/* Local Font Definitions */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/Inter-Regular.ttf') format('truetype');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../fonts/Inter-Medium.ttf') format('truetype');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../fonts/Inter-SemiBold.ttf') format('truetype');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../fonts/Inter-Bold.ttf') format('truetype');
}

/* Original CSS */
:root {
    --primary-color: #0f172a;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --field1-bg: #eff6ff;
    /* Blue-50 */
    --field2-bg: #fff7ed;
    /* Orange-50 */
    --field3-bg: #f5f3ff;
    /* Violet-50 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
header {
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

h1 span {
    font-size: 1.25rem;
}

/* Upload Section */
.upload-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.upload-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.upload-box:hover {
    border-color: var(--accent-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.upload-box h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.upload-box input[type="file"] {
    width: 100%;
    font-size: 0.875rem;
    color: var(--text-muted);

    file-selector-button {
        margin-right: 1rem;
        padding: 0.5rem 1rem;
        border-radius: 0.375rem;
        border: 1px solid var(--border-color);
        background: var(--bg-color);
        color: var(--text-main);
        cursor: pointer;
        transition: background 0.2s;
        font-family: inherit;
        font-weight: 500;
    }

    file-selector-button:hover {
        background: #e2e8f0;
    }
}

.upload-box.uploaded {
    border-left: 4px solid var(--success-color);
}

.status {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status.success {
    color: var(--success-color);
    font-weight: 500;
}

/* Actions Bar */
.actions-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: center;
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

button {
    background-color: var(--card-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

button:hover {
    background-color: var(--bg-color);
    border-color: #cbd5e1;
}

button#solve-btn {
    background-color: var(--accent-color);
    color: white;
    border: 1px solid transparent;
    font-weight: 600;
    padding: 0.625rem 1.5rem;
}

button#solve-btn:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--bg-color) !important;
    color: var(--text-muted) !important;
    box-shadow: none !important;
}

/* Schedule Grid */
#result-container {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin: 2rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--card-bg);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

th {
    background: #f1f5f9;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 0;
    /* Remove padding to let cells fill */
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    vertical-align: top;
    height: 1px;
    /* Hack to make children fill height */
}

td:last-child {
    border-right: none;
}

tr:last-child td {
    border-bottom: none;
}

/* Time Column */
td:first-child {
    width: 80px;
    padding: 0.75rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    background: #f8fafc;
    text-align: center;
    border-right: 2px solid var(--border-color);
}

/* Field Columns */
.field-1 {
    background-color: var(--field1-bg);
}

.field-2 {
    background-color: var(--field2-bg);
}

.field-3 {
    background-color: var(--field3-bg);
}

/* Game Cards */
.game-cell {
    margin: 0.25rem;
    background: white;
    border-radius: 0.375rem;
    padding: 0.75rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-left: 3px solid var(--accent-color);
    height: calc(100% - 0.5rem);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: grab;
}

.game-cell:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 10;
    position: relative;
}

.game-cell:active {
    cursor: grabbing;
}

.game-title {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.game-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-top: auto;
}

/* Inputs inside game cell */
select {
    font-size: 0.7rem;
    padding: 2px 4px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: #f8fafc;
    color: var(--text-muted);
    max-width: 100%;
}

/* Toast & Messages */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.toast.success {
    background: var(--success-color);
}

.toast.error {
    background: var(--error-color);
}

.loading {
    text-align: center;
    padding: 4rem;
    color: var(--text-muted);
    font-size: 1.125rem;
}

/* Validation Bar */
.validation-bar {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.validation-bar.valid {
    border-left: 4px solid var(--success-color);
    background: #f0fdf4;
}

.validation-bar.changed {
    border-left: 4px solid var(--warning-color);
    background: #fffbeb;
}

.unsaved-badge {
    color: var(--warning-color);
    font-weight: 600;
    font-size: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

/* Icons */
.icon-btn {
    width: 24px;
    height: 24px;
    padding: 4px;
    border-radius: 4px;
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    color: var(--text-muted);
}

.icon-btn:hover {
    background: rgba(0, 0, 0, 0.05);
}

.icon-btn.save-change {
    color: var(--success-color);
}

.icon-btn.cancel-change {
    color: var(--error-color);
}

.unsaved-icon {
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: default;
    color: var(--warning-color);
}

/* Drag Over */
td.drag-over {
    background-color: rgba(37, 99, 235, 0.1) !important;
    outline: 2px dashed var(--accent-color);
}

.game-cell.dragging {
    opacity: 0.5;
    border: 2px dashed var(--accent-color);
}