:root {
    --bg: #0b0f1e;
    --surface: rgba(18, 26, 52, 0.85);
    --surface-hover: rgba(28, 38, 70, 0.9);
    --border: rgba(99, 119, 200, 0.18);
    --border-hover: rgba(99, 119, 200, 0.4);
    --accent: #6366f1;
    --accent2: #a855f7;
    --accent-glow: rgba(99, 102, 241, 0.25);
    --text: #e8eaf8;
    --muted: #7c85b3;
    --success: #22c55e;
    --danger: #f43f5e;
    --warning: #f59e0b;
    --radius: 20px;
    --radius-sm: 12px;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(ellipse 80% 50% at 15% -10%, rgba(99, 102, 241, 0.2) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 85% 100%, rgba(168, 85, 247, 0.15) 0%, transparent 60%);
    background-attachment: fixed;
}

.app {
    max-width: 1440px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}

/* ─── Header ─── */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0 2.5rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: .75rem;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border-radius: 14px;
    display: grid;
    place-items: center;
    font-size: 1.3rem;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(99, 102, 241, .4);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -.02em;
}

.logo h1 span {
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    font-size: .7rem;
    background: var(--accent-glow);
    border: 1px solid var(--border-hover);
    color: var(--accent);
    padding: .2rem .6rem;
    border-radius: 99px;
    margin-left: .5rem;
    vertical-align: middle;
}

.year-ctrl {
    display: flex;
    align-items: center;
    gap: .75rem;
    background: var(--surface);
    border: 1px solid var(--border);
    padding: .6rem 1.2rem;
    border-radius: var(--radius-sm);
    backdrop-filter: blur(12px);
}

.year-ctrl label {
    font-size: .85rem;
    color: var(--muted);
}

.year-ctrl select {
    background: transparent;
    color: var(--text);
    border: none;
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    outline: none;
    font-weight: 600;
}

select option {
    background: #0b0f1e;
}

/* ─── Cards / Glass ─── */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 2rem;
    margin-bottom: 1.75rem;
    transition: border-color .3s;
}

.card:hover {
    border-color: var(--border-hover);
}

/* ─── Upload Section ─── */
.upload-title {
    text-align: center;
    margin-bottom: 2rem;
}

.upload-title h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: .4rem;
}

.upload-title p {
    color: var(--muted);
    font-size: .9rem;
}

.dropzone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: 3.5rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all .3s ease;
    position: relative;
}

.dropzone:hover,
.dropzone.over {
    border-color: var(--accent);
    background: rgba(99, 102, 241, 0.06);
}

.dropzone .dz-icon {
    font-size: 2.8rem;
    display: block;
    margin-bottom: .8rem;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.dropzone p {
    font-size: 1rem;
    margin-bottom: .4rem;
}

.dropzone small {
    color: var(--muted);
    font-size: .85rem;
}

.file-list {
    margin-top: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

.file-pill {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(99, 102, 241, .08);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: .6rem 1rem;
    font-size: .875rem;
}

.file-pill .name {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.file-pill .pill-badge {
    font-size: .7rem;
    padding: .15rem .5rem;
    border-radius: 99px;
    font-weight: 600;
    text-transform: uppercase;
}

.pill-binance {
    background: rgba(240, 185, 11, .15);
    color: #f0b90b;
    border: 1px solid rgba(240, 185, 11, .3);
}

.pill-bitmex {
    background: rgba(168, 85, 247, .15);
    color: #c084fc;
    border: 1px solid rgba(168, 85, 247, .3);
}

.pill-unknown {
    background: rgba(200, 200, 200, .1);
    color: var(--muted);
    border: 1px solid var(--border);
}

.file-pill .size {
    color: var(--muted);
    font-size: .8rem;
}

/* ─── Buttons ─── */
.btn {
    padding: .85rem 2.2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all .25s;
    border: none;
    font-family: inherit;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    box-shadow: 0 4px 20px rgba(99, 102, 241, .35);
    display: block;
    margin: 1.75rem auto 0;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(99, 102, 241, .5);
}

.btn-primary:disabled {
    opacity: .45;
    cursor: not-allowed;
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    font-size: .875rem;
    padding: .6rem 1.4rem;
}

.btn-secondary:hover {
    border-color: var(--border-hover);
    background: var(--surface-hover);
}

