:root {
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --danger-color: #ef4444;
    --success-color: #10b981;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Glassmorphism Utilities */
.glass-header, .glass-panel, .column {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--success-color);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.app-selector-container {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Form Elements */
.glass-select, .glass-input {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s;
}

.glass-select:focus, .glass-input:focus {
    border-color: var(--accent-color);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.2rem;
}

.form-group label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

textarea.glass-input {
    resize: vertical;
    min-height: 80px;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

/* Board Layout */
.board {
    display: flex;
    flex: 1;
    overflow-x: auto;
    padding: 2rem;
    gap: 1.5rem;
    align-items: flex-start;
}

.column {
    min-width: 320px;
    width: 320px;
    border-radius: 12px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: calc(100vh - 120px);
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--glass-border);
}

.column-header h2 {
    font-size: 1.1rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.count {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.highlight-header h2 { color: var(--accent-color); }
.highlight-count { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.success-header h2 { color: var(--success-color); }

/* Progress Bar (Closed Beta) */
.progress-bar-container {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.4s ease;
}

/* Tester Cards */
.tester-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    overflow-y: auto;
    flex: 1;
    padding-right: 0.25rem;
}

/* Scrollbar for lists */
.tester-list::-webkit-scrollbar {
    width: 6px;
}
.tester-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.tester-card {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 1rem;
    position: relative;
    transition: transform 0.2s;
    animation: slideIn 0.3s ease forwards;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tester-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
}

.tester-name {
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.tester-email {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.tester-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.5rem;
}

.tester-notes {
    font-size: 0.85rem;
    color: #cbd5e1;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--glass-border);
    padding-top: 0.5rem;
    margin-top: 0.5rem;
}

.move-select {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    font-size: 0.8rem;
    outline: none;
    cursor: pointer;
}

.move-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-delete-tester {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.btn-delete-tester:hover {
    color: var(--danger-color);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.2s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    width: 100%;
    max-width: 450px;
    border-radius: 12px;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform 0.2s;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 500;
}

.close-modal {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
}

.close-modal:hover { color: var(--text-primary); }

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem;
}

.empty-state h2 {
    color: var(--text-primary);
    margin: 1rem 0 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .app-selector-container {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .board {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
    }

    .column {
        width: 100%;
        min-width: unset;
        max-height: none;
    }
}