:root {
    --bg: var(--c-bg);
    --card-bg: rgba(255,255,255,0.04);
    --card-border: rgba(255,255,255,0.08);
    --text: var(--c-text3);
    --text-muted:var(--c-muted);
    --accent: #00d4aa;
    --accent-hover: #00f0c0;
    --input-bg: rgba(255,255,255,0.06);
    --input-border: rgba(255,255,255,0.12);
    --danger:var(--c-bad);
}

.light-mode {
    --bg: #f5f5f7;
    --card-bg: rgba(0,0,0,0.03);
    --card-border: rgba(0,0,0,0.08);
    --text: var(--c-bg-alt1);
    --text-muted:var(--c-muted2);
    --input-bg: rgba(0,0,0,0.04);
    --input-border: rgba(0,0,0,0.12);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background:var(--bg);
    color:var(--text);
    min-height: 100vh;
}

.bc-wrap {
    padding: 20px;
    max-width: 720px;
    margin: 0 auto;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0 30px;
}

header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    background:linear-gradient(135deg, var(--accent), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color:transparent;
}

.home-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color:var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}
.home-link:hover { color:var(--accent); }

.theme-toggle-sm {
    background:var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 6px 10px;
    cursor: pointer;
    font-size: 1.1rem;
}

/* Write Card */
.write-card {
    background:var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 30px;
}

.write-card h2 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 16px;
    color:var(--text-muted);
}

.form-row { margin-bottom: 12px; position: relative; }

.form-row input,
.form-row textarea {
    width: 100%;
    background:var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 10px;
    padding: 12px 14px;
    color:var(--text);
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    resize: vertical;
    transition: border-color 0.2s;
}

.form-row input:focus,
.form-row textarea:focus {
    outline: none;
    border-color:var(--accent);
}

.char-count {
    position: absolute;
    bottom: 8px;
    right: 12px;
    font-size: 0.75rem;
    color:var(--text-muted);
}

.submit-btn {
    background:linear-gradient(135deg, var(--accent), #7c3aed);
    color:var(--c-text);
    border: none;
    border-radius: 10px;
    padding: 10px 28px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}
.submit-btn:hover { opacity: 0.9; }
.submit-btn:active { transform: scale(0.97); }
.submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Messages */
.messages-section { margin-bottom: 40px; }

.messages-header {
    font-size: 0.85rem;
    color:var(--text-muted);
    margin-bottom: 16px;
    padding-left: 4px;
}

.msg-card {
    background:var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 16px 18px;
    margin-bottom: 10px;
    transition: border-color 0.2s;
}
.msg-card:hover { border-color:var(--accent); }

.msg-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.msg-nickname {
    font-weight: 600;
    font-size: 0.95rem;
}

.msg-date {
    font-size: 0.78rem;
    color:var(--text-muted);
}

.msg-body {
    font-size: 0.9rem;
    line-height: 1.6;
    color:var(--text);
    white-space: pre-wrap;
    word-break: break-word;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color:var(--text-muted);
}
.empty-state-icon { font-size: 2.5rem; margin-bottom: 12px; }

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 20px;
}

.page-btn {
    background:var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 6px 12px;
    color:var(--text);
    font-family: 'Outfit', sans-serif;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}
.page-btn:hover { border-color:var(--accent); }
.page-btn.active {
    background:var(--accent);
    color:#000;
    border-color:var(--accent);
    font-weight: 600;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background:var(--accent);
    color:#000;
    padding: 10px 24px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0;
    transition: all 0.3s;
    z-index: 999;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background:var(--danger); color:var(--c-text); }