:root {
    --primary: #25d366;
    --secondary: #075e54;
    --dark: #121b22;
    --light: #f0f2f5;
    --white: #ffffff;
    --error: #ea0038;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: var(--light);
    color: var(--dark);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* Login Page */
.login-page {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
}

.login-container {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    text-align: center;
    width: 100%;
    max-width: 400px;
}

.login-container h1 {
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.login-container p {
    color: #666;
    margin-bottom: 2rem;
}

input {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    outline: none;
}

button {
    width: 100%;
    padding: 12px;
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background-color: var(--secondary);
}

.error {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

/* Dashboard */
.dashboard-container {
    width: 90%;
    max-width: 1000px;
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--light);
    padding-bottom: 1rem;
    margin-bottom: 2rem;
}

.status-badge {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.status-online { background: #dcf8c6; color: #128c7e; }
.status-offline { background: #ffebee; color: #c62828; }

.main-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
}

.qr-section {
    text-align: center;
    padding: 1.5rem;
    background: var(--light);
    border-radius: 12px;
}

.qr-section img {
    max-width: 250px;
    margin: 1rem 0;
    border: 10px solid white;
    border-radius: 10px;
}

.settings-section {
    padding: 1.5rem;
}

.settings-section textarea {
    width: 100%;
    height: 120px;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    resize: none;
    margin-top: 10px;
}

.logout-btn {
    background: transparent;
    color: var(--secondary);
    border: 1px solid var(--secondary);
    width: auto;
    padding: 5px 15px;
}

.logout-btn:hover {
    background: var(--secondary);
    color: white;
}