/* ===== ContaGotas Dark Design System =====
 * Style: Dark OLED + Fintech Professional
 * Mobile-first with progressive enhancement
 */
@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600;700&family=Fira+Sans:wght@300;400;500;600;700&display=swap');

:root {
    --color-bg: #020617;
    --color-card: #0F172A;
    --color-card-hover: #1E293B;
    --color-primary: #F8FAFC;
    --color-secondary: #CBD5E1;
    --color-muted: #64748B;
    --color-border: #1E293B;
    --color-border-light: #334155;
    --color-cta: #22C55E;
    --color-cta-hover: #16A34A;
    --color-cta-glow: rgba(34, 197, 94, 0.25);
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;
    --color-danger-dim: rgba(239, 68, 68, 0.15);
    --color-cta-dim: rgba(34, 197, 94, 0.15);
    --font-heading: 'Fira Code', monospace;
    --font-body: 'Fira Sans', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --shadow-card: 0 0 0 1px var(--color-border), 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
    --shadow-cta: 0 0 20px var(--color-cta-glow);
    --header-height: 56px;
}

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    background: var(--color-bg);
    color: var(--color-primary);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    padding-top: var(--header-height);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== Header ===== */
.app-header {
    background: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
}
.app-header .container {
    width: 100%;
    padding: 0 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}
.app-header .header-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    min-width: 0;
}
.app-header .header-right {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
}
.brand-icon {
    width: 36px; height: 36px;
    background: var(--color-cta);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 10px var(--color-cta-glow);
}
.brand-icon i { color: #020617; font-size: 1rem; }
.brand-name {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0;
    line-height: 1.2;
    letter-spacing: -0.01em;
    white-space: nowrap;
}
.brand-sub { display: none; }

/* ===== Main Container ===== */
main.container {
    padding: 0.75rem;
    max-width: 100%;
}

/* ===== Stats Grid ===== */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}
.stat-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 0.75rem;
    display: flex; align-items: center; gap: 0.625rem;
    transition: background .2s, border-color .2s, box-shadow .2s;
}
.stat-card:active {
    background: var(--color-card-hover);
    border-color: var(--color-border-light);
}
.stat-icon {
    width: 40px; height: 40px;
    min-width: 40px; min-height: 40px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.stat-icon i { font-size: 1rem; }
.stat-icon-blue { background: rgba(59, 130, 246, 0.15); color: #60A5FA; }
.stat-icon-zinc { background: rgba(100, 116, 139, 0.2); color: #94A3B8; }
.stat-icon-emerald { background: var(--color-cta-dim); color: var(--color-cta); }
.stat-icon-amber { background: rgba(245, 158, 11, 0.15); color: var(--color-warning); }
.stat-body { min-width: 0; flex: 1; }
.stat-label { font-size: 0.62rem; color: var(--color-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 0.15rem; }
.stat-value { font-size: 1.1rem; font-weight: 700; color: var(--color-primary); font-variant-numeric: tabular-nums; font-family: var(--font-heading); letter-spacing: -0.02em; line-height: 1.1; }
.stat-trend { font-size: 0.68rem; font-weight: 600; margin-top: 0.1rem; }
.stat-trend.positive { color: var(--color-cta); }
.stat-trend.negative { color: var(--color-danger); }
.stat-sub { font-size: 0.7rem; color: var(--color-muted); margin-top: 0.1rem; }

/* ===== Charts ===== */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}
.chart-panel, .table-panel, .side-panel {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}
.table-panel { margin-bottom: 0.75rem; }
.chart-container { padding: 0.75rem; min-height: 220px; }

