:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #1b2430;
    --muted: #697586;
    --accent: #0f4c81;
    --accent-2: #1f9d8b;
    --danger: #c93c3c;
    --border: #d9e1e8;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 90% 10%, #d6ebff 0%, rgba(214, 235, 255, 0) 35%),
        linear-gradient(180deg, #f8fbfe 0%, var(--bg) 80%);
}

.layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    min-height: 100vh;
}

.sidebar {
    border-right: 1px solid var(--border);
    background: #fcfdff;
    padding: 18px;
}

.main {
    padding: 18px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 14px;
    box-shadow: 0 3px 10px rgba(15, 76, 129, 0.05);
}

h1, h2, h3, h4 {
    margin: 0 0 10px;
}

.muted {
    color: var(--muted);
}

.row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

input[type="text"],
input[type="number"],
select,
textarea {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 10px;
    font: inherit;
}

textarea {
    width: 100%;
    min-height: 72px;
    resize: vertical;
}

button {
    border: 0;
    border-radius: 8px;
    padding: 9px 12px;
    cursor: pointer;
    font-weight: 600;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-success { background: var(--accent-2); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-muted { background: #eaf0f6; color: #1f2e3f; }

.project-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 260px;
    overflow: auto;
}

.project-item {
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    cursor: pointer;
    background: #fff;
}

.project-item.active {
    border-color: var(--accent);
    background: #eef5fc;
}

.uploads {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.upload-slot {
    border: 2px dashed #c8d4e2;
    border-radius: 10px;
    padding: 8px;
    text-align: center;
}

.upload-slot.active {
    border-color: var(--accent);
    background: #f0f7ff;
}

.workspace {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 12px;
}

canvas {
    width: 100%;
    max-width: 100%;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
}

.queue-list, .pdf-list {
    display: grid;
    gap: 8px;
    max-height: 220px;
    overflow: auto;
}

.queue-item, .pdf-item {
    display: grid;
    grid-template-columns: 54px 1fr auto;
    gap: 10px;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px;
}

.queue-item img {
    width: 54px;
    height: 64px;
    object-fit: cover;
    border-radius: 6px;
}

@media (max-width: 980px) {
    .layout { grid-template-columns: 1fr; }
    .workspace { grid-template-columns: 1fr; }
}