/* public/css/base.css */

/* --- Root Theme Variables --- */
:root {
    --color-bg: #f4f7f9;
    --color-bg-secondary: #fff;
    --color-bg-tertiary: #f8f9fa;
    --color-bg-accent: #e9ecef;
    --color-text: #333;
    --color-text-secondary: #6c757d;
    --color-text-muted: #888;
    --color-primary: #007bff;
    --color-primary-hover: #0056b3;
    --color-border: #ddd;
    --color-border-secondary: #dee2e6;
    --color-header-bg: #007bff;
    --color-header-text: #fff;
    --color-footer-bg: #343a40;
    --color-footer-text: #adb5bd;
    --color-footer-link: #ced4da;
    --color-shadow: rgba(0, 0, 0, 0.05);
    --color-highlight-bg: #fdff85;
    --color-highlight-text: #333;
    --folder-icon-color: #5a6268;
    --file-icon-color: #007bff;
    --selected-bg: #007bff;
    --selected-text: #fff;
    --tree-line-color: #ccc;
    --pruning-bg: rgba(33, 37, 41, 0.9);

    /* Mapper & Form Colors */
    --color-danger: #dc3545;
    --color-danger-hover: #c82333;
    --color-success: #28a745;
    --color-success-hover: #218838;
    --color-code-bg: var(--color-bg-tertiary);
    --color-code-text: var(--color-text);
    --color-mapped-source: #8e44ad; /* Purple */
    --color-mapped-target: #27ae60; /* Green */
}

/* --- Dark Mode Theme Variables --- */
body.dark-mode {
    --color-bg: #1a1a1a;
    --color-bg-secondary: #2c2c2c;
    --color-bg-tertiary: #222;
    --color-bg-accent: #3a3a3a;
    --color-text: #e0e0e0;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #888;
    --color-primary: #3391ff;
    --color-primary-hover: #5caaff;
    --color-border: #444;
    --color-border-secondary: #555;
    --color-header-bg: #1f1f1f;
    --color-header-text: #e0e0e0;
    --color-footer-bg: #1f1f1f;
    --color-footer-text: #a0a0a0;
    --color-footer-link: #ccc;
    --color-shadow: rgba(0, 0, 0, 0.2);
    --color-highlight-bg: #b8860b;
    --color-highlight-text: #fff;
    --folder-icon-color: #a0a0a0;
    --file-icon-color: #3391ff;
    --selected-bg: #3391ff;
    --selected-text: #1a1a1a;
    --tree-line-color: #555;
    --pruning-bg: rgba(200, 200, 200, 0.9);

    /* Mapper & Form Colors */
    --color-danger: #e06c75;
    --color-danger-hover: #f08080;
    --color-success: #98c379;
    --color-success-hover: #b0e090;
    --color-code-bg: #21252b;
    --color-code-text: #abb2bf;
    --color-mapped-source: #bb86fc; /* Light Purple */
    --color-mapped-target: #03dac6; /* Teal */
}

/* --- Base Layout & Typography --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background-color: var(--color-bg);
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    height: 100vh;
    /* [MODIFIED] Removed overflow: hidden; */
}

/* --- Header [MODIFIED] --- */
header {
    background-color: var(--color-header-bg);
    color: var(--color-header-text);
    padding: 8px 20px; /* Reduced padding */
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header h1 { margin: 0; font-size: 1.25em; text-align: left; } /* Reduced font size */
header p { margin: 0 0 0 10px; font-size: 0.8em; opacity: 0.9; text-align: left; } /* Reduced margin and font size */

.datetime-container {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1em; /* Reduced font size */
    font-weight: bold;
    background-color: rgba(0, 0, 0, 0.1);
    padding: 4px 8px; /* Reduced padding */
    border-radius: 4px;
}

/* --- Theme Switcher --- */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}
.theme-label {
    font-size: 0.9em;
    color: var(--color-header-text);
    user-select: none;
}
.theme-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}
.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #777;
    transition: .4s;
}
.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}
input:checked + .slider {
    background-color: var(--color-primary);
}
input:checked + .slider:before {
    transform: translateX(20px);
}
.slider.round {
    border-radius: 24px;
}
.slider.round:before {
    border-radius: 50%;
}

/* --- Simulator Controls --- */
.simulator-controls {
    display: none;
    align-items: center;
    gap: 10px;
    background-color: rgba(0, 0, 0, 0.1);
    padding: 5px 10px;
    border-radius: 4px;
}

.simulator-controls button {
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
}

.simulator-controls button:hover {
    background-color: var(--color-bg-accent);
}

/* [NEW] Added disabled styles */
.simulator-controls button:disabled {
    background-color: var(--color-bg-accent);
    color: var(--color-text-muted);
    cursor: not-allowed;
    opacity: 0.6;
}
.simulator-controls button:disabled:hover {
    background-color: var(--color-bg-accent);
}

