style.css

/* VAULT — Dark Theme */
:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --bg-input: #1a1a3e;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --accent: #e94560;
    --success: #00d672;
    --warning: #ffc107;
    --danger: #e94560;
    --border: #2a2a4e;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 0 1rem 2rem;
}

header {
    text-align: center;
    padding: 1.5rem 0 0.5rem;
}

header h1 {
    font-size: 2.2rem;
    color: var(--accent);
    letter-spacing: 2px;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

nav#tabs {
    display: flex;
    gap: 0.25rem;
    justify-content: center;
    padding: 1rem 0;
    flex-wrap: wrap;
}

.tab-btn {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.tab-btn:hover { background: var(--bg-card); color: var(--text-primary); }
.tab-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.tab-content { display: none; }
.tab-content.active { display: block; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.2rem;
    text-align: center;
}

.stat-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.stat-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
}

.stat-card.income .stat-value { color: var(--success); }
.stat-card.expense .stat-value { color: var(--danger); }
.stat-card.net .stat-value { color: var(--warning); }

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card h2 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.entry-form { display: flex; flex-direction: column; gap: 0.75rem; }

.form-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.form-row > * { flex: 1; min-width: 120px; }

input, select, textarea {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.6rem 0.8rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

textarea { min-height: 60px; resize: vertical; }

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

.btn-primary {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.85; }

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
}

.btn-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
}

.btn-small {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
}

.filter-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.filter-row label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.totals-row {
    display: flex;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
    font-size: 0.95rem;
}

.item-list { display: flex; flex-direction: column; gap: 0.5rem; }

.item {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.item-info { flex: 1; min-width: 200px; }
.item-info .name { font-weight: 600; }
.item-info .meta { color: var(--text-secondary); font-size: 0.8rem; }
.item-amount { font-weight: 700; font-size: 1.1rem; }
.item-amount.income { color: var(--success); }
.item-amount.expense{ color: var(--danger); }
.item-actions { display: flex; gap: 0.3rem; }

.bill-list { display: flex; flex-direction: column; gap: 0.3rem; }

.bill-item {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
}

.bill-item .bill-name { font-weight: 600; }
.bill-item .bill-due { color: var(--text-secondary); font-size: 0.85rem; }
.bill-item .bill-amount { font-weight: 700; }
.bill-item.overdue .bill-due { color: var(--danger); }

.budget-bars { display: flex; flex-direction: column; gap: 1rem; }

.budget-bar-wrap label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
}

.budget-bar {
    height: 10px;
    background: var(--bg-card);
    border-radius: 5px;
    overflow: hidden;
}

.budget-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.5s ease;
}

.hint { color: var(--text-secondary); font-size: 0.8rem; margin-bottom: 0.5rem; }

footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 2rem 0 1rem;
}

.empty-state {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

@media (max-width: 600px) {
    .form-row { flex-direction: column; }
    .form-row > * { min-width: 0; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .item { flex-direction: column; align-items: flex-start; }
}