:root {
    --bg: #050505;
    --card: rgba(20, 20, 20, 0.85);
    --accent: #ef5350;
    --accent-glow: rgba(239, 83, 80, 0.4);
    --text-main: #fcfcfc;
    --text-dim: #999;
    --border: rgba(255, 255, 255, 0.08);
    --transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text-main);
    min-height: 100vh;
    width: 100vw;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    width: 100vw;
    height: 100vw;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.12;
}

.blob-1 { top: -30%; left: -30%; background: var(--accent); }
.blob-2 { bottom: -30%; right: -30%; background: #444; }

header {
    padding: 2.5rem 0 1.5rem;
    display: flex;
    justify-content: center;
}

.logo {
    width: 100px;
    filter: drop-shadow(0 0 20px rgba(239, 83, 80, 0.2));
}

main {
    flex: 1;
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

/* Nav Bar with Indicator */
.nav-bar {
    display: flex;
    width: calc(100% - 2.4rem);
    margin: 0 1.2rem 2.5rem;
    background: rgba(255, 255, 255, 0.03);
    padding: 4px;
    border-radius: 100px;
    border: 1px solid var(--border);
    backdrop-filter: blur(15px);
    position: relative;
}

.nav-item {
    flex: 1;
    padding: 12px 0;
    border: none;
    background: transparent;
    color: var(--text-dim);
    font-weight: 800;
    font-size: 0.7rem;
    letter-spacing: 1px;
    cursor: pointer;
    z-index: 2;
    transition: var(--transition);
}

.nav-item.active {
    color: var(--text-main);
}

.nav-indicator {
    position: absolute;
    height: calc(100% - 8px);
    width: calc(33.333% - 4px);
    background: rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    top: 4px;
    left: 4px;
    transition: var(--transition);
    z-index: 1;
}

/* Sliding Viewport System */
.view-viewport {
    width: 100%;
    overflow: hidden;
    flex: 1;
}

.view-slider {
    display: flex;
    width: 300%; /* 3 slides */
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.view-slide {
    width: 33.333%;
    padding: 0 1.2rem;
    flex-shrink: 0;
}

/* Glass Card */
.glass-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 30px;
    padding: 1.8rem;
    backdrop-filter: blur(30px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

/* Form Styling */
label {
    display: block;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 1.5px;
    margin-bottom: 1rem;
    text-align: center;
}

.form-group {
    margin-bottom: 2.5rem;
}

.button-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
}

.button-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
}

.chip-btn {
    padding: 1.1rem;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.button-wrap .chip-btn {
    width: auto;
    padding: 0.6rem 1.1rem;
    font-size: 0.8rem;
}

.chip-btn.active {
    background: rgba(239, 83, 80, 0.12);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}

.toggle-group {
    display: flex;
    background: rgba(255, 255, 255, 0.04);
    padding: 5px;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.toggle-btn {
    flex: 1;
    padding: 1rem;
    border-radius: 12px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    font-weight: 800;
}

.toggle-btn.active[data-type="Ingreso"] { background: rgba(46, 204, 113, 0.15); color: #2ecc71; }
.toggle-btn.active[data-type="Egreso"] { background: rgba(239, 83, 80, 0.15); color: var(--accent); }

/* Centered Counter */
.counter-control {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 6px;
    max-width: 260px;
    margin: 0 auto;
}

.counter-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    font-size: 1.4rem;
}

.counter-control input {
    width: 100px;
    background: transparent;
    border: none;
    text-align: center;
    color: var(--text-main);
    font-size: 2.2rem;
    font-weight: 800;
    outline: none;
}

.main-submit-btn {
    width: 100%;
    padding: 1.4rem;
    border-radius: 20px;
    border: none;
    background: var(--accent);
    color: white;
    font-weight: 800;
    font-size: 1rem;
    box-shadow: 0 10px 30px rgba(239, 83, 80, 0.3);
}

.item-row {
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-val { font-size: 1.2rem; font-weight: 800; }

.resp-header {
    margin-top: 1.8rem;
    font-size: 0.65rem;
    color: var(--accent);
    font-weight: 800;
    letter-spacing: 2.5px;
    text-align: center;
    width: 100%;
    text-transform: uppercase;
}

.sub-header {
    width: 100%;
    text-align: center;
    font-size: 0.6rem;
    font-weight: 900;
    color: var(--text-dim);
    letter-spacing: 1px;
    margin: 1.5rem 0 0.8rem;
    padding: 6px 0;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    text-transform: uppercase;
    border-left: 2px solid var(--accent);
    border-right: 2px solid var(--accent);
}

footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.65rem;
    color: var(--text-dim);
    opacity: 0.5;
}