:root {
    --primary-color: #0076b2;
    --secondary-color: #f8f9fa;
    --accent-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --dark-color: #343a40;
    --light-color: #ffffff;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --border-radius: 8px;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: #f5f6fa;
    color: var(--dark-color);
    line-height: 1.6;
}

.navbar-custom {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e3a8a 100%);
    box-shadow: var(--shadow);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--light-color) !important;
}

.navbar-nav .nav-link {
    color: rgba(255,255,255,0.9) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255,255,255,0.1);
    color: var(--light-color) !important;
}

.navbar-nav .nav-link.active {
    background-color: rgba(255,255,255,0.2);
    color: var(--light-color) !important;
}

.main-container {
    min-height: calc(100vh - 80px);
    padding: 2rem 0;
}

.card-custom {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    background: var(--light-color);
    margin-bottom: 2rem;
}

.card-header-custom {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e3a8a 100%);
    color: var(--light-color);
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    padding: 1.25rem;
    border: none;
}

.btn-primary-custom {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e3a8a 100%);
    border: none;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(44, 90, 160, 0.3);
}

.btn-success-custom {
    background: linear-gradient(135deg, var(--accent-color) 0%, #20c997 100%);
    border: none;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-success-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.form-control-custom {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    transition: all 0.3s ease;
}

.form-control-custom:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(44, 90, 160, 0.25);
}

.alert-custom {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
}

.progress-custom {
    height: 8px;
    border-radius: 10px;
    background-color: var(--secondary-color);
}

.progress-bar-custom {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 10px;
}

.sidebar {
    background: var(--light-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.sidebar-item {
    padding: 0.75rem 1rem;
    margin: 0.25rem 0;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    cursor: pointer;
}

.sidebar-item:hover {
    background-color: var(--secondary-color);
}

.sidebar-item.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e3a8a 100%);
    color: var(--light-color);
}

.footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 2rem 0;
    margin-top: 3rem;
}

.business-card-preview {
    width: 300px;
    height: 180px;
    background: var(--light-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin: 1rem auto;
    position: relative;
    overflow: hidden;
}

.loading-spinner {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 9999;
}

.spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .main-container {
        padding: 1rem 0;
    }

    .navbar-nav {
        text-align: center;
        margin-top: 1rem;
    }

    .business-card-preview {
        width: 250px;
        height: 150px;
    }
}