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

:root {
    --primary: 220 70% 50%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    margin: 0;
    padding: 20px;
    background: #f3f3f3;
    min-height: 100vh;
    color: #111111;
}

#login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding-top: 50px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.welcome {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.welcome .user-name {
    font-weight: bold;
    color: hsl(var(--primary));
}

.status {
    margin-top: 20px;
    font-size: 0.9rem;
    opacity: 0.7;
}

.logout-btn {
    margin-top: 20px;
    padding: 10px 24px;
    background: transparent;
    border: 2px solid #111111;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
    margin-top: 100px;
}

.logout-btn:hover {
    background: white;
    color: #111111;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: hsl(var(--primary));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(88, 88, 88, 0.4);
}

.submit-btn:active {
    transform: translateY(0);
}

.error-message {
    display: none;
    background: #fee2e2;
    color: #dc2626;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.error-message.show {
    display: block;
}

.logo-container {
    text-align: center;
    margin-bottom: 30px;
}

.logo-container h1 {
    color: #333;
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.logo-container p {
    color: #666;
    font-size: 0.95rem;
}

.logo-container img {
    width: 200px;
    margin-bottom: 20px;
}

.loading {
    display: none;
    text-align: center;
    padding: 20px;
}

.loading.show {
    display: block;
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid hsl(var(--primary));
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.login-container {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    width: 100%;
    max-width: 420px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: #333;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.2s;
    outline: none;
}

.form-group input:focus {
    border-color: hsl(var(--primary));
}