/* ==========================================================
   Kashoo V2 - Layout: header, sidebar, footer, grids, responsive
   ========================================================== */

/* ---------- Public / App header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 100;
    height: var(--header-h);
    background: var(--header-bg, rgba(255, 255, 255, .9));
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center;
    transition: box-shadow .25s;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.site-header .container {
    display: flex; align-items: center; justify-content: space-between; width: 100%;
}

.brand { display: flex; align-items: center; gap: var(--sp-2); font-weight: 700; font-size: 1.2rem; color: var(--text); }
.brand img, .brand svg { width: 34px; height: 34px; }
.brand span { background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.nav { display: flex; align-items: center; gap: var(--sp-2); }
.nav a.nav-link {
    padding: 8px 16px; border-radius: var(--radius-pill);
    color: var(--text); font-weight: 500; font-size: .95rem;
    display: inline-flex; align-items: center; gap: 6px;
}
.nav a.nav-link:hover { background: var(--mint-soft); color: var(--mint-dark); }
.nav a.nav-link.active { background: var(--gradient-soft); color: var(--lavender-dark); }

/* Dropdown (Earn) */
.dropdown { position: relative; }
.dropdown-menu {
    position: absolute; top: calc(100% + 10px); left: 0;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); box-shadow: var(--shadow-lg);
    min-width: 260px; padding: var(--sp-2);
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: all .2s; z-index: 200;
}
.dropdown:hover .dropdown-menu,
.dropdown.open .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a {
    display: flex; align-items: center; gap: var(--sp-3);
    padding: 10px 12px; border-radius: var(--radius-sm); color: var(--text);
}
.dropdown-menu a:hover { background: var(--mint-soft); }
.dropdown-menu .di { font-size: .8rem; color: var(--text-faint); display: block; }
.dropdown-menu .material-symbols-rounded {
    background: var(--gradient-soft); color: var(--lavender-dark);
    padding: 8px; border-radius: 12px;
}

/* User cluster */
.user-cluster { display: flex; align-items: center; gap: var(--sp-3); }
.balance-pill {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--gradient); color: #fff; font-weight: 600;
    padding: 8px 16px; border-radius: var(--radius-pill);
    box-shadow: var(--shadow); white-space: nowrap;
}
.avatar {
    width: 40px; height: 40px; border-radius: 50%;
    background: var(--gradient-soft); display: inline-flex;
    align-items: center; justify-content: center; font-weight: 600;
    color: var(--lavender-dark); cursor: pointer; overflow: hidden;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }

/* Hamburger */
.hamburger {
    display: none; background: none; border: none; cursor: pointer;
    width: 44px; height: 44px; border-radius: 12px; color: var(--text);
    align-items: center; justify-content: center;
}
.hamburger:hover { background: var(--mint-soft); }

/* ---------- Sidebar (mobile) ---------- */
.sidebar-backdrop {
    position: fixed; inset: 0; background: rgba(43, 45, 66, .45);
    backdrop-filter: blur(2px); z-index: 998; opacity: 0; visibility: hidden;
    transition: opacity .25s;
}
.sidebar-backdrop.open { opacity: 1; visibility: visible; }

.sidebar {
    position: fixed; top: 0; left: 0; height: 100%; width: var(--sidebar-w);
    max-width: 85vw; background: var(--surface); z-index: 999;
    box-shadow: var(--shadow-lg); border-radius: 0 22px 22px 0;
    transform: translateX(-105%); transition: transform .3s cubic-bezier(.4,0,.2,1);
    display: flex; flex-direction: column;
}
.sidebar.open { transform: translateX(0); }
.sidebar-head {
    padding: var(--sp-5); background: var(--gradient-soft);
    border-radius: 0 22px 0 0; position: relative;
}
.sidebar-head .close-btn {
    position: absolute; top: 14px; right: 14px; background: rgba(255,255,255,.6);
    border: none; border-radius: 50%; width: 36px; height: 36px; cursor: pointer;
    display: flex; align-items: center; justify-content: center; color: var(--text);
}
.sidebar-user { display: flex; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-3); }
.sidebar-user .avatar { width: 48px; height: 48px; background: #fff; }
.sidebar-user .name { font-weight: 600; }
.sidebar-user .handle { font-size: .82rem; color: var(--text-muted); }
.sidebar-balance {
    background: var(--gradient); color: #fff; border-radius: var(--radius);
    padding: 12px 16px; font-weight: 600; display: flex; justify-content: space-between; align-items: center;
}
.sidebar-balance small { display: block; font-weight: 400; opacity: .9; font-size: .72rem; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: var(--sp-3); }
.sidebar-nav a, .sidebar-nav button.acc-toggle {
    display: flex; align-items: center; gap: var(--sp-3); width: 100%;
    padding: 13px 14px; border-radius: var(--radius-sm); color: var(--text);
    font-weight: 500; font-size: .96rem; border: none; background: none;
    cursor: pointer; text-align: left; font-family: inherit;
}
.sidebar-nav a:hover, .sidebar-nav button.acc-toggle:hover { background: var(--mint-soft); }
.sidebar-nav a.active { background: var(--gradient-soft); color: var(--lavender-dark); font-weight: 600; }
.sidebar-nav .badge-dot { margin-left: auto; width: 9px; height: 9px; border-radius: 50%; background: var(--error); }
.sidebar-nav .acc-toggle .chev { margin-left: auto; transition: transform .2s; }
.sidebar-nav .acc.open .acc-toggle .chev { transform: rotate(180deg); }
.acc-panel { max-height: 0; overflow: hidden; transition: max-height .3s; padding-left: var(--sp-4); }
.acc.open .acc-panel { max-height: 320px; }
.acc-panel a { font-size: .9rem; padding: 11px 14px; }

.sidebar-foot { padding: var(--sp-4); border-top: 1px solid var(--border); }

/* ---------- Footer ---------- */
.site-footer { background: #232336; color: #cfd3e0; margin-top: var(--sp-8); border-radius: 28px 28px 0 0; }
.site-footer .footer-grid {
    display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: var(--sp-6);
    padding: var(--sp-7) 0 var(--sp-6);
}
.site-footer h4 { color: #fff; margin-bottom: var(--sp-3); font-size: 1rem; }
.site-footer a { color: #cfd3e0; display: block; padding: 5px 0; font-size: .92rem; }
.site-footer a:hover { color: var(--mint); }
.site-footer .footer-brand p { color: #9aa1ad; margin-top: var(--sp-3); font-size: .9rem; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1); padding: var(--sp-4) 0;
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--sp-2);
    font-size: .85rem; color: #9aa1ad;
}
.app-footer { text-align: center; padding: var(--sp-5); color: var(--text-muted); font-size: .85rem; }

/* ---------- App shell ---------- */
.app-main { min-height: calc(100vh - var(--header-h)); padding: var(--sp-6) 0; }

/* ---------- Grids ---------- */
.grid { display: grid; gap: var(--sp-5); }
.grid > * { min-width: 0; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .site-footer .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
    .nav.desktop-nav { display: none; }
    .user-cluster .desktop-only { display: none; }
    .hamburger { display: inline-flex; }
}
@media (max-width: 560px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .site-footer .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-bottom { justify-content: center; text-align: center; }
    .container { padding: 0 var(--sp-4); }
}