:root {
    --primary-bg: #f0f0f0;
    --secondary-bg: #ffffff;
    --text-color: #333333;
    --primary-accent: #007bff;
    --secondary-accent: #6c757d;
    --danger-color: #dc3545;
    --highlight-bg: #e9ecef;
    --border-color: #ced4da;
    --min-tap-target: 44px;
    --font-size-normal: 16px;
    --font-size-large: 20px;
    --font-size-xlarge: 28px;
    --font-size-timer: 64px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--primary-bg);
    color: var(--text-color);
    font-size: var(--font-size-normal);
    line-height: 1.6;
    -webkit-tap-highlight-color: transparent; /* Remove tap highlight on iOS */
}

#app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px;
}

.app-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding: 10px;
    background-color: var(--secondary-bg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

#app-logo {
    height: 130px;
    width: auto;
    margin-right: 15px;
    border-radius: 4px; /* Optional: if logo benefits from rounded corners */
}


.screen {
    background-color: var(--secondary-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

h1, h2, h3 {
    color: var(--primary-accent);
    margin-top: 0;
}
h1 { font-size: var(--font-size-xlarge); margin-bottom: 0; } /* Adjusted for header */
h2 { font-size: var(--font-size-large); }
h3 { font-size: var(--font-size-normal); font-weight: bold; margin-bottom: 10px; }


textarea, input[type="text"], input[type="number"] {
    width: calc(100% - 22px); /* Full width minus padding and border */
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: var(--font-size-normal);
    min-height: var(--min-tap-target);
    box-sizing: border-box;
}

textarea#player-names-textarea {
    height: 200px;
    resize: vertical;
}

button {
    padding: 10px 15px;
    font-size: var(--font-size-normal);
    border-radius: 4px;
    border: none;
    cursor: pointer;
    min-height: var(--min-tap-target);
    min-width: var(--min-tap-target);
    transition: background-color 0.2s ease-in-out;
    margin: 5px;
}

.action-button {
    background-color: var(--primary-accent);
    color: white;
}
.action-button:hover, .action-button:focus {
    background-color: #0056b3;
}
.action-button:disabled {
    background-color: #a0c7e8;
    cursor: not-allowed;
}

.secondary-button {
    background-color: var(--secondary-accent);
    color: white;
}
.secondary-button:hover, .secondary-button:focus {
    background-color: #545b62;
}

.danger-button {
    background-color: var(--danger-color);
    color: white;
}
.danger-button:hover, .danger-button:focus {
    background-color: #b02a37;
}

.button-group {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* Team Configuration Screen */
#teams-list .team-item {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    padding: 10px;
    background-color: var(--highlight-bg);
    border-radius: 4px;
}
#teams-list .team-item .team-color-swatch {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    margin-right: 10px;
    border: 1px solid #ccc;
}
#teams-list .team-item span {
    flex-grow: 1;
    padding: 5px;
    cursor: pointer;
}
#teams-list .team-item input {
    flex-grow: 1;
    margin-bottom: 0; /* Override default input margin */
}

/* Bracket Type Screen */
.settings-group {
    margin-bottom: 20px;
}
.settings-group label {
    display: block;
    margin-bottom: 5px;
}
.bracket-type-options {
    margin-top: 20px;
}
.bracket-type-options .bracket-type-btn {
    display: block;
    width: calc(100% - 10px); /* Full width minus margin */
    margin-bottom: 10px;
    text-align: left; /* For potentially longer button text */
    padding: 12px 15px;
}

/* Tournament View Screen */
.tournament-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* Allow actions to wrap on smaller screens */
    margin-bottom: 20px;
}
.tournament-header h2 {
    margin-right: 10px; /* Space between title and buttons */
    margin-bottom: 5px; /* Ensure consistent spacing on wrap */
}
.tournament-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}


#tournament-layout {
    display: flex;
    flex-direction: column; /* Default for portrait */
    gap: 20px;
}

#bracket-area-container, #match-control-area {
    flex: 1;
    background-color: var(--secondary-bg);
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 1px 5px rgba(0,0,0,0.05);
}

#bracket-display {
    overflow-x: auto; /* Allow horizontal scrolling for large brackets */
    padding-bottom: 10px; /* Space for scrollbar */
}
.bracket-display-container h4 { /* Pool titles etc. */
    margin-top: 15px;
    margin-bottom: 5px;
    color: var(--primary-accent);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}


/* Active Match Area */
#active-match-info {
    padding: 10px;
    border: 1px dashed var(--border-color);
    border-radius: 4px;
    text-align: center;
}
#countdown-timer-display {
    font-size: var(--font-size-timer);
    font-weight: bold;
    color: var(--primary-accent);
    text-align: center;
    margin: 20px 0;
}
#winner-selection-area {
    text-align: center;
}
#winner-selection-area .winner-button {
    background-color: #28a745;
    color: white;
    width: 45%;
    margin: 5px 2%;
    padding: 15px;
    font-size: var(--font-size-large);
}
#winner-selection-area .winner-button:hover {
    background-color: #1e7e34;
}

