:root {
    --primary-color: #000000;
    --primary-hover: #333333;
    --bg-color: #ffffff;
    --card-bg: #ffffff;
    --text-primary: #000000;
    --text-secondary: #666666;
    --accent-color: #444444;
    --glass-border: #dddddd;
    --success: #000000;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background: #ffffff;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1rem;
}

.container {
    width: 100%;
    max-width: 1000px;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

p.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.search-box {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    animation: fadeInUp 0.8s ease-out;
}

input, select {
    flex: 1;
    background: #ffffff;
    border: 1px solid var(--glass-border);
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
}

select {
    flex: 0 0 200px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='black'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.5rem;
    padding-right: 3rem;
}

input:focus, select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

button:active {
    transform: translateY(0);
}

.results-container {
    width: 100%;
    animation: fadeInUp 1s ease-out;
}

.status-message {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.table-wrapper {
    width: 100%;
    overflow-x: auto;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    display: none;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    margin-top: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th {
    background: #f1f5f9;
    padding: 1rem 1.25rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #475569;
    border-bottom: 2px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 10;
}

td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.9rem;
    color: #334155;
    transition: background 0.2s ease;
}

tr:nth-child(even) {
    background: #f8fafc;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background: #f1f5f9 !important;
}

.loader {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: black;
    animation: spin 1s ease-in-out infinite;
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 640px) {
    .search-box {
        flex-direction: column;
    }
    h1 {
        font-size: 1.8rem;
    }
}

::placeholder {
    color: #a1a1aa;
}