:root {
    --bg: #0B0B12;
    --bg-2: #111119;
    --card: #161622;
    --card-hover: #1C1C2A;
    --border: #23233A;
    --text: #FFFFFF;
    --text-2: #9B9BAD;
    --text-3: #6B6B80;
    --grad-start: #FFAFBD;
    --grad-end: #B5AFFF;
    --grad: linear-gradient(135deg, #FFAFBD 0%, #B5AFFF 100%);
    --grad-soft: linear-gradient(135deg, rgba(255,175,189,0.18) 0%, rgba(181,175,255,0.18) 100%);
    --mint: #A8E6CF;
    --peach: #FFD3B6;
    --pink: #FFAAA5;
    --lilac: #D4BBFF;
    --green: #4ADE80;
    --red: #F87171;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    font-family: 'Poppins', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    font-weight: 400;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(600px circle at 10% -10%, rgba(255, 175, 189, 0.08), transparent 50%),
        radial-gradient(800px circle at 100% 110%, rgba(181, 175, 255, 0.10), transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.app {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
    background: var(--bg-2);
    border-right: 1px solid var(--border);
    padding: 28px 20px;
    display: flex;
    flex-direction: column;
    gap: 28px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 8px;
}

.logo-mark {
    width: 40px; height: 40px;
    border-radius: 12px;
    background: var(--grad);
    display: grid;
    place-items: center;
    color: #1a1a2a;
}

.logo-mark svg { width: 22px; height: 22px; }

.logo-text {
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.01em;
}

.nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-3);
    letter-spacing: 0.08em;
    padding: 12px 12px 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: 10px;
    color: var(--text-2);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s ease;
}

.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

.nav-item:hover {
    background: var(--card);
    color: var(--text);
}

.nav-item.active {
    background: var(--grad-soft);
    color: var(--text);
    position: relative;
}

.nav-item.active::before {
    content: "";
    position: absolute;
    left: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 22px;
    background: var(--grad);
    border-radius: 0 3px 3px 0;
}

.upgrade-card {
    margin-top: auto;
    background: var(--grad);
    border-radius: 16px;
    padding: 18px;
    color: #1a1a2a;
    text-align: center;
}

.upgrade-icon { font-size: 24px; margin-bottom: 6px; }
.upgrade-title { font-weight: 700; font-size: 15px; }
.upgrade-sub { font-size: 12px; opacity: 0.75; margin-bottom: 12px; font-weight: 500; }

.upgrade-btn {
    width: 100%;
    background: #1a1a2a;
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 9px;
    font-family: inherit;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: transform 0.15s ease;
}

.upgrade-btn:hover { transform: translateY(-1px); }

/* ---------- Main ---------- */
.main {
    padding: 28px 32px 40px;
    max-width: 100%;
    overflow-x: hidden;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
}

.search {
    flex: 1;
    max-width: 480px;
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 11px 16px;
    transition: border-color 0.2s;
}

.search:focus-within { border-color: rgba(181, 175, 255, 0.5); }

.search svg { width: 18px; height: 18px; color: var(--text-3); flex-shrink: 0; }

.search input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
    width: 100%;
}

.search input::placeholder { color: var(--text-3); }

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.icon-btn {
    position: relative;
    width: 42px; height: 42px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-2);
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all 0.15s;
}

.icon-btn:hover { color: var(--text); background: var(--card-hover); }
.icon-btn svg { width: 18px; height: 18px; }

.icon-btn .dot {
    position: absolute;
    top: 10px; right: 10px;
    width: 8px; height: 8px;
    background: var(--pink);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--card);
}

.avatar {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 6px 14px 6px 6px;
    cursor: pointer;
}

.avatar-img {
    width: 32px; height: 32px;
    border-radius: 8px;
    background: var(--grad);
    color: #1a1a2a;
    display: grid;
    place-items: center;
    font-weight: 700;
    font-size: 14px;
}

.avatar-name { font-size: 13px; font-weight: 600; }
.avatar-role { font-size: 11px; color: var(--text-3); }

/* ---------- Grid ---------- */
.grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

section {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 22px;
    box-shadow: var(--shadow);
}

.balance-card {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(255,175,189,0.12), rgba(181,175,255,0.10)), var(--card);
    border-color: rgba(181, 175, 255, 0.2);
}

.balance-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    margin-bottom: 22px;
}

.balance-glow {
    position: absolute;
    top: -30px; right: -30px;
    width: 180px; height: 180px;
    background: var(--grad);
    filter: blur(60px);
    opacity: 0.25;
    border-radius: 50%;
}

