@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;500;600&display=swap');

:root {
    /* Gateway Theme Variables */
    --bg-color: #f4f4f9;
    --text-color: #333;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 6px rgba(0,0,0,0.1);
    
    /* Mapped Variables */
    --header-bg: #ffffff;
    --header-text: #333;
    --container-bg: #ffffff;
    --input-bg: #ffffff;
    --input-border: #ddd;
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --card-bg: #2d2d2d;
    --card-shadow: 0 4px 6px rgba(0,0,0,0.3);
    
    --header-bg: #2d2d2d;
    --header-text: #e0e0e0;
    --container-bg: #2d2d2d;
    --input-bg: #333;
    --input-border: #555;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    text-align: center;
    transition: 0.3s;
}

header {
    background: var(--card-bg);
    color: var(--header-text);
    padding: 15px 20px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

h1 {
    margin: 0;
    font-weight: 600;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px;
    background: var(--card-bg);
    box-shadow: var(--card-shadow);
    border-radius: 12px;
    text-align: left;
}

/* Buttons & Links */
.btn, button {
    display: inline-block;
    padding: 10px 20px;
    margin: 10px;
    text-decoration: none;
    color: white;
    background-color: #007BFF;
    border: none;
    border-radius: 8px;
    transition: background 0.3s;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: inherit;
}
.btn:hover, button:hover {
    background-color: #0056b3;
}
.btn-secondary {
    background-color: #6c757d;
}

/* Forms */
input[type="text"], input[type="password"], input[type="email"] {
    padding: 10px;
    margin: 10px auto;
    display: block;
    width: 100%;
    max-width: 300px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-color);
    border-radius: 8px;
}

/* Tables (for Admin Dashboard) */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--input-border);
}
th {
    font-weight: 600;
    opacity: 0.8;
}
tr:hover {
    background-color: rgba(0,0,0,0.02);
}

#theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    background-color: var(--container-bg);
    color: var(--text-color);
    border: 1px solid var(--text-color);
}

/* Mobile Responsiveness */
@media (max-width: 600px) {
    .container {
        width: 95%;
        padding: 1rem;
        margin: 1rem auto;
    }

    input[type="text"], input[type="password"], input[type="email"] {
        max-width: 100%;
    }

    #theme-toggle {
        top: 0.5rem;
        right: 0.5rem;
        padding: 5px 10px;
        font-size: 0.8rem;
    }
}

/* Profile Page */
.profile-img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--header-bg);
    margin: 10px auto;
    display: block;
}

/* Gateway Specific Styles */
.system-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 15px; font-size: 0.9rem; margin-bottom: 30px; align-items: center; background: var(--card-bg); padding: 10px 20px; border-radius: 8px; box-shadow: var(--card-shadow); }
.meta-stats { display: flex; flex-wrap: wrap; gap: 15px; }
.meta-actions { display: flex; gap: 10px; align-items: center; }
.theme-toggle { background: none; border: 1px solid var(--text-color); color: var(--text-color); padding: 5px 10px; border-radius: 4px; cursor: pointer; }
.logout-btn { background: none; border: 1px solid #dc3545; color: #dc3545; padding: 5px 10px; border-radius: 4px; cursor: pointer; text-decoration: none; font-size: 0.9rem; }
.logout-btn:hover { background: #dc3545; color: white; }
.nav-btn { background: none; border: 1px solid var(--text-color); color: var(--text-color); padding: 5px 10px; border-radius: 4px; cursor: pointer; text-decoration: none; font-size: 0.9rem; }
.nav-btn:hover { background: var(--text-color); color: var(--bg-color); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.card { background: var(--card-bg); padding: 20px; border-radius: 12px; box-shadow: var(--card-shadow); text-decoration: none; color: inherit; display: flex; flex-direction: column; position: relative; transition: transform 0.2s; }
.card:hover { transform: translateY(-5px); }
.status-dot { width: 10px; height: 10px; border-radius: 50%; position: absolute; top: 20px; right: 20px; }
.status-dot.online { background-color: #28a745; box-shadow: 0 0 5px #28a745; }
.status-dot.offline { background-color: #dc3545; }
.status-dot.pending { background-color: #ffc107; }
.icon { font-size: 2rem; margin-bottom: 10px; }
.name { font-weight: 600; font-size: 1.1rem; margin-bottom: 5px; }
.desc { font-size: 0.85rem; opacity: 0.8; }

/* Unified Utilities */
.flex-between { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; margin-bottom: 20px; }
.table-responsive { overflow-x: auto; }
.text-success { color: #28a745; }
.text-danger { color: #dc3545; }
.w-100 { width: 100%; }
.mb-20 { margin-bottom: 20px; }

/* Alerts */
.alert { padding: 15px; border-radius: 8px; margin-bottom: 20px; border: 1px solid transparent; }
.alert-info { background: rgba(0,0,0,0.05); color: var(--text-color); border-color: var(--input-border); }
.alert-success { background: #d4edda; color: #155724; border-color: #c3e6cb; }
.alert-danger { background: #f8d7da; color: #721c24; border-color: #f5c6cb; }

/* Button Variants */
.btn-success { background-color: #28a745; }
.btn-success:hover { background-color: #218838; }
.btn-danger { background-color: #dc3545; }
.btn-danger:hover { background-color: #c82333; }
.btn-warning { background-color: #ffc107; color: #212529; }
.btn-warning:hover { background-color: #e0a800; }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; margin: 2px; }

/* Profile & Layout Components */
.card-section { background: var(--card-bg); padding: 30px; border-radius: 12px; box-shadow: var(--card-shadow); margin-bottom: 30px; }
.profile-layout { display: flex; flex-wrap: wrap; gap: 30px; align-items: center; }
.profile-avatar { width: 150px; height: 150px; border-radius: 50%; overflow: hidden; margin: 0 auto 15px; border: 4px solid var(--bg-color); box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.profile-avatar img { width: 100%; height: 100%; object-fit: cover; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; }

/* Form Elements */
.form-full { width: 100%; max-width: 100%; margin: 5px 0 15px; }
label { display: block; margin-bottom: 5px; font-weight: 500; }
.label-meta { font-size: 0.85rem; color: #666; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; }
.value-meta { font-size: 1.2rem; font-weight: 500; color: var(--text-color); }
.danger-zone { background: #fff5f5; border: 1px solid #ffcccc; }
.danger-zone h3, .danger-zone label, .danger-zone p { color: #d9534f; }