/* ===================================================
   OmniBiz Commercial Web Application - Stylesheet
   =================================================== */

:root {
    --primary-color: #0f3460;
    --primary-hover: #16213e;
    --accent-color: #e94560;
    --vip-gold: #e5a93c;
    --vip-gradient: linear-gradient(135deg, #fceabb 0%, #f8b500 100%);
    --dark-bg: #1a1a2e;
    --light-bg: #f8fafc;
    --card-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    --card-hover-shadow: 0 15px 35px rgba(15, 52, 96, 0.12);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans TC", sans-serif;
    color: #334155;
    background-color: var(--light-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1 0 auto;
}

/* Header Topbar */
.top-bar {
    background-color: var(--dark-bg);
    color: #94a3b8;
    font-size: 0.85rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.2s ease;
}

.top-bar a:hover {
    color: #ffffff;
}

/* Navbar */
.navbar-brand {
    font-weight: 800;
    font-size: 1.45rem;
    letter-spacing: -0.5px;
    color: var(--primary-color) !important;
}

.navbar-brand span {
    color: var(--accent-color);
}

.nav-link {
    font-weight: 500;
    color: #475569 !important;
    padding: 0.6rem 1rem !important;
    transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
    font-weight: 600;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #0f3460 0%, #16213e 100%);
    color: #ffffff;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::after {
    content: '';
    position: absolute;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(233,69,96,0.15) 0%, rgba(233,69,96,0) 70%);
    top: -50px;
    right: 5%;
    border-radius: 50%;
    pointer-events: none;
}

/* Commercial Cards */
.biz-card {
    border: none;
    border-radius: 1rem;
    background: #ffffff;
    box-shadow: var(--card-shadow);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    overflow: hidden;
}

.biz-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
}

.product-img-wrapper {
    height: 220px;
    position: relative;
    overflow: hidden;
    background-color: #f1f5f9;
}

.product-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.biz-card:hover .product-img-wrapper img {
    transform: scale(1.05);
}

.vip-badge {
    background: var(--vip-gradient);
    color: #451a03;
    font-weight: 700;
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    box-shadow: 0 2px 6px rgba(245, 158, 11, 0.3);
}

.vip-price-tag {
    color: #b45309;
    font-weight: 700;
    font-size: 1.15rem;
}

/* Features Box */
.feature-box {
    padding: 2.5rem 1.5rem;
    border-radius: 1rem;
    background: #ffffff;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.feature-box:hover {
    transform: translateY(-6px);
    border-color: #cbd5e1;
    box-shadow: var(--card-hover-shadow);
}

.feature-icon-circle {
    width: 68px;
    height: 68px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.85rem;
    margin-bottom: 1.25rem;
}

/* Footer */
footer {
    background-color: var(--dark-bg);
    color: #94a3b8;
    margin-top: auto;
}

footer a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: #ffffff;
}

/* Member & Admin Forms */
.auth-card {
    max-width: 460px;
    margin: 3.5rem auto;
    border: none;
    border-radius: 1.25rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(15, 52, 96, 0.15);
}

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

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

.btn-accent {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #ffffff;
}

.btn-accent:hover {
    background-color: #d1334e;
    color: #ffffff;
}

/* Badge Tweaks */
.badge {
    padding: 0.45em 0.7em;
    font-weight: 600;
}