/* --- NORDIC-INSPIRED THEME --- */

/* 1. VARIABLES & GLOBAL STYLES */
:root {
    --font-sans: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    /* Light Theme Palette */
    --bg-color: #f4f7f9;
    --card-bg: #ffffff;
    --text-color: #212529;
    --light-text: #6c757d;
    --border-color: #dee2e6;
    --primary-color: #7ad6e6;
    --primary-hover: #62c0d0;
    --secondary-color: #e9ecef;
    --error-color: #d9534f;
    --warning-color: #f0ad4e;
    --system-color: #5bc0de;
    --pin-bg-available: #ced4da;
    --pin-bg-special: #6c757d;
    --shadow-color: rgba(0, 0, 0, 0.05);
}

body.dark-mode {
    --bg-color: #1a202c;
    --card-bg: #2d3748;
    --text-color: #e2e8f0;
    --light-text: #a0aec0;
    --border-color: #4a5568;
    --primary-color: #2dd4bf;
    --primary-hover: #26bba9;
    --secondary-color: #4a5568;
    --error-color: #e57373;
    --warning-color: #ffb74d;
    --system-color: #4dd0e1;
    --pin-bg-available: #4a5568;
    --pin-bg-special: #718096;
    --shadow-color: rgba(0, 0, 0, 0.2);
}

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

body {
    margin: 0;
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

h1, h2, h3, p {
    margin: 0;
}

h2 {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    font-size: 1.25rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-hover);
}

/* 2. LAYOUT & STRUCTURE */
.container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 1.5rem;
}

.content-grid {
    display: grid;
    grid-template-columns: 380px 1fr 380px;
    gap: 1.5rem;
    align-items: flex-start;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.main-view {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px var(--shadow-color);
    padding: 1.5rem;
    transition: background-color 0.3s, border-color 0.3s;
    display: flex;
    flex-direction: column;
}

.footer {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 2rem;
    padding: 2rem 0;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--light-text);
    font-size: 0.9rem;
}
.footer > p { justify-self: start; }
.footer .github-link { justify-self: end; }
.footer-note { text-align: center; font-size: 0.85rem; }

.github-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--light-text);
}

.github-icon {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* 3. COMPONENTS */

.header-title .subtitle {
    font-size: 1.1rem;
    font-weight: 500;
    margin-top: 0.25rem;
    color: var(--light-text);
}

.header-title .subtitle a {
    color: var(--text-color);
    text-decoration: none;
    border-bottom: 2px solid var(--primary-color);
    transition: all 0.2s;
}
.header-title .subtitle a:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-hover);
}

.theme-switch-container { display: flex; align-items: center; gap: 0.75rem; }
.theme-icon { stroke: var(--light-text); transition: stroke 0.3s; }
body:not(.dark-mode) #sun-icon { stroke: var(--warning-color); }
body.dark-mode #moon-icon { stroke: var(--primary-color); }

/* Theme Switch */
.theme-switch-wrapper { display: flex; align-items: center; }
.theme-switch { position: relative; display: inline-block; width: 50px; 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: #ccc; transition: .4s; }
.slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: white; transition: .4s; }
input:checked + .slider { background-color: var(--primary-color); }
input:checked + .slider:before { transform: translateX(26px); }
.slider.round { border-radius: 24px; }
.slider.round:before { border-radius: 50%; }

/* Package & MCU Selectors */
.selector-group { display: flex; flex-direction: column; gap: 0.5rem; }
.selector-group:not(:last-child) { margin-bottom: 1rem; }
select, .search-box, input[type="file"], textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 1rem;
}
select[size] {
    padding: 0;
}
select[size] option {
    padding: 0.5rem 0.75rem;
}

/* Sidebar & Right Panel Content */
.sidebar-content, .selected-view {
    flex-grow: 1;
    min-height: 0; /* Important for flex + overflow */
}
#content-peripherals, #content-selected {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-height: 0;
}
#peripherals-list {
    overflow-y: auto;
    flex-grow: 1;
    margin-top: 1rem;
    min-height: 400px;
}
#selectedList {
    overflow-y: auto;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

/* Peripherals List */
#peripherals-list { display: flex; flex-direction: column; gap: 0.5rem; }
.accordion { border: 1px solid var(--border-color); border-radius: 6px; overflow: hidden; }
.accordion-item:not(:last-child) { border-bottom: 1px solid var(--border-color); }
.accordion-header { background-color: var(--secondary-color); padding: 0.75rem 1rem; cursor: pointer; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.accordion-header:hover { background-color: var(--border-color); }
.accordion-content { display: none; padding: 1rem; background-color: var(--card-bg); }
.peripheral-item { cursor: pointer; padding: 0.5rem; margin: 0 -0.5rem; border-radius: 4px; } 
.peripheral-item:hover { background-color: var(--secondary-color); }
.single-peripheral-btn {
    width: 100%;
    text-align: left;
    padding: 0.75rem 1rem;
    background-color: var(--secondary-color);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-color);
}
.single-peripheral-btn:hover { background-color: var(--border-color); }
.checkbox-group { padding: 0.5rem 0; }
.checkbox-label { display: flex; align-items: center; font-weight: 500; cursor: pointer; }
.checkbox-label input { margin-right: 8px; }
.checkbox-description { margin-left: 24px; font-size: 0.9em; color: var(--light-text); }

