/* General Styling */
:root {
    --primary-color: #4A90E2;
    --background-color: #F7F9FC;
    --card-background: #FFFFFF;
    --text-color: #4A4A4A;
    --text-light: #9B9B9B;
    --border-color: #EAEAEA;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --border-radius: 12px;
    --success-color: #28a745;
    --error-color: #dc3545;
    --expired-color: #ffc107;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--card-background);
    padding: 10px 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo h1 { font-size: 24px; margin: 0; }
nav { display: flex; gap: 25px; }
nav a { color: var(--text-light); text-decoration: none; font-weight: 500; transition: color 0.2s; }
nav a:hover { color: var(--primary-color); }
nav a.active { color: var(--primary-color); font-weight: 600; }

/* User Profile Dropdown */
.user-profile { position: relative; cursor: pointer; }
.user-profile img { width: 40px; height: 40px; border-radius: 50%; border: 2px solid var(--border-color); }
.profile-dropdown {
    display: none;
    position: absolute;
    top: 55px; right: 0;
    width: 280px;
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    z-index: 1000;
    overflow: hidden;
}
.user-profile:hover .profile-dropdown { display: block; }
.dropdown-header { display: flex; align-items: center; gap: 15px; padding: 15px; background: #fafafa; border-bottom: 1px solid var(--border-color); }
.dropdown-header img { width: 50px; height: 50px; border-radius: 50%; }
.dropdown-name { font-weight: 600; margin: 0; }
.dropdown-username { font-size: 0.9em; color: var(--text-light); margin: 0; }
.dropdown-body { padding: 15px; font-size: 0.9em; }

/* Main Content & Cards */
main > section { margin-bottom: 40px; }
.card {
    background-color: var(--card-background);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}
.card-container { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.welcome-section h2 { font-size: 2em; margin-bottom: 5px; }
.welcome-section p { color: var(--text-light); margin-top: 0; }
.api-key-card { display: flex; flex-direction: column; gap: 15px; }
.api-key-card .key-value { background-color: #f0f2f5; padding: 10px; border-radius: 6px; font-family: monospace; word-break: break-all; }
.api-key-card .key-info { display: flex; justify-content: space-between; font-size: 0.9em; }

/* How to Use Section */
pre { background: #2d2d2d; color: #f8f8f2; padding: 15px; border-radius: 8px; overflow-x: auto; }
.language-selector { margin-bottom: 10px; }
.lang-btn { background: none; border: 1px solid var(--border-color); padding: 5px 15px; border-radius: 20px; cursor: pointer; }
.lang-btn.active { background-color: var(--primary-color); color: white; border-color: var(--primary-color); }
.code-block { position: relative; }
.copy-btn { position: absolute; top: 10px; right: 10px; background: #444; color: white; border: none; padding: 5px 10px; border-radius: 5px; cursor: pointer; }

/* Regions */
.regions-container { display: flex; flex-wrap: wrap; gap: 10px; }
.regions-container span { background-color: #eef4ff; color: var(--primary-color); padding: 5px 12px; border-radius: 15px; font-weight: 500; font-size: 0.9em; }

/* Loader */
.loader-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(255, 255, 255, 0.8); z-index: 9999; display: flex; justify-content: center; align-items: center; }
.loader { border: 5px solid #f3f3f3; border-top: 5px solid var(--primary-color); border-radius: 50%; width: 50px; height: 50px; animation: spin 1s linear infinite; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* Admin Table */
.admin-table-section table { width: 100%; border-collapse: collapse; }
.admin-table-section th, .admin-table-section td { text-align: left; padding: 12px 15px; border-bottom: 1px solid var(--border-color); }
.admin-table-section th { font-size: 0.9em; text-transform: uppercase; color: var(--text-light); }
.status { padding: 3px 8px; border-radius: 10px; font-size: 0.8em; font-weight: 600; }
.status.active { background-color: #e9f7ec; color: var(--success-color); }
.status.expired { background-color: #fff8e1; color: #f57c00; }
.status.inactive { background-color: #f3f4f6; color: #6b7280; }
.user-cell { display: flex; flex-direction: column; }
.user-cell .username { font-size: 0.9em; color: var(--text-light); }