:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg: #f8fafc;
    --text: #1e293b;
    --chord-color: #dc2626;
    --line-color: #94a3b8;
    --border-color: #cbd5e1;
    --card-bg: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    padding: 2rem;
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.5;
}

h1,
h2,
h3 {
    margin-top: 0;
}

/* Header & Nav */
header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.brand h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.brand p {
    color: #64748b;
    font-size: 0.9rem;
    margin: 0;
}

nav button {
    margin-left: 0.5rem;
}

/* Views Logic */
.view-section {
    display: none;
}

.view-section.active {
    display: block;
}

/* Buttons */
button {
    padding: 0.6rem 1.2rem;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--primary-hover);
}

button.secondary {
    background-color: #64748b;
}

button.secondary:hover {
    background-color: #475569;
}

button.danger {
    background-color: #ef4444;
}

button.danger:hover {
    background-color: #dc2626;
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Input Fields */
input[type="text"],
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    margin-bottom: 1rem;
}

textarea.lyrics-input {
    height: 300px;
    font-family: monospace;
}

/* Song List */
.song-list-container {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    overflow: hidden;
}

.song-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.song-item:last-child {
    border-bottom: none;
}

.song-item:hover {
    background-color: #f1f5f9;
}

.song-title {
    font-weight: 600;
    font-size: 1.1rem;
}

/* Editor / Viewer Container */
.lyrics-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

/* Line & Chord Rendering (Ported from prototype) */
.lyric-line {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    /* margin-bottom: 1.5rem; */

    /* Ensure space for chords that are absolutely positioned above */
    margin-top: 1rem;
    /* min-height: 3.5rem; */
}

.char-wrapper {
    display: inline-flex;
    flex-direction: column;
    align-items: stretch;
    min-width: 1ch;
    transition: background 0.2s;
    border-radius: 4px;
    margin-right: 0px;
    position: relative;
}

.editor-mode .char-wrapper {
    cursor: pointer;
}

.editor-mode .char-wrapper:hover {
    background-color: #e2e8f0;
}

.letter {
    font-size: 1.2rem;
    line-height: 1.5;
    font-family: monospace;
    white-space: pre;
    text-align: left;
    display: flex;
}

.letter::after {
    content: '';
    flex-grow: 1;
    border-bottom: 2px solid var(--line-color);
    margin-bottom: 5px;
    margin-left: 1px;
    min-width: 0;
}

.char-wrapper.is-space .letter::after {
    display: none;
}

.chord {
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--chord-color);
    height: 1.2em;
    min-width: 100%;
    text-align: center;
    white-space: nowrap;
    padding: 0 1px;
    margin-bottom: 2px;

    /* Default: floating above, not affecting width */
    position: absolute;
    bottom: 100%;
    left: 0;
    text-align: left;
    /* Align to start of letter */
}

/* Auto-assigned chord style */
.chord.auto {
    color: #16a34a;
}

.chorus-line {
    border-left: 2px solid #e11d48;
    /* Red/Pink accent */
    padding-left: 1.5rem;
    margin-left: 0.5rem;
    background-color: rgba(225, 29, 72, 0.05);
    /* Slight tint for chorus */
}

/* When collision detected, put back in flow to push neighbors */
.char-wrapper.collision-detected .chord {
    position: static;
    text-align: center;
    /* Or left? Center aligns with letter better if single char */
}

/* Also ensure letter::after is only visible if we need spacing?
   Actually, the user wants letter::after to be the mechanism.
   If we are in flow (collision), the wrapper expands.
   The letter element fills the width?
   We need letter::after to fill the rest if the chord is wider than the letter.
*/

/* Hide ::after by default (when no collision/floating) */
.letter::after {
    content: '';
    flex-grow: 1;
    border-bottom: 2px solid var(--line-color);
    margin-bottom: 5px;
    margin-left: 1px;
    min-width: 0;
    display: none;
    /* Hidden by default per user request logic */
}

/* Show ::after when collision detected */
.char-wrapper.collision-detected .letter::after {
    display: block;
    /* or flex item default */
}

.chord:empty::after {
    content: "\00a0";
    visibility: hidden;
}

.controls {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.chorus-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    color: var(--text);
}

/* Print Styles */
@media print {
    body {
        padding: 0;
        background: white;
        max-width: none;
    }

    header,
    .controls,
    .view-section:not(.active) {
        display: none;
    }

    .lyrics-container {
        box-shadow: none;
        padding: 0;
    }
}

/* Chord Input Popup */
.chord-input-popup {
    position: absolute;
    z-index: 1000;
    background: white;
    border: 1px solid var(--primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    padding: 0.25rem;
    display: flex;
    gap: 0.25rem;
    transform: translate(-50%, -100%);
    /* Center above the target */
    margin-top: -5px;
}

.chord-input-popup input {
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 0.25rem 0.5rem;
    font-size: 0.9rem;
    font-weight: bold;
    width: 80px;
    margin: 0;
    /* Override explicit input margin */
    outline: none;
    color: var(--chord-color);
}

.chord-input-popup input:focus {
    border-color: var(--primary);
}

.chord-input-popup button {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    margin: 0;
}

/* Drag and Drop Styles */
.chord[draggable="true"] {
    cursor: grab;
}

.chord[draggable="true"]:active {
    cursor: grabbing;
}

.chord.dragging {
    opacity: 0.5;
}

.char-wrapper.drag-over {
    background-color: #bfdbfe !important;
    /* light blue highlight */
    border-radius: 4px;
}

/* Language Selector */
.language-selector {
    position: relative;
    margin-top: 1rem;
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #f1f5f9;
    padding: 0.5rem;
    border-radius: 6px;
    width: fit-content;
}

.lang-current {
    cursor: pointer;
    font-weight: bold;
    color: var(--text);
    padding: 2px 6px;
    border-radius: 4px;
    background: #e2e8f0;
    user-select: none;
}

.lang-current:hover {
    background: #cbd5e1;
}

.lang-menu {
    position: absolute;
    top: 100%;
    left: 80px;
    /* Offset from label */
    background: white;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    border-radius: 6px;
    margin-top: 4px;
    z-index: 1001;
    min-width: 120px;
    max-height: 200px;
    overflow-y: auto;
}

.lang-menu div {
    padding: 0.5rem 1rem;
    cursor: pointer;
}

.lang-menu div:hover {
    background: #f1f5f9;
}