/* =====================================================
   胖大喵 Pandacat Landing Page - 樣式表
   ===================================================== */

/* ----- CSS 變數定義 ----- */
:root {
    /* 色彩系統 */
    --color-cream: #FAF6EE;
    --color-orange: #F57C40;
    --color-orange-hover: #e06b2f;
    --color-brown: #3B2B22;
    --color-light-gray: #E8E4DD;
    --color-white: #FFFFFF;

    /* 字體 */
    --font-family: 'Noto Sans TC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* 間距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* 圓角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    /* 陰影 */
    --shadow-sm: 0 2px 8px rgba(59, 43, 34, 0.08);
    --shadow-md: 0 4px 16px rgba(59, 43, 34, 0.12);
    --shadow-lg: 0 8px 32px rgba(59, 43, 34, 0.16);

    /* 過渡效果 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* 容器最大寬度 */
    --container-max: 1200px;
    --container-narrow: 800px;
}

/* ----- Reset & 基礎樣式 ----- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-cream);
    color: var(--color-brown);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul,
ol {
    list-style: none;
}

/* ----- 容器 ----- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container--narrow {
    max-width: var(--container-narrow);
}

/* ----- 區塊間距 ----- */
.section {
    padding: var(--spacing-3xl) 0;
}

.section--alt {
    background-color: var(--color-white);
}

.section__title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-brown);
}

.section__subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: var(--color-brown);
    opacity: 0.8;
    margin-bottom: var(--spacing-lg);
}

/* =====================================================
   Header 導航列
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(250, 246, 238, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-sm);
}

.header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.header__logo img {
    height: 48px;
    width: auto;
}

.header__nav {
    display: none;
}

.header__nav-list {
    display: flex;
    gap: var(--spacing-lg);
}

.header__nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-brown);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-orange);
    transition: width var(--transition-normal);
}

.header__nav-link:hover::after {
    width: 100%;
}

.header__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background-color: var(--color-orange);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    transition: background-color var(--transition-fast);
}

.header__cta:hover {
    background-color: var(--color-orange-hover);
}

/* 手機選單按鈕 */
.header__mobile-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-xs);
}

.header__mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-brown);
    transition: var(--transition-fast);
}

/* 手機選單 */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-cream);
    padding: var(--spacing-lg);
    z-index: 999;
}

.mobile-nav.is-active {
    display: block;
}

.mobile-nav__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mobile-nav__link {
    display: block;
    font-size: 1.125rem;
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-light-gray);
}

/* 桌面版導航 */
@media (min-width: 768px) {
    .header__nav {
        display: block;
    }

    .header__mobile-toggle {
        display: none;
    }
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(135deg, var(--color-cream) 0%, #FFF8F0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(245, 124, 64, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero__content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero__badge {
    display: inline-block;
    background-color: rgba(245, 124, 64, 0.15);
    color: var(--color-orange);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.hero__title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--color-brown);
}

.hero__title span {
    color: var(--color-orange);
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--color-brown);
    opacity: 0.85;
    margin-bottom: var(--spacing-lg);
}

.hero__cta-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.hero__image {
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.hero__image img {
    max-width: 320px;
    filter: drop-shadow(0 20px 40px rgba(59, 43, 34, 0.15));
}

/* 社群連結 */
.hero__social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.hero__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hero__social-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.hero__social-link svg {
    width: 24px;
    height: 24px;
    fill: var(--color-brown);
}

/* 桌面版 Hero */
@media (min-width: 768px) {
    .hero__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }

    .hero__content {
        text-align: left;
    }

    .hero__title {
        font-size: 2.75rem;
    }

    .hero__cta-group {
        flex-direction: row;
    }

    .hero__social {
        justify-content: flex-start;
    }

    .hero__image img {
        max-width: 400px;
    }
}

@media (min-width: 1024px) {
    .hero__title {
        font-size: 3.25rem;
    }

    .hero__image img {
        max-width: 480px;
    }
}

/* =====================================================
   按鈕元件
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    text-align: center;
}

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

.btn--primary:hover {
    background-color: var(--color-orange-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--secondary {
    background-color: var(--color-white);
    color: var(--color-brown);
    border: 2px solid var(--color-light-gray);
}

.btn--secondary:hover {
    border-color: var(--color-orange);
    color: var(--color-orange);
}

.btn--outline {
    background-color: transparent;
    color: var(--color-orange);
    border: 2px solid var(--color-orange);
}

.btn--outline:hover {
    background-color: var(--color-orange);
    color: var(--color-white);
}