.balance-label {
    font-size: 13px;
    color: var(--text-2);
    font-weight: 500;
    margin-bottom: 6px;
}

.balance-amount {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.balance-change {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
}

.balance-change svg { width: 14px; height: 14px; }
.balance-change.up { color: var(--green); background: rgba(74, 222, 128, 0.12); }
.balance-change.down { color: var(--red); background: rgba(248, 113, 113, 0.12); }
.balance-change.down svg { transform: rotate(180deg); }

.action-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 8px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 14px;
    color: var(--text);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.action-btn:hover { transform: translateY(-2px); background: var(--card-hover); }

.action-icon {
    width: 36px; height: 36px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 16px;
    font-weight: 700;
    color: #1a1a2a;
}

.action-btn.buy .action-icon  { background: var(--mint); }
.action-btn.sell .action-icon { background: var(--peach); }
.action-btn.swap .action-icon { background: var(--pink); }
.action-btn.add .action-icon  { background: var(--lilac); }

/* Chart */
.chart-card { grid-column: 1 / 2; min-height: 360px; }

.chart-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 14px;
    flex-wrap: wrap;
    gap: 10px;
}

.chart-title { font-size: 17px; font-weight: 600; }
.chart-sub { font-size: 12px; color: var(--text-3); margin-top: 3px; }

.range-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-2);
    border-radius: 10px;
    padding: 4px;
}

.range-tab {
    background: transparent;
    border: none;
    color: var(--text-3);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 7px;
    cursor: pointer;
    transition: all 0.15s;
}

.range-tab:hover { color: var(--text); }
.range-tab.active { background: var(--grad); color: #1a1a2a; }

#portfolioChart { max-height: 280px; width: 100% !important; }

/* Watchlist */
.watchlist-card { grid-column: 2 / 3; grid-row: 1 / 3; }

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.card-title { font-size: 17px; font-weight: 600; }

.link-btn {
    background: none;
    border: none;
    color: var(--grad-end);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.watchlist {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.coin-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 12px;
    padding: 10px 10px;
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.15s;
}

.coin-row:hover { background: var(--card-hover); }

.coin-icon {
    width: 38px; height: 38px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-weight: 700;
    font-size: 12px;
    color: #1a1a2a;
    flex-shrink: 0;
}

.coin-name { font-size: 14px; font-weight: 600; }
.coin-ticker { font-size: 11px; color: var(--text-3); text-transform: uppercase; font-weight: 500; }

.coin-meta { text-align: right; }
.coin-price { font-size: 13px; font-weight: 600; }
.coin-change { font-size: 11px; font-weight: 600; margin-top: 2px; }
.coin-change.up { color: var(--green); }
.coin-change.down { color: var(--red); }

/* Explore Grid */
.explore-card { grid-column: 1 / 2; }

.explore-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

.explore-item {
    padding: 16px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    cursor: pointer;
    transition: all 0.15s;
}

.explore-item:hover {
    transform: translateY(-2px);
    border-color: rgba(181, 175, 255, 0.3);
}

.explore-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.explore-coin {
    display: flex;
    align-items: center;
    gap: 10px;
}

.explore-coin .coin-icon { width: 32px; height: 32px; font-size: 11px; }

.explore-bottom {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 10px;
}

.sparkline {
    width: 80px; height: 32px;
    flex-shrink: 0;
}

/* News */
.news-card { grid-column: 2 / 3; }

.news-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.news-item {
    padding: 12px;
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.15s;
}

.news-item:hover { background: var(--card-hover); }

.news-tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 8px;
    border-radius: 6px;
    margin-bottom: 8px;
    background: var(--grad-soft);
    color: var(--grad-end);
}

.news-title { font-size: 13px; font-weight: 600; line-height: 1.45; margin-bottom: 4px; }
.news-meta { font-size: 11px; color: var(--text-3); }

/* Responsive */
@media (max-width: 1100px) {
    .grid { grid-template-columns: 1fr; }
    .chart-card, .watchlist-card, .explore-card, .news-card {
        grid-column: auto; grid-row: auto;
    }
}

@media (max-width: 820px) {
    .app { grid-template-columns: 1fr; }
    .sidebar {
        position: relative;
        height: auto;
        flex-direction: row;
        overflow-x: auto;
        gap: 12px;
        padding: 16px;
    }
    .nav { flex-direction: row; flex-shrink: 0; }
    .nav-label { display: none; }
    .nav-item { white-space: nowrap; padding: 8px 12px; }
    .nav-item.active::before { display: none; }
    .upgrade-card { display: none; }
    .main { padding: 20px 16px 32px; }
    .balance-amount { font-size: 28px; }
    .avatar-meta { display: none; }
}