:root {
    --primary-color: #7c3aed; /* Purple for Start button */
    --login-btn-color: #1a73e8; /* Blue for login */
    --sidebar-width: 260px;
    --bg-color: #f8f9fa;
    --text-color: #333;
    --border-color: #e5e7eb;
    --terminal-bg: #0d1117;
    --terminal-text: #2ea043;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    height: 100vh;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-card {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #111;
}

.form-group {
    margin-bottom: 1.25rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
}

.form-control {
    display: block;
    width: 100%;
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: #1f2937;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: var(--login-btn-color);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.25);
}

.btn-primary {
    display: block;
    width: 100%;
    padding: 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
    color: #fff;
    background-color: var(--login-btn-color);
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: background-color 0.15s ease-in-out;
}

.btn-primary:hover {
    background-color: #1557b0;
}

.error-msg {
    color: #dc2626;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

/* Dashboard Layout */
.dashboard-container {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background-color: #fff;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100%;
    left: 0;
    top: 0;
    z-index: 10;
}

.sidebar-header {
    padding: 1.5rem;
    font-size: 1.25rem;
    font-weight: 800;
    color: #7c3aed; /* Brand color */
    border-bottom: 1px solid transparent;
}

.nav-menu {
    list-style: none;
    padding: 1rem 0;
    flex-grow: 1;
}

.nav-item {
    margin-bottom: 0.25rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    color: #4b5563;
    font-size: 0.875rem;
    transition: background 0.1s;
    font-weight: 500;
}

.nav-link:hover, .nav-link.active {
    background-color: #f3f0ff;
    color: #7c3aed;
    border-right: 3px solid #7c3aed;
}

.nav-icon {
    margin-right: 0.75rem;
    width: 1.25em;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

.quota-card {
    background-color: #e0f2fe;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    font-size: 0.75rem;
}

.quota-title {
    font-weight: 700;
    color: #0369a1;
    margin-bottom: 0.5rem;
}

.quota-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
    color: #0c4a6e;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex-grow: 1;
    padding: 2rem;
    overflow-y: auto;
    width: calc(100% - var(--sidebar-width));
}

.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    margin-bottom: 1rem;
    align-items: center;
}

.card-title {
    font-size: 1rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-panel {
    display: flex;
    gap: 2rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

.control-group {
    flex: 1;
}

.control-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
}

.file-input-wrapper {
    display: flex;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    overflow: hidden;
}

.file-input-btn {
    background-color: #f3f4f6;
    padding: 0.5rem 1rem;
    border-right: 1px solid #d1d5db;
    font-size: 0.875rem;
    color: #374151;
    cursor: pointer;
}

.file-input-text {
    padding: 0.5rem 1rem;
    flex-grow: 1;
    font-size: 0.875rem;
    color: #6b7280;
    background: white;
}

.radio-group {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    height: 38px; /* Match input height */
}

.radio-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #374151;
    cursor: pointer;
}

.btn-start {
    background-color: var(--primary-color);
    color: white;
    padding: 0.625rem 2rem;
    border: none;
    border-radius: 0.375rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-box {
    background-color: var(--terminal-bg);
    color: var(--terminal-text);
    font-family: 'Courier New', Courier, monospace;
    padding: 1.5rem;
    border-radius: 6px;
    min-height: 200px;
    font-size: 0.875rem;
}

.status-valid {
    color: #2ea043;
}

.status-waiting {
    color: #2ea043;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Config Grid */
.config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; /* Two columns */
    gap: 1.5rem;
}

.config-item {
    display: flex;
    flex-direction: column;
}

.config-item.full-width {
    grid-column: span 2;
}

.config-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
}

.config-input, .config-select {
    padding: 0.625rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    color: #1f2937;
    background-color: #fff;
    width: 100%;
}

.config-input:focus, .config-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(124, 58, 237, 0.1);
}

.config-helper {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.25rem;
}