:root {
    --bg: #1a1a2e;
    --card: #16213e;
    --accent: #e94560;
    --accent-hover: #ff6b81;
    --accent-glow: rgba(233, 69, 96, 0.4);
    --text: #f1f1f1;
    --text-muted: #a0a0a0;
    --success: #00d9ff;
    --border: #0f3460;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem 1rem;
}

.container {
    width: 100%;
    max-width: 600px;
}

h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, var(--accent), var(--success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.input-section {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

#todoInput {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--card);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

#todoInput:focus {
    border-color: var(--accent);
}

.btn-primary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

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

.btn-primary:active {
    transform: scale(0.95);
}

.stats {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    padding: 0 0.5rem;
}

.todo-list {
    list-style: none;
}

.todo-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideIn 0.3s ease;
    cursor: grab;
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.todo-item:active {
    cursor: grabbing;
}

.todo-item.dragging {
    opacity: 0.5;
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.todo-item.drag-over {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent);
    transform: translateY(2px);
}

.todo-item.active {
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}

.drag-handle {
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: grab;
    user-select: none;
    padding: 0.25rem;
    line-height: 1;
}

.drag-handle:active {
    cursor: grabbing;
}

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

.todo-text {
    flex: 1;
    font-size: 1.1rem;
}

.counter-section {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
}

.counter-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.1s;
}

.counter-btn.minus {
    background: #c0392b;
    color: white;
}

.counter-btn.minus:hover {
    background: #e74c3c;
}

.counter-btn.plus {
    background: #27ae60;
    color: white;
}

.counter-btn.plus:hover {
    background: #2ecc71;
}

.counter-btn:active {
    transform: scale(0.9);
}

.counter-value {
    font-size: 1.3rem;
    font-weight: bold;
    min-width: 40px;
    text-align: center;
    color: var(--success);
}

.active-toggle {
    background: transparent;
    border: 2px solid var(--border);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: all 0.2s;
    flex-shrink: 0;
}

.active-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.active-toggle.is-active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.delete-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.25rem;
    transition: color 0.2s;
}

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

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 3rem 1rem;
    font-style: italic;
}