:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.3);
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --font-family: 'Outfit', sans-serif;
    --transition-speed: 0.3s;
}

* {
    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-primary);
    height: 100vh;
    overflow: hidden;
}

#app {
    height: 100%;
    width: 100%;
    position: relative;
}

/* Views */
.view {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color);
    transition: transform var(--transition-speed) ease, opacity var(--transition-speed) ease;
    opacity: 0;
    pointer-events: none;
    transform: translateX(20px);
}

.view.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
    z-index: 10;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    z-index: 20;
}

.header h1, .header h2 {
    font-weight: 600;
    font-size: 1.5rem;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.icon-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* List View */
.counters-list {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.counter-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.counter-card:active {
    transform: scale(0.98);
}

.counter-info h3 {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.counter-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.counter-actions {
    display: flex;
    gap: 10px;
}

.fav-btn {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.fav-btn.active {
    color: #eab308; /* Yellow */
    fill: #eab308;
}

/* Counter View */
.counter-controls {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    padding-bottom: 60px;
}

.count-display {
    font-size: 6rem;
    font-weight: 700;
    text-shadow: 0 0 20px var(--accent-glow);
    color: var(--accent-color);
}

.control-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: none;
    background-color: var(--card-bg);
    color: var(--text-primary);
    font-size: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.2s;
}

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

.control-btn.plus {
    background: linear-gradient(135deg, var(--accent-color), #0ea5e9);
    box-shadow: 0 0 20px var(--accent-glow);
}

.control-btn.minus {
    background-color: var(--card-bg);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(5px);
}

.modal.hidden {
    display: none;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-content h3 {
    margin-bottom: 20px;
}

.modal-content input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 1rem;
}

.modal-actions {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 15px;
}

.modal-actions button {
    flex: 1;
    padding: 10px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
}

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

.secondary-btn {
    background-color: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    color: var(--text-primary);
}

.danger-btn {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    margin-top: 10px;
    text-decoration: underline;
}