:root {
    --primary: #2563eb;
    --danger: #dc2626;
    --success: #16a34a;
    --warning: #ea580c;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.6;
}

.layout {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Navbar */
.navbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

.nav-brand {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.nav-menu {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

.nav-link:hover { color: var(--primary); }

/* Flash */
.flash-container { margin-bottom: 16px; }

.flash {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 8px;
}

.flash-success { background: #dcfce7; color: var(--success); }
.flash-error { background: #fee2e2; color: var(--danger); }

/* Cards */
.card {
    background: var(--card);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

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

.card-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
}

/* Tags */
.tags-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 13px;
    text-decoration: none;
    background: var(--bg);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.tag.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.tag-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    background: #e0e7ff;
    color: #4338ca;
}

/* Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table th,
.data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
}

.data-table tr:hover { background: #f8fafc; }

.price { font-weight: 600; font-family: 'SF Mono', monospace; }
.price.up { color: var(--danger); }
.price.down { color: var(--success); }

.alert-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    background: #fef3c7;
    color: var(--warning);
}

/* Forms */
.pure-form .form-group {
    margin-bottom: 16px;
}

.pure-form label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
}

.pure-form input[type="text"],
.pure-form input[type="number"],
.pure-form input[type="password"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.pure-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.pure-form .btn,
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.pure-form .btn-primary,
.btn-primary { background: var(--primary); color: white; }

.pure-form .btn-danger,
.btn-danger { background: var(--danger); color: white; }

.btn-small { padding: 6px 12px; font-size: 13px; }

.pure-form .btn-primary:hover,
.btn-primary:hover { opacity: 0.9; }

/* Autocomplete */
.autocomplete-wrap { position: relative; }

.autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    z-index: 100;
    max-height: 240px;
    overflow-y: auto;
    display: none;
}

.autocomplete-list.show { display: block; }

.autocomplete-item {
    padding: 10px 12px;
    cursor: pointer;
    font-size: 14px;
}

.autocomplete-item:hover { background: #f1f5f9; }

/* Tag input */
.tag-input-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: 8px;
    min-height: 44px;
    align-items: center;
}

.tag-input-wrap:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.tag-input {
    border: none;
    outline: none;
    flex: 1;
    min-width: 80px;
    padding: 4px;
    font-size: 14px;
}

.tag-remove {
    cursor: pointer;
    margin-left: 2px;
    font-weight: 700;
}

/* Login */
.login-box {
    max-width: 360px;
    margin: 80px auto;
}

/* Mobile cards */
.stock-cards {
    display: none;
}

/* Responsive */
@media (max-width: 640px) {
    .form-row,
    .form-row-3 {
        grid-template-columns: 1fr;
    }

    .navbar {
        gap: 12px;
    }
    .navbar {
        gap: 12px;
    }

    .nav-menu {
        width: 100%;
        justify-content: space-between;
        gap: 0;
    }

    .data-table { display: none; }

    .stock-cards {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .stock-card {
        background: var(--card);
        border-radius: 12px;
        padding: 16px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }

    .stock-card-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 12px;
    }

    .stock-card-name {
        font-size: 16px;
        font-weight: 700;
    }

    .stock-card-code {
        font-size: 13px;
        color: var(--text-muted);
    }

    .stock-card-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        font-size: 13px;
    }

    .stock-card-label {
        color: var(--text-muted);
        font-size: 12px;
    }

    .stock-card-value {
        font-weight: 600;
        font-family: 'SF Mono', monospace;
    }

    .stock-card-actions {
        margin-top: 12px;
        display: flex;
        gap: 8px;
    }
}