.status-indicator {
    font-weight: bold;
    font-size: 14px;
    padding-left: 18px;
    position: relative;
    color: var(--color-header-text);
}

.status-indicator::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: grey;
}

.status-indicator.stopped::before {
    background-color: #dc3545;
}

.status-indicator.running::before {
    background-color: #28a745;
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0% { box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7); }
    70% { box-shadow: 0 0 0 8px rgba(40, 167, 69, 0); }
    100% { box-shadow: 0 0 0 0 rgba(40, 167, 69, 0); }
}

/* --- Header Buttons --- */
.nav-button {
    color: var(--color-header-text);
    text-decoration: none;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 5px 10px;
    border-radius: 4px;
    transition: background-color 0.2s;
}
body.dark-mode .nav-button {
    background-color: rgba(255, 255, 255, 0.1);
}
.nav-button:hover {
    background-color: rgba(255, 255, 255, 0.3);
}
.icon-button {
    font-size: 1.25em; /* Reduced font size */
    padding: 0 10px;
}

/* --- Tab Navigation --- */
.tab-nav {
    background-color: var(--color-bg-accent);
    padding: 0 20px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    flex-shrink: 0;
}

.tab-button {
    padding: 8px 16px;
    border: none;
    background-color: transparent;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-bottom: 3px solid transparent;
    transition: all 0.2s ease-in-out;
}
.tab-button:hover { color: var(--color-primary); }
.tab-button.active { color: var(--color-primary); border-bottom: 3px solid var(--color-primary); }

/* --- View Container --- */
.view-container {
    flex-grow: 1;
    overflow: hidden; /* [MODIFIED] Keep this, but we'll manage children */
    position: relative;
    display: flex; /* [NEW] Make this a flex container */
}
.view {
    display: none;
    width: 100%;
    height: 100%;
    /* [MODIFIED] Was position: absolute, now let it be a flex item */
    flex-direction: column; /* [NEW] Default to column for mobile */
}
.view.active {
    display: flex;
}

/* --- Footer [MODIFIED] --- */
.app-footer {
    background-color: var(--color-footer-bg);
    color: var(--color-footer-text);
    text-align: center;
    padding: 2px 5px; /* Reduced padding */
    font-size: 0.75em; /* Reduced font size */
    flex-shrink: 0;
}
.app-footer a {
    color: var(--color-footer-link);
    text-decoration: none;
}
.app-footer a:hover {
    text-decoration: underline;
}

/* --- Shared: Panel Resizers --- */
.resizer { /* Vertical */
    flex: 0 0 5px;
    cursor: col-resize;
    background-color: var(--color-bg-accent);
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
    transition: background-color 0.2s ease;
    z-index: 5;
}
.resizer:hover {
    background-color: var(--color-primary);
}

.resizer-horizontal { /* Horizontal */
    flex: 0 0 5px;
    cursor: row-resize;
    background-color: var(--color-bg-accent);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    width: 100%;
    margin: 0; /* [MODIFIED] Remove margin */
    transition: background-color 0.2s ease;
    z-index: 5;
}
.resizer-horizontal:hover {
    background-color: var(--color-primary);
}

/* --- Shared: Base Payload Panel Styles --- */
/* (Used by Tree, Mapper, Chart) */
.payload-container {
    flex-grow: 1;
    min-width: 0; /* [MODIFIED] Allow shrinking */
    padding: 20px;
    box-sizing: border-box;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg-secondary);
}

#payload-main-area,
#mapper-payload-area,
#chart-payload-area {
    flex: 0 0 60%;
    display: flex;
    flex-direction: column;
    min-height: 0; /* [MODIFIED] Was 0, changed to 150px for safety */
}

.payload-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.payload-header h2 {
    margin: 0;
}

.payload-topic-display {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    color: var(--color-text-secondary);
    padding: 8px 15px;
    background-color: var(--color-bg-accent);
    border-radius: 4px 4px 0 0;
    border: 1px solid var(--color-border-secondary);
    border-bottom: none;
    word-break: break-all;
    margin-top: 10px;
}

pre#payload-content,
pre#mapper-payload-content,
#chart-payload-area pre { /* chart pre is not used, but good to have */
    background-color: var(--color-bg-tertiary);
    color: var(--color-text);
    padding: 15px;
    border-radius: 0 0 5px 5px;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 14px;
    margin: 0;
    border: 1px solid var(--color-border-secondary);
    flex-grow: 1;
    overflow-y: auto;
}

/* --- Shared: Base Tree Styles --- */
/* (Used by Tree, Mapper, Chart) */
.tree-container {
    padding: 10px 20px;
    overflow-y: auto;
    box-sizing: border-box;
    flex-grow: 1;
}

