:root {
    --bg: #08111d;
    --bg_alt: #0d1830;
    --panel: rgba(19, 29, 55, 0.96);
    --panel_soft: rgba(255, 255, 255, 0.035);
    --text: #e8edf8;
    --muted: #a4b4d8;
    --line: rgba(255, 255, 255, 0.08);
    --accent: #5aa2ff;
    --accent_soft: rgba(90, 162, 255, 0.16);
    --ok: #8ee3a0;
    --ok_soft: rgba(142, 227, 160, 0.14);
    --warn: #ffd27a;
    --warn_soft: rgba(255, 210, 122, 0.14);
    --danger: #ff8d8d;
    --danger_soft: rgba(255, 141, 141, 0.14);
    --radius: 20px;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg_alt) 100%);
    color: var(--text);
    font-family: Inter, Arial, sans-serif;
}

body {
    min-height: 100vh;
}

button,
input,
select {
    font: inherit;
}

.app_shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 280px 1fr;
}

.sidebar {
    padding: 24px 18px;
    border-right: 1px solid var(--line);
    background: rgba(7, 12, 24, 0.82);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    height: 100vh;
}

.brand_block {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 26px;
}

.brand_mark {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    font-weight: 800;
    color: #08111d;
    background: linear-gradient(135deg, #5aa2ff, #82e6c1);
}

.brand_block h1 {
    font-size: 18px;
    margin: 0;
}

.brand_block p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 12px;
}

.nav_group {
    margin-top: 18px;
}

.nav_title {
    margin: 0 0 10px;
    padding: 0 8px;
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.nav_link {
    display: block;
    text-decoration: none;
    color: var(--text);
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid transparent;
    margin: 6px 0;
}

.nav_link:hover,
.nav_link.active {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--line);
}

.main_area {
    padding: 26px;
}

.card {
    background: linear-gradient(180deg, rgba(24, 35, 67, 0.98), rgba(18, 26, 50, 0.98));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero_grid {
    display: grid;
    grid-template-columns: 1.55fr 0.85fr;
    gap: 18px;
    margin-bottom: 20px;
}

.hero_main,
.hero_side,
.panel,
.toolbar_card {
    padding: 22px;
}

.eyebrow {
    color: #82e6c1;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    margin-bottom: 10px;
}

.hero_main h2 {
    margin: 0;
    font-size: 34px;
    line-height: 1.08;
}

.hero_main p {
    color: var(--muted);
    line-height: 1.65;
    margin: 12px 0 0;
    max-width: 760px;
}

.hero_side {
    display: grid;
    gap: 12px;
    align-content: start;
}

.mini_stat {
    background: var(--panel_soft);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 14px;
}

.mini_label {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 6px;
}

.mini_stat strong {
    font-size: 28px;
}

.mini_stat .small_state {
    font-size: 18px;
}

.toolbar_grid,
.stats_grid,
.content_grid {
    display: grid;
    gap: 16px;
}

.toolbar_grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.stats_grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin: 20px 0;
}

.content_grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
}

label {
    display: block;
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}

select,
input {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.045);
    color: var(--text);
    outline: none;
}

.stat_card {
    padding: 18px;
}

.stat_title {
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 12px;
    margin-bottom: 8px;
}

.stat_number {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 4px;
}

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

.tab_row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.tab_button,
.badge,
.type_tag {
    border-radius: 999px;
}

.tab_button {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    padding: 10px 14px;
    cursor: pointer;
}

.tab_button.active {
    background: var(--accent_soft);
    border-color: rgba(90, 162, 255, 0.45);
}

.panel_header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.panel_header h3,
.side_panel h3 {
    margin: 0;
    font-size: 20px;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
}

.change_list {
    display: grid;
    gap: 12px;
}

.change_item,
.summary_item {
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.03);
}

.change_item {
    padding: 16px;
}

.change_item_top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.type_tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 700;
}

.type_new {
    color: var(--ok);
    background: var(--ok_soft);
}

.type_fix {
    color: #82e6c1;
    background: rgba(130, 230, 193, 0.14);
}

.type_issue {
    color: var(--danger);
    background: var(--danger_soft);
}

.type_port {
    color: var(--warn);
    background: var(--warn_soft);
}

.change_item h4 {
    margin: 0 0 8px;
    font-size: 16px;
}

.change_item p,
.helper_text,
.meta_text {
    color: var(--muted);
}

.change_item p {
    margin: 0;
    line-height: 1.58;
}

.meta_text {
    margin-top: 10px;
    font-size: 12px;
}

.summary_box {
    display: grid;
    gap: 12px;
}

.summary_item {
    padding: 14px;
}

.summary_title {
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.summary_value {
    font-size: 16px;
    font-weight: 700;
}

.helper_text {
    margin-top: 16px;
    font-size: 12px;
    line-height: 1.55;
}

.empty_state {
    padding: 20px;
    border: 1px dashed var(--line);
    border-radius: 16px;
    color: var(--muted);
}

@media (max-width: 1180px) {
    .app_shell,
    .hero_grid,
    .content_grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: relative;
        height: auto;
    }

    .toolbar_grid,
    .stats_grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .main_area {
        padding: 16px;
    }

    .toolbar_grid,
    .stats_grid {
        grid-template-columns: 1fr;
    }

    .hero_main h2 {
        font-size: 28px;
    }
}