/* ================================
   Support Page - Mobile First
   ================================ */

/* Top Navigation */
.support-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: white;
    border-bottom: 1px solid #E5E7EB;
    position: sticky;
    top: 0;
    z-index: 50;
}

.support-nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: #111828;
    font-weight: 600;
    font-size: 1rem;
    transition: opacity 0.2s ease;
}

.support-nav-logo:hover {
    opacity: 0.75;
    color: #111828;
}

.support-nav-logo img {
    object-fit: contain;
}

.support-nav-back {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    text-decoration: none;
    color: #4A5565;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

.support-nav-back:hover {
    color: #65C2C9;
}

/* Hero */
.support-hero {
    background: #EBFCF9;
    padding: 3rem 1.25rem;
    text-align: center;
}

.support-hero-inner {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.support-hero-badge {
    display: inline-block;
    background: white;
    color: #2B9592;
    padding: 0.3rem 0.8rem;
    border-radius: 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.support-hero-title {
    font-size: 1.9rem;
    line-height: 1.4;
    color: #111828;
    margin: 0;
    font-weight: 300;
}

.support-hero-title span {
    color: #65C2C9;
}

.support-hero-description {
    color: #576371;
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

.support-cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #65C2C9;
    color: white;
    text-decoration: none;
    padding: 0.85rem 1.5rem;
    border-radius: 0.7rem;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 12px rgba(101, 194, 201, 0.35);
    transition: all 0.3s ease;
    margin-top: 0.5rem;
}

.support-cta-button:hover {
    background: #5BB5BC;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(101, 194, 201, 0.45);
}

/* Section common (overrides for support page) */
.contact-section,
.faq-section,
.trouble-section,
.legal-section {
    padding: 3rem 1rem;
    scroll-margin-top: 64px;
}

.faq-section {
    background: #F8F9FB;
}

.legal-section {
    background: #F8F9FB;
    padding-bottom: 2.5rem;
}

.section-title {
    text-align: center;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.section-title h2 {
    font-size: 1.6rem;
    color: #111828;
    margin-bottom: 0.5rem;
    font-weight: 300;
}

.section-title p {
    color: #4A5565;
    font-size: 1rem;
    margin: 0;
}

/* Contact panel (single address, optional subject presets) */
.contact-panel {
    max-width: 560px;
    margin: 0 auto;
    padding: 1.75rem 1.5rem;
    border-radius: 0.7rem;
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.08);
    background: white;
    text-align: center;
}

.contact-panel-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border-radius: 0.7rem;
    background: #5BB5BC;
    color: white;
    margin-bottom: 1rem;
}

.contact-panel-heading {
    color: #111828;
    font-size: 1.15rem;
    margin: 0 0 0.75rem;
    font-weight: 500;
}

.contact-panel-lead {
    color: #4A5565;
    font-size: 0.9rem;
    line-height: 1.65;
    margin: 0 0 1.25rem;
    text-align: left;
}

.contact-panel-email {
    display: inline-block;
    color: #2B9592;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    word-break: break-all;
    padding: 0.65rem 1.25rem;
    border-radius: 0.7rem;
    border: 2px solid #65C2C9;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.contact-panel-email:hover {
    background: #EBFCF9;
    color: #2B9592;
    transform: translateY(-2px);
}

.contact-panel-subject-label {
    margin: 1.5rem 0 0.75rem;
    font-size: 0.8rem;
    color: #576371;
}

.contact-subject-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 0.75rem;
}

.contact-subject-links a {
    display: inline-block;
    font-size: 0.85rem;
    color: #2B9592;
    text-decoration: none;
    padding: 0.35rem 0.65rem;
    border-radius: 0.5rem;
    background: #F8FCFC;
    border: 1px solid rgba(101, 194, 201, 0.35);
    transition: background 0.2s ease, border-color 0.2s ease;
}

.contact-subject-links a:hover {
    background: #EBFCF9;
    border-color: #65C2C9;
    color: #217a7f;
}

.contact-meta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    padding: 0 1rem;
}

.contact-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #576371;
    font-size: 0.85rem;
}

.contact-meta-item svg {
    flex-shrink: 0;
    color: #65C2C9;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-item {
    background: white;
    border-radius: 0.7rem;
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.faq-item[open] {
    box-shadow: 0 0 16px 0 rgba(101, 194, 201, 0.18);
}

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    cursor: pointer;
    list-style: none;
    color: #111828;
    font-weight: 500;
    font-size: 0.95rem;
    transition: background 0.2s ease;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::marker {
    display: none;
}

.faq-item summary:hover {
    background: #F8FCFC;
}

.faq-question {
    flex: 1;
    line-height: 1.5;
}

.faq-chevron {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #65C2C9;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item[open] .faq-chevron {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.25rem 1.25rem;
    border-top: 1px solid #F0F2F5;
    padding-top: 1rem;
}

