/* =========================================================
   好物推薦網 — coupons.css
   優惠碼列表頁專用樣式：Page Header、篩選列、優惠碼卡片、
   複製互動、分頁、Responsive
   ========================================================= */

/* ===== PAGE HEADER ===== */
.coupons-header {
    background: linear-gradient(160deg, #2d5a3d 0%, var(--color-primary) 40%, var(--color-primary-light) 100%);
    color: #fff;
    padding: 6.5rem 0 3rem;
    position: relative;
    overflow: hidden;
}

.coupons-header::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(249, 166, 32, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.coupons-header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(138, 181, 152, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.coupons-header h1 {
    font-size: 2.25rem;
    font-weight: 400;
    color: #fff;
    margin-bottom: 0.5rem;
}

.coupons-header p {
    font-size: 1.05rem;
    opacity: 0.9;
    max-width: 480px;
}

.coupons-header-stats {
    display: flex;
    gap: 2rem;
    margin-top: 1.5rem;
}

.coupons-header-stats .stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.92rem;
    opacity: 0.9;
}

.coupons-header-stats .stat i {
    font-size: 1.1rem;
    color: var(--color-cta);
}

/* ===== FILTER BAR ===== */
.filter-bar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 60px;
    z-index: 1020;
    box-shadow: var(--shadow-sm);
}

.filter-bar-inner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-search {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 360px;
}

.filter-search input {
    width: 100%;
    padding: 0.6rem 1rem 0.6rem 2.5rem;
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.9rem;
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.filter-search input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 124, 89, 0.1);
}

.filter-search input::placeholder {
    color: var(--color-text-muted);
}

.filter-search i {
    position: absolute;
    left: 0.9rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

.filter-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-tag {
    padding: 0.45rem 1rem;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-body);
    white-space: nowrap;
}

.filter-tag:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(74, 124, 89, 0.06);
}

.filter-tag.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.filter-result-count {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-left: auto;
    white-space: nowrap;
}

/* ===== COUPON GRID ===== */
.coupons-grid {
    padding: 2.5rem 0 4rem;
}

/* ===== COUPON CARD ===== */
.coupon-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}

.coupon-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.coupon-card-top {
    padding: 1.25rem 1.25rem 0.75rem;
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
}

.coupon-store-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.coupon-store-info {
    flex: 1;
    min-width: 0;
}

.coupon-store-name {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-bottom: 0.2rem;
}

.coupon-title {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.98rem;
    line-height: 1.4;
    margin-bottom: 0;
    color: var(--color-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.coupon-discount-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 0.3rem 0.65rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    background: var(--color-accent);
    line-height: 1;
}

.coupon-discount-badge.percent {
    background: var(--color-accent);
}

.coupon-discount-badge.fixed {
    background: var(--color-primary);
}

.coupon-discount-badge.free-ship {
    background: var(--color-cta-dark);
}

/* ===== COUPON CODE SECTION ===== */
.coupon-code-section {
    padding: 0 1.25rem;
    margin-top: 0.5rem;
}

.coupon-code-box {
    background: #fef8ec;
    border: 1.5px dashed var(--color-cta);
    border-radius: 10px;
    padding: 0.65rem 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.coupon-code-box:hover {
    background: #fdf0d5;
    border-color: var(--color-cta-dark);
}

.coupon-code-box.copied {
    background: rgba(74, 124, 89, 0.08);
    border-color: var(--color-primary);
}

.coupon-code-text {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--color-cta-dark);
    letter-spacing: 1px;
    font-family: var(--font-body);
}

.coupon-code-box.copied .coupon-code-text {
    color: var(--color-primary);
}

.coupon-copy-btn {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-cta-dark);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font-family: var(--font-body);
    white-space: nowrap;
}

.coupon-code-box.copied .coupon-copy-btn {
    color: var(--color-primary);
}

/* ===== COUPON CARD FOOTER ===== */
.coupon-card-footer {
    padding: 0.75rem 1.25rem 1.25rem;
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.coupon-meta {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.coupon-expiry {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.coupon-expiry.expiring-soon {
    color: var(--color-accent);
    font-weight: 600;
}

.coupon-category-tag {
    font-size: 0.72rem;
    color: var(--color-primary);
    background: rgba(74, 124, 89, 0.08);
    padding: 0.15rem 0.5rem;
    border-radius: 50px;
    font-weight: 500;
    display: inline-block;
}

.coupon-go-btn {
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
    text-decoration: none;
}

.coupon-go-btn:hover {
    background: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-1px);
}

/* ===== EMPTY STATE ===== */
.coupons-empty {
    text-align: center;
    padding: 4rem 1rem;
}

.coupons-empty-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(74, 124, 89, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    font-size: 2rem;
    color: var(--color-primary-light);
}

.coupons-empty h5 {
    font-family: var(--font-heading);
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.coupons-empty p {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

/* ===== PAGINATION ===== */
.pagination-wrap {
    display: flex;
    justify-content: center;
    margin-top: 2.5rem;
    overflow: visible;
}

.pagination-list {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    list-style: none;
    padding: 4px;
    margin: 0;
    overflow: visible;
}

.page-item .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.5rem;
    border-radius: 10px !important;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: 0 !important;
}

.page-item .page-link:hover {
    background: rgba(74, 124, 89, 0.08);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.page-item.active .page-link {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    cursor: default;
}

.page-item.active .page-link:hover {
    background: var(--color-primary);
    color: #fff;
}

.page-item.disabled .page-link {
    color: var(--color-border);
    cursor: default;
    pointer-events: none;
    background: var(--color-bg);
    border-color: var(--color-border);
}

.page-ellipsis {
    border: none !important;
    background: transparent !important;
    cursor: default !important;
    color: var(--color-text-muted) !important;
    min-width: 32px;
    letter-spacing: 2px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 991.98px) {
    .coupons-header {
        padding: 5.5rem 0 2.5rem;
        text-align: center;
    }

    .coupons-header p {
        margin: 0 auto;
    }

    .coupons-header-stats {
        justify-content: center;
    }

    .filter-bar {
        top: 56px;
    }

    .filter-result-count {
        width: 100%;
        text-align: center;
        margin-left: 0;
        margin-top: 0.25rem;
    }
}

@media (max-width: 767.98px) {
    .coupons-header h1 {
        font-size: 1.75rem;
    }

    .coupons-header-stats {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
    }

    .filter-bar-inner {
        gap: 0.5rem;
    }

    .filter-search {
        max-width: 100%;
        flex-basis: 100%;
    }

    .filter-tags {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 2px;
    }

    .filter-tags::-webkit-scrollbar {
        display: none;
    }

    .coupons-grid {
        padding: 1.5rem 0 3rem;
    }
}

@media (max-width: 575.98px) {
    .coupon-card-top {
        padding: 1rem 1rem 0.5rem;
    }

    .coupon-code-section {
        padding: 0 1rem;
    }

    .coupon-card-footer {
        padding: 0.65rem 1rem 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 0.65rem;
    }

    .coupon-card-footer .coupon-meta {
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
    }

    .coupon-go-btn {
        justify-content: center;
    }

    .page-item .page-link {
        min-width: 36px;
        height: 36px;
        font-size: 0.82rem;
        border-radius: 8px;
    }

    .pagination-list {
        gap: 0.25rem;
    }
}