:root {
    --bg-main: #0d0d0d;
    --bg-card: #141414;
    --bg-hover: #1c1c1c;
    --border-color: #262626;
    --text-primary: #f5f5f5;
    --text-secondary: #a0a0a0;
    --accent-color: #3b82f6;
    --profit-color: #16a34a;
    --loss-color: #dc2626;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    line-height: 1.5;
}

/* --- SIDEBAR (ESCRIPTORI) --- */
.sidebar {
    width: 240px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem 1rem;
    transition: width 0.25s ease, padding 0.25s ease;
    flex-shrink: 0;
}

.sidebar.collapsed {
    width: 0;
    padding: 0;
    overflow: hidden;
    border-right: none;
}

.logo {
    padding: 0 0.75rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.25rem;
}

.logo h2 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex: 1;
}

.nav-links li {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.15s ease;
    user-select: none;
}

.nav-links li:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.nav-links li.active {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-weight: 600;
}

.auth-section {
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* --- CONTINGUT PRINCIPAL --- */
.main-content {
    flex: 1;
    padding: 1.75rem 2rem;
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    overflow-x: hidden;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.75rem;
    flex-wrap: wrap;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.header-left h1 {
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.user-status {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.status-badge {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.75rem;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.status-online {
    color: var(--profit-color);
    font-size: 0.85rem;
    font-weight: 600;
}

.status-offline {
    color: var(--loss-color);
    font-size: 0.85rem;
    font-weight: 600;
}

/* --- TARGETES I RESUM --- */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.mt-2 {
    margin-top: 1.5rem;
}

.summary-header {
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.summary-header .label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}

.summary-header .total-value {
    font-size: 2.6rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.summary-details {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1rem;
}

.detail-item .label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.detail-item .value {
    font-size: 1.2rem;
    font-weight: 700;
}

.profit {
    color: var(--profit-color) !important;
}

.loss {
    color: var(--loss-color) !important;
}

/* --- GRÀFICA --- */
.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.chart-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

.timeframe-selector {
    display: flex;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.2rem;
    gap: 0.2rem;
}

.tf-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.35rem 0.85rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.tf-btn:hover {
    color: var(--text-primary);
}

.tf-btn.active {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border-color: #ffffff;
}

.canvas-wrapper {
    position: relative;
    height: 300px;
    width: 100%;
}

/* --- TAULES --- */
.section-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.section-card-header h3,
.card h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.card > h3 {
    margin-bottom: 1rem;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th,
.data-table td {
    padding: 0.8rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table th {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.data-table tbody tr:hover {
    background-color: var(--bg-hover);
}

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

.empty-row {
    text-align: center !important;
    color: var(--text-secondary);
    padding: 1.5rem !important;
    white-space: normal !important;
}

/* --- FORMULARIS I BOTONS --- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group select {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.65rem 0.8rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.15s ease;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-color);
}

.btn {
    padding: 0.65rem 1.15rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    border: 1px solid transparent;
    width: 100%;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
    width: auto;
}

.btn-primary:hover {
    filter: brightness(1.1);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

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

.btn-icon {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.45rem 0.7rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
}

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

/* --- MODAL LOGIN --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.78);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    z-index: 2000;
}

.modal-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 1.75rem;
    width: 100%;
    max-width: 400px;
}

.modal-card h3 {
    margin-bottom: 0.35rem;
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 1.25rem;
}

.modal-card .form-group {
    margin-bottom: 1rem;
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.modal-actions .btn {
    flex: 1;
}

/* --- NOTIFICACIONS (TOASTS) --- */
.toast-container {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 3000;
}

.toast {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.88rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

.toast.success {
    border-left: 4px solid var(--profit-color);
}

.toast.error {
    border-left: 4px solid var(--loss-color);
}

.toast.info {
    border-left: 4px solid var(--accent-color);
}

/* =========================================================
   VERSIÓ MÒBIL (PANTALLES <= 768px)
   ========================================================= */
@media (max-width: 768px) {
    body {
        flex-direction: column;
    }

    /* Barra inferior estil app nativa */
    .sidebar,
    .sidebar.collapsed {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: auto;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 0.45rem 0.5rem calc(0.45rem + env(safe-area-inset-bottom));
        border-right: none;
        border-top: 1px solid var(--border-color);
        background-color: rgba(20, 20, 20, 0.97);
        backdrop-filter: blur(10px);
        z-index: 1000;
        overflow: visible;
    }

    .logo,
    #toggle-sidebar {
        display: none !important;
    }

    .nav-links {
        flex-direction: row;
        justify-content: space-around;
        align-items: center;
        gap: 0.25rem;
        flex: 1;
    }

    .nav-links li {
        padding: 0.5rem 0.45rem;
        font-size: 0.8rem;
        text-align: center;
        border-radius: 8px;
        flex: 1;
    }

    .auth-section {
        border-top: none;
        padding-top: 0;
        padding-left: 0.35rem;
        flex-shrink: 0;
    }

    .auth-section div {
        display: none;
    }

    .auth-section .btn {
        padding: 0.45rem 0.6rem;
        font-size: 0.75rem;
        white-space: nowrap;
    }

    /* Espai inferior perquè la barra no tapi el contingut */
    .main-content {
        padding: 1rem 0.85rem calc(5.2rem + env(safe-area-inset-bottom));
    }

    .top-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.6rem;
        margin-bottom: 1rem;
    }

    .header-left h1 {
        font-size: 1.35rem;
    }

    .user-status {
        width: 100%;
        gap: 0.45rem;
    }

    .status-badge {
        font-size: 0.75rem;
        padding: 0.28rem 0.55rem;
    }

    .status-online,
    .status-offline {
        font-size: 0.75rem;
    }

    /* Targetes més compactes */
    .card {
        padding: 1rem;
        margin-bottom: 1rem;
        border-radius: 10px;
    }

    .summary-header {
        margin-bottom: 0.9rem;
        padding-bottom: 0.9rem;
    }

    .summary-header .total-value {
        font-size: 2rem;
    }

    /* Mètriques en 2 columnes clares */
    .summary-details {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.85rem 0.65rem;
    }

    .detail-item .label {
        font-size: 0.7rem;
    }

    .detail-item .value {
        font-size: 1.05rem;
    }

    /* Gràfica adaptada al mòbil */
    .chart-header {
        gap: 0.65rem;
        margin-bottom: 0.85rem;
    }

    .timeframe-selector {
        width: 100%;
    }

    .tf-btn {
        flex: 1;
        padding: 0.45rem 0.5rem;
        font-size: 0.82rem;
    }

    .canvas-wrapper {
        height: 235px;
    }

    /* Taules llegibles amb lliscament suau */
    .data-table {
        font-size: 0.82rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.6rem 0.55rem;
    }

    /* Formularis a una columna i sense auto-zoom */
    .form-grid {
        grid-template-columns: 1fr;
        gap: 0.85rem;
    }

    .form-group input,
    .form-group select {
        font-size: 16px;
    }

    .btn-primary {
        width: 100%;
        padding: 0.75rem;
    }

    .toast-container {
        bottom: calc(4.75rem + env(safe-area-inset-bottom));
        left: 0.85rem;
        right: 0.85rem;
    }
}