@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-dark: #ffffff;
    --bg-panel: #ffffff;
    --primary-blue: #2563eb;
    --primary-dark: #0052cc;
    --text-main: #111827;
    --text-muted: #6b7280;
    --glass-border: #e5e7eb;
    --glass-bg: #ffffff;
    --shadow-soft: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

html, body {
    width: 100%;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: #ffffff;
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout Grid */
.app-layout {
    display: flex;
    width: 100%;
    min-height: 100vh; 
    background: #fff;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-panel);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: #000;
    text-transform: none;
    letter-spacing: -0.5px;
    margin-bottom: 40px;
    text-shadow: none;
    text-align: center;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 5px;
    transition: all 0.3s ease;
    font-weight: 400;
    border: 1px solid transparent;
}

.nav-links a:hover {
    background: #f1f5f9;
    color: var(--primary-blue);
}

.nav-links a.active {
    background: var(--primary-blue);
    color: white !important;
    box-shadow: 0 4px 6px -1px rgba(0, 102, 255, 0.2);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
}

/* Cards "Black Piano" */
.card {
    background: var(--bg-panel);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow-soft);
    position: relative;
    margin-bottom: 20px;
}

.card::before {
    display: none;
}

/* Forms */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; color: var(--text-muted); font-size: 0.9rem; }
.form-control {
    width: 100%;
    padding: 12px;
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    color: var(--text-main);
    font-family: inherit;
    transition: 0.3s;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: 0.3s;
    font-size: 0.8rem;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
}
.btn-primary:hover {
    background: var(--primary-dark);
}

/* API Key Display */
.api-key-box {
    background: #f1f5f9;
    padding: 15px;
    border-radius: 4px;
    border: 1px solid #e5e7eb;
    font-family: monospace;
    color: #111827;
    font-size: 1.1rem;
    word-break: break-all;
    text-align: center;
    margin: 10px 0;
    background: #f9fafb;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.auth-box {
    width: 100%;
    max-width: 400px;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th { text-align: left; color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase; padding: 8px; border-bottom: 1px solid var(--glass-border); }
td { padding: 10px 8px; border-bottom: 1px solid var(--glass-border); }
.num-col { color: var(--primary-blue); font-weight: 700; font-size: 1.1rem; }

/* Filters */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.filter-btn {
    background: #fff;
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: 0.3s;
}
.filter-btn:hover, .filter-btn.active {
    background: var(--primary-blue);
    color: #fff;
    font-weight: 500;
    border-color: var(--primary-blue);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    padding: 20px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    background: #ffffff;
}

.stat-value { font-size: 1.8rem; font-weight: 700; color: #111827; margin-top: 5px; }

.loading { color: var(--primary-blue); text-align: center; padding: 20px; }

@media (max-width: 768px) {
    .app-layout { flex-direction: column; }
    .sidebar { width: 100%; padding: 15px; }
    .nav-links { display: flex; overflow-x: auto; gap: 10px; }
    .nav-links a { white-space: nowrap; margin-bottom: 0; }
    .filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 10px;
        -webkit-overflow-scrolling: touch;
    }
    .filter-btn { flex: 0 0 auto; }
}