/* ===== Panel ===== */
.panel-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.75rem 0.875rem;
    border-bottom: 1px solid var(--color-border);
    gap: 0.5rem;
}
.panel-header-row { flex-wrap: wrap; }
.panel-title {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    flex-shrink: 0;
}
.panel-badge {
    font-size: 0.62rem;
    font-weight: 600;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-bg);
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    border: 1px solid var(--color-border);
}
.panel-body { padding: 0.625rem 0.875rem; }
.panel-footer {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.5rem 0.875rem;
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ===== Table ===== */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.expense-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
    min-width: 650px;
}
.expense-table th {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-muted);
    padding: 0.5rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}
.expense-table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid rgba(30, 41, 59, 0.5);
    vertical-align: middle;
    color: var(--color-secondary);
}
.expense-table tbody tr { transition: background .15s; }
.expense-table tbody tr:active { background: var(--color-card-hover); }
.expense-table tbody tr.clickable { cursor: pointer; }
.col-amount { text-align: right; }
.col-action { text-align: center; width: 44px; }
.empty-row { text-align: center; color: var(--color-muted); padding: 2rem !important; }

/* ===== Expense Cards (Mobile) ===== */
.expense-cards { display: flex; flex-direction: column; gap: 0.5rem; padding: 0.5rem 0; }
.expense-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 0.75rem;
    display: flex; flex-direction: column; gap: 0.5rem;
    transition: background .15s, border-color .15s;
    cursor: pointer;
}
.expense-card:active {
    background: var(--color-card-hover);
    border-color: var(--color-border-light);
}
.expense-card-header {
    display: flex; align-items: center; justify-content: space-between;
    gap: 0.5rem;
}
.expense-card-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-primary);
    flex: 1; min-width: 0;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.expense-card-amount {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-primary);
    white-space: nowrap;
    flex-shrink: 0;
}
.expense-card-meta {
    display: flex; align-items: center; gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.7rem;
    color: var(--color-muted);
}
.expense-card-meta span { display: inline-flex; align-items: center; gap: 0.2rem; }
.expense-card-actions {
    display: flex; align-items: center; justify-content: flex-end;
    gap: 0.25rem;
    margin-top: 0.25rem;
}
.expense-card .cat-tag { font-size: 0.62rem; padding: 0.15em 0.5em; }
.expense-card-checkbox {
    width: 20px; height: 20px;
    cursor: pointer;
    accent-color: var(--color-cta);
    flex-shrink: 0;
}

/* Category tags */
.cat-tag {
    display: inline-block;
    padding: 0.2em 0.65em;
    border-radius: 6px;
    font-size: 0.65rem;
    font-weight: 700;
    font-family: var(--font-body);
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.cat-Food { background: rgba(34, 197, 94, 0.15); color: #4ADE80; }
.cat-Hotel { background: rgba(59, 130, 246, 0.15); color: #60A5FA; }
.cat-Transport { background: rgba(245, 158, 11, 0.15); color: #FBBF24; }
.cat-Other { background: rgba(100, 116, 139, 0.2); color: #94A3B8; }

.amount-cell { font-weight: 700; font-variant-numeric: tabular-nums; font-family: var(--font-heading); color: var(--color-primary); font-size: 0.85rem; }
.amount-cell small { font-size: 0.7rem; color: var(--color-muted); font-family: var(--font-body); }
.text-muted { color: var(--color-muted); }

/* ===== Buttons ===== */
.btn-cta {
    background: var(--color-cta);
    color: #020617;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: background .2s, box-shadow .2s, transform .15s;
    display: inline-flex; align-items: center; gap: 0.3rem;
    font-family: var(--font-body);
    letter-spacing: 0.01em;
    min-height: 44px;
    white-space: nowrap;
}
.btn-cta:active { transform: scale(0.97); }

.btn-ghost {
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s, border-color .2s, color .2s;
    display: inline-flex; align-items: center; gap: 0.3rem;
    font-family: var(--font-body);
    min-height: 44px;
    white-space: nowrap;
}

.btn-icon {
    background: var(--color-card-hover);
    color: var(--color-secondary);
    border: 1px solid var(--color-border);
    width: 44px; height: 44px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    transition: background .2s, color .2s, transform .15s;
    flex-shrink: 0;
    font-size: 1.1rem;
}
.btn-icon:active { transform: scale(0.95); }

