:root { color-scheme: light dark; --bg: #ffffff; --text: #222222; --muted: #666666; --card: #fafafa; --border: #dddddd; --input-bg: #ffffff; --input-text: #222222; --button-bg: #222222; --button-text: #ffffff; --shadow: 0 8px 24px rgba(0, 0, 0, 0.06); }
@media (prefers-color-scheme: dark) { :root { --bg: #0f1115; --text: #f0f0f0; --muted: #aaaaaa; --card: #161a22; --border: #2a2f3a; --input-bg: #0f131a; --input-text: #f0f0f0; --button-bg: #f0f0f0; --button-text: #111111; --shadow: 0 8px 24px rgba(0, 0, 0, 0.35); } }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
body { min-height: 100vh; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
main { background: var(--bg); }
.container { max-width: 760px; margin: 0 auto; padding: 32px 16px 48px; min-height: 100vh; background: var(--bg); }
.page-header { margin-bottom: 20px; }
.page-header h1 { margin: 0 0 8px; font-size: 2rem; line-height: 1.2; }
.page-header p { margin: 0; color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px; }
form { display: grid; gap: 14px; }
.field { display: grid; gap: 8px; }
.field span { font-size: 0.95rem; font-weight: 600; color: var(--muted); }
input, textarea { width: 100%; border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; font: inherit; background: var(--input-bg); color: var(--input-text); outline: none; }
textarea { min-height: 140px; resize: vertical; }
input:focus, textarea:focus { border-color: #888888; }
button { width: fit-content; border: 1px solid var(--border); border-radius: 999px; padding: 12px 18px; font: inherit; font-weight: 700; background: var(--button-bg); color: var(--button-text); cursor: pointer; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 14px; }
.section-head h2 { margin: 0; font-size: 1.2rem; }
.section-head span { color: var(--muted); font-size: 0.92rem; }
.messages { display: grid; gap: 12px; }
.message-card { border: 1px solid var(--border); border-radius: 14px; padding: 16px; background: var(--bg); }
.message-meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 10px; font-size: 0.92rem; color: var(--muted); }
.message-meta strong { color: var(--text); }
.ip-location { color: var(--muted); }
.message-meta time { margin-left: auto; }
.message-card p { margin: 0; line-height: 1.7; word-break: break-word; }
.empty-state { padding: 18px 0; color: var(--muted); text-align: center; }
@media (max-width: 640px) { .section-head, .message-meta { flex-direction: column; align-items: flex-start; } .message-meta time { margin-left: 0; } button { width: 100%; } }