/* JP-BUY 前台樣式 - 日系極簡黑白風格 */

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

:root {
    --bg-main: #FFFFFF;
    --bg-secondary: #F7F7F7;
    --bg-tertiary: #F0F0F0;
    --text-main: #1A1A1A;
    --text-secondary: #555555;
    --text-light: #999999;
    --border: #E0E0E0;
    --hover: #333333;
    --success: #2D8C5A;
    --warning: #B8860B;
    --error: #C0392B;
    --info: #4A6FA5;
}

body {
    font-family: "Noto Sans TC", "Noto Sans JP", -apple-system, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-main);
    background: var(--bg-main);
}

/* ========================================
   導航列
   ======================================== */
.navbar {
    background: var(--bg-main);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.navbar-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    gap: 32px;
    list-style: none;
}

.navbar-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.15s;
}

.navbar-nav a:hover {
    color: var(--text-main);
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* ========================================
   容器與佈局
   ======================================== */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-wide {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 64px 0;
}

/* ========================================
   Hero區
   ======================================== */
.hero {
    text-align: center;
    padding: 80px 24px;
    background: var(--bg-secondary);
}

.hero-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-cta {
    display: inline-flex;
    gap: 16px;
}

/* ========================================
   按鈕
   ======================================== */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-primary {
    background: var(--text-main);
    color: var(--bg-main);
}

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

.btn-secondary {
    background: var(--bg-main);
    color: var(--text-main);
    border: 1px solid var(--text-main);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
}

/* ========================================
   卡片
   ======================================== */
.card {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 32px;
    margin-bottom: 24px;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-main);
}

.card-body {
    color: var(--text-secondary);
}

/* ========================================
   表單
   ======================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: border-color 0.15s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--text-main);
    box-shadow: 0 0 0 2px rgba(26, 26, 26, 0.08);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

/* ========================================
   格線
   ======================================== */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* ========================================
   狀態標籤
   ======================================== */
.badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 12px;
}

.badge-success {
    background: #E8F5E9;
    color: var(--success);
}

.badge-warning {
    background: #FFF9E6;
    color: var(--warning);
}

.badge-info {
    background: #E3F2FD;
    color: var(--info);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 32px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-light);
}

/* ========================================
   訊息提示
   ======================================== */
.alert {
    padding: 16px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-success {
    background: #E8F5E9;
    color: var(--success);
    border: 1px solid var(--success);
}

.alert-error {
    background: #FFEBEE;
    color: var(--error);
    border: 1px solid var(--error);
}

/* ========================================
   工具類
   ======================================== */
.text-center { text-align: center; }
.text-muted { color: var(--text-light); }
.mt-3 { margin-top: 24px; }
.mb-3 { margin-bottom: 24px; }

/* ========================================
   響應式
   ======================================== */
@media (max-width: 768px) {
    .navbar-nav {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-main);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
    }
    
    .navbar-nav.open {
        display: flex;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}