.btn-danger {
    background: none; border: none;
    color: var(--color-muted);
    cursor: pointer;
    padding: 0.35rem;
    border-radius: 8px;
    transition: color .2s, background .2s;
    min-width: 44px; min-height: 44px;
    display: inline-flex; align-items: center; justify-content: center;
}
.btn-danger:active { color: var(--color-danger); background: var(--color-danger-dim); }

.btn-page {
    min-width: 44px; height: 44px;
    border: 1px solid var(--color-border);
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.78rem;
    color: var(--color-muted);
    transition: all .15s;
    font-family: var(--font-body);
    display: inline-flex; align-items: center; justify-content: center;
}
.btn-page:active { border-color: var(--color-cta); color: var(--color-cta); }
.btn-page.active { background: var(--color-cta); color: #020617; border-color: var(--color-cta); }

/* ===== Filters ===== */
.filter-bar { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.filter-select, .filter-input {
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-secondary);
    outline: none;
    transition: border-color .2s, color .2s;
    cursor: pointer;
    min-height: 44px;
    max-width: 100%;
}
.filter-select:focus, .filter-input:focus { border-color: var(--color-cta); color: var(--color-primary); }
.filter-input[type="month"]::-webkit-calendar-picker-indicator { filter: invert(0.6); cursor: pointer; }

/* ===== Side Grid ===== */
.side-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

/* ===== Whitelist ===== */
.wl-form {
    display: flex; gap: 0.4rem;
    margin-bottom: 0.5rem;
}
.wl-input {
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--font-body);
    outline: none;
    flex: 1; min-width: 0;
    background: var(--color-bg);
    color: var(--color-secondary);
    min-height: 44px;
}
.wl-input-sm { flex: 0.6; }
.wl-input:focus { border-color: var(--color-cta); color: var(--color-primary); }
.wl-list { max-height: 200px; overflow-y: auto; }
.wl-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.78rem;
    gap: 0.5rem;
}
.wl-item code {
    font-size: 0.68rem;
    background: var(--color-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 6px;
    font-weight: 600;
    color: var(--color-secondary);
    font-family: var(--font-mono);
    word-break: break-all;
}
.wl-label { color: var(--color-muted); font-size: 0.68rem; margin-left: 0.3rem; }

/* ===== Trip items ===== */
.trip-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.75rem 0.85rem;
    border-radius: 10px;
    cursor: pointer;
    margin-bottom: 0.4rem;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    transition: background .15s, border-color .15s;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.trip-item:active { background: var(--color-card-hover); border-color: var(--color-border-light); }
.trip-name { font-weight: 700; font-size: 0.85rem; color: var(--color-primary); word-break: break-word; }
.trip-meta { font-size: 0.7rem; color: var(--color-muted); margin-top: 0.15rem; }
.trip-link {
    color: var(--color-cta);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex; align-items: center; gap: 0.25rem;
    transition: opacity .2s;
    font-family: var(--font-body);
    min-height: 44px;
    align-items: center;
}
.trip-link:active { opacity: 0.8; }
.trip-actions { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.trip-actions .btn-danger {
    padding: 0.25rem 0.4rem;
    font-size: 0.75rem;
    line-height: 1;
    min-width: 44px; min-height: 44px;
}

