:root {
  --bg-color: #0f172a;
  --panel-bg: rgba(30, 41, 59, 0.7);
  --panel-border: rgba(148, 163, 184, 0.1);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-primary: #38bdf8;
  --accent-secondary: #818cf8;
  --success: #34d399;
  --expense: #f87171;
  --font-main: 'Outfit', sans-serif;
  --font-mono: 'Roboto Mono', monospace;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
}


.background-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
    opacity: 0.6;
}

.app-wrapper {
    width: 100%;
    max-width: 1000px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}


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

.brand h1 {
    font-weight: 700;
    letter-spacing: 2px;
    background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.5rem;
}

.currency-select {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    font-family: var(--font-main);
    cursor: pointer;
}


.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .main-grid {
        grid-template-columns: 1fr 1fr;
    }
    .hero-panel {
        grid-column: 1 / -1;
    }
}


.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 20px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.panel h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 0.5rem;
}


.hero-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
}

@media (min-width: 768px) {
    .hero-panel {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        padding: 30px;
    }
}

.hero-content h4 {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-mono);
    margin: 5px 0 10px;
}

.daily-stat {
    font-size: 0.9rem;
    background: rgba(0,0,0,0.2);
    padding: 6px 12px;
    border-radius: 20px;
    display: inline-block;
}

.daily-stat .money {
    font-family: var(--font-mono);
    font-weight: 600;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(0,0,0,0.2);
    padding: 15px 25px;
    border-radius: 10px;
}

.stat-box {
    text-align: center;
}

.stat-box h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.stat-box .money {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1.1rem;
}

.money.plus { color: var(--success); }
.money.minus { color: var(--expense); }

.divider {
    width: 1px;
    height: 30px;
    background: var(--panel-border);
}


.savings-content {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.savings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.savings-input-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.savings-input-group input {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    width: 80px;
    padding: 4px 8px;
    border-radius: 4px;
    text-align: right;
}

.progress-track {
    width: 100%;
    height: 12px;
    background: rgba(0,0,0,0.3);
    border-radius: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    width: 0%;
    transition: width 0.5s ease;
}


.chart-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pie-chart {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: conic-gradient(rgba(255,255,255,0.05) 0% 100%);
    position: relative;
    margin-bottom: 20px;
}

.pie-chart::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 100px; height: 100px;
    background: var(--panel-bg);
    border-radius: 50%;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.legend-item {
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-secondary);
}

.legend-color {
    width: 8px; height: 8px;
    border-radius: 50%;
}


.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 0.5rem;
}

.panel-header h3 {
    margin: 0;
    border: none;
    padding: 0;
}

.clear-btn {
    background: rgba(248, 113, 113, 0.1);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: var(--expense);
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.clear-btn:hover {
    background: var(--expense);
    color: var(--bg-color);
}

.list {
    list-style: none;
    max-height: 300px;
    overflow-y: auto;
}

.list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--panel-border);
}

.list li:last-child { border-bottom: none; }

.txn-info span:first-child {
    display: block;
    font-weight: 500;
}

.txn-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    gap: 10px;
    margin-top: 2px;
}

.delete-btn {
    background: transparent;
    border: none;
    color: var(--expense);
    cursor: pointer;
    font-size: 1.2rem;
    margin-left: 10px;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.list li:hover .delete-btn { opacity: 1; }


#form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

input, select {
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--panel-border);
    padding: 10px;
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    width: 100%;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s;
}

.btn-primary:active { transform: scale(0.98); }

.form-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
}