/* ============================== */
/* 🧩 基本排版設定 */
/* ============================== */
body {
    padding-top: 1rem;
}
form button {
    background-color: #0077cc;
    color: white;
}

/* ============================== */
/* 🧭 導覽列設計 */
/* ============================== */
nav.container-fluid {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1.2rem;
}
.nav-left {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.logo {
    height: 60px;
    width: auto;
}
.brand-text {
    line-height: 1.1;
}
.brand-text strong {
    font-size: 1.1rem;
    display: block;
}
.brand-text span {
    font-size: 0.9rem;
    color: #333;
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0;
    padding: 0;
}
.nav-right li {
    list-style: none;
}
.nav-right a {
    font-size: 0.95rem;
    padding: 0.4rem 0.8rem;
}

/* ============================== */
/* ❄️ Hero 區塊（主視覺） */
/* ============================== */
.hero {
    position: relative;
    text-align: center;
    padding: 5rem 1rem;
    border-radius: 12px;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, #E8F9FF 0%, #F3FFF9 100%);
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url('../images/ice-pattern.svg') center/cover no-repeat;
    opacity: 0.4;
    z-index: 0;
}
.hero h1, .hero p, .hero .cta-btn {
    position: relative;
    z-index: 1;
}
.hero h1 {
    color: #0077cc;
    font-weight: 700;
}
.hero p {
    color: #444;
    max-width: 600px;
    margin: 1rem auto;
}
.cta-btn {
    background-color: #4DB6E2;
    color: white;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
}
.cta-btn:hover {
    background-color: #3CA4D0;
}

/* ============================== */
/* 🧊 冰箱產品展示區 */
/* ============================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    align-items: start;
}
.product-grid figure {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    padding: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.product-grid figure:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.12);
}

/* 冰箱圖片與文字 */
figure.fridge {
    position: relative;
    height: 420px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
figure.fridge img {
    width: 100%;
    max-height: 350px;
    object-fit: contain;
    cursor: pointer;
    display: block;
    margin: auto;
}
figure.fridge figcaption {
    text-align: center;
    margin-top: auto;
    padding-top: 0.5rem;
}
figure.fridge img:hover {
    transform: scale(1.03);
    transition: transform 0.3s ease;
}
figure.fridge figcaption a:hover {
    color: #0077cc;
    text-decoration: underline;
}
.info-banner {
  background-color: #f4faff;
  color: #0077cc;
  text-align: center;
  padding: 0.8rem;
  border-radius: 6px;
  font-size: 0.95rem;
  margin-top: 1rem;
}

/* ============================== */
/* 📦 各區背景分色 */
/* ============================== */
#products {
    background: linear-gradient(180deg, #ffffff 0%, #f9fbfc 100%);
    padding: 3rem 0;
}
#process {
    background:
      url('../images/lines-pattern.svg') repeat,
      linear-gradient(180deg, #f7f9fa 0%, #ffffff 100%);
    background-size: 200px;
    padding: 4rem 0;
    border-top: 1px solid #e6e6e6;
    border-bottom: 1px solid #e6e6e6;
    opacity: 0.98;
}
#appointment {
    background: linear-gradient(135deg, #e0f7ff, #f4fffb);
    border-top: 2px solid #cce7f0;
    padding: 4rem 0;
}
#subscribe {
    background: linear-gradient(135deg, #EAF9F2 0%, #F9FFFD 100%);
    border-top: 1px solid #d6efe2;
    padding: 4rem 0;
}

/* ============================== */
/* ⚙️ Footer */
/* ============================== */
footer.container {
    margin-top: 3rem;
    border-top: 1px solid #e2e2e2;
    padding-top: 1rem;
    text-align: center;
    color: #555;
}
footer.container a {
    color: #0077cc;
    text-decoration: none;
}
footer.container a:hover {
    text-decoration: underline;
}

/* ============================== */
/* 📱 行動裝置優化 (Mobile Responsive) */
/* ============================== */
@media (max-width: 768px) {

  /* 導覽列重新排列 */
  nav.container-fluid {
    padding: 0.5rem 1rem;
  }
  .logo {
    height: 50px;
  }
  .brand-text strong {
    font-size: 1rem;
  }
  .brand-text span {
    font-size: 0.8rem;
  }

  /* Hero 區塊縮排、背景透明度 */
  .hero {
    padding: 3rem 1.5rem;
  }
  .hero::before {
    opacity: 0.35;
  }
  .hero h1 {
    font-size: 1.6rem;
    line-height: 1.3;
  }
  .hero p {
    font-size: 1rem;
  }
  .cta-btn {
    display: inline-block;
    width: 100%;
    max-width: 250px;
  }

  /* 商品卡片改為一欄 */
  .product-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  figure.fridge {
    height: auto;
  }
  figure.fridge img {
    max-height: 250px;
  }

  /* 租賃流程修正 */
  #process {
    padding: 2rem 1rem;
  }
  #process ol {
    margin-left: 0;
    padding-left: 1rem;
    font-size: 1rem;
  }

  /* 表單區塊更易點擊 */
  form.grid input,
  form.grid button {
    width: 100%;
    font-size: 1rem;
  }

  /* Footer 文字置中且字體稍大 */
  footer.container {
    font-size: 0.9rem;
    line-height: 1.5;
  }
}

