*, *::before, *::after { box-sizing: border-box; }

:root {
    --bg: #08111f;
    --panel: #101f35;
    --panel-2: #142840;
    --line: rgba(255, 255, 255, 0.1);
    --text: #f4f7ff;
    --muted: #a9b7cc;
    --red: #d32f2f;
    --green: #3fb984;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Barlow", Arial, sans-serif;
}

a { color: inherit; }

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1rem;
}

.login-card,
.panel,
.message-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.login-card {
    width: min(460px, 100%);
    padding: 1.5rem;
}

h1,
h2 {
    margin: 0;
    font-family: "Barlow Condensed", sans-serif;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

p {
    color: var(--muted);
    line-height: 1.6;
}

label {
    display: grid;
    gap: 0.4rem;
    color: var(--muted);
    font-weight: 700;
    font-size: 0.88rem;
}

input,
textarea,
button {
    width: 100%;
    border-radius: 4px;
    font: inherit;
}

input,
textarea {
    border: 1px solid var(--line);
    background: #0b1728;
    color: var(--text);
    padding: 0.75rem;
}

textarea {
    min-height: 96px;
    resize: vertical;
}

button {
    border: 0;
    background: var(--red);
    color: #fff;
    padding: 0.8rem 1rem;
    cursor: pointer;
    font-weight: 700;
}

small { display: block; color: var(--muted); margin-top: 1rem; }

.admin-header {
    position: sticky;
    top: 0;
    z-index: 5;
    display: grid;
    grid-template-columns: 210px 1fr;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.25rem;
    background: rgba(8, 17, 31, 0.94);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
}

.admin-header strong {
    font-family: "Barlow Condensed", sans-serif;
    font-size: 1.4rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.admin-header nav {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.admin-header a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
}

.admin-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.25rem;
}

.panel {
    margin: 1rem 0;
    padding: 1rem;
}

.panel-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--line);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.panel-head p {
    max-width: 560px;
    margin: 0;
    text-align: right;
}

.grid-form,
.item-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.wide,
.item-title,
.actions,
.delete-form,
.check {
    grid-column: 1 / -1;
}

.item-stack {
    display: grid;
    gap: 0.75rem;
}

.item-form,
.delete-form {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid var(--line);
    border-radius: 6px;
}

.delete-form {
    margin-top: -0.75rem;
    border-top: 0;
}

.delete-form button {
    background: transparent;
    border: 1px solid rgba(211, 47, 47, 0.5);
    color: #ffb6b6;
}

.item-title {
    font-weight: 700;
    color: #fff;
}

.check {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.check input {
    width: auto;
}

.alert {
    margin-bottom: 1rem;
    padding: 0.85rem 1rem;
    border-radius: 4px;
    background: rgba(63, 185, 132, 0.12);
    border: 1px solid rgba(63, 185, 132, 0.38);
    color: #d7ffe7;
}

.alert.error {
    background: rgba(211, 47, 47, 0.13);
    border-color: rgba(211, 47, 47, 0.4);
}

.message-card {
    padding: 1rem;
}

.message-card div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.message-card span,
.empty {
    color: var(--muted);
}

dl {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 0.45rem 1rem;
}

dt { color: var(--muted); }
dd { margin: 0; }

@media (max-width: 780px) {
    .admin-header,
    .grid-form,
    .item-form {
        grid-template-columns: 1fr;
    }

    .panel-head {
        display: block;
    }

    .panel-head p {
        text-align: left;
        margin-top: 0.5rem;
    }
}