/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #0d1117;
    --surface: #161b22;
    --border: #30363d;
    --text: #e6edf3;
    --text-dim: #8b949e;
    --accent: #58a6ff;
    --positive: #3fb950;
    --negative: #f85149;
    --negative-bg: rgba(248,81,73,0.1);
    --positive-text: #3fb950;
    --negative-text: #f85149;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100dvh;
}

/* === App Shell === */
.app-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 12px;
}

/* === Header === */
header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

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

h1 {
    font-size: 1.1rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.auth-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}
.auth-btn:hover { opacity: 0.85; }

.icon-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text);
    width: 34px;
    height: 34px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
}

.header-info {
    margin-top: 8px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 4px;
}

.total-value-container {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.total-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.total-change {
    font-size: 1.1rem;
    font-weight: 600;
}
.total-change.up { color: var(--positive-text); }
.total-change.down { color: var(--negative-text); }

.status-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-dim);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-dim);
    display: inline-block;
}
.status-dot.active {
    background: var(--positive);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(63,185,80,0.4); }
    70% { box-shadow: 0 0 0 6px rgba(63,185,80,0); }
    100% { box-shadow: 0 0 0 0 rgba(63,185,80,0); }
}

.timestamp {
    font-size: 0.7rem;
    color: var(--text-dim);
}

.update-btn {
    background: var(--surface);
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 600;
    cursor: pointer;
    margin-left: 4px;
    transition: all 0.2s;
}
.update-btn:hover {
    background: var(--accent);
    color: #fff;
}

/* === Welcome === */
.welcome {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 50dvh;
    text-align: center;
}

.welcome-inner {
    max-width: 320px;
}

.welcome-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.welcome h2 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.welcome p {
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.login-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 10px 28px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
}
.login-btn:hover { opacity: 0.85; }

/* === Table === */
.table-wrap {
    margin-top: 8px;
    padding-bottom: 24px;
}

.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

#stocks-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    white-space: nowrap;
}

#stocks-table th {
    position: sticky;
    top: 0;
    background: var(--surface);
    padding: 8px 10px;
    text-align: left;
    font-weight: 600;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    user-select: none;
}
#stocks-table th.num { text-align: right; }

#stocks-table th.sort-asc::after { content: ' ▲'; font-size: 0.6em; }
#stocks-table th.sort-desc::after { content: ' ▼'; font-size: 0.6em; }

#stocks-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
}
#stocks-table td.num { text-align: right; font-variant-numeric: tabular-nums; }

#stocks-table tbody tr:hover { background: rgba(88,166,255,0.05); }

#stocks-table a {
    color: var(--accent);
    text-decoration: none;
}
#stocks-table a:hover { text-decoration: underline; }

/* Flash animations */
.flash-up { color: var(--positive) !important; transition: color 0.5s; }
.flash-down { color: var(--negative) !important; transition: color 0.5s; }

.price-up { color: var(--positive-text); }
.price-down { color: var(--negative-text); }
.price-up::before { content: '+'; }

.price-time {
    display: block;
    font-size: 0.6rem;
    color: var(--text-dim);
    margin-top: 2px;
}

.warn-pbr { background: rgba(248,81,73,0.05); }
.warn-ncr { background: rgba(248,81,73,0.08); }

/* === Loading === */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    gap: 12px;
    color: var(--text-dim);
}

.spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Modal === */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 100;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    width: 90%;
    max-width: 400px;
}

.modal-content h2 {
    font-size: 1rem;
    margin-bottom: 16px;
}

.close {
    float: right;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--text-dim);
}

.settings-form { display: flex; flex-direction: column; gap: 12px; }

.form-group label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-bottom: 4px;
}

.form-group input {
    width: 100%;
    padding: 8px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.85rem;
}

/* === Mobile === */
@media (max-width: 600px) {
    h1 { font-size: 0.95rem; }
    .total-value { font-size: 1.2rem; }
    #stocks-table { font-size: 0.72rem; }
    #stocks-table th, #stocks-table td { padding: 6px 6px; }
}