-header .tree-bracket-inline {
    display: inline;
}

.tree-children {
    margin-left: 20px;
    border-left: 1px dashed #cbd5e1;
    padding-left: 10px;
}

.tree-bracket-close {
    color: #64748b;
    font-weight: 700;
}

.tree-leaf {
    padding: 1px 4px;
    border-radius: 4px;
}

.tree-value {
    cursor: text;
}
.tree-value:hover {
    outline: 1px dashed var(--border-blue);
}
.tree-value-string { color: #059669; }
.tree-value-number { color: #2563eb; }
.tree-value-boolean { color: #d97706; font-weight: 600; }
.tree-value-null { color: #94a3b8; font-style: italic; }

.tree-value-input {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.88rem;
    border: 1px solid var(--blue-main);
    border-radius: 4px;
    padding: 0 4px;
    min-width: 60px;
}
.tree-value-input.invalid {
    border-color: #dc2626;
    background: #fef2f2;
}

.tree-highlight {
    background: #fef08a;
    border-radius: 3px;
}

/* Error Alert Box */
.error-box {
    background: #fef2f2;
    border: 1px solid #fca5a5;
    color: #991b1b;
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

/* Copy / Download Buttons */
.btn-copy {
    background: white;
    border: 1px solid #cbd5e1;
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: #475569;
    border-radius: 6px;
    transition: 0.2s;
}

.btn-copy:hover {
    background-color: var(--blue-pale);
    border-color: var(--border-blue);
    color: var(--blue-main);
}

.btn-copy.copy-success {
    background: #d1fae5;
    border-color: #a7f3d0;
    color: #065f46;
}

/* Info Pages Full Layout (About / Learn / Contact) */
.info-pages-full {
    background: white;
    margin: 30px;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    clear: both;
}

.info-tabs-full {
    display: flex;
    border-bottom: 2px solid #E0E0E0;
    margin-bottom: 20px;
}

.info-tab-full {
    padding: 10px 20px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.info-tab-full.active {
    border-bottom-color: var(--blue-main);
    color: var(--blue-main);
    font-weight: bold;
}

/* Feedback Form */
.feedback-container-box {
    max-width: 650px;
    background: #f4f6f9;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.feedback-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: #1e293b;
    display: flex;
    align-items: center;
    gap: 10px;
}
.feedback-title i {
    color: var(--blue-main);
}

.feedback-subtitle {
    color: #64748b;
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.feedback-textarea, .feedback-input-email {
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 10px 12px;
}
.feedback-textarea:focus, .feedback-input-email:focus {
    border-color: var(--border-blue);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

.btn-feedback-submit {
    background-color: var(--blue-main);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.2s;
}
.btn-feedback-submit:hover {
    background-color: var(--blue-dark);
    color: white;
}

.custom-footer {
    padding: 20px 0;
    background: #eaeaea;
    border-top: 1px solid #ddd;
}

/* ============================================================
   AD BANNER -- disisipkan otomatis oleh apply-ad-css.php
   ============================================================ */
.ad-banner {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    overflow: hidden;
    background: #eef1f5;
}

.ad-banner.ad-top {
    padding: 10px 0;
    min-height: 90px;
    margin-bottom: 1.5rem;
    border-radius: 8px;
}

.ad-banner.ad-in-content {
    padding: 10px 0;
    min-height: 60px;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.ad-banner.ad-footer {
    padding: 10px 0;
    min-height: 90px;
    margin-bottom: 1rem;
    border-radius: 8px;
}

.ad-banner span {
    color: #94a3b8;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 1px dashed #cbd5e1;
    padding: 8px 24px;
    border-radius: 4px;
}