:root {
    --primary: #4f8cff;
    --primary-dark: #3a6fd1;
    --danger: #e74c3c;
    --text: #2c3e50;
    --bg: #f0f4f8;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text);
}

/* Login page */
.login-container {
    background: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    width: 100%;
    max-width: 380px;
}

.login-container h2 {
    text-align: center;
    margin-bottom: 25px;
    color: var(--primary);
    font-size: 26px;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 600;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #e0e4ec;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s, box-shadow 0.3s;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,140,255,0.15);
}

.remember-row { margin-bottom: 20px; display: flex; align-items: center; }

.checkbox-label {
    font-size: 14px;
    color: #555;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.btn {
    width: 100%;
    padding: 13px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.1s;
}

.btn:hover { background: var(--primary-dark); }
.btn:active { transform: scale(0.98); }

.error-msg {
    background: #fdecea;
    color: var(--danger);
    padding: 11px 14px;
    border-radius: 8px;
    border-left: 4px solid var(--danger);
    margin-bottom: 20px;
    font-size: 14px;
    text-align: center;
}

/* Welcome page */
.welcome-container {
    background: #ffffff;
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    text-align: center;
    width: 100%;
    max-width: 420px;
}

.welcome-container h2 { color: var(--primary); font-size: 28px; margin-bottom: 12px; }
.welcome-container p { color: #666; margin-bottom: 28px; font-size: 16px; }

.logout-btn {
    display: inline-block;
    width: auto;
    padding: 12px 40px;
    background: var(--danger);
    text-decoration: none;
}

.logout-btn:hover { background: #c0392b; }