:root {
    --bg: #0d1117;
    --bg-panel: #151b23;
    --border: #2a323d;
    --text: #dbe1e8;
    --text-dim: #8b96a5;
    --accent: #4f9fff;
    --danger: #ff5d5d;
    --success: #3fce7a;
    --warn: #f2b84b;
    --radius: 6px;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 28px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-panel);
}

.brand { display: flex; gap: 8px; align-items: center; font-weight: 600; letter-spacing: 0.2px; }
.brand-mark { color: var(--accent); }

.topbar nav a {
    color: var(--text-dim);
    text-decoration: none;
    margin-left: 22px;
    font-size: 14px;
}
.topbar nav a:hover { color: var(--text); }

.content { padding: 28px; max-width: 1100px; margin: 0 auto; }

h1 { font-size: 22px; margin: 0 0 18px; font-weight: 600; }
h2 { font-size: 17px; font-weight: 600; margin: 0 0 12px; }

.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    margin-bottom: 18px;
}

.table { width: 100%; border-collapse: collapse; }
.table th, .table td {
    text-align: left;
    padding: 9px 10px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.table th { color: var(--text-dim); font-weight: 500; }

.badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-family: var(--mono);
}
.badge.draft { background: #2a323d; color: var(--text-dim); }
.badge.scheduled { background: #3d3410; color: var(--warn); }
.badge.sending { background: #2b3a5c; color: var(--accent); }
.badge.sent { background: #1c3d2c; color: var(--success); }
.badge.completed { background: #1c3d2c; color: var(--success); }
.badge.aborted { background: #4a2323; color: var(--danger); }

.btn {
    display: inline-block;
    background: var(--accent);
    color: #05121f;
    padding: 8px 16px;
    border-radius: var(--radius);
    border: none;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
}
.btn.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.danger { background: var(--danger); color: #23070a; }

label { display: block; font-size: 13px; color: var(--text-dim); margin: 14px 0 5px; }
input, textarea, select {
    width: 100%;
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    padding: 9px 10px;
    font-size: 14px;
    font-family: inherit;
}
textarea { min-height: 160px; font-family: var(--mono); }

.hint { color: var(--text-dim); font-size: 12.5px; margin-top: 4px; }

.stat-row { display: flex; gap: 14px; margin-bottom: 18px; }
.stat {
    flex: 1;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
}
.stat .num { font-size: 26px; font-weight: 700; font-family: var(--mono); }
.stat .label { color: var(--text-dim); font-size: 12.5px; margin-top: 2px; }

.auth-notice {
    border: 1px solid #4a3d1c;
    background: #241f0d;
    color: var(--warn);
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 13.5px;
    margin-bottom: 18px;
}

.splash-screen {
    position: fixed;
    inset: 0;
    background: #000000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease;
    padding: 24px;
    box-sizing: border-box;
}
.splash-screen.splash-hide {
    opacity: 0;
    pointer-events: none;
}
.splash-logo {
    width: min(420px, 85vw);
    height: auto;
    border-radius: 24px;
    box-shadow: 0 0 60px rgba(79, 159, 255, 0.15);
}
.splash-progress-track {
    width: min(340px, 75vw);
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    margin-top: 28px;
    overflow: hidden;
}
.splash-progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #4f9fff, #3fce7a);
    border-radius: 999px;
}
.splash-message {
    margin-top: 16px;
    color: var(--text-dim);
    font-size: 14px;
    text-align: center;
    min-height: 20px;
    transition: opacity 0.2s ease;
}