:root {
    --font-sans: "Roboto", sans-serif;
    --color-bg: #f5f7fa;
    --color-surface: #ffffff;
    --color-surface-soft: #f9f9f9;
    --color-text: #12263a;
    --color-muted: #4f6171;
    --color-primary: #1f4b6e;
    --color-primary-dark: #17324b;
    --color-header-start: #12263a;
    --color-header-end: #1f4b6e;
    --color-danger: #c33;
    --shadow-soft: 0 18px 40px rgba(18, 38, 58, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
}

.header {
    background: linear-gradient(135deg, var(--color-header-start) 0%, var(--color-header-end) 100%);
    color: #fff;
    padding: 20px;
}

.header h1,
.header p {
    margin: 0;
}

.header p {
    margin-top: 6px;
    color: rgba(255, 255, 255, 0.82);
}

.header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.header-row .button-link.secondary {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

.page-wrap {
    width: min(100% - 32px, 920px);
    margin: 28px auto 0;
}

.card {
    background: var(--color-surface);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-soft);
}

.title {
    margin: 0 0 8px;
}

.subtitle {
    margin: 0;
    color: var(--color-muted);
}

.actions {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.inline-form {
    margin: 0;
}

.button-link,
button {
    border: none;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    padding: 10px 18px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.button-link.secondary {
    background: #dfe8ef;
    color: var(--color-primary-dark);
}

.error-message {
    background: #fee;
    color: var(--color-danger);
    border-left: 4px solid var(--color-danger);
    border-radius: 6px;
    padding: 10px 12px;
    margin: 0 0 12px;
}

input,
select,
textarea {
    border: 1px solid #d0d8df;
    border-radius: 8px;
    padding: 10px;
    font: inherit;
}

/* Hide number arrows (Chrome, Safari, Edge, Opera) */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Hide number arrows (Firefox and modern browsers) */
input[type="number"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

@media (max-width: 640px) {
    .page-wrap {
        width: calc(100% - 24px);
    }

    .card {
        padding: 18px;
    }

    .header-row {
        align-items: stretch;
    }
}