/* Phase 02.5 — Premium shell. RTL column 1 is visually on the right. */
html, body { width: 100%; height: 100%; overflow: hidden; }
.arg-body { overflow: hidden; background: var(--arg-bg-page); }

.arg-shell {
    direction: rtl;
    width: 100vw;
    height: 100vh;
    min-height: 0;
    display: grid;
    grid-template-columns: var(--arg-sidebar-width) minmax(0,1fr);
    overflow: hidden;
    background: var(--arg-bg-page);
    transition: grid-template-columns var(--arg-transition-slow);
}
.arg-shell.is-sidebar-collapsed { grid-template-columns: var(--arg-sidebar-collapsed-width) minmax(0,1fr); }

.arg-sidebar {
    grid-column: 1;
    min-width: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    color: var(--arg-text-on-dark);
    background:
        radial-gradient(circle at 12% 8%, rgba(69,124,153,.18), transparent 32%),
        linear-gradient(165deg, var(--arg-bg-sidebar-2), var(--arg-bg-sidebar) 62%);
    box-shadow: -10px 0 34px rgba(13,27,47,.12);
    isolation: isolate;
    z-index: 40;
}
.arg-sidebar::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: .34;
    background-image: linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
    background-size: 28px 28px;
    mask-image: linear-gradient(to bottom, #000, transparent 72%);
}

.arg-main {
    grid-column: 2;
    min-width: 0;
    width: 100%;
    height: 100vh;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.arg-brand {
    min-height: var(--arg-header-height);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 18px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.arg-brand__mark {
    width: 40px;
    height: 40px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    position: relative;
    overflow: hidden;
    color: #fff;
    background: linear-gradient(145deg, rgba(255,255,255,.19), rgba(255,255,255,.07));
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 13px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.16), 0 8px 22px rgba(0,0,0,.16);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.18rem;
    font-weight: 700;
}
.arg-brand__mark::after {
    content: "";
    width: 6px;
    height: 6px;
    position: absolute;
    inset-block-start: 6px;
    inset-inline-end: 6px;
    background: #58a9ee;
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(58,141,224,.72);
}
.arg-brand__text { min-width: 0; }
.arg-brand__text strong, .arg-brand__text span { display: block; }
.arg-brand__text strong { color: #fff; font-size: 1.02rem; font-weight: 950; letter-spacing: .025em; }
.arg-brand__text span { margin-top: -1px; color: var(--arg-text-on-dark-muted); font-family: Arial,sans-serif; font-size: .66rem; letter-spacing: .08em; }

.arg-sidebar__context {
    margin: 14px 14px 7px;
    padding: 12px 13px;
    position: relative;
    overflow: hidden;
    background: rgba(255,255,255,.055);
    border: 1px solid rgba(255,255,255,.095);
    border-radius: 14px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.045);
}
.arg-sidebar__context::before {
    content: "";
    width: 3px;
    position: absolute;
    inset-block: 12px;
    inset-inline-start: 0;
    background: linear-gradient(var(--arg-color-accent), #20b8c6);
    border-radius: 999px;
}
.arg-sidebar__context span, .arg-sidebar__context strong, .arg-sidebar__context small { display: block; }
.arg-sidebar__context span { color: #94a9bf; font-size: .68rem; font-weight: 800; }
.arg-sidebar__context strong { margin-top: 2px; overflow: hidden; color: #f5f8fb; font-size: .82rem; font-weight: 900; text-overflow: ellipsis; white-space: nowrap; }
.arg-sidebar__context small { margin-top: 3px; color: #adbac9; font-size: .68rem; }