.faq-answer p {
    color: #4A5565;
    font-size: 0.9rem;
    line-height: 1.7;
    margin: 0;
}

.faq-answer a {
    color: #2B9592;
    font-weight: 600;
    text-decoration: none;
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* Troubleshooting cards */
.trouble-cards {
    padding: 0 5%;
}

.trouble-card {
    padding: 1.5rem;
    border-radius: 0.7rem;
    gap: 0.5rem;
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    background: white;
    height: 100%;
}

.trouble-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.15);
}

.trouble-card-icon {
    width: fit-content;
    padding: 10px;
    border-radius: 0.7rem;
    color: white;
}

.trouble-cards .col-12:nth-child(1) .trouble-card-icon {
    background: #2B9592;
}

.trouble-cards .col-12:nth-child(2) .trouble-card-icon {
    background: #5BB5BC;
}

.trouble-cards .col-12:nth-child(3) .trouble-card-icon {
    background: #00BBD7;
}

.trouble-card h3 {
    color: #111828;
    font-size: 1.1rem;
    margin: 0.5rem 0;
    font-weight: 500;
}

.trouble-checklist {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.trouble-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    color: #4A5565;
    font-size: 0.9rem;
    line-height: 1.6;
}

.trouble-checklist li svg {
    color: #65C2C9;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

/* Legal links */
.legal-inner {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.legal-inner h2 {
    font-size: 1.3rem;
    color: #111828;
    margin: 0 0 1rem;
    font-weight: 300;
}

.legal-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.legal-links li {
    width: 100%;
    max-width: 360px;
}

.legal-links a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.25rem;
    background: white;
    border-radius: 0.7rem;
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.05);
    color: #111828;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.legal-links a:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 16px 0 rgba(101, 194, 201, 0.18);
    color: #2B9592;
}

.legal-links a svg {
    color: #65C2C9;
    flex-shrink: 0;
}

/* ================================
   Tablet (768px以上)
   ================================ */
@media (min-width: 768px) {
    .support-nav {
        padding: 1rem 2rem;
    }

    .support-nav-logo {
        font-size: 1.1rem;
    }

    .support-nav-back {
        font-size: 0.9rem;
    }

    .support-hero {
        padding: 4rem 2rem;
    }

    .support-hero-title {
        font-size: 2.4rem;
    }

    .support-hero-description {
        font-size: 1rem;
    }

    .support-cta-button {
        padding: 1rem 1.75rem;
        font-size: 1rem;
    }

    .contact-section,
    .faq-section,
    .trouble-section,
    .legal-section {
        padding: 4rem 2rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .section-title p {
        font-size: 1.05rem;
    }

    .trouble-cards {
        padding: 0 8%;
    }

    .contact-panel {
        padding: 2rem 1.75rem;
    }

    .contact-meta {
        flex-direction: row;
        justify-content: center;
        gap: 1.5rem;
    }

    .faq-item summary {
        padding: 1.25rem 1.5rem;
        font-size: 1rem;
    }

    .faq-answer {
        padding: 1rem 1.5rem 1.5rem;
    }

    .legal-inner h2 {
        font-size: 1.5rem;
    }

    .legal-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .legal-links li {
        flex: 0 0 auto;
        max-width: 240px;
    }
}

/* ================================
   Desktop (992px以上)
   ================================ */
@media (min-width: 992px) {
    .support-nav {
        padding: 1rem 5rem;
    }

    .support-hero {
        padding: 5rem 3rem;
    }

    .support-hero-title {
        font-size: 2.8rem;
    }

    .support-hero-description {
        font-size: 1.05rem;
    }

    .contact-section,
    .faq-section,
    .trouble-section,
    .legal-section {
        padding: 5rem 3rem;
    }

    .section-title h2 {
        font-size: 2.3rem;
    }

    .trouble-cards {
        padding: 0 10%;
    }

    .contact-panel {
        max-width: 600px;
        padding: 2.25rem 2rem;
    }

    .trouble-card {
        padding: 1.75rem;
    }

    .trouble-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 0 25px 0 rgba(0, 0, 0, 0.18);
    }

    .trouble-card h3 {
        font-size: 1.2rem;
    }

    .trouble-checklist li {
        font-size: 0.95rem;
    }
}

/* ================================
   Large Desktop (1200px以上)
   ================================ */
@media (min-width: 1200px) {
    .support-nav {
        padding: 1rem 8rem;
    }

    .support-hero-title {
        font-size: 3rem;
    }

    .support-hero-description {
        font-size: 1.1rem;
    }

    .section-title h2 {
        font-size: 2.5rem;
    }
}