.tree-container ul { list-style-type: none; padding-left: 0; margin-left: 20px; }
.tree-container li {
    margin: 0;
    padding: 0 0 0 22px;
    position: relative;
    line-height: 24px;
    --line-color: var(--tree-line-color);
}
.tree-container li::before, .tree-container li::after {
    content: '';
    position: absolute;
    border-color: var(--line-color);
    transition: border-color 0.3s ease-out;
}
.tree-container li::before { top: 0; left: 0; border-left: 1px solid; width: 1px; height: 100%; }
.tree-container li::after { top: 12px; left: 0; border-top: 1px solid; width: 15px; height: 1px; }
.tree-container li:last-child::before { height: 12px; }

.tree-container .node-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2px 6px;
    border-radius: 4px;
    background-color: transparent;
    position: relative;
}
.tree-container .node-name { display: inline-flex; align-items: center; }
.tree-container .node-timestamp { font-size: 0.75em; color: var(--color-text-muted); margin-left: 15px; font-family: 'Courier New', Courier, monospace; }

.node-name::before { content: ''; display: inline-block; width: 16px; height: 16px; margin-right: 6px; background-size: contain; background-repeat: no-repeat; background-position: center; }

/* Folder/File icons */
.is-folder > .node-container { font-weight: 500; cursor: pointer; }
.is-folder:not(.collapsed) .node-name::before { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235a6268'%3E%3Cpath d='M1 2.5A1.5 1.5 0 0 1 2.5 1h3.793a1.5 1.5 0 0 1 1.06.44L8.854 2.94a.5.5 0 0 1 .146.353V4.5h6.5a.5.5 0 0 1 .5.5v7a.5.5 0 0 1-.5.5H1a.5.5 0 0 1-.5-.5V2.5zM2.5 2a.5.5 0 0 0-.5.5V12h12V5H8.5a.5.5 0 0 1-.5-.5V3.354a.5.5 0 0 1 .146-.353L9.146 2H2.5z'/%3E%3C/svg%3E"); }
.is-folder.collapsed .node-name::before { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235a6268'%3E%3Cpath d='M.5 1a.5.5 0 0 0-.5.5v11a.5.5 0 0 0 .5.5h15a.5.5 0 0 0 .5-.5V3a.5.5 0 0 0-.5-.5H8.5a.5.5 0 0 1-.408-.182L6.818 1.09A.5.5 0 0 0 6.409 1H.5z'/%3E%3C/svg%3E"); }
body.dark-mode .is-folder .node-name::before { filter: brightness(0) invert(0.8); }

.is-file > .node-container { color: var(--color-primary-hover); cursor: pointer; }
.is-file > .node-container:hover { background-color: var(--color-bg-accent); }
.is-file .node-name::before { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23007bff'%3E%3Cpath d='M4 0h8a2 2 0 0 1 2 2v12a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2zm0 1a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V2a1 1 0 0 0-1-1H4z'/%3E%3Cpath d='M4.5 3h7a.5.5 0 0 1 0 1h-7a.5.5 0 0 1 0-1zM4.5 5h7a.5.5 0 0 1 0 1h-7a.5.5 0 0 1 0-1z'/%3E%3C/svg%3E"); }
body.dark-mode .is-file .node-name::before { filter: brightness(0) invert(0.6) sepia(1) hue-rotate(180deg) saturate(5); }

/* --- Shared: Tree Coloring (Mapper & Chart) --- */
.tree-container .mapped-source > .node-container > .node-name {
    color: var(--color-mapped-source);
    font-weight: bold;
}
.tree-container .is-file.mapped-source > .node-container > .node-name {
    color: var(--color-mapped-source);
}
.tree-container .mapped-target > .node-container > .node-name {
    color: var(--color-mapped-target);
    font-style: italic;
}
.tree-container .is-file.mapped-target > .node-container {
    color: var(--color-mapped-target);
}
.tree-container .is-file.mapped-target .node-name::before {
    filter: invert(60%) sepia(30%) saturate(1500%) hue-rotate(90deg);
}
body.dark-mode .is-file.mapped-target .node-name::before {
    filter: invert(80%) sepia(50%) saturate(2000%) hue-rotate(100deg);
}

.tree-container .has-charted-variable > .node-container > .node-name {
    color: var(--color-mapped-target); /* Use the green 'target' color */
    font-weight: bold;
    font-style: italic;
}

/* --- Shared: Time Slider --- */
/* (Used by History, SVG, Chart) */
.time-slider-container {
    position: relative;
    width: 100%;
    height: 20px;
    padding: 8px 0;
    box-sizing: content-box;
}

