/* =============== GLOBAL STYLES =============== */
/* =============== THEME SYSTEM =============== */
/* Light theme (default) */
:root {
    --bg-color: #f5f5f5;
    --text-color: #212121;
    --primary-color: #0288d1;
    --primary-color-rgb: 2, 136, 209;
    --secondary-color: #fbc02d;
    --surface-color: #ffffff;
    --border-color: #e0e0e0;
    --error-bg: #ffebee;
    --error-text: #c62828;
    --grid-color: rgba(0, 0, 0, 0.1);
    --zeroline-color: rgba(0, 0, 0, 0.25);
}

/* Dark theme */
.dark-mode {
    --bg-color: #1e1e1e;
    --text-color: #f5f5f5;
    --primary-color: #4fc3f7;
    --primary-color-rgb: 79, 195, 247;
    --secondary-color: #ffca28;
    --surface-color: #2a2a2a;
    --border-color: #444;
    --error-bg: #3e2723;
    --error-text: #ef5350;
    --grid-color: rgba(255, 255, 255, 0.3);
    --zeroline-color: rgba(255, 255, 255, 0.45);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
        Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

/* =============== LAYOUT STRUCTURE =============== */
.app-container {
    width: 98vw;
    max-width: none;
    margin: 0 auto;
    padding: 0 1vw;
    box-sizing: border-box;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.app-header {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px 0;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
    position: relative;
}

.header-content h1 {
    color: var(--primary-color);
    margin: 0 0 8px 0;
    font-size: 2em;
}

.header-content p {
    margin: 0;
    font-size: 1em;
    opacity: 0.9;
}

.dashboard {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 15px;
}

/* =============== COMPONENT STYLES =============== */
/* File Uploader */
.file-uploader {
    padding: 30px;
    border: 3px dashed var(--border-color);
    border-radius: 10px;
    background-color: var(--surface-color);
    text-align: center;
    width: 100%;
    max-width: 800px;
    margin: 15px auto;
    cursor: pointer;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.file-uploader:hover {
    background-color: var(--bg-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.file-uploader > * {
    pointer-events: none;
}

.file-uploader input[type="file"] {
    display: none;
}

.file-uploader.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(var(--primary-color-rgb), 0.1);
}

/* Status Messages */
.status-message, .error-message {
    margin: 15px auto;
    padding: 12px;
    border-radius: 8px;
    width: 100%;
    max-width: 800px;
    text-align: center;
    box-sizing: border-box;
}

.status-message {
    font-size: 1.1em;
    color: var(--secondary-color);
}

.error-message {
    color: var(--error-text);
    background-color: var(--error-bg);
    border: 1px solid var(--error-text);
}

/* Theme Switcher & Header Controls */
.header-controls {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 10;
}

.github-link svg {
    display: block;
    fill: var(--text-color);
    transition: fill 0.2s ease-in-out;
}

.github-link:hover svg {
    fill: var(--primary-color);
}

.theme-switcher .switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.theme-switcher .switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.theme-switcher .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #555;
    transition: .4s;
    border-radius: 24px;
}

.theme-switcher .slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

.theme-switcher input:checked + .slider {
    background-color: var(--primary-color);
}

.theme-switcher input:checked + .slider:before {
    transform: translateX(24px);
}

/* Controls Bar */
.file-session-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 15px 20px;
    background-color: var(--surface-color);
    padding: 12px 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.session-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.session-selector select option[disabled] {
    color: #9e9e9e;
    font-style: italic;
}

.dark-mode .session-selector select option[disabled] {
    color: #757575;
}

.file-session-container label {
    font-weight: 500;
    color: var(--primary-color);
}

.file-session-container select {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 8px 12px;
    font-size: 0.9em;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.dark-mode .file-session-container select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%239ca3af' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
}

.file-session-container select:hover {
    border-color: var(--primary-color);
}

.file-session-container select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.2);
}

.single-session-text {
    font-style: italic;
    opacity: 0.8;
}

.sync-zoom-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sync-zoom-toggle label {
    font-weight: 500;
    font-size: 0.9em;
    color: var(--text-color);
    cursor: pointer;
}

.sync-zoom-toggle input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 38px;
    height: 20px;
    border-radius: 20px;
    background-color: #ccc;
    outline: none;
    cursor: pointer;
    position: relative;
    transition: background-color 0.3s;
}

.dark-mode .sync-zoom-toggle input[type="checkbox"] {
    background-color: #555;
}

.sync-zoom-toggle input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: white;
    top: 2px;
    left: 2px;
    transition: transform 0.3s;
}

.sync-zoom-toggle input[type="checkbox"]:checked {
    background-color: var(--primary-color);
}

.sync-zoom-toggle input[type="checkbox"]:checked::before {
    transform: translateX(18px);
}

/* Plotly Chart Wrapper & Container */
.plotly-wrapper {
    padding: 10px;
    border-radius: 8px;
    background-color: var(--surface-color);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 10px;
}

.plotly-chart-container {
    height: 350px;
    width: 100%;
    position: relative;
}


/* =============== TABS & LOG VIEWER =============== */
.tab-container {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.tab-navigation {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-navigation button {
    padding: 10px 20px;
    cursor: pointer;
    border: none;
    background-color: transparent;
    color: var(--text-color);
    opacity: 0.7;
    border-bottom: 3px solid transparent;
    font-size: 1em;
}

.tab-navigation button.active {
    opacity: 1;
    border-bottom: 3px solid var(--primary-color);
    font-weight: 600;
}

.tab-content {
    flex-grow: 1;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 8px 8px;
    padding: 15px;
    position: relative;
    overflow-y: auto;
}

.filtering-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
    color: white;
    font-size: 1.2em;
    border-radius: 0 0 8px 8px;
}

.log-viewer-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-color);
    opacity: 0.6;
}

.log-viewer-container {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    height: 100%;
    overflow: auto;
}

.log-line {
    display: flex;
    white-space: pre;
}

.log-line .line-number {
    flex-shrink: 0;
    width: 50px;
    text-align: right;
    padding-right: 15px;
    color: var(--text-color);
    opacity: 0.5;
    user-select: none;
}

.log-line.highlighted {
    background-color: rgba(var(--primary-color-rgb), 0.15);
}

/* =============== RESPONSIVE DESIGN =============== */
@media (max-width: 767px) {
    .app-header {
        padding: 10px 0;
    }

    .header-content h1 {
        font-size: 1.7em;
    }

    .header-content p {
        font-size: 0.92em;
    }

    .header-controls {
        position: static;
        margin-top: 12px;
        justify-content: center;
        width: 100%;
    }

    .file-uploader {
        padding: 20px;
        margin: 10px auto;
    }
}