/* ===== Suggestion items ===== */
.suggest-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.6rem 0.85rem;
    border-radius: 10px;
    margin-bottom: 0.3rem;
    background: var(--color-card);
    border: 1px dashed var(--color-border-light);
    transition: background .15s;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.suggest-item:active { background: var(--color-card-hover); }
.suggest-item .trip-name { color: var(--color-primary); }
.suggest-badge {
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
    text-transform: uppercase;
    white-space: nowrap;
}
.suggest-badge.new { background: var(--color-cta-dim); color: var(--color-cta); border: 1px solid var(--color-cta); }
.suggest-badge.extend { background: rgba(59,130,246,0.12); color: #60a5fa; border: 1px solid rgba(59,130,246,0.3); }
.btn-apply {
    background: var(--color-cta);
    color: #020617;
    border: none;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    cursor: pointer;
    transition: background .2s, box-shadow .2s;
    font-family: var(--font-body);
    min-height: 44px;
    white-space: nowrap;
}
.btn-apply:active { background: var(--color-cta-hover); box-shadow: var(--shadow-cta); }
.suggestions-label {
    font-size: 0.62rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-muted);
    padding: 0.5rem 0.85rem 0.3rem;
}

.btn-trip-expand {
    background: var(--color-card-hover);
    color: var(--color-secondary);
    border: 1px solid var(--color-border);
    width: 44px; height: 44px;
    border-radius: 10px;
    display: inline-flex; align-items: center; justify-content: center;
    cursor: pointer;
    transition: background .2s, color .2s, border-color .2s, box-shadow .2s;
    font-size: 0.9rem;
}
.btn-trip-expand:active { background: var(--color-border-light); color: var(--color-cta); border-color: var(--color-cta); box-shadow: 0 0 10px var(--color-cta-glow); }

.muted-text { color: var(--color-muted); font-size: 0.8rem; }

/* ===== Footer info ===== */
.footer-info { font-size: 0.75rem; color: var(--color-muted); }
.pagination-btns { display: flex; gap: 0.35rem; flex-wrap: wrap; }

/* ===== Modal overrides ===== */
.modal-content { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-2xl); color: var(--color-primary); }
.modal-header { border-bottom: 1px solid var(--color-border); padding: 0.875rem 1rem; }
.modal-title { font-family: var(--font-heading); font-size: 0.85rem; font-weight: 600; color: var(--color-primary); }
.modal-footer { border-top: 1px solid var(--color-border); flex-wrap: wrap; gap: 0.5rem; }
.btn-close { filter: invert(1) grayscale(100%) brightness(200%); opacity: 0.4; }
.btn-close:hover { opacity: 0.9; }
.modal-backdrop.show { backdrop-filter: blur(4px); }
.modal-backdrop { background-color: rgba(2, 6, 23, 0.8); }
#tripDetailModal .modal-body { padding: 0; }
#receiptModal .modal-body.bg-dark { background: #020617 !important; }

/* ===== Sections spacing ===== */
#admin-panel { margin-top: 0.75rem; }
#trips-panel { margin-top: 0.75rem; }

/* ===== Lang select ===== */
#lang-select {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 0.25rem 0.4rem;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-secondary);
    outline: none;
    cursor: pointer;
    transition: border-color .2s;
    height: 32px;
}
#lang-select option { background: var(--color-card); color: var(--color-primary); }
#lang-select:active { border-color: var(--color-cta); color: var(--color-primary); }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-border-light); }

/* ===== Login ===== */
.login-screen {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
}
.login-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: 2rem 1.5rem;
    width: 100%;
    max-width: 360px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-card), 0 0 60px rgba(0,0,0,0.5);
}
.login-card .brand-icon { width: 48px; height: 48px; }
.login-card .brand-icon i { font-size: 1.3rem; }
.login-card .brand-name { font-size: 1.4rem; }
.login-subtitle {
    color: var(--color-muted);
    font-size: 0.82rem;
    margin: 0;
    text-align: center;
}
.token-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    font-size: 0.9rem;
    font-family: var(--font-mono);
    background: var(--color-bg);
    color: var(--color-primary);
    text-align: center;
    transition: border-color .2s;
    min-height: 48px;
}
.token-input:focus { outline: none; border-color: var(--color-cta); box-shadow: 0 0 0 3px var(--color-cta-glow); }
.btn-login {
    width: 100%;
    padding: 0.625rem;
    background: var(--color-cta);
    color: #020617;
    border: none;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    transition: background .2s, box-shadow .2s;
    font-family: var(--font-body);
    min-height: 48px;
}
.btn-login:active { background: var(--color-cta-hover); box-shadow: var(--shadow-cta); }
.login-hint { color: var(--color-muted); font-size: 0.72rem; text-align: center; margin: 0; }

