:root {
    --primary-color: #4F46E5; /* Indigo 600 */
    --primary-hover: #4338CA; /* Indigo 700 */
    --bg-color: #F3F4F6; /* Gray 100 */
    --card-bg: #FFFFFF;
    --text-main: #111827; /* Gray 900 */
    --text-secondary: #6B7280; /* Gray 500 */
    --danger-color: #EF4444; /* Red 500 */
    --border-color: #E5E7EB; /* Gray 200 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-md: 12px;
    --radius-lg: 16px;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden; /* App-like feel */
}

.app-container {
    max-width: 600px; /* Mobile-ish width on desktop */
    margin: 0 auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    background-color: var(--bg-color);
    box-shadow: 0 0 40px rgba(0,0,0,0.05); /* Subtle lift on desktop */
}

/* Header */
.app-header {
    padding: 20px 24px;
    background: var(--bg-color); /* Transparent/blend with bg */
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.app-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
}

.global-total {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    background: #E0E7FF; /* Indigo 100 */
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
}

/* Counter List */
.counter-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px 20px 100px 20px; /* Bottom padding for FAB */
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.empty-state {
    text-align: center;
    margin-top: 100px;
    color: var(--text-secondary);
    font-size: 16px;
}

/* Counter Card */
.counter-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    border: 1px solid transparent;
}

.counter-card:active {
    transform: scale(0.995);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.counter-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    margin-right: 10px;
    word-break: break-word;
}

.menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--text-secondary);
    border-radius: 50%;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-btn:hover {
    background-color: var(--bg-color);
    color: var(--text-main);
}

.card-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.count-display {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-main);
    font-variant-numeric: tabular-nums;
    transition: color 0.2s;
}

.count-controls {
    display: flex;
    gap: 16px;
    align-items: center;
}

.control-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-main);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    box-shadow: var(--shadow-sm);
}

.control-btn:active {
    transform: scale(0.92);
    background-color: var(--bg-color);
}

.control-btn.increment {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.control-btn.increment:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

/* FAB */
.fab {
    position: absolute;
    bottom: 32px;
    right: 24px;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: none;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background-color 0.2s;
    z-index: 50;
}

.fab:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05);
}

.fab:active {
    transform: scale(0.95);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--card-bg);
    width: 90%;
    max-width: 400px;
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform 0.2s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal h2 {
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: 600;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    font-family: var(--font-family);
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

.btn-cancel, .btn-primary {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background 0.2s;
}

.btn-cancel {
    background: transparent;
    color: var(--text-secondary);
}

.btn-cancel:hover {
    background: var(--bg-color);
    color: var(--text-main);
}

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

.btn-primary:hover {
    background: var(--primary-hover);
}

/* Context Menu */
.context-menu {
    position: absolute;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    padding: 4px;
    min-width: 150px;
    z-index: 60;
    border: 1px solid var(--border-color);
    animation: fadeIn 0.1s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.menu-item {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 10px 12px;
    border: none;
    background: none;
    text-align: left;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-main);
    border-radius: 4px;
    gap: 8px;
}

.menu-item:hover {
    background-color: var(--bg-color);
}

.menu-item.text-danger {
    color: var(--danger-color);
}

.menu-item.text-danger:hover {
    background-color: #FEF2F2; /* Red 50 */
}

/* Scrollbar styling */
.counter-list::-webkit-scrollbar {
    width: 6px;
}
.counter-list::-webkit-scrollbar-track {
    background: transparent;
}
.counter-list::-webkit-scrollbar-thumb {
    background-color: rgba(0,0,0,0.1);
    border-radius: 3px;
}