/* Selected List */
.selected-list { list-style-type: none; padding: 0; }
.selected-item { background-color: var(--secondary-color); padding: 0.75rem 1rem; border-radius: 6px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; transition: background-color 0.2s; margin-bottom: 0.5rem; }
.selected-list > .selected-item:last-child { margin-bottom: 0; }
.selected-item:hover { background-color: var(--border-color); }
.selected-item div > div { font-size: 0.85rem; color: var(--light-text); }
.remove-btn { background-color: var(--error-color); color: white; border: none; border-radius: 4px; padding: 4px 8px; cursor: pointer; font-size: 0.8rem; }

/* Buttons */
.button-group-vertical { display: flex; flex-direction: column; gap: 0.5rem; }
button, .button-group-vertical button {
    padding: 0.75rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: background-color 0.2s;
}
button:hover, .button-group-vertical button:hover {
    background-color: var(--primary-hover);
}

/* Chip Display */
.chip-display h2 { margin-bottom: 1rem; }
.chip-container { position: relative; width: 400px; height: 400px; margin: 1rem auto; background-color: var(--secondary-color); border-radius: 10px; }
.chip-body { position: absolute; top: 10px; left: 10px; right: 10px; bottom: 10px; background-color: var(--bg-color); border-radius: 5px; }
.pin { position: absolute; width: 20px; height: 20px; border-radius: 50%; background-color: var(--pin-bg-available); border: 1px solid var(--light-text); display: flex; align-items: center; justify-content: center; font-size: 10px; color: var(--text-color); cursor: pointer; transition: all 0.2s; z-index: 5; }
.pin:hover { transform: scale(1.3); z-index: 10; border-color: var(--primary-color); }
.pin.used { background-color: var(--primary-color); color: white; border-color: var(--primary-hover); }
.pin.clock { border: 2px solid var(--warning-color); }
.pin.required { background-color: var(--error-color); color: white; border-color: var(--error-color); }
.pin.system { background-color: var(--system-color); color: white; border-color: var(--system-color); }
.pin.power-positive, .pin.power-ground, .pin.debug, .pin.crystal-hf, .pin.crystal-lf, .pin.rf-antenna { background-color: var(--pin-bg-special); color: white; border-color: var(--pin-bg-special); }

/* Legend, Info & Pin Details */
.legend { margin-top: 1rem; display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
.legend-item { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8rem; }
.legend-color { width: 12px; height: 12px; border-radius: 50%; }
.info-and-details { /* No longer a grid */ }
.pin-details { min-height: 120px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; color: var(--light-text); }
.pin-details h3 { margin-bottom: 0.5rem; }
.pin-details ul { list-style-position: inside; padding-left: 0; text-align: left; }

/* Modals */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); }
.modal-content { background-color: var(--card-bg); margin: 10% auto; padding: 0; border-radius: 8px; width: 80%; max-width: 800px; max-height: 80vh; display: flex; flex-direction: column; overflow: hidden; }
.modal-header { padding: 1rem 1.5rem; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.modal-header h2 { font-size: 1.25rem; margin: 0; padding: 0; border: none; }
.close { color: var(--light-text); font-size: 28px; font-weight: bold; cursor: pointer; }
.close:hover { color: var(--text-color); }
#importModalBody, #modalBody { padding: 1.5rem; overflow-y: auto; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border-color); display: flex; justify-content: flex-end; gap: 0.75rem; background-color: var(--secondary-color); }

/* Pin Selection Table */
.pin-selection-table { width: 100%; border-collapse: collapse; }
.pin-selection-table th, .pin-selection-table td { padding: 0.75rem; border: 1px solid var(--border-color); text-align: left; }
.pin-selection-table th { background-color: var(--secondary-color); }

/* Final Overrides */
.empty-message { color: var(--light-text); text-align: center; padding: 2rem 0; }
.peripheral-item.disabled, .single-peripheral-btn.disabled { opacity: 0.5; background-color: var(--secondary-color); cursor: not-allowed; }

/* Pin Details Table */
.pin-details-table {
    width: 100%;
    margin-top: 1rem;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}
.pin-details-table td {
    padding: 0.5rem;
    vertical-align: top;
    border-top: 1px solid var(--border-color);
}
.pin-details-table tr:first-child td {
    border-top: none;
}
.pin-details-table td:first-child {
    width: 90px;
    font-weight: 600;
    color: var(--light-text);
}