/* Base Styling & iPhone Optimization */
:root {
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

body {
    -webkit-tap-highlight-color: transparent;
}

.safe-bottom {
    padding-bottom: calc(0.5rem + var(--safe-bottom));
}

.nav-link {
    display: flex;
    align-items: center;
    space-x: 0.75rem;
    padding: 0.625rem 0.75rem;
    border-radius: 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: #94a3b8;
    transition: all 0.15s ease-in-out;
}
.nav-link i {
    margin-right: 0.75rem;
}
.nav-link:hover {
    background-color: #334155;
    color: #ffffff;
}
.nav-link.active {
    background-color: #2563eb;
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 20%;
    padding: 0.25rem 0;
    transition: color 0.15s;
}

.kpi-card {
    background-color: #1e293b;
    border: 1px solid #334155;
    border-radius: 1rem;
    padding: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.shortcut-card {
    background-color: #1e293b;
    border: 1px solid #334155;
    border-radius: 1rem;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: all 0.2s;
}
.shortcut-card:hover {
    border-color: #3b82f6;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

/* Big Touch Buttons for iPhone / Driver */
.btn-touch {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 1.125rem 1.25rem;
    border-radius: 1.25rem;
    color: #ffffff;
    gap: 1rem;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 6px 16px -2px rgba(0, 0, 0, 0.3);
}
.btn-touch:active {
    transform: scale(0.97);
}

/* Print Styles for A4 Japanese Nippo Form */
@media print {
    .no-print, header, nav, aside {
        display: none !important;
    }
    body {
        background-color: #ffffff !important;
        color: #000000 !important;
        padding: 0 !important;
    }
    .print-area {
        border: none !important;
        box-shadow: none !important;
        max-width: 100% !important;
        padding: 0 !important;
    }
}