:root {
    --bg-color: #121212;
    --panel-bg: #1e1e1e;
    --text-main: #ffffff;
    --text-dim: #aaaaaa;
    --accent: #ff4757;
    --accent-hover: #ff6b81;
    --match-bg: #2f3542;
    --line-color: #57606f;
    --winner-bg: #2ed573;
    --winner-text: #121212;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    overflow: hidden;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    color: var(--accent);
    margin-bottom: 10px;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    overflow: hidden;
}

.panel {
    background-color: var(--panel-bg);
    padding: 25px;
    border-radius: 8px;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--text-dim);
}

#tournament-name {
    width: 100%;
    padding: 10px;
    background-color: #000000;
    border: 1px solid #333;
    color: white;
    border-radius: 4px;
}

textarea {
    width: 100%;
    height: 150px;
    background-color: #000000;
    border: 1px solid #333;
    color: white;
    padding: 10px;
    border-radius: 4px;
    resize: vertical;
}

select {
    width: 100%;
    padding: 10px;
    background-color: #000000;
    border: 1px solid #333;
    color: white;
    border-radius: 4px;
}

button {
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1rem;
    transition: 0.2s;
}

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

button.secondary {
    background-color: #57606f;
    margin-right: 10px;
}

.hidden {
    display: none;
}

/* Bracket Layout */
#bracket-view {
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.toolbar {
    text-align: center;
    margin-bottom: 20px;
}

#tournament-title-display {
    text-align: center;
    margin: 0 0 20px 0;
    padding-top: 10px;
    color: var(--accent);
    font-size: 2rem;
    flex-shrink: 0;
}

.bracket-container {
    display: flex;
    padding: 20px;
    min-width: max-content;
    transform-origin: top left;
    transition: transform 0.3s ease;
}

.round {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    margin-right: 30px;
}

.match {
    background-color: var(--match-bg);
    width: 160px;
    border-radius: 4px;
    padding: 5px;
    margin: 10px 0;
    position: relative;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.match[draggable="true"] {
    cursor: grab;
}

.match {
    user-select: none;
    -webkit-user-select: none;
}

.match.dragging {
    opacity: 0.5;
}

.match.drag-over {
    outline: 2px dashed var(--accent);
    background-color: rgba(255, 71, 87, 0.1);
}

/* Connector Lines */
.round:not(:last-child) .match::after {
    content: '';
    position: absolute;
    right: -30px;
    top: 50%;
    width: 30px;
    height: 2px;
    background-color: var(--line-color);
    z-index: -1;
}

.participant {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 8px;
    margin: 2px 0;
    background-color: rgba(0,0,0,0.2);
    border-radius: 3px;
    cursor: pointer;
    transition: background 0.2s;
    user-select: none;
    -webkit-user-select: none;
}

.participant:hover {
    background-color: rgba(255,255,255,0.05);
}

.participant.winner {
    background-color: var(--winner-bg);
    color: var(--winner-text);
    font-weight: bold;
}

.participant.loser {
    opacity: 0.5;
}

.name {
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.9rem;
}

.score {
    width: 30px;
    background: transparent;
    border: none;
    border-left: 1px solid rgba(255,255,255,0.1);
    color: inherit;
    text-align: center;
    margin-left: 5px;
}

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

.participant.dragging {
    opacity: 0.5;
}

.drop-target {
    cursor: default;
    border: 1px dashed #444;
}

.drop-target.drag-over {
    background-color: rgba(255, 71, 87, 0.2);
    border-color: var(--accent);
    border-style: solid;
}

.participant.drag-over {
    background-color: rgba(255, 71, 87, 0.2);
    outline: 2px dashed var(--accent);
}

.match-label {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 0.75rem;
    text-align: center;
    margin-bottom: 4px;
    padding: 2px;
}

.match-label:focus {
    color: var(--text-main);
    outline: none;
    background-color: rgba(255,255,255,0.05);
    border-radius: 2px;
}

/* Workspace & Sidebar */
.workspace {
    display: flex;
    width: 100%;
    gap: 20px;
    align-items: flex-start;
    flex: 1;
    overflow: hidden;
}

.bracket-scroll-wrapper {
    flex-grow: 1;
    overflow: auto;
    padding-bottom: 20px;
    height: 100%;
}

#team-sidebar {
    width: 200px;
    min-width: 200px;
    background-color: var(--panel-bg);
    padding: 15px;
    border-radius: 8px;
    max-height: 80vh;
    overflow-y: auto;
    position: sticky;
    top: 20px;
}

#team-sidebar h3 {
    color: var(--text-dim);
    font-size: 1rem;
    margin-bottom: 10px;
    border-bottom: 1px solid #333;
    padding-bottom: 5px;
}

.sidebar-item {
    background-color: var(--match-bg);
    padding: 8px;
    margin-bottom: 5px;
    border-radius: 4px;
    cursor: grab;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    user-select: none;
    -webkit-user-select: none;
}

.sidebar-item:hover {
    background-color: #3e4452;
}

.sidebar-item:active {
    cursor: grabbing;
}

.bracket-section {
    margin-bottom: 40px;
    border-bottom: 1px solid #333;
    padding-bottom: 20px;
}