:root {
    --bg: #eef2f7;
    --panel: #ffffff;
    --ink: #18202b;
    --muted: #607086;
    --line: #d8e0ea;
    --primary: #1166d8;
    --primary-deep: #0b4ca4;
    --success: #137a4f;
    --danger: #b23333;
    --warning: #9a6700;
    --shadow: 0 20px 60px rgba(16, 35, 58, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top right, rgba(17, 102, 216, 0.10), transparent 28%),
        linear-gradient(180deg, #f7fafc 0%, var(--bg) 100%);
}

a {
    color: var(--primary);
}

.shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: 32px 20px 60px;
}

.topbar,
.login-panel,
.card,
.history-card,
.notice {
    background: var(--panel);
    border: 1px solid rgba(216, 224, 234, 0.88);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

.topbar {
    padding: 24px 26px;
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
}

.eyebrow {
    display: inline-block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 10px;
}

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

p {
    margin: 0 0 12px;
    color: var(--muted);
    line-height: 1.6;
}

.grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 24px;
}

.card {
    padding: 24px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 18px;
}

.stat {
    background: #f4f8fd;
    border: 1px solid #dce8f8;
    border-radius: 16px;
    padding: 14px;
}

.stat strong {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 8px;
}

.stat span {
    font-size: 22px;
    font-weight: 700;
}

.field {
    margin-bottom: 16px;
}

.field label {
    display: block;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 8px;
}

.field small {
    display: block;
    margin-top: 8px;
    color: var(--muted);
}

input[type="text"],
input[type="password"],
input[type="datetime-local"],
textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 14px 15px;
    font-size: 15px;
    color: var(--ink);
    background: #fbfdff;
}

textarea {
    min-height: 220px;
    resize: vertical;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: rgba(17, 102, 216, 0.48);
    box-shadow: 0 0 0 4px rgba(17, 102, 216, 0.12);
}

.row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.button,
button {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 14px 20px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
}

.button-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
    color: #fff;
}

.button-secondary {
    background: #edf4ff;
    color: var(--primary);
}

.button-ghost {
    color: var(--muted);
    background: transparent;
    border: 1px solid var(--line);
}

.login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-panel {
    width: min(460px, 100%);
    padding: 30px;
}

.notice {
    padding: 16px 18px;
    margin-bottom: 20px;
}

.notice.error {
    border-color: rgba(178, 51, 51, 0.2);
    background: #fff6f6;
}

.notice.success {
    border-color: rgba(19, 122, 79, 0.2);
    background: #f4fcf7;
}

.notice.warning {
    border-color: rgba(154, 103, 0, 0.2);
    background: #fffaf0;
}

.history {
    display: grid;
    gap: 14px;
}

.history-card {
    padding: 18px;
}

.history-head,
.result-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: baseline;
}

.result-list {
    margin-top: 12px;
    display: grid;
    gap: 10px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 700;
}

.tag.success {
    color: var(--success);
    background: rgba(19, 122, 79, 0.12);
}

.tag.error {
    color: var(--danger);
    background: rgba(178, 51, 51, 0.12);
}

.meta {
    color: var(--muted);
    font-size: 13px;
}

.preview-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.preview-list span {
    background: #f2f7ff;
    color: #205bb3;
    border: 1px solid #dbe8fb;
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 12px;
}

@media (max-width: 920px) {
    .grid {
        grid-template-columns: 1fr;
    }

    .stats,
    .row {
        grid-template-columns: 1fr;
    }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }
}