.user-badge {
    font-size: 0.7rem;
    color: var(--color-muted);
    font-family: var(--font-body);
    white-space: nowrap;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== Bulk Actions Bar ===== */
.bulk-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 0.875rem;
    background: var(--color-card-hover);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}
.bulk-actions span {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-primary);
    flex: 1; min-width: 0;
}
.bulk-actions .btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.72rem;
    min-height: 36px;
}

/* ===== Checkboxes ===== */
.expense-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-cta);
}
#select-all-expenses {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-cta);
}

/* ===== Form Controls ===== */
.form-control, .form-select {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-primary);
    border-radius: 8px;
    padding: 0.55rem 0.75rem;
    font-size: 0.85rem;
    font-family: var(--font-body);
    min-height: 44px;
}
.form-control:focus, .form-select:focus {
    background: var(--color-bg);
    border-color: var(--color-cta);
    color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-cta-glow);
}
.form-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: 0.3rem;
}

/* ===== Toast ===== */
#toast-container {
    position: fixed;
    top: calc(var(--header-height) + 0.5rem);
    right: 0.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
    max-width: calc(100vw - 1rem);
}

/* ===== Responsive visibility ===== */
.mobile-only { display: block; }
.desktop-only { display: none; }
.expense-table-wrap { display: none; }
.expense-cards { display: flex; }

/* ================================================================
 * TABLET (768px+) - Larger touch targets, table view, wider layout
 * ================================================================ */
@media (min-width: 768px) {
    :root {
        --header-height: 56px;
    }

    body {
        padding-top: calc(var(--header-height) + 0.75rem);
    }

    .app-header {
        top: 0.5rem; left: 0.5rem; right: 0.5rem;
        border-radius: 14px;
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-card);
        height: var(--header-height);
    }
    .app-header .container { padding: 0 1rem; }

    main.container {
        padding: 0 1rem;
        max-width: 960px;
        margin: 0 auto;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    .stat-card { padding: 1rem 1.2rem; }
    .stat-value { font-size: 1.3rem; }
    .stat-label { font-size: 0.68rem; }

    .charts-grid { grid-template-columns: 1fr; }

    .table-panel { margin-bottom: 1rem; }

    .expense-cards { display: none; }
    .expense-table-wrap { display: block; }

    .mobile-only { display: none; }
    .desktop-only { display: block; }

    .panel-header { padding: 0.875rem 1.25rem; }
    .panel-title { font-size: 0.82rem; }
    .panel-body { padding: 0.75rem 1.25rem; }
    .panel-footer { padding: 0.65rem 1.25rem; }

    .chart-container { padding: 1rem; min-height: 260px; }

    .btn-cta { padding: 0.45rem 1rem; font-size: 0.8rem; }
    .btn-ghost { padding: 0.35rem 0.8rem; font-size: 0.75rem; }
    .btn-icon { width: 36px; height: 36px; font-size: 1rem; }
    .btn-page { min-width: 32px; height: 32px; font-size: 0.78rem; }

    .filter-select, .filter-input { min-height: 36px; padding: 0.35rem 0.9rem; font-size: 0.78rem; }

    .modal-header { padding: 1rem 1.25rem; }
    .modal-title { font-size: 0.9rem; }

    .login-card { padding: 2.5rem; max-width: 380px; }
    .login-card .brand-icon { width: 52px; height: 52px; }
    .login-card .brand-icon i { font-size: 1.4rem; }
    .login-card .brand-name { font-size: 1.6rem; }
    .login-subtitle { font-size: 0.85rem; }

    .bulk-actions { padding: 0.75rem 1.25rem; gap: 0.75rem; }

    .wl-item { font-size: 0.78rem; padding: 0.4rem 0; }
    .wl-item code { font-size: 0.7rem; }

