:root {
    --blue: #5fa2dd;
    --blue-600: #3d8bc7;
    --blue-700: #2b6fa8;
    --blue-800: #1f5684;
    --blue-50: #eef6fc;
    --blue-100: #d7ebf8;
    --blue-200: #b5d6ef;
    --ink: #16324a;
    --muted: #5b7388;
    --line: #d5e4f0;
    --bg: #f3f7fb;
    --card: #ffffff;
    --danger: #c23b4a;
    --ok: #1f8a5b;
    --shadow: 0 10px 30px rgba(22, 50, 74, 0.08);
    --radius: 16px;
    --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100%;
    background:
        radial-gradient(1200px 400px at 10% -10%, rgba(95, 162, 221, 0.22), transparent 55%),
        radial-gradient(900px 380px at 100% 0%, rgba(43, 111, 168, 0.12), transparent 50%),
        var(--bg);
    color: var(--ink);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.5;
}

a {
    color: var(--blue-700);
    text-decoration: none;
}

a:hover {
    color: var(--blue-800);
}

img {
    border: 0;
    max-width: 100%;
}

p {
    margin: 0 0 0.8rem;
    color: var(--muted);
}

#container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 18px 24px;
}

#page_header {
    position: sticky;
    top: 0;
    z-index: 20;
    margin: 0 -18px 22px;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 18px;
    max-width: 1120px;
    margin: 0 auto;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    flex-shrink: 0;
}

.brand:hover {
    color: var(--blue-700);
}

.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(180deg, var(--blue) 0%, var(--blue-700) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 3px;
    padding-bottom: 8px;
    box-shadow: 0 8px 16px rgba(43, 111, 168, 0.28);
}

.brand-mark span {
    display: block;
    width: 3px;
    border-radius: 2px;
    background: #fff;
}
.brand-mark span:nth-child(1) { height: 8px; }
.brand-mark span:nth-child(2) { height: 13px; }
.brand-mark span:nth-child(3) { height: 18px; }

.brand-text {
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.03em;
}

.brand-text em {
    font-style: normal;
    color: var(--blue-600);
}

#page_menu {
    flex: 1;
}

#page_menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 6px;
}

#page_menu a {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 13px;
    border-radius: 999px;
    color: var(--muted);
    font-weight: 600;
    font-size: 0.92rem;
}

#page_menu a:hover,
#page_menu a.is-active {
    color: var(--blue-800);
    background: var(--blue-50);
}

#page_headerlinks {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.user-chip {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    background: var(--blue-50);
    color: var(--blue-800);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
}

.user-chip.is-active,
.user-chip:hover {
    background: var(--blue);
    color: #fff;
}

.header-link {
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 600;
}

.header-cta {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 16px;
    border-radius: 999px;
    background: var(--blue);
    color: #fff !important;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 8px 16px rgba(95, 162, 221, 0.28);
}

.header-cta:hover {
    background: var(--blue-700);
}

#main_content {
    flex: 1;
}

#new_item {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: calc(var(--radius) + 4px);
    box-shadow: var(--shadow);
    padding: 28px 28px 24px;
}

#new_item_header {
    margin-bottom: 18px;
}

#new_item_header h1 {
    margin: 0;
    font-size: 1.7rem;
    letter-spacing: -0.03em;
    color: var(--ink);
    font-weight: 750;
}

#new_item_header h2 {
    margin: 4px 0 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--muted);
}

#page_footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 22px 0 8px;
    color: var(--muted);
    font-size: 0.85rem;
}

#page_footer .dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--blue);
}

.page-login #main_content {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.page-login #new_item {
    width: 100%;
    max-width: 440px;
}

.page-login .app-btn-primary {
    width: 100%;
    margin-right: 0;
}

.page-login.page-register #new_item {
    max-width: 560px;
}

@media (max-width: 820px) {
    #container {
        padding: 0 12px 18px;
    }

    #page_header {
        margin: 0 -12px 16px;
        padding: 10px 12px 8px;
    }

    .header-inner {
        flex-wrap: wrap;
        gap: 10px;
    }

    #page_menu {
        order: 3;
        flex: 1 0 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    #page_menu ul {
        width: max-content;
    }

    #new_item {
        padding: 18px 14px 16px;
        border-radius: 14px;
    }

    #new_item_header h1 {
        font-size: 1.35rem;
    }
}