/* =====================================================
   品牌理念區塊
   ===================================================== */
.values {
    background-color: var(--color-white);
}

.values__intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    font-size: 1.125rem;
    line-height: 1.8;
}

.values__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.value-card {
    background-color: var(--color-cream);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.value-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    background-color: rgba(245, 124, 64, 0.15);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-card__icon svg {
    width: 32px;
    height: 32px;
    fill: var(--color-orange);
}

.value-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-brown);
}

.value-card__desc {
    font-size: 1rem;
    color: var(--color-brown);
    opacity: 0.8;
    line-height: 1.7;
}

@media (min-width: 768px) {
    .values__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* =====================================================
   商品特色區塊
   ===================================================== */
.products__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.product-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.product-card__image {
    aspect-ratio: 4/3;
    background-color: var(--color-light-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card__content {
    padding: var(--spacing-lg);
}

.product-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-brown);
}

.product-card__features {
    margin-bottom: var(--spacing-md);
}

.product-card__feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9375rem;
    color: var(--color-brown);
}

.product-card__feature::before {
    content: '✓';
    color: var(--color-orange);
    font-weight: 700;
    flex-shrink: 0;
}

.products__cta {
    text-align: center;
}

@media (min-width: 768px) {
    .products__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* =====================================================
   社群與故事區塊
   ===================================================== */
.story {
    background-color: var(--color-white);
}

.story__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.story__image {
    order: -1;
}

.story__image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.story__image-wrapper img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.story__image-frame {
    position: absolute;
    inset: 8px;
    border: 3px dashed var(--color-orange);
    border-radius: var(--radius-md);
    opacity: 0.5;
    pointer-events: none;
}

.story__content {
    text-align: center;
}

.story__label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-orange);
    margin-bottom: var(--spacing-sm);
}

.story__title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-brown);
}

.story__text {
    font-size: 1.0625rem;
    line-height: 2;
    color: var(--color-brown);
    margin-bottom: var(--spacing-lg);
    white-space: pre-line;
}

.story__social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.story__social-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-cream);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-brown);
    transition: all var(--transition-fast);
}

.story__social-btn:hover {
    background-color: var(--color-orange);
    color: var(--color-white);
}

.story__social-btn svg {
    width: 20px;
    height: 20px;
}

@media (min-width: 768px) {
    .story__inner {
        grid-template-columns: 1fr 1fr;
    }

    .story__image {
        order: 0;
    }

    .story__content {
        text-align: left;
    }

    .story__social {
        justify-content: flex-start;
    }
}

/* =====================================================
   FAQ 區塊
   ===================================================== */
.faq__list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-item__question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    color: var(--color-brown);
    background-color: var(--color-white);
    transition: background-color var(--transition-fast);
}

.faq-item__question:hover {
    background-color: var(--color-cream);
}

.faq-item__icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    transition: transform var(--transition-normal);
}

.faq-item__icon svg {
    width: 100%;
    height: 100%;
    fill: var(--color-orange);
}

.faq-item.is-active .faq-item__icon {
    transform: rotate(180deg);
}

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.is-active .faq-item__answer {
    max-height: 500px;
}

.faq-item__answer-inner {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--color-brown);
    opacity: 0.85;
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background-color: var(--color-brown);
    color: var(--color-cream);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__brand {
    text-align: center;
}

.footer__logo {
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.footer__logo img {
    height: 64px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer__tagline {
    font-size: 0.9375rem;
    opacity: 0.8;
}

.footer__links {
    text-align: center;
}

.footer__links-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer__links-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm) var(--spacing-lg);
}

.footer__link {
    font-size: 0.9375rem;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer__link:hover {
    opacity: 1;
}

.footer__social {
    text-align: center;
}

.footer__social-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer__social-list {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: rgba(250, 246, 238, 0.1);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
}

.footer__social-link:hover {
    background-color: var(--color-orange);
}

.footer__social-link svg {
    width: 22px;
    height: 22px;
    fill: var(--color-cream);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(250, 246, 238, 0.15);
}

.footer__copyright {
    font-size: 0.875rem;
    opacity: 0.6;
}

.footer__contact {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
}

.footer__contact a {
    color: var(--color-orange);
}

@media (min-width: 768px) {
    .footer__inner {
        grid-template-columns: 2fr 1fr 1fr;
        text-align: left;
    }

    .footer__brand,
    .footer__links,
    .footer__social {
        text-align: left;
    }

    .footer__links-list,
    .footer__social-list {
        justify-content: flex-start;
    }

    .footer__links-list {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* =====================================================
   工具類別
   ===================================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 淡入動畫 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 延遲動畫 */
.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}