:root {
    --body-bg: #e9ecef;
    --container-bg: #ffffff;
    --card-bg: #efefef;
    --text-color: #212529;
    --accent-color: #956d30;
    --border-color: #e0e0e0;
}

[data-theme="dark"] {
    --body-bg: #e9ecef;
    --container-bg: #3e3e3e;
    --card-bg: #2f2f2f;
    --text-color: #e0e0e0;
    --accent-color: #956d30;
    --border-color: #333333;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--body-bg);
    color: var(--text-color);
    line-height: 1.5;
    padding: 2rem 1rem;
    transition: background-color 0.3s ease;
    min-height: 100vh;
}

.page-wrapper {
    max-width: 620px;
    margin: 0 auto;
    background-color: var(--container-bg);
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    overflow: hidden;
    min-height: calc(100vh - 4rem);
}

.content {
    padding: 2.5rem 2rem;
}

.header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo {
    width: 256px;
    height: 256px;
    margin: 0 auto 0;
    background-image: url('/images/tlogoV2_c.png');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

h1 {
    font-size: 2.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 420px;
    margin: 0 auto 2rem;
}

[data-theme="dark"] .subtitle {
    color: #aaa;
}

.social-main {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.social-main a {
    font-size: 1.75rem;
    color: var(--text-color);
    transition: transform 0.2s ease;
}

.social-main a:hover {
    transform: scale(1.15);
}

.groups-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.group-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    gap: 1rem;
}

.group-card:hover {
    /* transform: translateY(-2px); */
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.42);
}

.avatar {
    width: 90px;
    height: 90px;
    border-radius: 25px;
    flex-shrink: 0;
    background-size: cover;
    background-position: center;
    border: 3px solid var(--accent-color);
    transition: transform 0.2s;
}
.avatar-link:hover .avatar {transform: scale(1.05);}

.card-content {flex: 1;}
.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.card-subtitle {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 1rem;
}

[data-theme="dark"] .card-subtitle {
    color: #aaa;
}

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

.card-social {
    display: flex;
    gap: 1rem;
}

.card-social a {
    font-size: 1.4rem;
    color: var(--text-color);
    transition: color 0.2s ease;
}

.card-social a:hover {
    color: var(--accent-color);
}

.contact-info {
    font-size: 0.95rem;
    color: #555;
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

[data-theme="dark"] .contact-info {
    color: #bbb;
}

.contact-info a {
    color: var(--accent-color);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--container-bg);
    border: 2px solid var(--border-color);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    cursor: pointer;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

@media (max-width: 480px) {
    body {padding: 1rem;}
    .page-wrapper {border-radius: 20px;min-height: calc(100vh - 2rem);}
    .content {padding: 2rem 1.25rem;}
    .logo {width: 128px;height: 128px;font-size: 2rem;}
    .group-card {padding: 1.1rem 1.25rem;}
    .avatar {width: 52px;height: 52px;}
    .contact-info {flex-direction: column;gap: 0.5rem;}
}

.footer {
    text-align: center;
    margin-top: 3rem;
    font-size: 0.9rem;
    color: #888;
    padding-bottom: 1.5rem;
}