.arg-navigation {
    flex: 1;
    min-height: 0;
    padding: 10px 12px 20px;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    scrollbar-width: thin;
    scrollbar-color: rgba(175,195,216,.36) transparent;
}
.arg-navigation::-webkit-scrollbar { width: 7px; }
.arg-navigation::-webkit-scrollbar-track { background: transparent; }
.arg-navigation::-webkit-scrollbar-thumb { background: rgba(174,195,215,.28); border: 2px solid transparent; background-clip: padding-box; border-radius: 999px; }
.arg-navigation::-webkit-scrollbar-thumb:hover { background-color: rgba(196,215,232,.48); }
.arg-navigation__list, .arg-navigation__children { list-style: none; padding: 0; margin: 0; }
.arg-navigation__node { list-style: none; }
.arg-navigation__link, .arg-navigation__group-toggle {
    width: 100%;
    min-height: 48px;
    margin: 3px 0;
    padding: 9px 11px;
    display: flex;
    align-items: center;
    gap: 11px;
    position: relative;
    color: #cbd6e3;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 12px;
    font: inherit;
    font-size: .82rem;
    font-weight: 850;
    line-height: 1.4;
    text-align: right;
    cursor: pointer;
    transition: color var(--arg-transition-fast), background var(--arg-transition-fast), border-color var(--arg-transition-fast), box-shadow var(--arg-transition-fast);
}
.arg-navigation__link:hover, .arg-navigation__group-toggle:hover { color: #fff; background: var(--arg-bg-sidebar-hover); }
.arg-navigation__link i, .arg-navigation__group-toggle > i:first-child {
    width: 22px;
    min-width: 22px;
    color: #8fa9c0;
    text-align: center;
    font-size: .94rem;
    transition: color var(--arg-transition-fast), transform var(--arg-transition-fast);
}
.arg-navigation__link:hover i, .arg-navigation__group-toggle:hover > i:first-child { color: #c6d9e8; transform: translateY(-1px); }
.arg-navigation__chevron { margin-inline-start: auto; color: #758ca2; font-size: .65rem; transition: transform var(--arg-transition); }
.arg-navigation__group-toggle[aria-expanded="true"] .arg-navigation__chevron { transform: rotate(-90deg); }
.arg-navigation__children { margin: 2px 12px 7px 0; padding: 1px 10px 1px 0; overflow: hidden; }
.arg-navigation__children[hidden] { display: none !important; }
.arg-navigation__children:not([hidden]) { animation: arg-nav-open .17s ease-out both; }
.arg-navigation__children .arg-navigation__link, .arg-navigation__children .arg-navigation__group-toggle {
    min-height: 42px;
    margin: 2px 0;
    padding-block: 7px;
    color: #b7c6d5;
    background: rgba(255,255,255,.022);
    font-size: .76rem;
    font-weight: 800;
}
.arg-navigation__link.is-active,
.arg-navigation__node.is-current > .arg-navigation__link {
    color: #fff;
    background: linear-gradient(135deg, rgba(70,116,147,.27), rgba(255,255,255,.08));
    border-color: rgba(161,192,214,.17);
    box-shadow: inset 3px 0 0 #58a9ee, 0 8px 20px rgba(5,17,31,.16);
}
.arg-navigation__link.is-active i,
.arg-navigation__node.is-current > .arg-navigation__link i { color: #e7cfab; }
.arg-navigation__node.is-expanded > .arg-navigation__group-toggle {
    color: #edf4fa;
    background: rgba(255,255,255,.035);
}
.arg-navigation__node.is-expanded > .arg-navigation__group-toggle > i:first-child { color: #b8cfdf; }
@keyframes arg-nav-open { from { opacity: .35; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

.arg-sidebar-empty { margin: 14px 4px; padding: 12px; display: flex; align-items: center; gap: 8px; color: #aab8c7; background: rgba(255,255,255,.045); border-radius: 12px; font-size: .75rem; }
.arg-sidebar__footer { min-height: 44px; padding: 10px 17px; display: flex; align-items: center; gap: 8px; color: #8498ad; border-top: 1px solid rgba(255,255,255,.07); font-size: .67rem; }

.arg-header {
    flex: 0 0 var(--arg-header-height);
    height: var(--arg-header-height);
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 13px;
    position: relative;
    z-index: var(--arg-z-header);
    background: rgba(255,253,250,.92);
    border-bottom: 1px solid var(--arg-border);
    box-shadow: 0 5px 24px rgba(21,35,55,.045);
    backdrop-filter: blur(18px) saturate(145%);
}
.arg-header__sidebar-toggle { flex: 0 0 auto; }
.arg-header__title { min-width: 0; flex: 1; }
.arg-header__title span, .arg-header__title small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.arg-header__title span { color: var(--arg-text-primary); font-size: .9rem; font-weight: 950; }
.arg-header__title small { margin-top: 1px; color: var(--arg-text-muted); font-size: .68rem; font-weight: 700; }
.arg-header__actions { min-width: 0; display: flex; align-items: center; gap: 7px; flex: 0 1 auto; }

