/* Neobrutalist design system for CRON Explainer & Builder */

* {
    box-sizing: border-box;
}

body {
    font-family: 'Courier New', Courier, monospace;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    max-width: 950px;
    margin: 0 auto;
    padding: 40px 20px;
    transition: background-color 0.3s, color 0.3s;
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
}

header {
    border-bottom: 5px solid var(--border);
    padding-bottom: 20px;
    margin-bottom: 35px;
}

h1 {
    font-size: 2.2rem;
    margin: 0 0 10px 0;
    text-transform: uppercase;
    letter-spacing: -1px;
}

header p {
    font-size: 1rem;
    color: var(--muted);
    margin: 0;
}

.nav-btn {
    background: transparent;
    border: none;
    font-family: inherit;
    font-weight: 900;
    font-size: 0.85rem;
    cursor: pointer;
    color: var(--text);
    margin-right: 15px;
    padding: 0;
    border-bottom: 1px dotted var(--border);
}

.nav-btn:hover {
    background: var(--text);
    color: var(--bg);
}

/* Main Layout Grid */
.tool-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media(min-width: 850px) {
    .tool-grid {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

/* Card Styling */
.card {
    border: 3px solid var(--border);
    padding: 24px;
    background: var(--bg);
    margin-bottom: 24px;
    position: relative;
}

.card-title {
    font-size: 1.2rem;
    font-weight: bold;
    text-transform: uppercase;
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
    margin-top: 0;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

/* CRON Input Block */
.cron-input-wrapper {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.cron-input-wrapper input[type="text"] {
    flex-grow: 1;
    padding: 14px;
    font-family: inherit;
    font-size: 1.4rem;
    font-weight: bold;
    border: 3px solid var(--border);
    background: transparent;
    color: inherit;
    box-sizing: border-box;
    letter-spacing: 2px;
}

.cron-input-wrapper input[type="text"]::placeholder {
    opacity: 0.4;
}

/* Status Alert Panel */
.status-panel {
    padding: 16px;
    border: 2px dashed var(--border);
    font-size: 1.1rem;
    font-weight: bold;
    background: var(--tag-bg);
    margin-bottom: 25px;
    min-height: 56px;
}

.status-panel.error {
    border-color: var(--error);
    color: var(--error);
    background-color: rgba(239, 68, 68, 0.08);
}

.status-panel.success {
    border-color: var(--success);
    color: var(--success);
    background-color: rgba(34, 197, 94, 0.08);
}

/* Field Detail Grid */
.fields-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.field-badge {
    border: 2px solid var(--border);
    padding: 12px;
    text-align: center;
    background: var(--tag-bg);
}

.field-badge .field-name {
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    color: var(--muted);
    border-bottom: 1px solid var(--border);
    padding-bottom: 4px;
    margin-bottom: 8px;
}

.field-badge .field-value {
    font-size: 1.1rem;
    font-weight: bold;
    word-break: break-all;
}

/* Visual Builder Tabs */
.tab-bar {
    display: flex;
    border-bottom: 3px solid var(--border);
    overflow-x: auto;
    margin-bottom: 20px;
    gap: 5px;
}

.tab-btn {
    font-family: inherit;
    background-color: var(--bg);
    color: var(--text);
    border: 3px solid var(--border);
    border-bottom: none;
    padding: 10px 16px;
    font-weight: bold;
    text-transform: uppercase;
    cursor: pointer;
    font-size: 0.85rem;
    white-space: nowrap;
    transition: all 0.15s ease;
}

.tab-btn.active {
    background-color: var(--text);
    color: var(--bg);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Builder Controls */
.builder-mode-row {
    margin-bottom: 16px;
    border-bottom: 1px dashed var(--border);
    padding-bottom: 16px;
}

.builder-mode-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: bold;
    cursor: pointer;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.radio-label input[type="radio"] {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    background: var(--bg);
    cursor: pointer;
    position: relative;
}

.radio-label input[type="radio"]:checked::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    top: 3px;
    left: 3px;
    background: var(--text);
}

.control-subset {
    margin-left: 26px;
    margin-top: 10px;
}

.control-subset select, 
.control-subset input[type="number"] {
    font-family: inherit;
    font-size: 0.95rem;
    padding: 8px;
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--text);
    border-radius: 0;
    max-width: 120px;
}

/* Custom Checkbox Grid */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
    gap: 6px;
    max-height: 250px;
    overflow-y: auto;
    border: 2px solid var(--border);
    padding: 10px;
    background: var(--tag-bg);
}

.checkbox-item {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border);
    padding: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: bold;
    user-select: none;
    transition: all 0.1s;
    background: var(--bg);
    color: var(--text);
    text-align: center;
}

.checkbox-item.checked {
    background: var(--text);
    color: var(--bg);
}

.checkbox-item input {
    display: none;
}

/* Upcoming Occurrences List */
.execution-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.execution-item {
    border: 2px solid var(--border);
    padding: 10px 15px;
    margin-bottom: 8px;
    background: var(--tag-bg);
    display: flex;
    align-items: center;
    gap: 12px;
}

.execution-index {
    width: 24px;
    height: 24px;
    border: 1px solid var(--border);
    background: var(--text);
    color: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

.execution-time {
    font-weight: bold;
    font-size: 0.95rem;
}

.error-msg {
    color: var(--error);
    font-weight: bold;
}

/* Action button stylings */
.btn {
    font-family: inherit;
    background-color: var(--bg);
    color: var(--text);
    border: 2px solid var(--border);
    padding: 10px 18px;
    text-transform: uppercase;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 3px 3px 0 var(--border);
}

.btn:hover {
    background-color: var(--text);
    color: var(--bg);
}

.btn:active {
    transform: translate(1px, 1px);
    box-shadow: 2px 2px 0 var(--border);
}

/*Footer*/
      footer {
            margin-top: 60px;
            padding: 30px 20px;
            text-align: center;
            border-radius: 12px 12px 0 0;
        }

        footer a {
            color: var(--text);
            text-decoration: none;
            font-weight: 900;
            border: 2px solid var(--border);
            padding: 8px 16px;
            display: inline-block;
            transition: all 0.2s ease;
        }

        footer a:hover {
            background: var(--text);
            color: var(--bg);
        }

@media(max-width: 600px) {
    header h1 {
        font-size: 1.6rem;
    }
    .cron-input-wrapper {
        flex-direction: column;
    }
    .cron-input-wrapper input[type="text"] {
        font-size: 1.1rem;
        letter-spacing: 1px;
    }
    .fields-summary {
        grid-template-columns: repeat(2, 1fr);
    }
}