/* Match Schedule List */
.match-item {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 10px;
    background-color: white;
}
.match-item.next-match {
    background-color: #fff3cd; /* Bootstrap's warning yellow */
    border-left: 5px solid #ffc107; /* Bootstrap's warning color */
}
.match-item.active-match {
    background-color: #d1ecf1; /* Bootstrap's info light blue */
    border-left: 5px solid #17a2b8; /* Bootstrap's info color */
}
.match-item.completed-match {
    background-color: #e2e3e5; /* Bootstrap's secondary light gray */
    opacity: 0.7;
}
.match-item-header {
    font-weight: bold;
    margin-bottom: 5px;
}
.match-item-teams {
    font-size: var(--font-size-normal);
}
.match-item-details {
    font-size: 0.9em;
    color: var(--secondary-accent);
}
.match-item-actions button {
    margin-top: 5px;
    margin-right: 5px;
}
.match-item-time-input {
    width: 60px !important; /* Override general input width */
    min-height: 30px !important; /* Smaller for inline */
    padding: 5px !important;
    margin-right: 5px;
    display: inline-block;
    vertical-align: middle;
}

/* Bracket specific styling */
.bracket-tree {
    display: flex;
    overflow-x: auto; /* Horizontal scroll for wide brackets */
    padding: 10px 0;
}
.bracket-round {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    margin-right: 40px; /* Space for connectors */
    min-width: 150px; /* Ensure round has some width */
}
.bracket-match {
    padding: 8px;
    margin: 10px 0;
    background-color: var(--highlight-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    font-size: 0.9em;
    min-height: calc(var(--min-tap-target) - 16px); /* Content height considering padding */
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.bracket-match .team {
    display: block;
    padding: 2px 5px;
    border-radius: 3px;
    margin: 1px 0;
}
.bracket-match .team.winner {
    font-weight: bold;
    /* color: var(--primary-accent); Let team color define winner emphasis */
}
.bracket-match .placeholder {
    font-style: italic;
    color: #888;
}

.bracket-match::after {
    content: '';
    position: absolute;
    right: -20px;
    top: 50%;
    width: 20px;
    height: 1px;
    background-color: var(--border-color);
}
.bracket-round:last-child .bracket-match::after {
    display: none;
}
.bracket-match .team-name-color-box {
    width: 10px;
    height: 10px;
    display: inline-block;
    margin-right: 5px;
    border: 1px solid rgba(0,0,0,0.2);
}


/* Swiss & Pool Standings Table */
.standings-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 0.9em;
}
.standings-table th, .standings-table td {
    border: 1px solid var(--border-color);
    padding: 6px 8px;
    text-align: left;
}
.standings-table th {
    background-color: var(--highlight-bg);
}
.standings-table td:first-child, .standings-table th:first-child { text-align: center; } /* Rank */
.standings-table .team-name-cell {
    display: flex;
    align-items: center;
}
.standings-table .team-color-swatch-table {
    width: 15px;
    height: 15px;
    border-radius: 3px;
    margin-right: 8px;
    border: 1px solid #ccc;
    flex-shrink: 0;
}


#tournament-winner-display {
    text-align: center;
    padding: 20px;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    border-radius: 8px;
}
#tournament-winner-display h2 {
    color: #155724;
}
#final-standings-display ul {
    list-style: none;
    padding: 0;
    text-align: left;
    display: inline-block; /* Center the list block */
}
#final-standings-display li {
    margin-bottom: 5px;
    font-size: var(--font-size-normal);
}
#final-standings-display .team-color-swatch-final {
    width: 1em;
    height: 1em;
    display: inline-block;
    margin-right: 0.5em;
    border: 1px solid rgba(0,0,0,0.2);
    vertical-align: middle;
}


/* Modal Styles */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5); /* Dim background */
    display: flex; /* Used with display: none initially */
    align-items: center;
    justify-content: center;
}
.modal-content {
    background-color: var(--secondary-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    width: 90%;
    max-width: 500px;
    position: relative;
}
.close-button {
    color: #aaa;
    float: right; /* Old school, but works for simple X */
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}
.close-button:hover, .close-button:focus {
    color: var(--text-color);
    text-decoration: none;
}
#qr-code-display img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
}


/* iPad and Landscape Optimizations */
@media (min-width: 768px) { /* Typical tablet breakpoint */
    body {
        /* font-size: var(--font-size-large); Larger base font may make things too big */
    }
    /* h1 { font-size: calc(var(--font-size-xlarge) + 4px); } */
    /* h2 { font-size: calc(var(--font-size-large) + 4px); } */

    /* textarea, input[type="text"], input[type="number"], button {
        font-size: var(--font-size-large);
    } */
    .bracket-match { font-size: var(--font-size-normal); }


    #app-container {
        padding: 20px;
    }
    
    @media (orientation: landscape) and (min-width: 768px), (min-width: 1024px) {
        #tournament-layout {
            flex-direction: row;
        }
        #bracket-area-container {
            flex: 1.5; 
        }
        #match-control-area {
            flex: 1;
        }
        .pool-display-container { /* For new format */
            display: flex;
            gap: 20px;
        }
        .pool-section {
            flex: 1;
        }
    }
}

.pool-display-container {
    margin-bottom: 20px;
}
.pool-section {
    margin-bottom: 20px;
}
.pool-section h5 { /* Pool match list title */
    margin-top: 10px;
    font-size: calc(var(--font-size-normal) * 0.9);
    color: var(--secondary-accent);
}
.pool-match-list .match-item {
    font-size: 0.85em;
    padding: 8px;
}
.pool-match-list .match-item-header {
    font-size: 0.95em;
}