/* ─── Stats Grid ─── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.75rem;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem 1.75rem;
    backdrop-filter: blur(14px);
    transition: transform .25s, border-color .25s;
}

.stat-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
}

.stat-label {
    font-size: .78rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: .5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -.03em;
}

.stat-value.positive {
    color: var(--success);
}

.stat-value.negative {
    color: var(--danger);
}

.stat-value.neutral {
    color: var(--text);
}

.stat-sub {
    font-size: .8rem;
    color: var(--muted);
    margin-top: .3rem;
}

/* ─── Table ─── */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}

th {
    padding: .75rem 1rem;
    text-align: left;
    color: var(--muted);
    font-weight: 500;
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    cursor: pointer;
    /* Añadido para sort */
    user-select: none;
    transition: color 0.2s;
}

th:hover {
    color: var(--text);
}

th.sort-asc::after {
    content: " ↑";
    color: var(--accent);
}

th.sort-desc::after {
    content: " ↓";
    color: var(--accent);
}

td {
    padding: .85rem 1rem;
    border-bottom: 1px solid rgba(99, 119, 200, .08);
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background .15s;
}

tbody tr:hover td {
    background: rgba(99, 102, 241, .04);
}

.td-profit.positive {
    color: var(--success);
    font-weight: 600;
}

.td-profit.negative {
    color: var(--danger);
    font-weight: 600;
}

.asset-chip {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    background: rgba(99, 102, 241, .08);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: .15rem .6rem;
    font-weight: 600;
}

.zero-price {
    color: var(--warning);
    font-weight: 600;
}

.empty-row td {
    text-align: center;
    color: var(--muted);
    padding: 3rem;
}

/* ─── Progress ─── */
.progress-wrap {
    display: none;
    margin-top: 1rem;
}

.progress-bar-bg {
    background: rgba(99, 102, 241, .12);
    border-radius: 99px;
    height: 6px;
}

.progress-bar-fill {
    height: 6px;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    width: 0%;
    transition: width .3s;
}

.progress-label {
    font-size: .8rem;
    color: var(--muted);
    margin-top: .4rem;
    text-align: center;
}

/* ─── Warnings ─── */
.warn-box {
    background: rgba(245, 158, 11, .08);
    border: 1px solid rgba(245, 158, 11, .25);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    font-size: .875rem;
    color: #fbbf24;
    display: none;
    margin-top: 1.25rem;
    position: relative;
}

.warn-close {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    background: transparent;
    border: none;
    color: inherit;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.warn-close:hover {
    opacity: 1;
}

.warn-box ul {
    padding-left: 1.2rem;
    margin-top: .4rem;
}

/* ─── Tabs & Filters ─── */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.tabs-nav {
    display: flex;
    gap: .5rem;
    background: rgba(18, 26, 52, 0.4);
    padding: .4rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--muted);
    padding: .6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    transition: all .2s;
    font-size: .9rem;
}

.tab-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: white;
    background: var(--accent);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.filter-ctrl {
    display: flex;
    align-items: center;
    gap: .75rem;
    background: var(--surface);
    border: 1px solid var(--border);
    padding: .5rem 1rem;
    border-radius: var(--radius-sm);
}

.filter-ctrl label {
    font-size: .8rem;
    color: var(--muted);
    white-space: nowrap;
}

.filter-ctrl select {
    background: transparent;
    color: var(--text);
    border: none;
    outline: none;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    min-width: 120px;
}

.tab-pane {
    display: none;
    animation: fadeIn .3s ease-out;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.inventory-card {
    border-left: 4px solid var(--accent);
}

.inventory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.inv-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

.inv-asset {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    justify-content: space-between;
}

.inv-details {
    font-size: .85rem;
    color: var(--muted);
}

.inv-val {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    margin-top: .25rem;
}

/* ─── Footer ─── */
footer {
    text-align: center;
    color: var(--muted);
    font-size: .82rem;
    padding: 2rem 0 1rem;
    border-top: 1px solid var(--border);
}

/* ─── Misc ─── */
.hidden {
    display: none !important;
}

.section-divider {
    margin-bottom: 1.75rem;
}

@media (max-width: 640px) {
    header {
        flex-direction: column;
        gap: 1.2rem;
        align-items: flex-start;
    }

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

    .card {
        padding: 1.25rem;
    }
}