.arg-content {
    flex: 1 1 auto;
    min-height: 0;
    width: 100%;
    padding: 18px 20px;
    position: relative;
    overflow: auto;
    overscroll-behavior: contain;
    background:
        radial-gradient(circle at 10% -12%, rgba(53,106,132,.09), transparent 32%),
        radial-gradient(circle at 96% 2%, rgba(32,184,198,.065), transparent 24%),
        linear-gradient(180deg, var(--arg-bg-page) 0%, var(--arg-bg-surface-soft) 58%, var(--arg-bg-page-warm) 100%);
    scrollbar-width: thin;
    scrollbar-color: rgba(76,98,124,.32) transparent;
}
.arg-content::-webkit-scrollbar { width: 9px; height: 9px; }
.arg-content::-webkit-scrollbar-track { background: transparent; }
.arg-content::-webkit-scrollbar-thumb { background: rgba(76,98,124,.28); border: 2px solid transparent; background-clip: padding-box; border-radius: 999px; }
.arg-footer {
    flex: 0 0 var(--arg-footer-height);
    min-height: var(--arg-footer-height);
    padding: 5px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: #87909d;
    background: rgba(255,255,255,.78);
    border-top: 1px solid var(--arg-border-soft);
    font-size: .65rem;
}

.arg-sidebar-backdrop { display: none; }

/* Collapsed sidebar */
.arg-shell.is-sidebar-collapsed .arg-brand { justify-content: center; padding-inline: 0; }
.arg-shell.is-sidebar-collapsed .arg-brand__text,
.arg-shell.is-sidebar-collapsed .arg-sidebar__context,
.arg-shell.is-sidebar-collapsed .arg-sidebar__footer,
.arg-shell.is-sidebar-collapsed .arg-navigation__link span,
.arg-shell.is-sidebar-collapsed .arg-navigation__group-toggle span,
.arg-shell.is-sidebar-collapsed .arg-navigation__chevron { display: none !important; }
.arg-shell.is-sidebar-collapsed .arg-navigation { padding-inline: 8px; }
.arg-shell.is-sidebar-collapsed .arg-navigation__link,
.arg-shell.is-sidebar-collapsed .arg-navigation__group-toggle { width: 52px; min-height: 52px; margin: 6px auto; padding: 0; justify-content: center; border-radius: 14px; }
.arg-shell.is-sidebar-collapsed .arg-navigation__link i,
.arg-shell.is-sidebar-collapsed .arg-navigation__group-toggle i { width: auto; min-width: 0; margin: 0; font-size: 1rem; }
.arg-shell.is-sidebar-collapsed .arg-navigation__children { display: none !important; }

@media (max-width: 1100px) {
    .arg-active-context > span:first-of-type { display: none; }
}
@media (max-width: 980px) {
    html, body { height: auto; overflow: auto; }
    .arg-body { overflow: auto; }
    .arg-shell, .arg-shell.is-sidebar-collapsed { display: block; min-height: 100vh; height: auto; overflow: visible; }
    .arg-sidebar {
        position: fixed;
        inset-block: 0;
        inset-inline-start: 0;
        width: min(var(--arg-sidebar-width), calc(100vw - 48px));
        transform: translateX(105%);
        transition: transform var(--arg-transition-slow);
        z-index: var(--arg-z-sidebar-mobile);
    }
    .arg-shell.is-sidebar-open .arg-sidebar { transform: translateX(0); }
    .arg-sidebar-backdrop {
        position: fixed;
        inset: 0;
        z-index: var(--arg-z-sidebar-backdrop);
        display: block;
        visibility: hidden;
        opacity: 0;
        background: rgba(9,19,33,.46);
        backdrop-filter: blur(3px);
        transition: opacity var(--arg-transition), visibility var(--arg-transition);
    }
    .arg-shell.is-sidebar-open .arg-sidebar-backdrop { visibility: visible; opacity: 1; }
    .arg-main { min-height: 100vh; height: auto; overflow: visible; }
    .arg-header { position: sticky; top: 0; padding-inline: 12px; }
    .arg-content { padding: 13px; overflow: visible; }
    .arg-user-menu__text { display: none; }
    .arg-footer { flex-direction: column; align-items: flex-start; gap: 0; }
}
@media (max-width: 640px) {
    .arg-header { gap: 7px; }
    .arg-header__title span { display: none; }
    .arg-header__title small { font-size: .74rem; color: var(--arg-text-primary); font-weight: 900; }
    .arg-header__actions { gap: 4px; }
    .arg-active-context { max-width: 150px; padding-inline: 8px; }
    .arg-active-context__fiscal { display: none; }
    .arg-user-menu__button { padding-inline: 2px; }
}
@media (max-width: 430px) {
    .arg-header__title { display: none; }
    .arg-header__actions { margin-inline-start: auto; }
}

