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

:root {
    --bg: #f5f5f5;
    --card: #ffffff;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* Login */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container h1 {
    font-size: 1.8rem;
    margin-bottom: 32px;
}

#login-form {
    width: 100%;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#login-form input {
    padding: 14px 16px;
    font-size: 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    outline: none;
    transition: border-color 0.2s;
}

#login-form input:focus {
    border-color: var(--primary);
}

#login-form button {
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.2s;
}

#login-form button:hover {
    background: var(--primary-hover);
}

.error {
    color: var(--danger);
    margin-top: 12px;
    font-size: 14px;
}

/* Header */
header {
    background: var(--card);
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.user-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--primary);
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    padding: 5px 12px;
}

.header-actions {
    display: flex;
    gap: 8px;
}

.btn-small {
    padding: 6px 14px;
    font-size: 13px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-light);
}

.btn-small:hover {
    background: var(--bg);
}

.budget-bar {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
}

.budget-label {
    font-size: 14px;
    color: var(--text-light);
}

.budget-value {
    font-size: 1.4rem;
    font-weight: 700;
}

.budget-value.positive { color: var(--success); }
.budget-value.negative { color: var(--danger); }

.budget-detail {
    font-size: 12px;
    color: var(--text-light);
}

/* Tabs */
.tabs {
    display: flex;
    background: var(--card);
    border-bottom: 1px solid var(--border);
}

.tab {
    flex: 1;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    color: var(--text-light);
    transition: all 0.2s;
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Tab content */
.tab-content {
    padding: 16px;
    max-width: 480px;
    margin: 0 auto;
}

.tab-content.active { display: block; }

/* Step: Category grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.category-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 16px 8px;
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}

.category-btn:hover,
.category-btn:active {
    border-color: var(--primary);
    background: #eff6ff;
}

.category-btn .icon {
    font-size: 28px;
}

/* Step: Template list */
.template-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.template-btn {
    padding: 14px 16px;
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    text-align: left;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s;
}

.template-btn:hover,
.template-btn:active {
    border-color: var(--primary);
    background: #eff6ff;
}

.template-btn .template-tags {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
}

.btn-back {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    font-weight: 600;
    background: var(--card);
    color: var(--primary);
    border: 2px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    margin-bottom: 12px;
    transition: background 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.btn-back:hover,
.btn-back:active {
    background: #eff6ff;
}

/* Tags */
.tags-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-toggle {
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 500;
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: 20px;
    cursor: pointer;
    color: var(--text-light);
    transition: all 0.15s;
    -webkit-tap-highlight-color: transparent;
}

.tag-toggle.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Custom entry footer button */
.btn-custom-entry {
    display: block;
    width: 100%;
    padding: 14px;
    margin-top: 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    background: transparent;
    border: 2px dashed var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.btn-custom-entry:hover,
.btn-custom-entry:active {
    border-color: var(--primary);
    color: var(--primary);
    background: #eff6ff;
}

/* Form */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 4px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"] {
    width: 100%;
    padding: 12px 14px;
    font-size: 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    outline: none;
    background: var(--card);
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--primary);
}

.form-group input[readonly] {
    background: var(--bg);
    color: var(--text-light);
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
}

.btn-submit {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    background: var(--success);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: opacity 0.2s;
    margin-top: 8px;
}

.btn-submit:hover {
    opacity: 0.9;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success);
    color: white;
    padding: 18px 32px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 28px;
    z-index: 100;
    animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Entries month header */
.entries-month-header {
    text-align: center;
    margin-bottom: 14px;
}

.entries-month-header .month-name {
    font-size: 1.2rem;
    font-weight: 700;
}

.entries-month-header .month-file {
    font-size: 13px;
    color: var(--text-light);
}

/* Date cell with calendar icon */
.date-cell {
    text-align: center;
    width: 40px;
}

.day-icon {
    color: var(--primary);
    display: block;
    margin: 0 auto;
}

/* Entries table */
.entries-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

#entries-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

#entries-table th {
    text-align: left;
    padding: 10px 8px;
    font-size: 12px;
    color: var(--text-light);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

#entries-table td {
    padding: 10px 8px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

#entries-table tr:last-child td {
    border-bottom: none;
}

.amount-cell {
    font-weight: 600;
    white-space: nowrap;
}

/* Clickable entry rows */
.entry-row {
    cursor: pointer;
    transition: background 0.15s;
}

.entry-row:active,
.entry-row.expanded {
    background: #f0f4ff;
}

.entry-detail .detail-cell {
    padding: 8px 12px 12px;
    background: #f9fafb;
    border-bottom: 1px solid var(--border);
}

.detail-row {
    font-size: 13px;
    color: var(--text);
    margin-bottom: 4px;
}

.detail-label {
    font-weight: 600;
    color: var(--text-light);
}

.detail-tag {
    display: inline-block;
    padding: 2px 10px;
    margin: 2px 4px 2px 0;
    font-size: 12px;
    background: var(--primary);
    color: white;
    border-radius: 12px;
}

.no-tags {
    color: var(--text-light);
}

.center-text {
    text-align: center;
    color: var(--text-light);
    padding: 32px 0;
}

/* Summary blocks */
.summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 16px;
}

.summary-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px;
}

.summary-card.full-width {
    grid-column: 1 / -1;
}

.summary-card h4 {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 4px;
    font-weight: 500;
}

.summary-card .value {
    font-size: 1.1rem;
    font-weight: 700;
}

.category-breakdown {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.category-row {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

.category-row .cat-name {
    color: var(--text-light);
}

.category-row .cat-amount {
    font-weight: 600;
}

.category-row.item-row {
    padding-left: 20px;
    font-size: 14px;
    border-left: 2px solid var(--border);
    margin-left: 4px;
    padding-top: 2px;
    padding-bottom: 2px;
}

.category-row.item-row .cat-name {
    color: var(--text);
    opacity: 0.7;
}

.category-row.item-row .cat-amount {
    font-weight: 500;
    font-size: 14px;
}

.summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.btn-detail-toggle {
    padding: 4px 12px;
    font-size: 13px;
    font-weight: 500;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    color: var(--primary);
    -webkit-tap-highlight-color: transparent;
}

/* Step heading */
.step h3 {
    font-size: 16px;
    margin-bottom: 12px;
}

/* Responsive: larger screens */
@media (min-width: 600px) {
    .tab-content {
        max-width: 520px;
    }

    .category-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}