    .trip-item { padding: 0.7rem 0.85rem; }
    .trip-meta { font-size: 0.72rem; }

    .side-grid { gap: 1rem; }

    #toast-container { right: 1rem; }

    .expense-table th { padding: 0.65rem 1.25rem; font-size: 0.68rem; }
    .expense-table td { padding: 0.6rem 1.25rem; }
    .expense-table { font-size: 0.85rem; }
    .amount-cell { font-size: 0.88rem; }
    .amount-cell small { font-size: 0.72rem; }

    .cat-tag { font-size: 0.68rem; }

    .form-control, .form-select { min-height: 38px; }
}

/* ================================================================
 * DESKTOP (1024px+) - Multi-column layout, side-by-side charts
 * ================================================================ */
@media (min-width: 1024px) {
    :root {
        --header-height: 60px;
    }

    body {
        padding-top: calc(var(--header-height) + 1rem);
    }

    .app-header {
        top: 0.75rem; left: 0.75rem; right: 0.75rem;
        border-radius: 16px;
        height: var(--header-height);
    }
    .app-header .container { padding: 0 1.5rem; }

    main.container {
        max-width: 1200px;
        padding: 0 1.5rem;
    }

    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.75rem;
    }

    .charts-grid {
        grid-template-columns: 2fr 3fr;
    }

    .side-grid {
        grid-template-columns: 1fr 1fr;
    }

    .brand-icon { width: 32px; height: 32px; }
    .brand-name { font-size: 1rem; }
    .brand-icon i { font-size: 0.875rem; }

    .stat-icon { width: 42px; height: 42px; min-width: 42px; min-height: 42px; }
    .stat-icon i { font-size: 1.1rem; }

    .btn-icon { width: 34px; height: 34px; }
}

/* ================================================================
 * LARGE DESKTOP (1440px+) - Wider container
 * ================================================================ */
@media (min-width: 1440px) {
    main.container {
        max-width: 1320px;
    }
}

/* ================================================================
 * HOVER STATES (non-touch devices only)
 * ================================================================ */
@media (hover: hover) and (pointer: fine) {
    .stat-card:hover {
        background: var(--color-card-hover);
        border-color: var(--color-border-light);
        box-shadow: var(--shadow-card);
    }

    .expense-table tbody tr:hover { background: var(--color-card-hover); }
    .expense-table tbody tr.clickable:hover {
        background: var(--color-card-hover);
        box-shadow: inset 3px 0 0 var(--color-cta);
    }

    .btn-cta:hover { background: var(--color-cta-hover); box-shadow: var(--shadow-cta); }
    .btn-ghost:hover { background: var(--color-card-hover); border-color: var(--color-border-light); color: var(--color-primary); }
    .btn-icon:hover { background: var(--color-border-light); color: var(--color-primary); }
    .btn-danger:hover { color: var(--color-danger); background: var(--color-danger-dim); }
    .btn-page:hover { border-color: var(--color-cta); color: var(--color-cta); }
    .btn-trip-expand:hover { background: var(--color-border-light); color: var(--color-cta); border-color: var(--color-cta); box-shadow: 0 0 10px var(--color-cta-glow); }
    .btn-apply:hover { background: var(--color-cta-hover); box-shadow: var(--shadow-cta); }
    .btn-login:hover { background: var(--color-cta-hover); box-shadow: var(--shadow-cta); }
    .trip-link:hover { opacity: 0.8; }
    .trip-item:hover { background: var(--color-card-hover); border-color: var(--color-border-light); }
    .suggest-item:hover { background: var(--color-card-hover); }
    .expense-card:hover {
        background: var(--color-card-hover);
        border-color: var(--color-border-light);
    }
    #lang-select:hover { border-color: var(--color-cta); color: var(--color-primary); }
    .btn-close:hover { opacity: 0.9; }
}