/* Phase 03.4-P8 — refined shell, header and navigation. */
.arg-sidebar {
    background:
        radial-gradient(circle at 14% 5%, rgba(58,141,224,.24), transparent 31%),
        radial-gradient(circle at 92% 78%, rgba(32,184,198,.10), transparent 28%),
        linear-gradient(165deg, var(--arg-bg-sidebar-2), var(--arg-bg-sidebar) 64%);
    box-shadow: -12px 0 38px rgba(12,32,56,.16);
}
.arg-sidebar::before {
    opacity: .38;
    background-image:
        linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size: 36px 36px;
}
.arg-brand { border-bottom-color: rgba(255,255,255,.10); }
.arg-brand__mark {
    background: linear-gradient(145deg, rgba(255,255,255,.20), rgba(255,255,255,.075));
    border-color: rgba(255,255,255,.22);
    border-radius: 14px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.18), 0 10px 26px rgba(0,0,0,.17);
}
.arg-brand__mark::after {
    background: #58a9ee;
    box-shadow: 0 0 12px rgba(58,141,224,.72);
}
.arg-sidebar__context {
    background: linear-gradient(135deg, rgba(255,255,255,.085), rgba(255,255,255,.045));
    border-color: rgba(255,255,255,.12);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 10px 28px rgba(3,15,28,.10);
}
.arg-sidebar__context::before { background: linear-gradient(var(--arg-color-accent), #20b8c6); }
.arg-navigation__link,
.arg-navigation__group-toggle { border-radius: 11px; }
.arg-navigation__link:hover,
.arg-navigation__group-toggle:hover {
    background: rgba(255,255,255,.075);
    border-color: rgba(255,255,255,.055);
}
.arg-navigation__link.is-active,
.arg-navigation__node.is-current > .arg-navigation__link {
    background: linear-gradient(135deg, rgba(58,141,224,.28), rgba(255,255,255,.085));
    border-color: rgba(157,216,255,.18);
    box-shadow: inset 3px 0 0 #58a9ee, 0 9px 22px rgba(3,16,30,.18);
}
.arg-navigation__link.is-active i,
.arg-navigation__node.is-current > .arg-navigation__link i { color: #bde2ff; }
.arg-navigation__node.is-expanded > .arg-navigation__group-toggle {
    background: rgba(255,255,255,.055);
    border-color: rgba(255,255,255,.04);
}
.arg-header {
    background: rgba(255,255,255,.92);
    border-bottom-color: rgba(203,216,229,.92);
    box-shadow: 0 7px 26px rgba(17,47,82,.055);
    backdrop-filter: blur(18px) saturate(155%);
}
.arg-content {
    background:
        linear-gradient(rgba(23,61,105,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(23,61,105,.025) 1px, transparent 1px),
        radial-gradient(circle at 8% -10%, rgba(58,141,224,.12), transparent 31%),
        radial-gradient(circle at 96% 2%, rgba(32,184,198,.075), transparent 25%),
        linear-gradient(160deg, #f8fbfe 0%, #eef4f9 56%, #e9f1f8 100%);
    background-size: 42px 42px, 42px 42px, auto, auto, auto;
}
.arg-footer {
    color: #7c8ca0;
    background: rgba(255,255,255,.84);
    border-top-color: var(--arg-border);
    backdrop-filter: blur(12px);
}
.arg-dropdown {
    border-color: var(--arg-border);
    background: rgba(255,255,255,.98);
    box-shadow: var(--arg-shadow-float);
}
.arg-user-menu__button:hover,
.arg-user-menu.is-open .arg-user-menu__button { border-color: var(--arg-border-hover); background: #f8fbfe; }
.arg-avatar { background: linear-gradient(145deg, var(--arg-color-primary), var(--arg-color-accent)); }