.slider-track, .slider-range {
    position: absolute;
    left: 0;
    height: 4px;
    border-radius: 2px;
    top: 50%;
    transform: translateY(-50%);
}
.slider-track {
    width: 100%;
    background-color: var(--color-bg-accent);
}
.slider-range {
    background-color: var(--color-primary);
}
.slider-handle {
    position: absolute;
    top: 50%;
    width: 16px;
    height: 16px;
    background-color: var(--color-bg-secondary);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: grab;
    z-index: 2;
}
.slider-handle:active {
    cursor: grabbing;
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-primary) 25%, transparent);
}
.slider-label {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-footer-bg);
    color: var(--color-header-text);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 12px;
    white-space: nowrap;
    font-family: 'Courier New', Courier, monospace;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}
.slider-handle:hover .slider-label, .slider-handle:active .slider-label {
    opacity: 1;
}

/* --- Shared: Placeholders --- */
.history-placeholder {
    padding: 15px;
    color: var(--color-text-secondary);
    font-style: italic;
    margin: 0;
}

/* --- Shared: Modal Styles --- */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal-content {
    background-color: var(--color-bg-secondary);
    padding: 25px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    width: 90%;
    max-width: 500px;
}

.modal-content h3 {
    margin-top: 0;
    color: var(--color-text);
}

.modal-topic-display {
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    background-color: var(--color-bg-accent);
    padding: 8px 12px;
    border-radius: 4px;
    word-break: break-all;
}

.modal-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 1em;
    box-sizing: border-box;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: 'Courier New', Courier, monospace;
}
.modal-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.modal-actions {
    margin-top: 25px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.modal-button {
    padding: 8px 15px;
    font-size: 0.9em;
    font-weight: 500;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-tertiary);
    color: var(--color-text);
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}
.modal-button:hover {
    background-color: var(--color-bg-accent);
    border-color: var(--color-border-secondary);
}

.modal-button.button-primary {
    background-color: var(--color-primary);
    color: var(--color-header-text);
    border-color: var(--color-primary);
}
.modal-button.button-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

.modal-button.button-danger,
.danger-button {
    background-color: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
    border: none;
}
.modal-button.button-danger:hover,
.danger-button:hover {
    background-color: var(--color-danger-hover);
    border-color: var(--color-danger-hover);
}
.danger-button {
    padding: 4px 10px;
    font-size: 0.9em;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.2s;
}


/* --- Shared: Form Styles --- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 5px;
}

.form-group input[type="text"], 
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 1em;
    box-sizing: border-box;
    background-color: var(--color-bg);
    color: var(--color-text);
}
.form-group select {
    padding: 8px 10px;
}

.checkbox-label {
    font-weight: 500;
    cursor: pointer;
    user-select: none;
}


/* --- [NEW] Mobile Responsive Styles --- */
@media (max-width: 768px) {
    /* --- Base Layout --- */
    body {
        height: auto; /* Allow scrolling on mobile */
        min-height: 100vh;
    }
    .view-container {
        /* Allow view-container to grow and enable scrolling */
        overflow: auto; 
        height: auto;
    }
    .view.active {
        /* Views are already flex-direction: column by default now */
        height: auto; /* Allow view to grow with content */
    }

    /* --- Header --- */
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 10px 15px;
    }
    header h1 { font-size: 1.1em; }
    header p { display: none; } /* Hide subtitle */

    .datetime-container {
        font-size: 0.9em;
        align-self: flex-end; /* Move to the right on its own line */
        margin-top: -30px; /* Pull it up next to title */
    }
    
    .header-content {
        max-width: calc(100% - 100px); /* Don't overlap datetime */
    }

    /* Stack theme switcher and config button */
    .theme-switch-wrapper {
        align-self: flex-start;
        padding: 5px 0;
    }
    #btn-config-view {
        align-self: flex-start;
        margin-left: 0;
        margin-top: 5px;
    }
    
    .simulator-controls {
        flex-wrap: wrap;
        width: 100%;
        justify-content: center;
    }

    /* --- Tab Navigation --- */
    .tab-nav {
        padding: 0 5px;
        /* Allow tabs to scroll horizontally if they don't fit */
        overflow-x: auto;
        white-space: nowrap;
    }
    .tab-button {
        font-size: 14px;
        padding: 8px 10px;
    }

    /* --- Resizers --- */
    /* Hide all resizers on mobile, as we force a column layout */
    .resizer, .resizer-horizontal {
        display: none;
    }
    
    /* --- Shared Panels --- */
    .payload-container {
        padding: 10px;
        min-height: 300px; /* Give payload area a min height */
        height: auto;
        flex-grow: 1;
    }
    #payload-main-area,
    #mapper-payload-area,
    #chart-payload-area {
        flex-basis: auto !important; /* Ignore JS-set flex-basis */
        flex-grow: 1;
        min-height: 200px; /* Ensure it's visible */
    }

    .tree-container {
        padding: 10px;
    }
}