/* ============================== */
/* 📱 浮動行動按鈕（Mobile CTA） */
/* ============================== */
.mobile-cta {
  display: none; /*預設隱藏*/
}
@media screen and (max-width: 768px) {
  .mobile-cta {
    display: block;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #4DB6E2;
    color: white;
    padding: 0.9rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    z-index: 2000;
    text-decoration: none;
  }

  .mobile-cta:hover {
    background-color: #3CA4D0;
  }
}
/* ============================== */
/* 📝 Order Form Styles (Mobile-first, touch-friendly) */
/* ============================== */
.form-container {
    max-width: 600px;
    margin: 2rem auto;
    padding: 2rem;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.form-container hgroup {
    margin-bottom: 2rem;
    text-align: center;
}

form fieldset {
    margin-bottom: 1.5rem;
    padding: 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background: #fafafa;
}

form legend {
    font-weight: 600;
    color: #333;
    padding: 0 0.5rem;
}

.radio-label {
    display: block;
    padding: 0.8rem 1rem;
    margin-bottom: 0.5rem;
    background: white;
    border: 1px solid #ddd;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.radio-label:hover {
    background: #f4faff;
    border-color: #4DB6E2;
}

.radio-label input[type="radio"] {
    margin-right: 0.5rem;
    transform: scale(1.2);
}

.large-input, .large-select, .large-textarea {
    padding: 1rem;
    font-size: 1.05rem;
    border-radius: 8px;
    border: 1px solid #ddd;
    margin-bottom: 1.5rem;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.2rem;
    font-weight: bold;
    background-color: #4DB6E2;
    border: none;
    border-radius: 8px;
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(77, 182, 226, 0.3);
    margin-top: 1rem;
}

.submit-btn:hover {
    background-color: #3CA4D0;
}

.success-message {
    text-align: center;
    padding: 3rem 2rem;
    background: #e8f9ff;
    border-radius: 12px;
    border: 2px solid #4DB6E2;
    margin-bottom: 2rem;
}

.success-message h4 {
    color: #0077cc;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.success-message p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .form-container {
        padding: 1.5rem 1rem;
        margin: 1rem auto;
        border-radius: 0;
        box-shadow: none;
    }
    
    .radio-label {
        padding: 1rem;
        font-size: 1.1rem;
    }
    
    form legend, label {
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
    }
}

/* ============================== */
/* ✅ Legal Checkbox (Order Form)  */
/* ============================== */
.legal-check-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin: 1.2rem 0 0.5rem;
  padding: 1rem;
  background: #f4faff;
  border-radius: 8px;
  border: 1px solid #cce7f0;
}
.legal-check-row input[type="checkbox"] {
  margin-top: 0.2rem;
  transform: scale(1.3);
  flex-shrink: 0;
}
.legal-check-row label {
  cursor: pointer;
  line-height: 1.6;
  margin: 0;
}
.legal-check-row a {
  color: #0077cc;
}
.legal-warning {
  display: none;
  color: #c0392b;
  font-size: 0.88rem;
  margin: 0.3rem 0 0.8rem;
}

/* ============================== */
/* 🌙 Dark Mode Overrides         */
/* ============================== */
@media (prefers-color-scheme: dark) {

  /* --- Navbar --- */
  nav.container-fluid {
    background-color: rgba(20, 20, 30, 0.92);
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  }
  .brand-text span {
    color: #aaa;
  }

  /* --- Hero --- */
  .hero {
    background: linear-gradient(135deg, #0d2a3a 0%, #0d2e21 100%);
  }
  .hero h1 {
    color: #4DB6E2;
  }
  .hero p {
    color: #ccc;
  }

  /* --- Section backgrounds --- */
  #products {
    background: linear-gradient(180deg, #111 0%, #151515 100%);
  }
  #process {
    background: linear-gradient(180deg, #151515 0%, #111 100%);
    border-top-color: #2a2a2a;
    border-bottom-color: #2a2a2a;
  }
  #appointment {
    background: linear-gradient(135deg, #0d2233, #0d2a1e);
    border-top-color: #1a3a4a;
  }
  #subscribe {
    background: linear-gradient(135deg, #111f19 0%, #0d1a14 100%);
    border-top-color: #1a3328;
  }

  /* --- Product cards --- */
  .product-grid figure {
    background-color: #1e1e2e;
    box-shadow: 0 3px 10px rgba(0,0,0,0.4);
  }

  /* --- Info banner --- */
  .info-banner {
    background-color: #0d2033;
    color: #4DB6E2;
  }

  /* --- Footer --- */
  footer.container {
    color: #aaa;
    border-top-color: #2a2a2a;
  }

  /* --- Order / Agreement form container --- */
  .form-container {
    background: #1a1a2e;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
  }

  /* --- Fieldsets inside form --- */
  form fieldset {
    background: #111120;
    border-color: #2a2a3a;
  }
  form legend {
    color: #ccc;
  }

  /* --- Radio labels --- */
  .radio-label {
    background: #1e1e30;
    border-color: #333;
    color: #ddd;
  }
  .radio-label:hover {
    background: #0d2033;
    border-color: #4DB6E2;
  }

  /* --- Success message --- */
  .success-message {
    background: #0d2033;
    border-color: #4DB6E2;
  }
  .success-message h4 {
    color: #4DB6E2;
  }

  /* --- Legal checkbox row --- */
  .legal-check-row {
    background: #0d2033;
    border-color: #1a3a4a;
  }
  .legal-check-row a {
    color: #4DB6E2;
  }

  /* --- Submit button color stays the same (already fine) --- */
}